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From els...@apache.org
Subject [22/37] calcite git commit: [CALCITE-1717] Remove avatica from the tree
Date Sat, 01 Apr 2017 20:36:11 GMT
http://git-wip-us.apache.org/repos/asf/calcite/blob/5289d343/avatica/core/src/main/java/org/apache/calcite/avatica/remote/Service.java
----------------------------------------------------------------------
diff --git a/avatica/core/src/main/java/org/apache/calcite/avatica/remote/Service.java b/avatica/core/src/main/java/org/apache/calcite/avatica/remote/Service.java
deleted file mode 100644
index 786d07a..0000000
--- a/avatica/core/src/main/java/org/apache/calcite/avatica/remote/Service.java
+++ /dev/null
@@ -1,3114 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to you under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.calcite.avatica.remote;
-
-import org.apache.calcite.avatica.AvaticaClientRuntimeException;
-import org.apache.calcite.avatica.AvaticaConnection;
-import org.apache.calcite.avatica.AvaticaSeverity;
-import org.apache.calcite.avatica.AvaticaUtils;
-import org.apache.calcite.avatica.BuiltInConnectionProperty;
-import org.apache.calcite.avatica.ConnectionPropertiesImpl;
-import org.apache.calcite.avatica.Meta;
-import org.apache.calcite.avatica.QueryState;
-import org.apache.calcite.avatica.proto.Common;
-import org.apache.calcite.avatica.proto.Requests;
-import org.apache.calcite.avatica.proto.Responses;
-
-import com.fasterxml.jackson.annotation.JsonCreator;
-import com.fasterxml.jackson.annotation.JsonIgnore;
-import com.fasterxml.jackson.annotation.JsonProperty;
-import com.fasterxml.jackson.annotation.JsonSubTypes;
-import com.fasterxml.jackson.annotation.JsonTypeInfo;
-import com.google.protobuf.ByteString;
-import com.google.protobuf.Descriptors.FieldDescriptor;
-import com.google.protobuf.Message;
-import com.google.protobuf.UnsafeByteOperations;
-
-import java.io.PrintWriter;
-import java.io.StringWriter;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Map.Entry;
-import java.util.Objects;
-import java.util.Properties;
-
-import static java.nio.charset.StandardCharsets.UTF_8;
-
-/**
- * API for request-response calls to an Avatica server.
- */
-public interface Service {
-  ResultSetResponse apply(CatalogsRequest request);
-  ResultSetResponse apply(SchemasRequest request);
-  ResultSetResponse apply(TablesRequest request);
-  ResultSetResponse apply(TableTypesRequest request);
-  ResultSetResponse apply(TypeInfoRequest request);
-  ResultSetResponse apply(ColumnsRequest request);
-  PrepareResponse apply(PrepareRequest request);
-  ExecuteResponse apply(ExecuteRequest request);
-  ExecuteResponse apply(PrepareAndExecuteRequest request);
-  SyncResultsResponse apply(SyncResultsRequest request);
-  FetchResponse apply(FetchRequest request);
-  CreateStatementResponse apply(CreateStatementRequest request);
-  CloseStatementResponse apply(CloseStatementRequest request);
-  OpenConnectionResponse apply(OpenConnectionRequest request);
-  CloseConnectionResponse apply(CloseConnectionRequest request);
-  ConnectionSyncResponse apply(ConnectionSyncRequest request);
-  DatabasePropertyResponse apply(DatabasePropertyRequest request);
-  CommitResponse apply(CommitRequest request);
-  RollbackResponse apply(RollbackRequest request);
-  ExecuteBatchResponse apply(PrepareAndExecuteBatchRequest request);
-  ExecuteBatchResponse apply(ExecuteBatchRequest request);
-
-  /**
-   * Sets server-level metadata for RPCs. This includes information that is static across all RPCs.
-   *
-   * @param metadata The server-level metadata.
-   */
-  void setRpcMetadata(RpcMetadataResponse metadata);
-
-  /** Factory that creates a {@code Service}. */
-  interface Factory {
-    Service create(AvaticaConnection connection);
-  }
-
-  /** Base class for request and response. */
-  abstract class Base {
-    static final int PRIME = 31;
-
-    protected static int p(int result, Object o) {
-      return PRIME * result + ((o == null) ? 0 : o.hashCode());
-    }
-
-    protected static int p(int result, boolean v) {
-      return PRIME * result + (v ? 1231 : 1237);
-    }
-
-    protected static int p(int result, int v) {
-      return PRIME * result + v;
-    }
-
-    protected static int p(int result, long v) {
-      return PRIME * result + (int) (v ^ (v >>> 32));
-    }
-  }
-
-  /** Base class for all service request messages. */
-  @JsonTypeInfo(
-      use = JsonTypeInfo.Id.NAME,
-      property = "request",
-      defaultImpl = SchemasRequest.class)
-  @JsonSubTypes({
-      @JsonSubTypes.Type(value = CatalogsRequest.class, name = "getCatalogs"),
-      @JsonSubTypes.Type(value = SchemasRequest.class, name = "getSchemas"),
-      @JsonSubTypes.Type(value = TablesRequest.class, name = "getTables"),
-      @JsonSubTypes.Type(value = TableTypesRequest.class, name = "getTableTypes"),
-      @JsonSubTypes.Type(value = TypeInfoRequest.class, name = "getTypeInfo"),
-      @JsonSubTypes.Type(value = ColumnsRequest.class, name = "getColumns"),
-      @JsonSubTypes.Type(value = ExecuteRequest.class, name = "execute"),
-      @JsonSubTypes.Type(value = PrepareRequest.class, name = "prepare"),
-      @JsonSubTypes.Type(value = PrepareAndExecuteRequest.class,
-          name = "prepareAndExecute"),
-      @JsonSubTypes.Type(value = FetchRequest.class, name = "fetch"),
-      @JsonSubTypes.Type(value = CreateStatementRequest.class,
-          name = "createStatement"),
-      @JsonSubTypes.Type(value = CloseStatementRequest.class,
-          name = "closeStatement"),
-      @JsonSubTypes.Type(value = OpenConnectionRequest.class,
-          name = "openConnection"),
-      @JsonSubTypes.Type(value = CloseConnectionRequest.class,
-          name = "closeConnection"),
-      @JsonSubTypes.Type(value = ConnectionSyncRequest.class, name = "connectionSync"),
-      @JsonSubTypes.Type(value = DatabasePropertyRequest.class, name = "databaseProperties"),
-      @JsonSubTypes.Type(value = SyncResultsRequest.class, name = "syncResults"),
-      @JsonSubTypes.Type(value = CommitRequest.class, name = "commit"),
-      @JsonSubTypes.Type(value = RollbackRequest.class, name = "rollback"),
-      @JsonSubTypes.Type(value = PrepareAndExecuteBatchRequest.class,
-          name = "prepareAndExecuteBatch"),
-      @JsonSubTypes.Type(value = ExecuteBatchRequest.class, name = "executeBatch") })
-  abstract class Request extends Base {
-    abstract Response accept(Service service);
-    abstract Request deserialize(Message genericMsg);
-    abstract Message serialize();
-  }
-
-  /** Base class for all service response messages. */
-  @JsonTypeInfo(
-      use = JsonTypeInfo.Id.NAME,
-      property = "response",
-      defaultImpl = ResultSetResponse.class)
-  @JsonSubTypes({
-      @JsonSubTypes.Type(value = OpenConnectionResponse.class, name = "openConnection"),
-      @JsonSubTypes.Type(value = ResultSetResponse.class, name = "resultSet"),
-      @JsonSubTypes.Type(value = PrepareResponse.class, name = "prepare"),
-      @JsonSubTypes.Type(value = FetchResponse.class, name = "fetch"),
-      @JsonSubTypes.Type(value = CreateStatementResponse.class,
-          name = "createStatement"),
-      @JsonSubTypes.Type(value = CloseStatementResponse.class,
-          name = "closeStatement"),
-      @JsonSubTypes.Type(value = CloseConnectionResponse.class,
-          name = "closeConnection"),
-      @JsonSubTypes.Type(value = ConnectionSyncResponse.class, name = "connectionSync"),
-      @JsonSubTypes.Type(value = DatabasePropertyResponse.class, name = "databaseProperties"),
-      @JsonSubTypes.Type(value = ExecuteResponse.class, name = "executeResults"),
-      @JsonSubTypes.Type(value = ErrorResponse.class, name = "error"),
-      @JsonSubTypes.Type(value = SyncResultsResponse.class, name = "syncResults"),
-      @JsonSubTypes.Type(value = RpcMetadataResponse.class, name = "rpcMetadata"),
-      @JsonSubTypes.Type(value = CommitResponse.class, name = "commit"),
-      @JsonSubTypes.Type(value = RollbackResponse.class, name = "rollback"),
-      @JsonSubTypes.Type(value = ExecuteBatchResponse.class, name = "executeBatch") })
-  abstract class Response extends Base {
-    abstract Response deserialize(Message genericMsg);
-    abstract Message serialize();
-  }
-
-  /** Request for
-   * {@link org.apache.calcite.avatica.Meta#getCatalogs(Meta.ConnectionHandle)}. */
-  class CatalogsRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.CatalogsRequest.
-        getDescriptor().findFieldByNumber(Requests.CatalogsRequest.CONNECTION_ID_FIELD_NUMBER);
-    public final String connectionId;
-
-    public CatalogsRequest() {
-      connectionId = null;
-    }
-
-    @JsonCreator
-    public CatalogsRequest(@JsonProperty("connectionId") String connectionId) {
-      this.connectionId = connectionId;
-    }
-
-    ResultSetResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override CatalogsRequest deserialize(Message genericMsg) {
-      final Requests.CatalogsRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.CatalogsRequest.class);
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      return new CatalogsRequest(connectionId);
-    }
-
-    @Override Requests.CatalogsRequest serialize() {
-      Requests.CatalogsRequest.Builder builder = Requests.CatalogsRequest.newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof CatalogsRequest
-          && Objects.equals(connectionId, ((CatalogsRequest) o).connectionId);
-    }
-  }
-
-  /** Request for
-   * {@link org.apache.calcite.avatica.Meta#getDatabaseProperties(Meta.ConnectionHandle)}. */
-  class DatabasePropertyRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR =
-        Requests.DatabasePropertyRequest.getDescriptor().
-        findFieldByNumber(Requests.DatabasePropertyRequest.CONNECTION_ID_FIELD_NUMBER);
-
-    public final String connectionId;
-
-    public DatabasePropertyRequest() {
-      connectionId = null;
-    }
-
-    @JsonCreator
-    public DatabasePropertyRequest(@JsonProperty("connectionId") String connectionId) {
-      this.connectionId = connectionId;
-    }
-
-    DatabasePropertyResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override DatabasePropertyRequest deserialize(Message genericMsg) {
-      final Requests.DatabasePropertyRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.DatabasePropertyRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      return new DatabasePropertyRequest(connectionId);
-    }
-
-    @Override Requests.DatabasePropertyRequest serialize() {
-      Requests.DatabasePropertyRequest.Builder builder =
-          Requests.DatabasePropertyRequest.newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof DatabasePropertyRequest
-          && Objects.equals(connectionId, ((DatabasePropertyRequest) o).connectionId);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#getSchemas(Meta.ConnectionHandle, String, Meta.Pat)}. */
-  class SchemasRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.SchemasRequest.
-        getDescriptor().findFieldByNumber(Requests.SchemasRequest.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor CATALOG_DESCRIPTOR = Requests.SchemasRequest.
-        getDescriptor().findFieldByNumber(Requests.SchemasRequest.CATALOG_FIELD_NUMBER);
-    private static final FieldDescriptor SCHEMA_PATTERN_DESCRIPTOR = Requests.SchemasRequest.
-        getDescriptor().findFieldByNumber(Requests.SchemasRequest.SCHEMA_PATTERN_FIELD_NUMBER);
-
-    public final String connectionId;
-    public final String catalog;
-    public final String schemaPattern;
-
-    SchemasRequest() {
-      connectionId = null;
-      catalog = null;
-      schemaPattern = null;
-    }
-
-    @JsonCreator
-    public SchemasRequest(@JsonProperty("connectionId") String connectionId,
-        @JsonProperty("catalog") String catalog,
-        @JsonProperty("schemaPattern") String schemaPattern) {
-      this.connectionId = connectionId;
-      this.catalog = catalog;
-      this.schemaPattern = schemaPattern;
-    }
-
-    ResultSetResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override SchemasRequest deserialize(Message genericMsg) {
-      final Requests.SchemasRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.SchemasRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      String catalog = null;
-      if (msg.hasField(CATALOG_DESCRIPTOR)) {
-        catalog = msg.getCatalog();
-      }
-
-      String schemaPattern = null;
-      if (msg.hasField(SCHEMA_PATTERN_DESCRIPTOR)) {
-        schemaPattern = msg.getSchemaPattern();
-      }
-
-      return new SchemasRequest(connectionId, catalog, schemaPattern);
-    }
-
-    @Override Requests.SchemasRequest serialize() {
-      Requests.SchemasRequest.Builder builder = Requests.SchemasRequest.newBuilder();
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-      if (null != catalog) {
-        builder.setCatalog(catalog);
-      }
-      if (null != schemaPattern) {
-        builder.setSchemaPattern(schemaPattern);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, catalog);
-      result = p(result, schemaPattern);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof SchemasRequest
-          && Objects.equals(connectionId, ((SchemasRequest) o).connectionId)
-          && Objects.equals(catalog, ((SchemasRequest) o).catalog)
-          && Objects.equals(schemaPattern, ((SchemasRequest) o).schemaPattern);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#getTables(Meta.ConnectionHandle, String, org.apache.calcite.avatica.Meta.Pat, org.apache.calcite.avatica.Meta.Pat, java.util.List)}
-   */
-  class TablesRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.TablesRequest.
-        getDescriptor().findFieldByNumber(Requests.TablesRequest.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor CATALOG_DESCRIPTOR = Requests.TablesRequest.
-        getDescriptor().findFieldByNumber(Requests.TablesRequest.CATALOG_FIELD_NUMBER);
-    private static final FieldDescriptor SCHEMA_PATTERN_DESCRIPTOR = Requests.TablesRequest.
-        getDescriptor().findFieldByNumber(Requests.TablesRequest.SCHEMA_PATTERN_FIELD_NUMBER);
-    private static final FieldDescriptor TABLE_NAME_PATTERN_DESCRIPTOR = Requests.TablesRequest.
-        getDescriptor().findFieldByNumber(Requests.TablesRequest.TABLE_NAME_PATTERN_FIELD_NUMBER);
-
-    public final String connectionId;
-    public final String catalog;
-    public final String schemaPattern;
-    public final String tableNamePattern;
-    public final List<String> typeList;
-
-    TablesRequest() {
-      connectionId = null;
-      catalog = null;
-      schemaPattern = null;
-      tableNamePattern = null;
-      typeList = null;
-    }
-
-    @JsonCreator
-    public TablesRequest(@JsonProperty("connectionId") String connectionId,
-        @JsonProperty("catalog") String catalog,
-        @JsonProperty("schemaPattern") String schemaPattern,
-        @JsonProperty("tableNamePattern") String tableNamePattern,
-        @JsonProperty("typeList") List<String> typeList) {
-      this.connectionId = connectionId;
-      this.catalog = catalog;
-      this.schemaPattern = schemaPattern;
-      this.tableNamePattern = tableNamePattern;
-      this.typeList = typeList;
-    }
-
-    @Override Response accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override Request deserialize(Message genericMsg) {
-      final Requests.TablesRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.TablesRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      String catalog = null;
-      if (msg.hasField(CATALOG_DESCRIPTOR)) {
-        catalog = msg.getCatalog();
-      }
-
-      String schemaPattern = null;
-      if (msg.hasField(SCHEMA_PATTERN_DESCRIPTOR)) {
-        schemaPattern = msg.getSchemaPattern();
-      }
-
-      String tableNamePattern = null;
-      if (msg.hasField(TABLE_NAME_PATTERN_DESCRIPTOR)) {
-        tableNamePattern = msg.getTableNamePattern();
-      }
-
-      // Cannot determine if a value was set for a repeated field. Must use an extra boolean
-      // parameter to distinguish an empty and null typeList.
-      List<String> typeList = null;
-      if (msg.getHasTypeList()) {
-        typeList = msg.getTypeListList();
-      }
-
-      return new TablesRequest(connectionId, catalog, schemaPattern, tableNamePattern, typeList);
-    }
-
-    @Override Requests.TablesRequest serialize() {
-      Requests.TablesRequest.Builder builder = Requests.TablesRequest.newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-      if (null != catalog) {
-        builder.setCatalog(catalog);
-      }
-      if (null != schemaPattern) {
-        builder.setSchemaPattern(schemaPattern);
-      }
-      if (null != tableNamePattern) {
-        builder.setTableNamePattern(tableNamePattern);
-      }
-      if (null != typeList) {
-        builder.setHasTypeList(true);
-        builder.addAllTypeList(typeList);
-      } else {
-        builder.setHasTypeList(false);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, catalog);
-      result = p(result, schemaPattern);
-      result = p(result, tableNamePattern);
-      result = p(result, typeList);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof TablesRequest
-          && Objects.equals(connectionId, ((TablesRequest) o).connectionId)
-          && Objects.equals(catalog, ((TablesRequest) o).catalog)
-          && Objects.equals(schemaPattern, ((TablesRequest) o).schemaPattern)
-          && Objects.equals(tableNamePattern, ((TablesRequest) o).tableNamePattern)
-          && Objects.equals(typeList, ((TablesRequest) o).typeList);
-    }
-  }
-
-  /**
-   * Request for {@link Meta#getTableTypes(Meta.ConnectionHandle)}.
-   */
-  class TableTypesRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.TableTypesRequest.
-        getDescriptor().findFieldByNumber(Requests.TableTypesRequest.CONNECTION_ID_FIELD_NUMBER);
-    public final String connectionId;
-
-    public TableTypesRequest() {
-      this.connectionId = null;
-    }
-
-    @JsonCreator
-    public TableTypesRequest(@JsonProperty("connectionId") String connectionId) {
-      this.connectionId = connectionId;
-    }
-
-    @Override ResultSetResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override TableTypesRequest deserialize(Message genericMsg) {
-      final Requests.TableTypesRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.TableTypesRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      return new TableTypesRequest(connectionId);
-    }
-
-    @Override Requests.TableTypesRequest serialize() {
-      Requests.TableTypesRequest.Builder builder = Requests.TableTypesRequest.newBuilder();
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof TableTypesRequest
-          && Objects.equals(connectionId, ((TableTypesRequest) o).connectionId);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#getColumns(Meta.ConnectionHandle, String, org.apache.calcite.avatica.Meta.Pat, org.apache.calcite.avatica.Meta.Pat, org.apache.calcite.avatica.Meta.Pat)}.
-   */
-  class ColumnsRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.ColumnsRequest.
-        getDescriptor().findFieldByNumber(Requests.ColumnsRequest.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor CATALOG_DESCRIPTOR = Requests.ColumnsRequest.
-        getDescriptor().findFieldByNumber(Requests.ColumnsRequest.CATALOG_FIELD_NUMBER);
-    private static final FieldDescriptor SCHEMA_PATTERN_DESCRIPTOR = Requests.ColumnsRequest.
-        getDescriptor().findFieldByNumber(Requests.ColumnsRequest.SCHEMA_PATTERN_FIELD_NUMBER);
-    private static final FieldDescriptor TABLE_NAME_PATTERN_DESCRIPTOR = Requests.ColumnsRequest.
-        getDescriptor().findFieldByNumber(Requests.ColumnsRequest.TABLE_NAME_PATTERN_FIELD_NUMBER);
-    private static final FieldDescriptor COLUMN_NAME_PATTERN_DESCRIPTOR = Requests.ColumnsRequest.
-        getDescriptor().findFieldByNumber(Requests.ColumnsRequest.COLUMN_NAME_PATTERN_FIELD_NUMBER);
-
-    public final String connectionId;
-    public final String catalog;
-    public final String schemaPattern;
-    public final String tableNamePattern;
-    public final String columnNamePattern;
-
-    ColumnsRequest() {
-      connectionId = null;
-      catalog = null;
-      schemaPattern = null;
-      tableNamePattern = null;
-      columnNamePattern = null;
-    }
-
-    @JsonCreator
-    public ColumnsRequest(@JsonProperty("connectionId") String connectionId,
-        @JsonProperty("catalog") String catalog,
-        @JsonProperty("schemaPattern") String schemaPattern,
-        @JsonProperty("tableNamePattern") String tableNamePattern,
-        @JsonProperty("columnNamePattern") String columnNamePattern) {
-      this.connectionId = connectionId;
-      this.catalog = catalog;
-      this.schemaPattern = schemaPattern;
-      this.tableNamePattern = tableNamePattern;
-      this.columnNamePattern = columnNamePattern;
-    }
-
-    ResultSetResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override ColumnsRequest deserialize(Message genericMsg) {
-      final Requests.ColumnsRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.ColumnsRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      String catalog = null;
-      if (msg.hasField(CATALOG_DESCRIPTOR)) {
-        catalog = msg.getCatalog();
-      }
-
-      String schemaPattern = null;
-      if (msg.hasField(SCHEMA_PATTERN_DESCRIPTOR)) {
-        schemaPattern = msg.getSchemaPattern();
-      }
-
-      String tableNamePattern = null;
-      if (msg.hasField(TABLE_NAME_PATTERN_DESCRIPTOR)) {
-        tableNamePattern = msg.getTableNamePattern();
-      }
-
-      String columnNamePattern = null;
-      if (msg.hasField(COLUMN_NAME_PATTERN_DESCRIPTOR)) {
-        columnNamePattern = msg.getColumnNamePattern();
-      }
-
-      return new ColumnsRequest(connectionId, catalog, schemaPattern, tableNamePattern,
-          columnNamePattern);
-    }
-
-    @Override Requests.ColumnsRequest serialize() {
-      Requests.ColumnsRequest.Builder builder = Requests.ColumnsRequest.newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-      if (null != catalog) {
-        builder.setCatalog(catalog);
-      }
-      if (null != schemaPattern) {
-        builder.setSchemaPattern(schemaPattern);
-      }
-      if (null != tableNamePattern) {
-        builder.setTableNamePattern(tableNamePattern);
-      }
-      if (null != columnNamePattern) {
-        builder.setColumnNamePattern(columnNamePattern);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, catalog);
-      result = p(result, columnNamePattern);
-      result = p(result, schemaPattern);
-      result = p(result, tableNamePattern);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof ColumnsRequest
-          && Objects.equals(connectionId, ((ColumnsRequest) o).connectionId)
-          && Objects.equals(catalog, ((ColumnsRequest) o).catalog)
-          && Objects.equals(schemaPattern, ((ColumnsRequest) o).schemaPattern)
-          && Objects.equals(tableNamePattern, ((ColumnsRequest) o).tableNamePattern)
-          && Objects.equals(columnNamePattern, ((ColumnsRequest) o).columnNamePattern);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#getTypeInfo(Meta.ConnectionHandle)}. */
-  class TypeInfoRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.TypeInfoRequest.
-        getDescriptor().findFieldByNumber(Requests.TypeInfoRequest.CONNECTION_ID_FIELD_NUMBER);
-    public final String connectionId;
-
-    public TypeInfoRequest() {
-      connectionId = null;
-    }
-
-    @JsonCreator
-    public TypeInfoRequest(@JsonProperty("connectionId") String connectionId) {
-      this.connectionId = connectionId;
-    }
-
-    @Override ResultSetResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override TypeInfoRequest deserialize(Message genericMsg) {
-      final Requests.TypeInfoRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.TypeInfoRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      return new TypeInfoRequest(connectionId);
-    }
-
-    @Override Requests.TypeInfoRequest serialize() {
-      Requests.TypeInfoRequest.Builder builder = Requests.TypeInfoRequest.newBuilder();
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof TypeInfoRequest
-          && Objects.equals(connectionId, ((TypeInfoRequest) o).connectionId);
-    }
-  }
-
-  /** Response that contains a result set.
-   *
-   * <p>Regular result sets have {@code updateCount} -1;
-   * any other value means a dummy result set that is just a count, and has
-   * no signature and no other data.
-   *
-   * <p>Several types of request, including
-   * {@link org.apache.calcite.avatica.Meta#getCatalogs(Meta.ConnectionHandle)} and
-   * {@link org.apache.calcite.avatica.Meta#getSchemas(Meta.ConnectionHandle, String, org.apache.calcite.avatica.Meta.Pat)}
-   * {@link Meta#getTables(Meta.ConnectionHandle, String, Meta.Pat, Meta.Pat, List)}
-   * {@link Meta#getTableTypes(Meta.ConnectionHandle)}
-   * return this response. */
-  class ResultSetResponse extends Response {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Responses.ResultSetResponse.
-        getDescriptor().findFieldByNumber(Responses.ResultSetResponse.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor SIGNATURE_DESCRIPTOR = Responses.ResultSetResponse.
-        getDescriptor().findFieldByNumber(Responses.ResultSetResponse.SIGNATURE_FIELD_NUMBER);
-    private static final FieldDescriptor FIRST_FRAME_DESCRIPTOR = Responses.ResultSetResponse.
-        getDescriptor().findFieldByNumber(Responses.ResultSetResponse.FIRST_FRAME_FIELD_NUMBER);
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.ResultSetResponse.
-        getDescriptor().findFieldByNumber(Responses.ResultSetResponse.METADATA_FIELD_NUMBER);
-
-    public final String connectionId;
-    public final int statementId;
-    public final boolean ownStatement;
-    public final Meta.Signature signature;
-    public final Meta.Frame firstFrame;
-    public final long updateCount;
-    public final RpcMetadataResponse rpcMetadata;
-
-    ResultSetResponse() {
-      connectionId = null;
-      statementId = 0;
-      ownStatement = false;
-      signature = null;
-      firstFrame = null;
-      updateCount = 0;
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public ResultSetResponse(
-        @JsonProperty("connectionId") String connectionId,
-        @JsonProperty("statementId") int statementId,
-        @JsonProperty("ownStatement") boolean ownStatement,
-        @JsonProperty("signature") Meta.Signature signature,
-        @JsonProperty("firstFrame") Meta.Frame firstFrame,
-        @JsonProperty("updateCount") long updateCount,
-        @JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.connectionId = connectionId;
-      this.statementId = statementId;
-      this.ownStatement = ownStatement;
-      this.signature = signature;
-      this.firstFrame = firstFrame;
-      this.updateCount = updateCount;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override ResultSetResponse deserialize(Message genericMsg) {
-      final Responses.ResultSetResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.ResultSetResponse.class);
-
-      return fromProto(msg);
-    }
-
-    static ResultSetResponse fromProto(Responses.ResultSetResponse msg) {
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      Meta.Signature signature = null;
-      if (msg.hasField(SIGNATURE_DESCRIPTOR)) {
-        signature = Meta.Signature.fromProto(msg.getSignature());
-      }
-
-      Meta.Frame frame = null;
-      if (msg.hasField(FIRST_FRAME_DESCRIPTOR)) {
-        frame = Meta.Frame.fromProto(msg.getFirstFrame());
-      }
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new ResultSetResponse(connectionId, msg.getStatementId(), msg.getOwnStatement(),
-          signature, frame, msg.getUpdateCount(), metadata);
-    }
-
-    @Override Responses.ResultSetResponse serialize() {
-      Responses.ResultSetResponse.Builder builder = Responses.ResultSetResponse.newBuilder();
-
-      builder.setStatementId(statementId).setOwnStatement(ownStatement).setUpdateCount(updateCount);
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      if (null != signature) {
-        builder.setSignature(signature.toProto());
-      }
-
-      if (null != firstFrame) {
-        builder.setFirstFrame(firstFrame.toProto());
-      }
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, firstFrame);
-      result = p(result, ownStatement);
-      result = p(result, signature);
-      result = p(result, statementId);
-      result = p(result, updateCount);
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof ResultSetResponse
-          && statementId == ((ResultSetResponse) o).statementId
-          && ownStatement == ((ResultSetResponse) o).ownStatement
-          && updateCount == ((ResultSetResponse) o).updateCount
-          && Objects.equals(connectionId, ((ResultSetResponse) o).connectionId)
-          && Objects.equals(firstFrame, ((ResultSetResponse) o).firstFrame)
-          && Objects.equals(signature, ((ResultSetResponse) o).signature)
-          && Objects.equals(rpcMetadata, ((ResultSetResponse) o).rpcMetadata);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#prepareAndExecute(Meta.StatementHandle, String, long, int, Meta.PrepareCallback)}.
-   */
-  class PrepareAndExecuteRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.
-        PrepareAndExecuteRequest.getDescriptor().findFieldByNumber(
-            Requests.PrepareAndExecuteRequest.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor SQL_DESCRIPTOR = Requests.
-        PrepareAndExecuteRequest.getDescriptor().findFieldByNumber(
-            Requests.PrepareAndExecuteRequest.SQL_FIELD_NUMBER);
-    private static final FieldDescriptor MAX_ROWS_TOTAL_DESCRIPTOR = Requests.
-        PrepareAndExecuteRequest.getDescriptor().findFieldByNumber(
-            Requests.PrepareAndExecuteRequest.MAX_ROWS_TOTAL_FIELD_NUMBER);
-    private static final FieldDescriptor FIRST_FRAME_MAX_SIZE_DESCRIPTOR = Requests.
-        PrepareAndExecuteRequest.getDescriptor().findFieldByNumber(
-            Requests.PrepareAndExecuteRequest.FIRST_FRAME_MAX_SIZE_FIELD_NUMBER);
-
-    public final String connectionId;
-    public final String sql;
-    public final long maxRowCount;
-    public final int maxRowsInFirstFrame;
-    public final int statementId;
-
-    PrepareAndExecuteRequest() {
-      connectionId = null;
-      sql = null;
-      maxRowCount = 0;
-      maxRowsInFirstFrame = 0;
-      statementId = 0;
-    }
-
-    public PrepareAndExecuteRequest(String connectionId, int statementId, String sql,
-        long maxRowCount) {
-      this(connectionId, statementId, sql, maxRowCount, AvaticaUtils.toSaturatedInt(maxRowCount));
-    }
-
-    @JsonCreator
-    public PrepareAndExecuteRequest(
-        @JsonProperty("connectionId") String connectionId,
-        @JsonProperty("statementId") int statementId,
-        @JsonProperty("sql") String sql,
-        @JsonProperty("maxRowsTotal") long maxRowCount,
-        @JsonProperty("maxRowsInFirstFrame") int maxRowsInFirstFrame) {
-      this.connectionId = connectionId;
-      this.statementId = statementId;
-      this.sql = sql;
-      this.maxRowCount = maxRowCount;
-      this.maxRowsInFirstFrame = maxRowsInFirstFrame;
-    }
-
-    @Override ExecuteResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override PrepareAndExecuteRequest deserialize(Message genericMsg) {
-      final Requests.PrepareAndExecuteRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.PrepareAndExecuteRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      String sql = null;
-      if (msg.hasField(SQL_DESCRIPTOR)) {
-        sql = msg.getSql();
-      }
-
-      // Use the old attribute, unless the new is set
-      long maxRowsTotal = msg.getMaxRowCount();
-      if (msg.hasField(MAX_ROWS_TOTAL_DESCRIPTOR)) {
-        maxRowsTotal = msg.getMaxRowsTotal();
-      }
-
-      // Use maxRowCount (cast to an integer) if firstFrameMaxSize isn't set
-      int maxRowsInFirstFrame = (int) maxRowsTotal;
-      if (msg.hasField(FIRST_FRAME_MAX_SIZE_DESCRIPTOR)) {
-        maxRowsInFirstFrame = msg.getFirstFrameMaxSize();
-      }
-
-      return new PrepareAndExecuteRequest(connectionId, msg.getStatementId(), sql,
-          maxRowsTotal, maxRowsInFirstFrame);
-    }
-
-    @Override Requests.PrepareAndExecuteRequest serialize() {
-      Requests.PrepareAndExecuteRequest.Builder builder = Requests.PrepareAndExecuteRequest
-          .newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-      if (null != sql) {
-        builder.setSql(sql);
-      }
-      builder.setStatementId(statementId);
-      // Set both attributes for backwards compat
-      builder.setMaxRowCount(maxRowCount).setMaxRowsTotal(maxRowCount);
-      builder.setFirstFrameMaxSize(maxRowsInFirstFrame);
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, maxRowCount);
-      result = p(result, maxRowsInFirstFrame);
-      result = p(result, sql);
-      result = p(result, statementId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof PrepareAndExecuteRequest
-          && statementId == ((PrepareAndExecuteRequest) o).statementId
-          && maxRowCount == ((PrepareAndExecuteRequest) o).maxRowCount
-          && maxRowsInFirstFrame == ((PrepareAndExecuteRequest) o).maxRowsInFirstFrame
-          && Objects.equals(connectionId, ((PrepareAndExecuteRequest) o).connectionId)
-          && Objects.equals(sql, ((PrepareAndExecuteRequest) o).sql);
-    }
-  }
-
-  /** Request for
-   * {@link org.apache.calcite.avatica.Meta#execute}. */
-  class ExecuteRequest extends Request {
-    private static final FieldDescriptor STATEMENT_HANDLE_DESCRIPTOR = Requests.ExecuteRequest.
-        getDescriptor().findFieldByNumber(Requests.ExecuteRequest.STATEMENTHANDLE_FIELD_NUMBER);
-    public final Meta.StatementHandle statementHandle;
-    public final List<TypedValue> parameterValues;
-    public final long maxRowCount;
-
-    ExecuteRequest() {
-      statementHandle = null;
-      parameterValues = null;
-      maxRowCount = 0;
-    }
-
-    @JsonCreator
-    public ExecuteRequest(
-        @JsonProperty("statementHandle") Meta.StatementHandle statementHandle,
-        @JsonProperty("parameterValues") List<TypedValue> parameterValues,
-        @JsonProperty("maxRowCount") long maxRowCount) {
-      this.statementHandle = statementHandle;
-      this.parameterValues = parameterValues;
-      this.maxRowCount = maxRowCount;
-    }
-
-    @Override ExecuteResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override ExecuteRequest deserialize(Message genericMsg) {
-      final Requests.ExecuteRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.ExecuteRequest.class);
-
-      Meta.StatementHandle statementHandle = null;
-      if (msg.hasField(STATEMENT_HANDLE_DESCRIPTOR)) {
-        statementHandle = Meta.StatementHandle.fromProto(msg.getStatementHandle());
-      }
-
-      List<TypedValue> values = null;
-      if (msg.getHasParameterValues()) {
-        values = new ArrayList<>(msg.getParameterValuesCount());
-        for (Common.TypedValue valueProto : msg.getParameterValuesList()) {
-          values.add(TypedValue.fromProto(valueProto));
-        }
-      }
-
-      return new ExecuteRequest(statementHandle, values, msg.getFirstFrameMaxSize());
-    }
-
-    @Override Requests.ExecuteRequest serialize() {
-      Requests.ExecuteRequest.Builder builder = Requests.ExecuteRequest.newBuilder();
-
-      if (null != statementHandle) {
-        builder.setStatementHandle(statementHandle.toProto());
-      }
-
-      if (null != parameterValues) {
-        builder.setHasParameterValues(true);
-        for (TypedValue paramValue : parameterValues) {
-          if (paramValue == null) {
-            builder.addParameterValues(TypedValue.NULL.toProto());
-          } else {
-            builder.addParameterValues(paramValue.toProto());
-          }
-        }
-      } else {
-        builder.setHasParameterValues(false);
-      }
-
-      builder.setFirstFrameMaxSize(maxRowCount);
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, statementHandle);
-      result = p(result, parameterValues);
-      result = p(result, maxRowCount);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof ExecuteRequest
-          && maxRowCount == ((ExecuteRequest) o).maxRowCount
-          && Objects.equals(statementHandle, ((ExecuteRequest) o).statementHandle)
-          && Objects.equals(parameterValues, ((ExecuteRequest) o).parameterValues);
-    }
-  }
-
-  /** Response to a
-   * {@link org.apache.calcite.avatica.remote.Service.PrepareAndExecuteRequest}. */
-  class ExecuteResponse extends Response {
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.ExecuteResponse.
-        getDescriptor().findFieldByNumber(Responses.ExecuteResponse.METADATA_FIELD_NUMBER);
-    public final List<ResultSetResponse> results;
-    public boolean missingStatement = false;
-    public final RpcMetadataResponse rpcMetadata;
-
-    ExecuteResponse() {
-      results = null;
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public ExecuteResponse(@JsonProperty("resultSets") List<ResultSetResponse> results,
-        @JsonProperty("missingStatement") boolean missingStatement,
-        @JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.results = results;
-      this.missingStatement = missingStatement;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override ExecuteResponse deserialize(Message genericMsg) {
-      final Responses.ExecuteResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.ExecuteResponse.class);
-
-      List<Responses.ResultSetResponse> msgResults = msg.getResultsList();
-      List<ResultSetResponse> copiedResults = new ArrayList<>(msgResults.size());
-
-      for (Responses.ResultSetResponse msgResult : msgResults) {
-        copiedResults.add(ResultSetResponse.fromProto(msgResult));
-      }
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new ExecuteResponse(copiedResults, msg.getMissingStatement(), metadata);
-    }
-
-    @Override Responses.ExecuteResponse serialize() {
-      Responses.ExecuteResponse.Builder builder = Responses.ExecuteResponse.newBuilder();
-
-      if (null != results) {
-        for (ResultSetResponse result : results) {
-          builder.addResults(result.serialize());
-        }
-      }
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.setMissingStatement(missingStatement).build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, results);
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof ExecuteResponse
-          && Objects.equals(results, ((ExecuteResponse) o).results)
-          && Objects.equals(rpcMetadata, ((ExecuteResponse) o).rpcMetadata);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#prepare(Meta.ConnectionHandle, String, long)}. */
-  class PrepareRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.PrepareRequest.
-        getDescriptor().findFieldByNumber(Requests.PrepareRequest.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor SQL_DESCRIPTOR = Requests.PrepareRequest.
-        getDescriptor().findFieldByNumber(Requests.PrepareRequest.SQL_FIELD_NUMBER);
-    private static final FieldDescriptor MAX_ROWS_TOTAL_DESCRIPTOR = Requests.PrepareRequest.
-        getDescriptor().findFieldByNumber(Requests.PrepareRequest.MAX_ROWS_TOTAL_FIELD_NUMBER);
-
-    public final String connectionId;
-    public final String sql;
-    public final long maxRowCount;
-
-    PrepareRequest() {
-      connectionId = null;
-      sql = null;
-      maxRowCount = 0;
-    }
-
-    @JsonCreator
-    public PrepareRequest(
-        @JsonProperty("connectionId") String connectionId,
-        @JsonProperty("sql") String sql,
-        @JsonProperty("maxRowCount") long maxRowCount) {
-      this.connectionId = connectionId;
-      this.sql = sql;
-      this.maxRowCount = maxRowCount;
-    }
-
-    @Override PrepareResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override PrepareRequest deserialize(Message genericMsg) {
-      final Requests.PrepareRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.PrepareRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      String sql = null;
-      if (msg.hasField(SQL_DESCRIPTOR)) {
-        sql = msg.getSql();
-      }
-
-      // Use the old field unless the new field is provided
-      long totalRowsForStatement = msg.getMaxRowCount();
-      if (msg.hasField(MAX_ROWS_TOTAL_DESCRIPTOR)) {
-        totalRowsForStatement = msg.getMaxRowsTotal();
-      }
-
-      return new PrepareRequest(connectionId, sql, totalRowsForStatement);
-    }
-
-    @Override Requests.PrepareRequest serialize() {
-      Requests.PrepareRequest.Builder builder = Requests.PrepareRequest.newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      if (null != sql) {
-        builder.setSql(sql);
-      }
-
-      // Set both field for backwards compatibility
-      return builder.setMaxRowCount(maxRowCount).setMaxRowsTotal(maxRowCount).build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, maxRowCount);
-      result = p(result, sql);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof PrepareRequest
-          && maxRowCount == ((PrepareRequest) o).maxRowCount
-          && Objects.equals(connectionId, ((PrepareRequest) o).connectionId)
-          && Objects.equals(sql, ((PrepareRequest) o).sql);
-    }
-  }
-
-  /** Response from
-   * {@link org.apache.calcite.avatica.remote.Service.PrepareRequest}. */
-  class PrepareResponse extends Response {
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.PrepareResponse.
-        getDescriptor().findFieldByNumber(Responses.PrepareResponse.METADATA_FIELD_NUMBER);
-    public final Meta.StatementHandle statement;
-    public final RpcMetadataResponse rpcMetadata;
-
-    PrepareResponse() {
-      statement = null;
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public PrepareResponse(
-        @JsonProperty("statement") Meta.StatementHandle statement,
-        @JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.statement = statement;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override PrepareResponse deserialize(Message genericMsg) {
-      final Responses.PrepareResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.PrepareResponse.class);
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new PrepareResponse(Meta.StatementHandle.fromProto(msg.getStatement()), metadata);
-    }
-
-    @Override Responses.PrepareResponse serialize() {
-      Responses.PrepareResponse.Builder builder = Responses.PrepareResponse.newBuilder();
-
-      if (null != statement) {
-        builder.setStatement(statement.toProto());
-      }
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, statement);
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof PrepareResponse
-          && Objects.equals(statement, ((PrepareResponse) o).statement)
-          && Objects.equals(rpcMetadata, ((PrepareResponse) o).rpcMetadata);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#fetch}. */
-  class FetchRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.FetchRequest.
-        getDescriptor().findFieldByNumber(Requests.FetchRequest.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor FRAME_MAX_SIZE_DESCRIPTOR = Requests.FetchRequest.
-        getDescriptor().findFieldByNumber(Requests.FetchRequest.FRAME_MAX_SIZE_FIELD_NUMBER);
-
-    public final String connectionId;
-    public final int statementId;
-    public final long offset;
-    /** Maximum number of rows to be returned in the frame. Negative means no
-     * limit. */
-    public final int fetchMaxRowCount;
-
-    FetchRequest() {
-      connectionId = null;
-      statementId = 0;
-      offset = 0;
-      fetchMaxRowCount = 0;
-    }
-
-    @JsonCreator
-    public FetchRequest(
-        @JsonProperty("connectionId") String connectionId,
-        @JsonProperty("statementId") int statementId,
-        @JsonProperty("offset") long offset,
-        @JsonProperty("fetchMaxRowCount") int fetchMaxRowCount) {
-      this.connectionId = connectionId;
-      this.statementId = statementId;
-      this.offset = offset;
-      this.fetchMaxRowCount = fetchMaxRowCount;
-    }
-
-    @Override FetchResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override FetchRequest deserialize(Message genericMsg) {
-      final Requests.FetchRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.FetchRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      int fetchMaxRowCount = msg.getFetchMaxRowCount();
-      if (msg.hasField(FRAME_MAX_SIZE_DESCRIPTOR)) {
-        fetchMaxRowCount = msg.getFrameMaxSize();
-      }
-
-      return new FetchRequest(connectionId, msg.getStatementId(), msg.getOffset(),
-          fetchMaxRowCount);
-    }
-
-    @Override Requests.FetchRequest serialize() {
-      Requests.FetchRequest.Builder builder = Requests.FetchRequest.newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      builder.setStatementId(statementId);
-      builder.setOffset(offset);
-      // Both fields for backwards compat
-      builder.setFetchMaxRowCount(fetchMaxRowCount).setFrameMaxSize(fetchMaxRowCount);
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, fetchMaxRowCount);
-      result = p(result, offset);
-      result = p(result, statementId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof FetchRequest
-          && statementId == ((FetchRequest) o).statementId
-          && offset == ((FetchRequest) o).offset
-          && fetchMaxRowCount == ((FetchRequest) o).fetchMaxRowCount
-          && Objects.equals(connectionId, ((FetchRequest) o).connectionId);
-    }
-  }
-
-  /** Response from
-   * {@link org.apache.calcite.avatica.remote.Service.FetchRequest}. */
-  class FetchResponse extends Response {
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.FetchResponse.
-        getDescriptor().findFieldByNumber(Responses.FetchResponse.METADATA_FIELD_NUMBER);
-    public final Meta.Frame frame;
-    public boolean missingStatement = false;
-    public boolean missingResults = false;
-    public final RpcMetadataResponse rpcMetadata;
-
-    FetchResponse() {
-      frame = null;
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public FetchResponse(@JsonProperty("frame") Meta.Frame frame,
-        @JsonProperty("missingStatement") boolean missingStatement,
-        @JsonProperty("missingResults") boolean missingResults,
-        @JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.frame = frame;
-      this.missingStatement = missingStatement;
-      this.missingResults = missingResults;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override FetchResponse deserialize(Message genericMsg) {
-      final Responses.FetchResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.FetchResponse.class);
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new FetchResponse(Meta.Frame.fromProto(msg.getFrame()), msg.getMissingStatement(),
-          msg.getMissingResults(), metadata);
-    }
-
-    @Override Responses.FetchResponse serialize() {
-      Responses.FetchResponse.Builder builder = Responses.FetchResponse.newBuilder();
-
-      if (null != frame) {
-        builder.setFrame(frame.toProto());
-      }
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.setMissingStatement(missingStatement)
-          .setMissingResults(missingResults).build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, frame);
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof FetchResponse
-          && Objects.equals(frame, ((FetchResponse) o).frame)
-          && Objects.equals(rpcMetadata, ((FetchResponse) o).rpcMetadata)
-          && missingStatement == ((FetchResponse) o).missingStatement;
-    }
-  }
-
-  /** Request for
-   * {@link org.apache.calcite.avatica.Meta#createStatement(org.apache.calcite.avatica.Meta.ConnectionHandle)}. */
-  class CreateStatementRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.CreateStatementRequest.
-        getDescriptor().findFieldByNumber(
-            Requests.CreateStatementRequest.CONNECTION_ID_FIELD_NUMBER);
-    public final String connectionId;
-
-    CreateStatementRequest() {
-      connectionId = null;
-    }
-
-    @JsonCreator
-    public CreateStatementRequest(
-        @JsonProperty("signature") String connectionId) {
-      this.connectionId = connectionId;
-    }
-
-    @Override CreateStatementResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override CreateStatementRequest deserialize(Message genericMsg) {
-      final Requests.CreateStatementRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.CreateStatementRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      return new CreateStatementRequest(connectionId);
-    }
-
-    @Override Requests.CreateStatementRequest serialize() {
-      Requests.CreateStatementRequest.Builder builder = Requests.CreateStatementRequest
-          .newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof CreateStatementRequest
-          && Objects.equals(connectionId, ((CreateStatementRequest) o).connectionId);
-    }
-  }
-
-  /** Response from
-   * {@link org.apache.calcite.avatica.remote.Service.CreateStatementRequest}. */
-  class CreateStatementResponse extends Response {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Responses.
-        CreateStatementResponse.getDescriptor().findFieldByNumber(
-            Responses.CreateStatementResponse.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.
-        CreateStatementResponse.getDescriptor().findFieldByNumber(
-            Responses.CreateStatementResponse.METADATA_FIELD_NUMBER);
-    public final String connectionId;
-    public final int statementId;
-    public final RpcMetadataResponse rpcMetadata;
-
-    CreateStatementResponse() {
-      connectionId = null;
-      statementId = 0;
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public CreateStatementResponse(
-        @JsonProperty("connectionId") String connectionId,
-        @JsonProperty("statementId") int statementId,
-        @JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.connectionId = connectionId;
-      this.statementId = statementId;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override CreateStatementResponse deserialize(Message genericMsg) {
-      final Responses.CreateStatementResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.CreateStatementResponse.class);
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new CreateStatementResponse(connectionId, msg.getStatementId(), metadata);
-    }
-
-    @Override Responses.CreateStatementResponse serialize() {
-      Responses.CreateStatementResponse.Builder builder = Responses.CreateStatementResponse
-          .newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      builder.setStatementId(statementId);
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, statementId);
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof CreateStatementResponse
-          && statementId == ((CreateStatementResponse) o).statementId
-          && Objects.equals(connectionId, ((CreateStatementResponse) o).connectionId)
-          && Objects.equals(rpcMetadata, ((CreateStatementResponse) o).rpcMetadata);
-    }
-  }
-
-  /** Request for
-   * {@link org.apache.calcite.avatica.Meta#closeStatement(org.apache.calcite.avatica.Meta.StatementHandle)}. */
-  class CloseStatementRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.CloseStatementRequest.
-        getDescriptor().findFieldByNumber(
-            Requests.CloseStatementRequest.CONNECTION_ID_FIELD_NUMBER);
-    public final String connectionId;
-    public final int statementId;
-
-    CloseStatementRequest() {
-      connectionId = null;
-      statementId = 0;
-    }
-
-    @JsonCreator
-    public CloseStatementRequest(
-        @JsonProperty("connectionId") String connectionId,
-        @JsonProperty("statementId") int statementId) {
-      this.connectionId = connectionId;
-      this.statementId = statementId;
-    }
-
-    @Override CloseStatementResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override CloseStatementRequest deserialize(Message genericMsg) {
-      final Requests.CloseStatementRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.CloseStatementRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      return new CloseStatementRequest(connectionId, msg.getStatementId());
-    }
-
-    @Override Requests.CloseStatementRequest serialize() {
-      Requests.CloseStatementRequest.Builder builder = Requests.CloseStatementRequest.newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      return builder.setStatementId(statementId).build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, statementId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof CloseStatementRequest
-          && statementId == ((CloseStatementRequest) o).statementId
-          && Objects.equals(connectionId, ((CloseStatementRequest) o).connectionId);
-    }
-  }
-
-  /** Response from
-   * {@link org.apache.calcite.avatica.remote.Service.CloseStatementRequest}. */
-  class CloseStatementResponse extends Response {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Responses.
-        CloseStatementResponse.getDescriptor().findFieldByNumber(
-            Responses.CloseStatementResponse.METADATA_FIELD_NUMBER);
-
-    public final RpcMetadataResponse rpcMetadata;
-
-    public CloseStatementResponse() {
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public CloseStatementResponse(@JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override CloseStatementResponse deserialize(Message genericMsg) {
-      final Responses.CloseStatementResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.CloseStatementResponse.class);
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new CloseStatementResponse(metadata);
-    }
-
-    @Override Responses.CloseStatementResponse serialize() {
-      Responses.CloseStatementResponse.Builder builder =
-          Responses.CloseStatementResponse.newBuilder();
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof CloseStatementResponse
-          && Objects.equals(rpcMetadata, ((CloseStatementResponse) o).rpcMetadata);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#openConnection}. */
-  class OpenConnectionRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.OpenConnectionRequest
-        .getDescriptor().findFieldByNumber(
-            Requests.OpenConnectionRequest.CONNECTION_ID_FIELD_NUMBER);
-    public final String connectionId;
-    public final Map<String, String> info;
-
-    public OpenConnectionRequest() {
-      connectionId = null;
-      info = null;
-    }
-
-    @JsonCreator
-    public OpenConnectionRequest(@JsonProperty("connectionId") String connectionId,
-        @JsonProperty("info") Map<String, String> info) {
-      this.connectionId = connectionId;
-      this.info = info;
-    }
-
-    @Override OpenConnectionResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    /**
-     * Serializes the necessary properties into a Map.
-     *
-     * @param props The properties to serialize.
-     * @return A representation of the Properties as a Map.
-     */
-    public static Map<String, String> serializeProperties(Properties props) {
-      Map<String, String> infoAsString = new HashMap<>();
-      for (Map.Entry<Object, Object> entry : props.entrySet()) {
-        // Determine if this is a property we want to forward to the server
-        if (!BuiltInConnectionProperty.isLocalProperty(entry.getKey())) {
-          infoAsString.put(entry.getKey().toString(), entry.getValue().toString());
-        }
-      }
-      return infoAsString;
-    }
-
-    @Override Request deserialize(Message genericMsg) {
-      final Requests.OpenConnectionRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.OpenConnectionRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      Map<String, String> info = msg.getInfoMap();
-      if (info.isEmpty()) {
-        info = null;
-      }
-
-      return new OpenConnectionRequest(connectionId, info);
-    }
-
-    @Override Message serialize() {
-      Requests.OpenConnectionRequest.Builder builder = Requests.OpenConnectionRequest.newBuilder();
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-      if (null != info) {
-        builder.putAllInfo(info);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      result = p(result, info);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof OpenConnectionRequest
-          && Objects.equals(connectionId, ((OpenConnectionRequest) o).connectionId)
-          && Objects.equals(info, ((OpenConnectionRequest) o).info);
-    }
-  }
-
-  /** Response from
-   * {@link org.apache.calcite.avatica.remote.Service.OpenConnectionRequest}. */
-  class OpenConnectionResponse extends Response {
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.OpenConnectionResponse
-        .getDescriptor().findFieldByNumber(
-            Responses.OpenConnectionResponse.METADATA_FIELD_NUMBER);
-    public final RpcMetadataResponse rpcMetadata;
-
-    public OpenConnectionResponse() {
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public OpenConnectionResponse(@JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override OpenConnectionResponse deserialize(Message genericMsg) {
-      final Responses.OpenConnectionResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.OpenConnectionResponse.class);
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new OpenConnectionResponse(metadata);
-    }
-
-    @Override Responses.OpenConnectionResponse serialize() {
-      Responses.OpenConnectionResponse.Builder builder =
-          Responses.OpenConnectionResponse.newBuilder();
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof OpenConnectionResponse
-          && Objects.equals(rpcMetadata, ((OpenConnectionResponse) o).rpcMetadata);
-    }
-  }
-
-  /** Request for
-   * {@link Meta#closeConnection(org.apache.calcite.avatica.Meta.ConnectionHandle)}. */
-  class CloseConnectionRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.CloseConnectionRequest
-        .getDescriptor().findFieldByNumber(
-            Requests.CloseConnectionRequest.CONNECTION_ID_FIELD_NUMBER);
-    public final String connectionId;
-
-    CloseConnectionRequest() {
-      connectionId = null;
-    }
-
-    @JsonCreator
-    public CloseConnectionRequest(
-        @JsonProperty("connectionId") String connectionId) {
-      this.connectionId = connectionId;
-    }
-
-    @Override CloseConnectionResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override CloseConnectionRequest deserialize(Message genericMsg) {
-      final Requests.CloseConnectionRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.CloseConnectionRequest.class);
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      return new CloseConnectionRequest(connectionId);
-    }
-
-    @Override Requests.CloseConnectionRequest serialize() {
-      Requests.CloseConnectionRequest.Builder builder = Requests.CloseConnectionRequest
-          .newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connectionId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof CloseConnectionRequest
-          && Objects.equals(connectionId, ((CloseConnectionRequest) o).connectionId);
-    }
-  }
-
-  /** Response from
-   * {@link org.apache.calcite.avatica.remote.Service.CloseConnectionRequest}. */
-  class CloseConnectionResponse extends Response {
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.CloseConnectionResponse
-        .getDescriptor().findFieldByNumber(
-            Responses.CloseConnectionResponse.METADATA_FIELD_NUMBER);
-
-    public final RpcMetadataResponse rpcMetadata;
-
-    public CloseConnectionResponse() {
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public CloseConnectionResponse(@JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override CloseConnectionResponse deserialize(Message genericMsg) {
-      final Responses.CloseConnectionResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.CloseConnectionResponse.class);
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new CloseConnectionResponse(metadata);
-    }
-
-    @Override Responses.CloseConnectionResponse serialize() {
-      Responses.CloseConnectionResponse.Builder builder =
-          Responses.CloseConnectionResponse.newBuilder();
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof CloseConnectionResponse
-          && Objects.equals(rpcMetadata, ((CloseConnectionResponse) o).rpcMetadata);
-    }
-  }
-
-  /** Request for {@link Meta#connectionSync(Meta.ConnectionHandle, Meta.ConnectionProperties)}. */
-  class ConnectionSyncRequest extends Request {
-    private static final FieldDescriptor CONNECTION_ID_DESCRIPTOR = Requests.ConnectionSyncRequest
-        .getDescriptor().findFieldByNumber(
-            Requests.ConnectionSyncRequest.CONNECTION_ID_FIELD_NUMBER);
-    private static final FieldDescriptor CONN_PROPS_DESCRIPTOR = Requests.ConnectionSyncRequest
-        .getDescriptor().findFieldByNumber(Requests.ConnectionSyncRequest.CONN_PROPS_FIELD_NUMBER);
-
-    public final String connectionId;
-    public final Meta.ConnectionProperties connProps;
-
-    ConnectionSyncRequest() {
-      connectionId = null;
-      connProps = null;
-    }
-
-    @JsonCreator
-    public ConnectionSyncRequest(
-        @JsonProperty("connectionId") String connectionId,
-        @JsonProperty("connProps") Meta.ConnectionProperties connProps) {
-      this.connectionId = connectionId;
-      this.connProps = connProps;
-    }
-
-    @Override ConnectionSyncResponse accept(Service service) {
-      return service.apply(this);
-    }
-
-    @Override ConnectionSyncRequest deserialize(Message genericMsg) {
-      final Requests.ConnectionSyncRequest msg = ProtobufService.castProtobufMessage(genericMsg,
-          Requests.ConnectionSyncRequest.class);
-
-      String connectionId = null;
-      if (msg.hasField(CONNECTION_ID_DESCRIPTOR)) {
-        connectionId = msg.getConnectionId();
-      }
-
-      Meta.ConnectionProperties connProps = null;
-      if (msg.hasField(CONN_PROPS_DESCRIPTOR)) {
-        connProps = ConnectionPropertiesImpl.fromProto(msg.getConnProps());
-      }
-
-      return new ConnectionSyncRequest(connectionId, connProps);
-    }
-
-    @Override Requests.ConnectionSyncRequest serialize() {
-      Requests.ConnectionSyncRequest.Builder builder = Requests.ConnectionSyncRequest.newBuilder();
-
-      if (null != connectionId) {
-        builder.setConnectionId(connectionId);
-      }
-
-      if (null != connProps) {
-        builder.setConnProps(connProps.toProto());
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connProps);
-      result = p(result, connectionId);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof ConnectionSyncRequest
-          && Objects.equals(connectionId, ((ConnectionSyncRequest) o).connectionId)
-          && Objects.equals(connProps, ((ConnectionSyncRequest) o).connProps);
-    }
-  }
-
-  /** Response for
-   * {@link Meta#connectionSync(Meta.ConnectionHandle, Meta.ConnectionProperties)}. */
-  class ConnectionSyncResponse extends Response {
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.ConnectionSyncResponse
-        .getDescriptor().findFieldByNumber(Responses.ConnectionSyncResponse.METADATA_FIELD_NUMBER);
-    public final Meta.ConnectionProperties connProps;
-    public final RpcMetadataResponse rpcMetadata;
-
-    ConnectionSyncResponse() {
-      connProps = null;
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public ConnectionSyncResponse(@JsonProperty("connProps") Meta.ConnectionProperties connProps,
-        @JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.connProps = connProps;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override ConnectionSyncResponse deserialize(Message genericMsg) {
-      final Responses.ConnectionSyncResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.ConnectionSyncResponse.class);
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new ConnectionSyncResponse(ConnectionPropertiesImpl.fromProto(msg.getConnProps()),
-          metadata);
-    }
-
-    @Override Responses.ConnectionSyncResponse serialize() {
-      Responses.ConnectionSyncResponse.Builder builder = Responses.ConnectionSyncResponse
-          .newBuilder();
-
-      if (null != connProps) {
-        builder.setConnProps(connProps.toProto());
-      }
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, connProps);
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof ConnectionSyncResponse
-          && Objects.equals(connProps, ((ConnectionSyncResponse) o).connProps)
-          && Objects.equals(rpcMetadata, ((ConnectionSyncResponse) o).rpcMetadata);
-    }
-  }
-
-  /** Response for
-   * {@link Meta#getDatabaseProperties(Meta.ConnectionHandle)}. */
-  class DatabasePropertyResponse extends Response {
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.DatabasePropertyResponse
-        .getDescriptor().findFieldByNumber(
-            Responses.DatabasePropertyResponse.METADATA_FIELD_NUMBER);
-    public final Map<Meta.DatabaseProperty, Object> map;
-    public final RpcMetadataResponse rpcMetadata;
-
-    DatabasePropertyResponse() {
-      map = null;
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public DatabasePropertyResponse(@JsonProperty("map") Map<Meta.DatabaseProperty, Object> map,
-        @JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.map = map;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    @Override DatabasePropertyResponse deserialize(Message genericMsg) {
-      final Responses.DatabasePropertyResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.DatabasePropertyResponse.class);
-      HashMap<Meta.DatabaseProperty, Object> properties = new HashMap<>();
-      for (Responses.DatabasePropertyElement property : msg.getPropsList()) {
-        final Meta.DatabaseProperty dbProp = Meta.DatabaseProperty.fromProto(property.getKey());
-        final Common.TypedValue value = property.getValue();
-
-        Object obj;
-        switch (dbProp) {
-        // Just need to keep parity with the exposed values on DatabaseProperty
-        case GET_NUMERIC_FUNCTIONS:
-        case GET_STRING_FUNCTIONS:
-        case GET_SYSTEM_FUNCTIONS:
-        case GET_TIME_DATE_FUNCTIONS:
-        case GET_S_Q_L_KEYWORDS:
-          // String
-          if (Common.Rep.STRING != value.getType()) {
-            throw new IllegalArgumentException("Expected STRING, but got " + value.getType());
-          }
-
-          obj = value.getStringValue();
-          break;
-        case GET_DEFAULT_TRANSACTION_ISOLATION:
-          // int
-          if (Common.Rep.INTEGER != value.getType()) {
-            throw new IllegalArgumentException("Expected INTEGER, but got " + value.getType());
-          }
-
-          obj = (int) value.getNumberValue();
-          break;
-        default:
-          switch (value.getType()) {
-          case INTEGER:
-            obj = Long.valueOf(value.getNumberValue()).intValue();
-            break;
-          case STRING:
-            obj = value.getStringValue();
-            break;
-          default:
-            throw new IllegalArgumentException("Unhandled value type, " + value.getType());
-          }
-
-          break;
-        }
-
-        properties.put(dbProp, obj);
-      }
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new DatabasePropertyResponse(properties, metadata);
-    }
-
-    @Override Responses.DatabasePropertyResponse serialize() {
-      Responses.DatabasePropertyResponse.Builder builder = Responses.DatabasePropertyResponse
-          .newBuilder();
-
-      if (null != map) {
-        for (Entry<Meta.DatabaseProperty, Object> entry : map.entrySet()) {
-          Object obj = entry.getValue();
-
-          Common.TypedValue.Builder valueBuilder = Common.TypedValue.newBuilder();
-          switch (entry.getKey()) {
-          // Just need to keep parity with the exposed values on DatabaseProperty
-          case GET_NUMERIC_FUNCTIONS:
-          case GET_STRING_FUNCTIONS:
-          case GET_SYSTEM_FUNCTIONS:
-          case GET_TIME_DATE_FUNCTIONS:
-          case GET_S_Q_L_KEYWORDS:
-            // String
-            if (!(obj instanceof String)) {
-              throw new RuntimeException("Expected a String, but got " + obj.getClass());
-            }
-
-            valueBuilder.setType(Common.Rep.STRING).setStringValue((String) obj);
-            break;
-          case GET_DEFAULT_TRANSACTION_ISOLATION:
-            // int
-            if (!(obj instanceof Integer)) {
-              throw new RuntimeException("Expected an Integer, but got " + obj.getClass());
-            }
-
-            valueBuilder.setType(Common.Rep.INTEGER).setNumberValue(((Integer) obj).longValue());
-            break;
-          default:
-            if (obj instanceof Integer) {
-              valueBuilder.setType(Common.Rep.INTEGER).setNumberValue((Integer) obj);
-            } else {
-              String value;
-              if (obj instanceof String) {
-                value = (String) obj;
-              } else {
-                value = obj.toString();
-              }
-              valueBuilder.setType(Common.Rep.STRING).setStringValue(value);
-            }
-
-            break;
-          }
-
-          builder.addProps(Responses.DatabasePropertyElement.newBuilder()
-              .setKey(entry.getKey().toProto()).setValue(valueBuilder.build()));
-        }
-      }
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      return builder.build();
-    }
-
-    @Override public int hashCode() {
-      int result = 1;
-      result = p(result, map);
-      result = p(result, rpcMetadata);
-      return result;
-    }
-
-    @Override public boolean equals(Object o) {
-      return o == this
-          || o instanceof DatabasePropertyResponse
-          && Objects.equals(map, ((DatabasePropertyResponse) o).map)
-          && Objects.equals(rpcMetadata, ((DatabasePropertyResponse) o).rpcMetadata);
-    }
-  }
-
-  /**
-   * Response for any request that the server failed to successfully perform.
-   * It is used internally by the transport layers to format errors for
-   * transport over the wire. Thus, {@link Service#apply} will never return
-   * an ErrorResponse.
-   */
-  public class ErrorResponse extends Response {
-    private static final FieldDescriptor ERROR_MESSAGE_DESCRIPTOR = Responses.ErrorResponse
-        .getDescriptor().findFieldByNumber(
-            Responses.ErrorResponse.ERROR_MESSAGE_FIELD_NUMBER);
-    private static final FieldDescriptor SQL_DESCRIPTOR = Responses.ErrorResponse
-        .getDescriptor().findFieldByNumber(
-            Responses.ErrorResponse.SQL_STATE_FIELD_NUMBER);
-    private static final FieldDescriptor SEVERITY_DESCRIPTOR = Responses.ErrorResponse
-        .getDescriptor().findFieldByNumber(
-            Responses.ErrorResponse.SEVERITY_FIELD_NUMBER);
-    private static final FieldDescriptor METADATA_DESCRIPTOR = Responses.ErrorResponse
-        .getDescriptor().findFieldByNumber(
-            Responses.ErrorResponse.METADATA_FIELD_NUMBER);
-
-    public static final int UNKNOWN_ERROR_CODE = -1;
-    public static final int MISSING_CONNECTION_ERROR_CODE = 1;
-    public static final int UNAUTHORIZED_ERROR_CODE = 2;
-
-    public static final String UNKNOWN_SQL_STATE = "00000";
-    public static final String UNAUTHORIZED_SQL_STATE = "00002";
-
-    public final List<String> exceptions;
-    public final String errorMessage;
-    public final int errorCode;
-    public final String sqlState;
-    public final AvaticaSeverity severity;
-    public final RpcMetadataResponse rpcMetadata;
-
-    ErrorResponse() {
-      exceptions = Collections.singletonList("Unhandled exception");
-      errorMessage = "Unknown message";
-      errorCode = -1;
-      sqlState = UNKNOWN_SQL_STATE;
-      severity = AvaticaSeverity.UNKNOWN;
-      rpcMetadata = null;
-    }
-
-    @JsonCreator
-    public ErrorResponse(@JsonProperty("exceptions") List<String> exceptions,
-        @JsonProperty("errorMessage") String errorMessage,
-        @JsonProperty("errorCode") int errorCode,
-        @JsonProperty("sqlState") String sqlState,
-        @JsonProperty("severity") AvaticaSeverity severity,
-        @JsonProperty("rpcMetadata") RpcMetadataResponse rpcMetadata) {
-      this.exceptions = exceptions;
-      this.errorMessage = errorMessage;
-      this.errorCode = errorCode;
-      this.sqlState = sqlState;
-      this.severity = severity;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    protected ErrorResponse(Exception e, String errorMessage, int code, String sqlState,
-        AvaticaSeverity severity, RpcMetadataResponse rpcMetadata) {
-      this(errorMessage, code, sqlState, severity, toStackTraces(e), rpcMetadata);
-    }
-
-    protected ErrorResponse(String errorMessage, int code, String sqlState,
-        AvaticaSeverity severity, List<String> exceptions, RpcMetadataResponse rpcMetadata) {
-      this.exceptions = exceptions;
-      this.errorMessage = errorMessage;
-      this.errorCode = code;
-      this.sqlState = sqlState;
-      this.severity = severity;
-      this.rpcMetadata = rpcMetadata;
-    }
-
-    static List<String> toStackTraces(Exception e) {
-      List<String> stackTraces = new ArrayList<>();
-      stackTraces.add(toString(e));
-      if (e instanceof SQLException) {
-        SQLException next = ((SQLException) e).getNextException();
-        while (null != next) {
-          stackTraces.add(toString(next));
-          next = next.getNextException();
-        }
-      }
-      return stackTraces;
-    }
-
-    static String toString(Exception e) {
-      //noinspection ThrowableResultOfMethodCallIgnored
-      Objects.requireNonNull(e);
-      StringWriter sw = new StringWriter();
-      e.printStackTrace(new PrintWriter(sw));
-      return sw.toString();
-    }
-
-    @Override ErrorResponse deserialize(Message genericMsg) {
-      final Responses.ErrorResponse msg = ProtobufService.castProtobufMessage(genericMsg,
-          Responses.ErrorResponse.class);
-      List<String> exceptions = null;
-      if (msg.getHasExceptions()) {
-        exceptions = msg.getExceptionsList();
-      }
-
-      String errorMessage = null;
-      if (msg.hasField(ERROR_MESSAGE_DESCRIPTOR)) {
-        errorMessage = msg.getErrorMessage();
-      }
-
-      String sqlState = null;
-      if (msg.hasField(SQL_DESCRIPTOR)) {
-        sqlState = msg.getSqlState();
-      }
-
-      AvaticaSeverity severity = null;
-      if (msg.hasField(SEVERITY_DESCRIPTOR)) {
-        severity = AvaticaSeverity.fromProto(msg.getSeverity());
-      }
-
-      RpcMetadataResponse metadata = null;
-      if (msg.hasField(METADATA_DESCRIPTOR)) {
-        metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
-      }
-
-      return new ErrorResponse(exceptions, errorMessage, msg.getErrorCode(), sqlState, severity,
-          metadata);
-    }
-
-    // Public so the Jetty handler implementations can use it
-    @Override public Responses.ErrorResponse serialize() {
-      Responses.ErrorResponse.Builder builder = Responses.ErrorResponse.newBuilder();
-
-      if (null != rpcMetadata) {
-        builder.setMetadata(rpcMetadata.serialize());
-      }
-
-      if (null != exceptions) {
-        builder.setHasExceptions(true);
-        builder.addAllExceptions(exceptions);
-      } else {
-        builder.setHasExceptions(false);
-      }
-
-      if (null != errorMessage) {
-        builder.setErrorMessage(errorMessage);
-      }
-
-      if (null != sqlState) {
-        builder.setSqlState(sqlState);
-      }
-
-      if (null != severity) {
-        builder.setSeverity(severity.toProto());
-      }
-
-      return builder.setErrorCode(errorCode).build();
-    }
-
-    @Override public String toString() {
-      StringBuilder sb = new StringBuilder(32);
-      sb.append("ErrorResponse[errorCode=").append(errorCode)
-          .append(", sqlState=").append(sqlState)
-          .append(", severity=").append(severity)
-          .append(", errorMessage=").append(errorMessage)
-          .append(", exceptions=").append(exceptions);
-      return sb.toString();
-    }
-
-    @Override

<TRUNCATED>

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