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From GitBox <...@apache.org>
Subject [GitHub] [pulsar] sijie commented on a change in pull request #4022: Making use of builtin schemas for primitive types
Date Thu, 11 Apr 2019 06:05:19 GMT
sijie commented on a change in pull request #4022: Making use of builtin schemas for primitive
URL: https://github.com/apache/pulsar/pull/4022#discussion_r274248555

 File path: pulsar-sql/presto-pulsar/src/main/java/org/apache/pulsar/sql/presto/PrimitiveSchemaHandler.java
 @@ -0,0 +1,60 @@
+ * 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,
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+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
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+ */
+package org.apache.pulsar.sql.presto;
+import io.airlift.log.Logger;
+import org.apache.pulsar.shade.io.netty.buffer.ByteBuf;
+import org.apache.pulsar.shade.io.netty.util.concurrent.FastThreadLocal;
+public abstract class PrimitiveSchemaHandler implements SchemaHandler {
 Review comment:
   I don't think you need to reimplement all the primitive schema handler. 
   the schema handler should just wrap pulsar schema. reimplementing deserialization will
cause inconsistent as time goes.
   public class PrimitiveSchemaHandler<T> implements SchemaHandler {
       private static final Logger log = Logger.get(PrimitiveSchemaHandler.class);
       private final Schema<T> schema;
       public PrimitiveSchemaHandler(Schema<T> schema) {
           this.schema = schema;
       public Object deserialize(ByteBuf payload) {
           // we need to convert a direct mem buffer into a byte[].
           byte[] data = ByteBufUtil.getBytes(payload);
           return schema.decode(data);
       public Object extractField(int index, Object currentRecord) {
           return currentRecord;

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