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From fhueske <...@git.apache.org>
Subject [GitHub] flink pull request #5441: [FLINK-8607] [table] Add a basic embedded SQL CLI ...
Date Tue, 13 Feb 2018 18:17:15 GMT
Github user fhueske commented on a diff in the pull request:

    https://github.com/apache/flink/pull/5441#discussion_r167947410
  
    --- Diff: flink-libraries/flink-sql-client/src/main/java/org/apache/flink/table/client/gateway/DynamicResult.java
---
    @@ -0,0 +1,253 @@
    +/*
    + * 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.flink.table.client.gateway;
    +
    +import org.apache.flink.api.java.tuple.Tuple2;
    +import org.apache.flink.table.sinks.TableSink;
    +import org.apache.flink.types.Row;
    +
    +import java.net.InetAddress;
    +import java.util.ArrayList;
    +import java.util.HashMap;
    +import java.util.List;
    +import java.util.Map;
    +
    +/**
    + * A result of a dynamic table program.
    + */
    +public class DynamicResult {
    +
    +	private final boolean isChangelog;
    +	private final CollectTableSink collectTableSink;
    +	private final Object resultLock = new Object();
    +	private final ResultRetrievalThread retrievalThread;
    +	private final JobMonitoringThread monitoringThread;
    +	private Runnable program;
    +	private SqlExecutionException executionException;
    +
    +	// for table materialization
    +	private final List<Row> materializedTable;
    +	private final Map<Row, List<Integer>> rowPositions; // positions of rows
in table for faster access
    +	private final List<Row> snapshot;
    +	private int pageSize;
    +	private boolean isLastSnapshot;
    +
    +	// for changelog
    +	private Tuple2<Boolean, Row> nextChangeRecord;
    --- End diff --
    
    Also fetch change rows in a List for more efficient retrieval?


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