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From jackylk <...@git.apache.org>
Subject [GitHub] carbondata pull request #1238: [CARBONDATA-1363] Add DataMapWriter interface
Date Tue, 08 Aug 2017 00:59:47 GMT
Github user jackylk commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/1238#discussion_r131799961
  
    --- Diff: core/src/main/java/org/apache/carbondata/core/datamap/dev/DataMapWriter.java
---
    @@ -0,0 +1,58 @@
    +/*
    + * 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.carbondata.core.datamap.dev;
    +
    +import org.apache.carbondata.core.datamap.DataMapMeta;
    +import org.apache.carbondata.core.datastore.page.ColumnPage;
    +
    +/**
    + * Data Map writer
    + */
    +public interface DataMapWriter {
    +
    +  /**
    +   *  Start of new block notification.
    +   *  @param blockId file name of the carbondata file
    +   */
    +  void onBlockStart(String blockId);
    +
    +  /**
    +   * End of block notification
    +   */
    +  void onBlockEnd(String blockId);
    +
    +  /**
    +   * Start of new blocklet notification.
    +   * @param blockletId sequence number of blocklet in the block
    +   */
    +  void onBlockletStart(int blockletId);
    +
    +  /**
    +   * End of blocklet notification
    +   * @param blockletId sequence number of blocklet in the block
    +   */
    +  void onBlockletEnd(int blockletId);
    +
    +  /**
    +   * Add the column page row to the datamap
    +   * The order of pageId is not guranteed
    +   */
    +  void add(int blockletId, int pageId, ColumnPage page);
    +
    +  DataMapMeta getMeta();
    --- End diff --
    
    You are right, will change it


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