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/core/src/main/java/org/apache/carbondata/core/indexstore/blockletindex/BlockletDataRefNode.java

/*
 * 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.indexstore.blockletindex;

import java.io.IOException;
import java.util.List;

import org.apache.carbondata.core.constants.CarbonV3DataFormatConstants;
import org.apache.carbondata.core.constants.CarbonVersionConstants;
import org.apache.carbondata.core.datamap.dev.BlockletSerializer;
import org.apache.carbondata.core.datamap.dev.fgdatamap.FineGrainBlocklet;
import org.apache.carbondata.core.datastore.DataRefNode;
import org.apache.carbondata.core.datastore.FileReader;
import org.apache.carbondata.core.datastore.block.TableBlockInfo;
import org.apache.carbondata.core.datastore.chunk.impl.DimensionRawColumnChunk;
import org.apache.carbondata.core.datastore.chunk.impl.MeasureRawColumnChunk;
import org.apache.carbondata.core.datastore.chunk.reader.CarbonDataReaderFactory;
import org.apache.carbondata.core.datastore.chunk.reader.DimensionColumnChunkReader;
import org.apache.carbondata.core.datastore.chunk.reader.MeasureColumnChunkReader;
import org.apache.carbondata.core.indexstore.BlockletDetailInfo;
import org.apache.carbondata.core.metadata.ColumnarFormatVersion;
import org.apache.carbondata.core.metadata.blocklet.index.BlockletIndex;
import org.apache.carbondata.core.util.BitSetGroup;

/**
 * wrapper for blocklet data map data
 */
public class BlockletDataRefNode implements DataRefNode {

  private List<TableBlockInfo> blockInfos;

  private int index;

  private int[] dimensionLens;

  private BlockletSerializer blockletSerializer;

  BlockletDataRefNode(List<TableBlockInfo> blockInfos, int index, int[] dimensionLens) {
    this.blockInfos = blockInfos;
    // Update row count and page count to blocklet info
    for (TableBlockInfo blockInfo : blockInfos) {
      BlockletDetailInfo detailInfo = blockInfo.getDetailInfo();
      detailInfo.getBlockletInfo().setNumberOfRows(detailInfo.getRowCount());
      detailInfo.getBlockletInfo().setNumberOfPages(detailInfo.getPagesCount());
      detailInfo.setBlockletId(blockInfo.getDetailInfo().getBlockletId());
      int[] pageRowCount = new int[detailInfo.getPagesCount()];
      int numberOfPagesCompletelyFilled = detailInfo.getRowCount();
      // no. of rows to a page is 120000 in V2 and 32000 in V3, same is handled to get the number
      // of pages filled
      int lastPageRowCount;
      int fullyFilledRowsCount;
      if (blockInfo.getVersion() == ColumnarFormatVersion.V2
          || blockInfo.getVersion() == ColumnarFormatVersion.V1) {
        numberOfPagesCompletelyFilled /=
            CarbonVersionConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT_V2;
        lastPageRowCount = detailInfo.getRowCount()
            % CarbonVersionConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT_V2;
        fullyFilledRowsCount =
            CarbonVersionConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT_V2;
      } else {
        numberOfPagesCompletelyFilled /=
            CarbonV3DataFormatConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT;
        lastPageRowCount = detailInfo.getRowCount()
            % CarbonV3DataFormatConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT;
        fullyFilledRowsCount =
            CarbonV3DataFormatConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT;
      }
      for (int i = 0; i < numberOfPagesCompletelyFilled; i++) {
        pageRowCount[i] = fullyFilledRowsCount;
      }
      if (lastPageRowCount > 0) {
        pageRowCount[pageRowCount.length - 1] = lastPageRowCount;
      }
      // V3 old store to V3 new store compatibility. V3 new store will get this info in thrift.
      // so don't overwrite it with hardcoded values.
      if (detailInfo.getBlockletInfo().getNumberOfRowsPerPage() == null) {
        detailInfo.getBlockletInfo().setNumberOfRowsPerPage(pageRowCount);
      }
    }
    this.index = index;
    this.dimensionLens = dimensionLens;
    this.blockletSerializer = new BlockletSerializer();
  }

  @Override public DataRefNode getNextDataRefNode() {
    if (index + 1 < blockInfos.size()) {
      return new BlockletDataRefNode(blockInfos, index + 1, dimensionLens);
    }
    return null;
  }

  @Override public int numRows() {
    return blockInfos.get(index).getDetailInfo().getRowCount();
  }

  @Override public long nodeIndex() {
    return index;
  }

  @Override public short blockletIndex() {
    return blockInfos.get(index).getDetailInfo().getBlockletId();
  }

  @Override
  public byte[][] getColumnsMaxValue() {
    BlockletIndex blockletIndex =
        blockInfos.get(index).getDetailInfo().getBlockletInfo().getBlockletIndex();
    // In case of blocklet distribution this will be null
    if (null != blockletIndex) {
      return blockletIndex.getMinMaxIndex().getMaxValues();
    }
    return null;
  }

  @Override
  public byte[][] getColumnsMinValue() {
    BlockletIndex blockletIndex =
        blockInfos.get(index).getDetailInfo().getBlockletInfo().getBlockletIndex();
    // In case of blocklet distribution this will be null
    if (null != blockletIndex) {
      return blockletIndex.getMinMaxIndex().getMinValues();
    }
    return null;
  }

  @Override
  public boolean[] minMaxFlagArray() {
    BlockletIndex blockletIndex =
        blockInfos.get(index).getDetailInfo().getBlockletInfo().getBlockletIndex();
    boolean[] isMinMaxSet = null;
    if (null != blockletIndex) {
      isMinMaxSet = blockletIndex.getMinMaxIndex().getIsMinMaxSet();
    }
    return isMinMaxSet;
  }

  @Override
  public DimensionRawColumnChunk[] readDimensionChunks(FileReader fileReader, int[][] blockIndexes)
      throws IOException {
    DimensionColumnChunkReader dimensionChunksReader = getDimensionColumnChunkReader(fileReader);
    return dimensionChunksReader.readRawDimensionChunks(fileReader, blockIndexes);
  }

  @Override
  public DimensionRawColumnChunk readDimensionChunk(FileReader fileReader, int columnIndex)
      throws IOException {
    DimensionColumnChunkReader dimensionChunksReader = getDimensionColumnChunkReader(fileReader);
    return dimensionChunksReader.readRawDimensionChunk(fileReader, columnIndex);
  }

  @Override
  public MeasureRawColumnChunk[] readMeasureChunks(FileReader fileReader, int[][] columnIndexRange)
      throws IOException {
    MeasureColumnChunkReader measureColumnChunkReader = getMeasureColumnChunkReader(fileReader);
    MeasureRawColumnChunk[] measureRawColumnChunks =
        measureColumnChunkReader.readRawMeasureChunks(fileReader, columnIndexRange);
    updateMeasureRawColumnChunkMinMaxValues(measureRawColumnChunks);
    return measureRawColumnChunks;
  }

  @Override public MeasureRawColumnChunk readMeasureChunk(FileReader fileReader, int columnIndex)
      throws IOException {
    MeasureColumnChunkReader measureColumnChunkReader = getMeasureColumnChunkReader(fileReader);
    MeasureRawColumnChunk measureRawColumnChunk =
        measureColumnChunkReader.readRawMeasureChunk(fileReader, columnIndex);
    updateMeasureRawColumnChunkMinMaxValues(measureRawColumnChunk);
    return measureRawColumnChunk;
  }

  /**
   * This method is written specifically for old store wherein the measure min and max values
   * are written opposite (i.e min in place of max and amx in place of min). Due to this computing
   * f measure filter with current code is impacted. In order to sync with current min and
   * max values only in case old store and measures is reversed
   *
   * @param measureRawColumnChunk
   */
  private void updateMeasureRawColumnChunkMinMaxValues(
      MeasureRawColumnChunk measureRawColumnChunk) {
    if (blockInfos.get(index).isDataBlockFromOldStore()) {
      byte[][] maxValues = measureRawColumnChunk.getMaxValues();
      byte[][] minValues = measureRawColumnChunk.getMinValues();
      measureRawColumnChunk.setMaxValues(minValues);
      measureRawColumnChunk.setMinValues(maxValues);
    }
  }

  private void updateMeasureRawColumnChunkMinMaxValues(
      MeasureRawColumnChunk[] measureRawColumnChunks) {
    if (blockInfos.get(index).isDataBlockFromOldStore()) {
      for (int i = 0; i < measureRawColumnChunks.length; i++) {
        if (null != measureRawColumnChunks[i]) {
          updateMeasureRawColumnChunkMinMaxValues(measureRawColumnChunks[i]);
        }
      }
    }
  }

  private DimensionColumnChunkReader getDimensionColumnChunkReader(FileReader fileReader) {
    ColumnarFormatVersion version =
        ColumnarFormatVersion.valueOf(blockInfos.get(index).getDetailInfo().getVersionNumber());
    if (fileReader.isReadPageByPage()) {
      return CarbonDataReaderFactory.getInstance().getDimensionColumnChunkReader(version,
          blockInfos.get(index).getDetailInfo().getBlockletInfo(), dimensionLens,
          blockInfos.get(index).getFilePath(), true);
    } else {
      return CarbonDataReaderFactory.getInstance().getDimensionColumnChunkReader(version,
          blockInfos.get(index).getDetailInfo().getBlockletInfo(), dimensionLens,
          blockInfos.get(index).getFilePath(), false);
    }
  }

  private MeasureColumnChunkReader getMeasureColumnChunkReader(FileReader fileReader) {
    ColumnarFormatVersion version =
        ColumnarFormatVersion.valueOf(blockInfos.get(index).getDetailInfo().getVersionNumber());
    if (fileReader.isReadPageByPage()) {
      return CarbonDataReaderFactory.getInstance().getMeasureColumnChunkReader(version,
          blockInfos.get(index).getDetailInfo().getBlockletInfo(),
          blockInfos.get(index).getFilePath(), true);
    } else {
      return CarbonDataReaderFactory.getInstance().getMeasureColumnChunkReader(version,
          blockInfos.get(index).getDetailInfo().getBlockletInfo(),
          blockInfos.get(index).getFilePath(), false);
    }
  }

  @Override
  public int numberOfPages() {
    return blockInfos.get(index).getDetailInfo().getPagesCount();
  }

  @Override
  public BitSetGroup getIndexedData() {
    String dataMapWriterPath = blockInfos.get(index).getDataMapWriterPath();
    if (dataMapWriterPath != null) {
      try {
        FineGrainBlocklet blocklet = blockletSerializer.deserializeBlocklet(dataMapWriterPath);
        return blocklet.getBitSetGroup(numberOfPages());
      } catch (IOException e) {
        return null;
      }
    } else {
      return null;
    }
  }

  @Override
  public int getPageRowCount(int pageNumber) {
    return blockInfos.get(index).getDetailInfo().getBlockletInfo()
        .getNumberOfRowsPerPage()[pageNumber];
  }

  public int numberOfNodes() {
    return blockInfos.size();
  }

  public List<TableBlockInfo> getBlockInfos() {
    return blockInfos;
  }
}

1	/*
2	* Licensed to the Apache Software Foundation (ASF) under one or more
3	* contributor license agreements. See the NOTICE file distributed with
4	* this work for additional information regarding copyright ownership.
5	* The ASF licenses this file to You under the Apache License, Version 2.0
6	* (the "License"); you may not use this file except in compliance with
7	* the License. You may obtain a copy of the License at
8	*
9	* http://www.apache.org/licenses/LICENSE-2.0
10	*
11	* Unless required by applicable law or agreed to in writing, software
12	* distributed under the License is distributed on an "AS IS" BASIS,
13	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14	* See the License for the specific language governing permissions and
15	* limitations under the License.
16	*/
17	package org.apache.carbondata.core.indexstore.blockletindex;
18
19	import java.io.IOException;
20	import java.util.List;
21
22	import org.apache.carbondata.core.constants.CarbonV3DataFormatConstants;
23	import org.apache.carbondata.core.constants.CarbonVersionConstants;
24	import org.apache.carbondata.core.datamap.dev.BlockletSerializer;
25	import org.apache.carbondata.core.datamap.dev.fgdatamap.FineGrainBlocklet;
26	import org.apache.carbondata.core.datastore.DataRefNode;
27	import org.apache.carbondata.core.datastore.FileReader;
28	import org.apache.carbondata.core.datastore.block.TableBlockInfo;
29	import org.apache.carbondata.core.datastore.chunk.impl.DimensionRawColumnChunk;
30	import org.apache.carbondata.core.datastore.chunk.impl.MeasureRawColumnChunk;
31	import org.apache.carbondata.core.datastore.chunk.reader.CarbonDataReaderFactory;
32	import org.apache.carbondata.core.datastore.chunk.reader.DimensionColumnChunkReader;
33	import org.apache.carbondata.core.datastore.chunk.reader.MeasureColumnChunkReader;
34	import org.apache.carbondata.core.indexstore.BlockletDetailInfo;
35	import org.apache.carbondata.core.metadata.ColumnarFormatVersion;
36	import org.apache.carbondata.core.metadata.blocklet.index.BlockletIndex;
37	import org.apache.carbondata.core.util.BitSetGroup;
38
39	/**
40	* wrapper for blocklet data map data
41	*/
42	public class BlockletDataRefNode implements DataRefNode {
43
44	private List<TableBlockInfo> blockInfos;
45
46	private int index;
47
48	private int[] dimensionLens;
49
50	private BlockletSerializer blockletSerializer;
51
52	BlockletDataRefNode(List<TableBlockInfo> blockInfos, int index, int[] dimensionLens) {	1✔
53	this.blockInfos = blockInfos;	1✔
54	// Update row count and page count to blocklet info
55	for (TableBlockInfo blockInfo : blockInfos) {	1✔
56	BlockletDetailInfo detailInfo = blockInfo.getDetailInfo();	1✔
57	detailInfo.getBlockletInfo().setNumberOfRows(detailInfo.getRowCount());	1✔
58	detailInfo.getBlockletInfo().setNumberOfPages(detailInfo.getPagesCount());	1✔
59	detailInfo.setBlockletId(blockInfo.getDetailInfo().getBlockletId());	1✔
60	int[] pageRowCount = new int[detailInfo.getPagesCount()];	1✔
61	int numberOfPagesCompletelyFilled = detailInfo.getRowCount();	1✔
62	// no. of rows to a page is 120000 in V2 and 32000 in V3, same is handled to get the number
63	// of pages filled
64	int lastPageRowCount;
65	int fullyFilledRowsCount;
66	if (blockInfo.getVersion() == ColumnarFormatVersion.V2	1✔
67	\|\| blockInfo.getVersion() == ColumnarFormatVersion.V1) {	1✔
68	numberOfPagesCompletelyFilled /=	×
69	CarbonVersionConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT_V2;
70	lastPageRowCount = detailInfo.getRowCount()	×
71	% CarbonVersionConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT_V2;
72	fullyFilledRowsCount =	×
73	CarbonVersionConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT_V2;
74	} else {
75	numberOfPagesCompletelyFilled /=	1✔
76	CarbonV3DataFormatConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT;
77	lastPageRowCount = detailInfo.getRowCount()	1✔
78	% CarbonV3DataFormatConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT;
79	fullyFilledRowsCount =	1✔
80	CarbonV3DataFormatConstants.NUMBER_OF_ROWS_PER_BLOCKLET_COLUMN_PAGE_DEFAULT;
81	}
82	for (int i = 0; i < numberOfPagesCompletelyFilled; i++) {	1✔
83	pageRowCount[i] = fullyFilledRowsCount;	1✔
84	}
85	if (lastPageRowCount > 0) {	1✔
86	pageRowCount[pageRowCount.length - 1] = lastPageRowCount;	1✔
87	}
88	// V3 old store to V3 new store compatibility. V3 new store will get this info in thrift.
89	// so don't overwrite it with hardcoded values.
90	if (detailInfo.getBlockletInfo().getNumberOfRowsPerPage() == null) {	1✔
91	detailInfo.getBlockletInfo().setNumberOfRowsPerPage(pageRowCount);	×
92	}
93	}	1✔
94	this.index = index;	1✔
95	this.dimensionLens = dimensionLens;	1✔
96	this.blockletSerializer = new BlockletSerializer();	1✔
97	}	1✔
98
99	@Override public DataRefNode getNextDataRefNode() {
100	if (index + 1 < blockInfos.size()) {	1✔
101	return new BlockletDataRefNode(blockInfos, index + 1, dimensionLens);	1✔
102	}
103	return null;	1✔
104	}
105
106	@Override public int numRows() {
107	return blockInfos.get(index).getDetailInfo().getRowCount();	1✔
108	}
109
110	@Override public long nodeIndex() {
111	return index;	×
112	}
113
114	@Override public short blockletIndex() {
115	return blockInfos.get(index).getDetailInfo().getBlockletId();	1✔
116	}
117
118	@Override
119	public byte[][] getColumnsMaxValue() {
120	BlockletIndex blockletIndex =	1✔
121	blockInfos.get(index).getDetailInfo().getBlockletInfo().getBlockletIndex();	1✔
122	// In case of blocklet distribution this will be null
123	if (null != blockletIndex) {	1✔
124	return blockletIndex.getMinMaxIndex().getMaxValues();	1✔
125	}
126	return null;	1✔
127	}
128
129	@Override
130	public byte[][] getColumnsMinValue() {
131	BlockletIndex blockletIndex =	1✔
132	blockInfos.get(index).getDetailInfo().getBlockletInfo().getBlockletIndex();	1✔
133	// In case of blocklet distribution this will be null
134	if (null != blockletIndex) {	1✔
135	return blockletIndex.getMinMaxIndex().getMinValues();	1✔
136	}
137	return null;	×
138	}
139
140	@Override
141	public boolean[] minMaxFlagArray() {
142	BlockletIndex blockletIndex =	1✔
143	blockInfos.get(index).getDetailInfo().getBlockletInfo().getBlockletIndex();	1✔
144	boolean[] isMinMaxSet = null;	1✔
145	if (null != blockletIndex) {	1✔
146	isMinMaxSet = blockletIndex.getMinMaxIndex().getIsMinMaxSet();	1✔
147	}
148	return isMinMaxSet;	1✔
149	}
150
151	@Override
152	public DimensionRawColumnChunk[] readDimensionChunks(FileReader fileReader, int[][] blockIndexes)
153	throws IOException {
154	DimensionColumnChunkReader dimensionChunksReader = getDimensionColumnChunkReader(fileReader);	1✔
155	return dimensionChunksReader.readRawDimensionChunks(fileReader, blockIndexes);	1✔
156	}
157
158	@Override
159	public DimensionRawColumnChunk readDimensionChunk(FileReader fileReader, int columnIndex)
160	throws IOException {
161	DimensionColumnChunkReader dimensionChunksReader = getDimensionColumnChunkReader(fileReader);	1✔
162	return dimensionChunksReader.readRawDimensionChunk(fileReader, columnIndex);	1✔
163	}
164
165	@Override
166	public MeasureRawColumnChunk[] readMeasureChunks(FileReader fileReader, int[][] columnIndexRange)
167	throws IOException {
168	MeasureColumnChunkReader measureColumnChunkReader = getMeasureColumnChunkReader(fileReader);	1✔
169	MeasureRawColumnChunk[] measureRawColumnChunks =	1✔
170	measureColumnChunkReader.readRawMeasureChunks(fileReader, columnIndexRange);	1✔
171	updateMeasureRawColumnChunkMinMaxValues(measureRawColumnChunks);	1✔
172	return measureRawColumnChunks;	1✔
173	}
174
175	@Override public MeasureRawColumnChunk readMeasureChunk(FileReader fileReader, int columnIndex)
176	throws IOException {
177	MeasureColumnChunkReader measureColumnChunkReader = getMeasureColumnChunkReader(fileReader);	1✔
178	MeasureRawColumnChunk measureRawColumnChunk =	1✔
179	measureColumnChunkReader.readRawMeasureChunk(fileReader, columnIndex);	1✔
180	updateMeasureRawColumnChunkMinMaxValues(measureRawColumnChunk);	1✔
181	return measureRawColumnChunk;	1✔
182	}
183
184	/**
185	* This method is written specifically for old store wherein the measure min and max values
186	* are written opposite (i.e min in place of max and amx in place of min). Due to this computing
187	* f measure filter with current code is impacted. In order to sync with current min and
188	* max values only in case old store and measures is reversed
189	*
190	* @param measureRawColumnChunk
191	*/
192	private void updateMeasureRawColumnChunkMinMaxValues(
193	MeasureRawColumnChunk measureRawColumnChunk) {
194	if (blockInfos.get(index).isDataBlockFromOldStore()) {	1✔
195	byte[][] maxValues = measureRawColumnChunk.getMaxValues();	×
196	byte[][] minValues = measureRawColumnChunk.getMinValues();	×
197	measureRawColumnChunk.setMaxValues(minValues);	×
198	measureRawColumnChunk.setMinValues(maxValues);	×
199	}
200	}	1✔
201
202	private void updateMeasureRawColumnChunkMinMaxValues(
203	MeasureRawColumnChunk[] measureRawColumnChunks) {
204	if (blockInfos.get(index).isDataBlockFromOldStore()) {	1✔
205	for (int i = 0; i < measureRawColumnChunks.length; i++) {	×
206	if (null != measureRawColumnChunks[i]) {	×
207	updateMeasureRawColumnChunkMinMaxValues(measureRawColumnChunks[i]);	×
208	}
209	}
210	}
211	}	1✔
212
213	private DimensionColumnChunkReader getDimensionColumnChunkReader(FileReader fileReader) {
214	ColumnarFormatVersion version =	1✔
215	ColumnarFormatVersion.valueOf(blockInfos.get(index).getDetailInfo().getVersionNumber());	1✔
216	if (fileReader.isReadPageByPage()) {	1✔
217	return CarbonDataReaderFactory.getInstance().getDimensionColumnChunkReader(version,	1✔
218	blockInfos.get(index).getDetailInfo().getBlockletInfo(), dimensionLens,	1✔
219	blockInfos.get(index).getFilePath(), true);	1✔
220	} else {
221	return CarbonDataReaderFactory.getInstance().getDimensionColumnChunkReader(version,	1✔
222	blockInfos.get(index).getDetailInfo().getBlockletInfo(), dimensionLens,	1✔
223	blockInfos.get(index).getFilePath(), false);	1✔
224	}
225	}
226
227	private MeasureColumnChunkReader getMeasureColumnChunkReader(FileReader fileReader) {
228	ColumnarFormatVersion version =	1✔
229	ColumnarFormatVersion.valueOf(blockInfos.get(index).getDetailInfo().getVersionNumber());	1✔
230	if (fileReader.isReadPageByPage()) {	1✔
231	return CarbonDataReaderFactory.getInstance().getMeasureColumnChunkReader(version,	1✔
232	blockInfos.get(index).getDetailInfo().getBlockletInfo(),	1✔
233	blockInfos.get(index).getFilePath(), true);	1✔
234	} else {
235	return CarbonDataReaderFactory.getInstance().getMeasureColumnChunkReader(version,	1✔
236	blockInfos.get(index).getDetailInfo().getBlockletInfo(),	1✔
237	blockInfos.get(index).getFilePath(), false);	1✔
238	}
239	}
240
241	@Override
242	public int numberOfPages() {
243	return blockInfos.get(index).getDetailInfo().getPagesCount();	1✔
244	}
245
246	@Override
247	public BitSetGroup getIndexedData() {
248	String dataMapWriterPath = blockInfos.get(index).getDataMapWriterPath();	1✔
249	if (dataMapWriterPath != null) {	1✔
250	try {
251	FineGrainBlocklet blocklet = blockletSerializer.deserializeBlocklet(dataMapWriterPath);	1✔
252	return blocklet.getBitSetGroup(numberOfPages());	1✔
253	} catch (IOException e) {	×
254	return null;	×
255	}
256	} else {
257	return null;	1✔
258	}
259	}
260
261	@Override
262	public int getPageRowCount(int pageNumber) {
263	return blockInfos.get(index).getDetailInfo().getBlockletInfo()	1✔
264	.getNumberOfRowsPerPage()[pageNumber];	1✔
265	}
266
267	public int numberOfNodes() {
268	return blockInfos.size();	1✔
269	}
270
271	public List<TableBlockInfo> getBlockInfos() {
272	return blockInfos;	1✔
273	}
274	}

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