[GitHub] carbondata pull request #877: [CARBONDATA-951] create table ddl can specify ...

[qiuchenjian-2]

Github user chenerlu commented on a diff in the pull request:

    https://github.com/apache/carbondata/pull/877#discussion_r115918708
 
    --- Diff: core/src/main/java/org/apache/carbondata/core/datastore/chunk/store/impl/safe/SafeBitMapDimensionDataChunkStore.java ---
    @@ -0,0 +1,213 @@
    +/*
    + * 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.datastore.chunk.store.impl.safe;
    +
    +import java.util.BitSet;
    +import java.util.List;
    +
    +import org.apache.carbondata.core.scan.filter.executer.AbstractFilterExecuter.FilterOperator;
    +import org.apache.carbondata.core.util.BitSetGroup;
    +import org.apache.carbondata.core.util.ByteUtil;
    +import org.apache.carbondata.core.util.CarbonUtil;
    +
    +/**
    + * Below class will be used to store bitmap dimension data
    + */
    +public class SafeBitMapDimensionDataChunkStore extends SafeAbsractDimensionDataChunkStore {
    +
    +  /**
    +   * Size of each value
    +   */
    +  private int columnValueSize;
    +  private byte[][] bitmap_encoded_dictionaries;
    +  private int[] bitmap_data_pages_offset;
    +  private BitSetGroup bitSetGroup;
    +  private boolean isGeneratedBitSetFlg = false;
    +  private byte[] dictionaryData;
    +
    +  public SafeBitMapDimensionDataChunkStore(List<Integer> bitmap_encoded_dictionaries,
    +      List<Integer> bitmap_data_pages_length, int columnValueSize) {
    +    super(false);
    +    this.columnValueSize = columnValueSize;
    +    int arraySize = bitmap_encoded_dictionaries.size();
    +    this.bitmap_encoded_dictionaries = new byte[arraySize][];
    +    this.bitmap_data_pages_offset = new int[bitmap_data_pages_length.size()];
    +    for (int i = 0; i < arraySize; i++) {
    +      this.bitmap_encoded_dictionaries[i] = ByteUtil
    +          .convertIntToByteArray(bitmap_encoded_dictionaries.get(i), columnValueSize);
    +      this.bitmap_data_pages_offset[i] = bitmap_data_pages_length.get(i);
    +    }
    +    this.bitmap_data_pages_offset[arraySize] = bitmap_data_pages_length.get(arraySize);
    +
    +  }
    +
    +  /**
    +   * Below method will be used to put the rows and its metadata in offheap
    +   *
    +   * @param invertedIndex
    +   *          inverted index to be stored
    +   * @param invertedIndexReverse
    +   *          inverted index reverse to be stored
    +   * @param data
    +   *          data to be stored
    +   */
    +  @Override
    +  public void putArray(final int[] invertedIndex, final int[] invertedIndexReverse,
    +      final byte[] data) {
    +    this.data = data;
    +    loadDictionaryDataIndex();
    +    bitSetGroup = new BitSetGroup(bitmap_encoded_dictionaries.length);
    +
    +    // loadAllBitSets();
    +  }
    +
    +  /**
    +   * Below method will be used to get the row data
    +   *
    +   * @param rowId
    +   *          Inverted index
    +   */
    +  @Override
    +  public byte[] getRow(int rowId) {
    +    byte[] data = new byte[1];
    +    data[0] = dictionaryData[rowId];
    +    return data;
    +  }
    +
    +  /**
    +   * Below method will be used to get the surrogate key of the based on the row
    +   * id passed
    +   *
    +   * @param index
    +   *          row id
    +   * @return surrogate key
    +   */
    +  @Override
    +  public int getSurrogate(int index) {
    +    loadAllBitSets();
    +    return dictionaryData[index];
    +  }
    +
    +  /**
    +   * Below method will be used to fill the row values to buffer array
    +   *
    +   * @param rowId
    +   *          row id of the data to be filled
    +   * @param buffer
    +   *          buffer in which data will be filled
    +   * @param offset
    +   *          off the of the buffer
    +   */
    +  @Override
    +  public void fillRow(int rowId, byte[] buffer, int offset) {
    +
    +    System.arraycopy(dictionaryData[rowId], 0, buffer,
    +        offset, columnValueSize);
    +  }
    +
    +  /**
    +   * @return size of each column value
    +   */
    +  @Override
    +  public int getColumnValueSize() {
    +    return columnValueSize;
    +  }
    +
    +  /**
    +   * to compare the two byte array
    +   *
    +   * @param index
    +   *          index of first byte array
    +   * @param compareValue
    +   *          value of to be compared
    +   * @return compare result
    +   */
    +  @Override
    +  public int compareTo(int index, byte[] compareValue) {
    +    return ByteUtil.UnsafeComparer.INSTANCE.compareTo(
    +        this.bitmap_encoded_dictionaries[(int)dictionaryData[index]], 0, columnValueSize,
    +        compareValue, 0, columnValueSize);
    +  }
    +
    +  /**
    +   * apply Filter
    +   *
    +   * @param filterValues
    +   * @param operator
    +   * @return BitSet
    +   */
    +  public BitSet applyFilter(byte[][] filterValues, FilterOperator operator, int numerOfRows) {
    +    BitSet bitSet = null;
    +    for (int i = 0; i < filterValues.length; i++) {
    +      int index = CarbonUtil.binarySearch(bitmap_encoded_dictionaries, 0,
    +          bitmap_encoded_dictionaries.length - 1, filterValues[i]);
    +      if (index >= 0) {
    +        if (bitSet == null) {
    +          bitSet = loadBitSet(index);
    +        } else {
    +          bitSet.or(loadBitSet(index));
    +        }
    +      }
    +    }
    +    isGeneratedBitSetFlg = true;
    +    if (FilterOperator.NOT_IN.equals(operator)) {
    +      if (bitSet == null) {
    +        bitSet = new BitSet(numerOfRows);
    +      }
    +      // System.out.println("bitSet.size(): " + bitSet.size());
    +      // System.out.println("bitSet.length(): " + bitSet.length());
    +      bitSet.flip(0, numerOfRows);
    +      // System.out.println("bitSet2: " + bitSet.cardinality());
    +    }
    +    return bitSet;
    +  }
    +
    +  private void loadAllBitSets() {
    +    if (isGeneratedBitSetFlg) {
    +      return;
    +    }
    +    for (int i = 0; i < bitmap_encoded_dictionaries.length; i++) {
    +      bitSetGroup.setBitSet(loadBitSet(i), i);
    +    }
    +    isGeneratedBitSetFlg = true;
    +  }
    +  private BitSet loadBitSet(int index) {
    +    BitSet bitSet = this.bitSetGroup.getBitSet(index);
    +    if (bitSet != null) {
    +      return bitSet;
    +    }
    +    int pageOffSet = bitmap_data_pages_offset[index];
    +    int pageLength =  bitmap_data_pages_offset[index + 1] - bitmap_data_pages_offset[index];
    +    // System.out.println("pageLength: " + pageLength);
    +    byte[] bitSetData = new byte[pageLength];
    +    System.arraycopy(this.data, pageOffSet, bitSetData, 0, pageLength);
    +    bitSet = BitSet.valueOf(bitSetData);
    +    bitSetGroup.setBitSet(bitSet, index);
    +    return bitSet;
    +  }
    +
    +  private void loadDictionaryDataIndex() {
    +
    +    int pageOffSet = bitmap_data_pages_offset[bitmap_data_pages_offset.length - 1];
    +    int pageLength = this.data.length - pageOffSet;
    +    dictionaryData = new byte[pageLength];
    +    System.arraycopy(this.data, pageOffSet, dictionaryData, 0, pageLength);
    +    // System.out.println("dictIndex.toString(): " + dictIndex);
    +    // System.out.println("dictIndex.length(): " + dictIndex.length);
    --- End diff --
   
    Detele.


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