Examples with FixedLengthDimensionDataChunk org.apache.carbondata.core.datastore.chunk.impl.FixedLengthDimensionDataChunk used on opensource projects

Example 1 with FixedLengthDimensionDataChunk

use of org.apache.carbondata.core.datastore.chunk.impl.FixedLengthDimensionDataChunk in project carbondata by apache.

the class CompressedDimensionChunkFileBasedReaderV3 method convertToDimensionChunk.

/**
   * Below method will be used to convert the compressed dimension chunk raw data to actual data
   *
   * @param dimensionRawColumnChunk dimension raw chunk
   * @param pageNumber              number
   * @return DimensionColumnDataChunk
   */
@Override
public DimensionColumnDataChunk convertToDimensionChunk(DimensionRawColumnChunk dimensionRawColumnChunk, int pageNumber) throws IOException {
    byte[] dataPage = null;
    int[] invertedIndexes = null;
    int[] invertedIndexesReverse = null;
    int[] rlePage = null;
    // data chunk of page
    DataChunk2 dimensionColumnChunk = null;
    // data chunk of blocklet column
    DataChunk3 dataChunk3 = dimensionRawColumnChunk.getDataChunkV3();
    // get the data buffer
    ByteBuffer rawData = dimensionRawColumnChunk.getRawData();
    dimensionColumnChunk = dataChunk3.getData_chunk_list().get(pageNumber);
    // calculating the start point of data
    // as buffer can contain multiple column data, start point will be datachunkoffset +
    // data chunk length + page offset
    int copySourcePoint = dimensionRawColumnChunk.getOffSet() + dimensionChunksLength.get(dimensionRawColumnChunk.getBlockletId()) + dataChunk3.getPage_offset().get(pageNumber);
    // first read the data and uncompressed it
    dataPage = COMPRESSOR.unCompressByte(rawData.array(), copySourcePoint, dimensionColumnChunk.data_page_length);
    copySourcePoint += dimensionColumnChunk.data_page_length;
    // if row id block is present then read the row id chunk and uncompress it
    if (hasEncoding(dimensionColumnChunk.encoders, Encoding.INVERTED_INDEX)) {
        invertedIndexes = CarbonUtil.getUnCompressColumnIndex(dimensionColumnChunk.rowid_page_length, rawData, copySourcePoint);
        copySourcePoint += dimensionColumnChunk.rowid_page_length;
        // get the reverse index
        invertedIndexesReverse = getInvertedReverseIndex(invertedIndexes);
    }
    //then actual data based on rle block
    if (hasEncoding(dimensionColumnChunk.encoders, Encoding.RLE)) {
        rlePage = CarbonUtil.getIntArray(rawData, copySourcePoint, dimensionColumnChunk.rle_page_length);
        // uncompress the data with rle indexes
        dataPage = UnBlockIndexer.uncompressData(dataPage, rlePage, eachColumnValueSize[dimensionRawColumnChunk.getBlockletId()]);
        rlePage = null;
    }
    // fill chunk attributes
    DimensionColumnDataChunk columnDataChunk = null;
    if (dimensionColumnChunk.isRowMajor()) {
        // to store fixed length column chunk values
        columnDataChunk = new ColumnGroupDimensionDataChunk(dataPage, eachColumnValueSize[dimensionRawColumnChunk.getBlockletId()], dimensionRawColumnChunk.getRowCount()[pageNumber]);
    } else // and set to data chunk instance
    if (!hasEncoding(dimensionColumnChunk.encoders, Encoding.DICTIONARY)) {
        columnDataChunk = new VariableLengthDimensionDataChunk(dataPage, invertedIndexes, invertedIndexesReverse, dimensionRawColumnChunk.getRowCount()[pageNumber]);
    } else {
        // to store fixed length column chunk values
        columnDataChunk = new FixedLengthDimensionDataChunk(dataPage, invertedIndexes, invertedIndexesReverse, dimensionRawColumnChunk.getRowCount()[pageNumber], eachColumnValueSize[dimensionRawColumnChunk.getBlockletId()]);
    }
    return columnDataChunk;
}

Example 2 with FixedLengthDimensionDataChunk

use of org.apache.carbondata.core.datastore.chunk.impl.FixedLengthDimensionDataChunk in project carbondata by apache.

the class CarbonUtilTest method testToGetNextLesserValueToTarget.

@Test
public void testToGetNextLesserValueToTarget() {
    byte[] dataChunks = { 7, 7, 7, 8, 9 };
    byte[] compareValues = { 7 };
    FixedLengthDimensionDataChunk fixedLengthDataChunk = new FixedLengthDimensionDataChunk(dataChunks, null, null, 5, 1);
    int result = CarbonUtil.nextLesserValueToTarget(2, fixedLengthDataChunk, compareValues);
    assertEquals(result, -1);
}

Example 3 with FixedLengthDimensionDataChunk

use of org.apache.carbondata.core.datastore.chunk.impl.FixedLengthDimensionDataChunk in project carbondata by apache.

the class CarbonUtilTest method testToGetNextLesserValue.

@Test
public void testToGetNextLesserValue() {
    byte[] dataChunks = { 5, 6, 7, 8, 9 };
    byte[] compareValues = { 7 };
    FixedLengthDimensionDataChunk fixedLengthDataChunk = new FixedLengthDimensionDataChunk(dataChunks, null, null, 5, 1);
    int result = CarbonUtil.nextLesserValueToTarget(2, fixedLengthDataChunk, compareValues);
    assertEquals(result, 1);
}

Example 4 with FixedLengthDimensionDataChunk

use of org.apache.carbondata.core.datastore.chunk.impl.FixedLengthDimensionDataChunk in project carbondata by apache.

the class CarbonUtilTest method testToGetFirstIndexUsingBinarySearchWithCompareToLessThan0.

@Test
public void testToGetFirstIndexUsingBinarySearchWithCompareToLessThan0() {
    byte[] dataChunks = { 10, 20, 30, 40, 50, 60 };
    byte[] compareValue = { 30 };
    FixedLengthDimensionDataChunk fixedLengthDimensionDataChunk = new FixedLengthDimensionDataChunk(dataChunks, null, null, 6, 1);
    int result = CarbonUtil.getFirstIndexUsingBinarySearch(fixedLengthDimensionDataChunk, 1, 3, compareValue, false);
    assertEquals(2, result);
}

Example 5 with FixedLengthDimensionDataChunk

use of org.apache.carbondata.core.datastore.chunk.impl.FixedLengthDimensionDataChunk in project carbondata by apache.

the class CarbonUtilTest method testToGetFirstIndexUsingBinarySearchWithMatchUpLimitTrue.

@Test
public void testToGetFirstIndexUsingBinarySearchWithMatchUpLimitTrue() {
    byte[] dataChunks = { 10, 10, 10, 40, 50, 60 };
    byte[] compareValue = { 10 };
    FixedLengthDimensionDataChunk fixedLengthDimensionDataChunk = new FixedLengthDimensionDataChunk(dataChunks, null, null, 6, 1);
    int result = CarbonUtil.getFirstIndexUsingBinarySearch(fixedLengthDimensionDataChunk, 1, 3, compareValue, true);
    assertEquals(2, result);
}