Examples with DictionaryBlock com.facebook.presto.common.block.DictionaryBlock used on opensource projects

Example 91 with DictionaryBlock

use of com.facebook.presto.common.block.DictionaryBlock in project presto by prestodb.

the class TestDictionaryBlock method testNonCachedLogicalBytes.

@Test
public void testNonCachedLogicalBytes() {
    int numEntries = 10;
    BlockBuilder blockBuilder = VARCHAR.createBlockBuilder(null, numEntries);
    // Over allocate dictionary indexes but only use the required limit.
    int[] dictionaryIndexes = new int[numEntries + 10];
    Arrays.fill(dictionaryIndexes, 1);
    blockBuilder.appendNull();
    dictionaryIndexes[0] = 0;
    String string = "";
    for (int i = 1; i < numEntries; i++) {
        string += "a";
        VARCHAR.writeSlice(blockBuilder, utf8Slice(string));
        dictionaryIndexes[i] = numEntries - i;
    }
    // A dictionary block of size 10, 1st element -> null, 2nd element size -> 9....9th element size -> 1
    // Pass different maxChunkSize and different offset and verify if it computes the chunk lengths correctly.
    Block elementBlock = blockBuilder.build();
    DictionaryBlock block = new DictionaryBlock(numEntries, elementBlock, dictionaryIndexes);
    int elementSize = Integer.BYTES + Byte.BYTES;
    long size = block.getRegionLogicalSizeInBytes(0, 1);
    assertEquals(size, 0 + 1 * elementSize);
    size = block.getRegionLogicalSizeInBytes(0, numEntries);
    assertEquals(size, 45 + numEntries * elementSize);
    size = block.getRegionLogicalSizeInBytes(1, 2);
    assertEquals(size, 9 + 8 + 2 * elementSize);
    size = block.getRegionLogicalSizeInBytes(9, 1);
    assertEquals(size, 1 + 1 * elementSize);
}

Example 92 with DictionaryBlock

use of com.facebook.presto.common.block.DictionaryBlock in project presto by prestodb.

the class TestDictionaryBlock method testCopyRegionCreatesCompactBlock.

@Test
public void testCopyRegionCreatesCompactBlock() {
    Slice[] expectedValues = createExpectedValues(10);
    DictionaryBlock dictionaryBlock = createDictionaryBlock(expectedValues, 100);
    DictionaryBlock copyRegionDictionaryBlock = (DictionaryBlock) dictionaryBlock.copyRegion(1, 3);
    assertTrue(copyRegionDictionaryBlock.isCompact());
}

Example 93 with DictionaryBlock

use of com.facebook.presto.common.block.DictionaryBlock in project presto by prestodb.

the class TestDictionaryBlock method testCopyPositionsNoCompaction.

@Test
public void testCopyPositionsNoCompaction() {
    Slice[] expectedValues = createExpectedValues(1);
    DictionaryBlock dictionaryBlock = createDictionaryBlock(expectedValues, 100);
    int[] positionsToCopy = new int[] { 0, 2, 4, 5 };
    DictionaryBlock copiedBlock = (DictionaryBlock) dictionaryBlock.copyPositions(positionsToCopy, 0, positionsToCopy.length);
    assertEquals(copiedBlock.getPositionCount(), positionsToCopy.length);
    assertBlock(copiedBlock.getDictionary(), TestDictionaryBlock::createBlockBuilder, expectedValues);
}

Example 94 with DictionaryBlock

use of com.facebook.presto.common.block.DictionaryBlock in project presto by prestodb.

the class TestDictionaryBlock method testCopyPositionsSamePosition.

@Test
public void testCopyPositionsSamePosition() {
    Slice[] expectedValues = createExpectedValues(10);
    DictionaryBlock dictionaryBlock = createDictionaryBlock(expectedValues, 100);
    int[] positionsToCopy = new int[] { 52, 52, 52 };
    DictionaryBlock copiedBlock = (DictionaryBlock) dictionaryBlock.copyPositions(positionsToCopy, 0, positionsToCopy.length);
    assertEquals(copiedBlock.getDictionary().getPositionCount(), 1);
    assertEquals(copiedBlock.getPositionCount(), positionsToCopy.length);
    assertBlock(copiedBlock.getDictionary(), TestDictionaryBlock::createBlockBuilder, new Slice[] { expectedValues[2] });
    assertDictionaryIds(copiedBlock, 0, 0, 0);
}

Example 95 with DictionaryBlock

use of com.facebook.presto.common.block.DictionaryBlock in project presto by prestodb.

the class TestDictionaryBlock method testCopyPositionsWithCompactionsAndReorder.

@Test
public void testCopyPositionsWithCompactionsAndReorder() {
    Slice[] expectedValues = createExpectedValues(10);
    DictionaryBlock dictionaryBlock = createDictionaryBlock(expectedValues, 100);
    int[] positionsToCopy = new int[] { 50, 55, 40, 45, 60 };
    DictionaryBlock copiedBlock = (DictionaryBlock) dictionaryBlock.copyPositions(positionsToCopy, 0, positionsToCopy.length);
    assertEquals(copiedBlock.getDictionary().getPositionCount(), 2);
    assertEquals(copiedBlock.getPositionCount(), positionsToCopy.length);
    assertBlock(copiedBlock.getDictionary(), TestDictionaryBlock::createBlockBuilder, new Slice[] { expectedValues[0], expectedValues[5] });
    assertDictionaryIds(copiedBlock, 0, 1, 0, 1, 0);
}