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

Example 21 with DictionaryBlock

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

the class TestDictionaryBlock method testCopyRegionCreatesCompactBlock.

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

Example 22 with DictionaryBlock

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

the class TestDictionaryBlock method testCopyPositionsSamePosition.

@Test
public void testCopyPositionsSamePosition() throws Exception {
    Slice[] expectedValues = createExpectedValues(10);
    DictionaryBlock dictionaryBlock = createDictionaryBlock(expectedValues, 100);
    List<Integer> positionsToCopy = Ints.asList(52, 52, 52);
    DictionaryBlock copiedBlock = (DictionaryBlock) dictionaryBlock.copyPositions(positionsToCopy);
    assertEquals(copiedBlock.getDictionary().getPositionCount(), 1);
    assertEquals(copiedBlock.getPositionCount(), positionsToCopy.size());
    assertBlock(copiedBlock.getDictionary(), new Slice[] { expectedValues[2] });
    assertDictionaryIds(copiedBlock, 0, 0, 0);
}

Example 23 with DictionaryBlock

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

the class TestDictionaryBlock method testCopyPositionsNoCompaction.

@Test
public void testCopyPositionsNoCompaction() throws Exception {
    Slice[] expectedValues = createExpectedValues(1);
    DictionaryBlock dictionaryBlock = createDictionaryBlock(expectedValues, 100);
    List<Integer> positionsToCopy = Ints.asList(0, 2, 4, 5);
    DictionaryBlock copiedBlock = (DictionaryBlock) dictionaryBlock.copyPositions(positionsToCopy);
    assertEquals(copiedBlock.getPositionCount(), positionsToCopy.size());
    assertBlock(copiedBlock.getDictionary(), expectedValues);
}

Example 24 with DictionaryBlock

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

the class TestDictionaryBlock method createDictionaryBlockWithUnreferencedKeys.

private static DictionaryBlock createDictionaryBlockWithUnreferencedKeys(Slice[] expectedValues, int positionCount) {
    // adds references to 0 and all odd indexes
    int dictionarySize = expectedValues.length;
    int[] ids = new int[positionCount];
    for (int i = 0; i < positionCount; i++) {
        int index = i % dictionarySize;
        if (index % 2 == 0 && index != 0) {
            index--;
        }
        ids[i] = index;
    }
    return new DictionaryBlock(positionCount, new SliceArrayBlock(dictionarySize, expectedValues), ids);
}

Example 25 with DictionaryBlock

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

the class TestDictionaryBlock method testCopyPositionsWithCompaction.

@Test
public void testCopyPositionsWithCompaction() throws Exception {
    Slice[] expectedValues = createExpectedValues(10);
    Slice firstExpectedValue = expectedValues[0];
    DictionaryBlock dictionaryBlock = createDictionaryBlock(expectedValues, 100);
    List<Integer> positionsToCopy = Ints.asList(0, 10, 20, 30, 40);
    DictionaryBlock copiedBlock = (DictionaryBlock) dictionaryBlock.copyPositions(positionsToCopy);
    assertEquals(copiedBlock.getDictionary().getPositionCount(), 1);
    assertEquals(copiedBlock.getPositionCount(), positionsToCopy.size());
    assertBlock(copiedBlock.getDictionary(), new Slice[] { firstExpectedValue });
    assertBlock(copiedBlock, new Slice[] { firstExpectedValue, firstExpectedValue, firstExpectedValue, firstExpectedValue, firstExpectedValue });
}