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

Example 26 with InterleavedBlockBuilder

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

the class TestInterleavedBlock method createBlockBuilderWithValues.

private static InterleavedBlockBuilder createBlockBuilderWithValues(Slice[] expectedValues) {
    InterleavedBlockBuilder blockBuilder = new InterleavedBlockBuilder(TYPES, new BlockBuilderStatus(), expectedValues.length);
    int valueIndex = 0;
    while (valueIndex < expectedValues.length) {
        for (Type type : TYPES) {
            Class<?> javaType = type.getJavaType();
            Slice expectedValue = expectedValues[valueIndex];
            if (expectedValue == null) {
                blockBuilder.appendNull();
            } else if (javaType == boolean.class) {
                type.writeBoolean(blockBuilder, expectedValue.getByte(0) != 0);
            } else if (javaType == long.class) {
                type.writeLong(blockBuilder, expectedValue.getLong(0));
            } else if (javaType == double.class) {
                type.writeDouble(blockBuilder, expectedValue.getDouble(0));
            } else {
                blockBuilder.writeBytes(expectedValue, 0, expectedValue.length()).closeEntry();
            }
            valueIndex++;
        }
    }
    return blockBuilder;
}

Example 27 with InterleavedBlockBuilder

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

the class MultiKeyValuePairs method toMultimapNativeEncoding.

/**
     * Serialize as a multimap: map(key, array(value)), each key can be associated with multiple values
     */
public Block toMultimapNativeEncoding() {
    Block keys = keyBlockBuilder.build();
    Block values = valueBlockBuilder.build();
    // Merge values of the same key into an array
    BlockBuilder distinctKeyBlockBuilder = keyType.createBlockBuilder(new BlockBuilderStatus(), keys.getPositionCount(), expectedValueSize(keyType, EXPECTED_ENTRY_SIZE));
    ObjectBigArray<BlockBuilder> valueArrayBlockBuilders = new ObjectBigArray<>();
    valueArrayBlockBuilders.ensureCapacity(keys.getPositionCount());
    TypedSet keySet = new TypedSet(keyType, keys.getPositionCount());
    for (int keyValueIndex = 0; keyValueIndex < keys.getPositionCount(); keyValueIndex++) {
        if (!keySet.contains(keys, keyValueIndex)) {
            keySet.add(keys, keyValueIndex);
            keyType.appendTo(keys, keyValueIndex, distinctKeyBlockBuilder);
            BlockBuilder valueArrayBuilder = valueType.createBlockBuilder(new BlockBuilderStatus(), 10, expectedValueSize(valueType, EXPECTED_ENTRY_SIZE));
            valueArrayBlockBuilders.set(keySet.positionOf(keys, keyValueIndex), valueArrayBuilder);
        }
        valueType.appendTo(values, keyValueIndex, valueArrayBlockBuilders.get(keySet.positionOf(keys, keyValueIndex)));
    }
    // Write keys and value arrays into one Block
    Block distinctKeys = distinctKeyBlockBuilder.build();
    Type valueArrayType = new ArrayType(valueType);
    BlockBuilder multimapBlockBuilder = new InterleavedBlockBuilder(ImmutableList.of(keyType, valueArrayType), new BlockBuilderStatus(), distinctKeyBlockBuilder.getPositionCount());
    for (int i = 0; i < distinctKeys.getPositionCount(); i++) {
        keyType.appendTo(distinctKeys, i, multimapBlockBuilder);
        valueArrayType.writeObject(multimapBlockBuilder, valueArrayBlockBuilders.get(i).build());
    }
    return multimapBlockBuilder.build();
}

Example 28 with InterleavedBlockBuilder

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

the class TypedHistogram method serialize.

public Block serialize() {
    Block valuesBlock = values.build();
    BlockBuilder blockBuilder = new InterleavedBlockBuilder(ImmutableList.of(type, BIGINT), new BlockBuilderStatus(), valuesBlock.getPositionCount() * 2);
    for (int i = 0; i < valuesBlock.getPositionCount(); i++) {
        type.appendTo(valuesBlock, i, blockBuilder);
        BIGINT.writeLong(blockBuilder, counts.get(i));
    }
    return blockBuilder.build();
}