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

Example 71 with BlockBuilder

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

the class ArrayConcatFunction method concat.

@UsedByGeneratedCode
public static Block concat(Type elementType, Object state, Block[] blocks) {
    int resultPositionCount = 0;
    // fast path when there is at most one non empty block
    Block nonEmptyBlock = null;
    for (int i = 0; i < blocks.length; i++) {
        resultPositionCount += blocks[i].getPositionCount();
        if (blocks[i].getPositionCount() > 0) {
            nonEmptyBlock = blocks[i];
        }
    }
    if (nonEmptyBlock == null) {
        return blocks[0];
    }
    if (resultPositionCount == nonEmptyBlock.getPositionCount()) {
        return nonEmptyBlock;
    }
    PageBuilder pageBuilder = (PageBuilder) state;
    if (pageBuilder.isFull()) {
        pageBuilder.reset();
    }
    BlockBuilder blockBuilder = pageBuilder.getBlockBuilder(0);
    for (int blockIndex = 0; blockIndex < blocks.length; blockIndex++) {
        Block block = blocks[blockIndex];
        for (int i = 0; i < block.getPositionCount(); i++) {
            elementType.appendTo(block, i, blockBuilder);
        }
    }
    pageBuilder.declarePositions(resultPositionCount);
    return blockBuilder.getRegion(blockBuilder.getPositionCount() - resultPositionCount, resultPositionCount);
}

Example 72 with BlockBuilder

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

the class ArrayConcatUtils method appendElement.

@UsedByGeneratedCode
public static Block appendElement(Type elementType, Block block, boolean value) {
    BlockBuilder blockBuilder = elementType.createBlockBuilder(new BlockBuilderStatus(), block.getPositionCount() + 1);
    for (int i = 0; i < block.getPositionCount(); i++) {
        elementType.appendTo(block, i, blockBuilder);
    }
    elementType.writeBoolean(blockBuilder, value);
    return blockBuilder.build();
}

Example 73 with BlockBuilder

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

the class JsonToArrayCast method toArray.

@UsedByGeneratedCode
public static Block toArray(Type arrayType, ConnectorSession connectorSession, Slice json) {
    try {
        List<?> array = (List<?>) stackRepresentationToObject(connectorSession, json, arrayType);
        if (array == null) {
            return null;
        }
        Type elementType = ((ArrayType) arrayType).getElementType();
        BlockBuilder blockBuilder = elementType.createBlockBuilder(new BlockBuilderStatus(), array.size());
        for (Object element : array) {
            appendToBlockBuilder(elementType, element, blockBuilder);
        }
        return blockBuilder.build();
    } catch (RuntimeException e) {
        throw new PrestoException(INVALID_CAST_ARGUMENT, "Value cannot be cast to " + arrayType, e);
    }
}

Example 74 with BlockBuilder

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

the class ArrayConcatUtils method appendElement.

@UsedByGeneratedCode
public static Block appendElement(Type elementType, Block block, long value) {
    BlockBuilder blockBuilder = elementType.createBlockBuilder(new BlockBuilderStatus(), block.getPositionCount() + 1);
    for (int i = 0; i < block.getPositionCount(); i++) {
        elementType.appendTo(block, i, blockBuilder);
    }
    elementType.writeLong(blockBuilder, value);
    return blockBuilder.build();
}

Example 75 with BlockBuilder

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

the class ArrayConstructor method generateArrayConstructor.

private static Class<?> generateArrayConstructor(List<Class<?>> stackTypes, Type elementType) {
    List<String> stackTypeNames = stackTypes.stream().map(Class::getSimpleName).collect(toImmutableList());
    ClassDefinition definition = new ClassDefinition(a(PUBLIC, FINAL), CompilerUtils.makeClassName(Joiner.on("").join(stackTypeNames) + "ArrayConstructor"), type(Object.class));
    // Generate constructor
    definition.declareDefaultConstructor(a(PRIVATE));
    // Generate arrayConstructor()
    ImmutableList.Builder<Parameter> parameters = ImmutableList.builder();
    for (int i = 0; i < stackTypes.size(); i++) {
        Class<?> stackType = stackTypes.get(i);
        parameters.add(arg("arg" + i, stackType));
    }
    MethodDefinition method = definition.declareMethod(a(PUBLIC, STATIC), "arrayConstructor", type(Block.class), parameters.build());
    Scope scope = method.getScope();
    BytecodeBlock body = method.getBody();
    Variable blockBuilderVariable = scope.declareVariable(BlockBuilder.class, "blockBuilder");
    CallSiteBinder binder = new CallSiteBinder();
    BytecodeExpression createBlockBuilder = blockBuilderVariable.set(constantType(binder, elementType).invoke("createBlockBuilder", BlockBuilder.class, newInstance(BlockBuilderStatus.class), constantInt(stackTypes.size())));
    body.append(createBlockBuilder);
    for (int i = 0; i < stackTypes.size(); i++) {
        if (elementType.getJavaType() == void.class) {
            body.append(blockBuilderVariable.invoke("appendNull", BlockBuilder.class));
        } else {
            Variable argument = scope.getVariable("arg" + i);
            IfStatement ifStatement = new IfStatement().condition(equal(argument, constantNull(stackTypes.get(i)))).ifTrue(blockBuilderVariable.invoke("appendNull", BlockBuilder.class).pop()).ifFalse(constantType(binder, elementType).writeValue(blockBuilderVariable, argument.cast(elementType.getJavaType())));
            body.append(ifStatement);
        }
    }
    body.append(blockBuilderVariable.invoke("build", Block.class).ret());
    return defineClass(definition, Object.class, binder.getBindings(), new DynamicClassLoader(ArrayConstructor.class.getClassLoader()));
}