Examples with ArrayBlock io.prestosql.spi.block.ArrayBlock used on opensource projects

Example 1 with ArrayBlock

use of io.prestosql.spi.block.ArrayBlock in project carbondata by apache.

the class ComplexTypeStreamReader method putComplexObject.

public void putComplexObject(List<Integer> offsetVector) {
    if (type instanceof ArrayType) {
        // build child block
        Block childBlock = buildChildBlock(getChildrenVector().get(0));
        // prepare an offset vector with 0 as initial offset
        int[] offsetVectorArray = new int[offsetVector.size() + 1];
        for (int i = 1; i <= offsetVector.size(); i++) {
            offsetVectorArray[i] = offsetVectorArray[i - 1] + offsetVector.get(i - 1);
        }
        // prepare Array block
        Block arrayBlock = ArrayBlock.fromElementBlock(offsetVector.size(), Optional.empty(), offsetVectorArray, childBlock);
        for (int position = 0; position < offsetVector.size(); position++) {
            type.writeObject(builder, arrayBlock.getObject(position, Block.class));
        }
        getChildrenVector().get(0).getColumnVector().reset();
    } else {
        // build child blocks
        List<Block> childBlocks = new ArrayList<>(getChildrenVector().size());
        for (CarbonColumnVector child : getChildrenVector()) {
            childBlocks.add(buildChildBlock(child));
        }
        // prepare ROW block
        Block rowBlock = RowBlock.fromFieldBlocks(offsetVector.size(), Optional.empty(), childBlocks.toArray(new Block[0]));
        for (int position = 0; position < offsetVector.size(); position++) {
            type.writeObject(builder, rowBlock.getObject(position, Block.class));
        }
        for (CarbonColumnVector child : getChildrenVector()) {
            child.getColumnVector().reset();
        }
    }
}