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

Example 6 with DictionaryId

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

the class Page method compact.

public void compact() {
    if (getRetainedSizeInBytes() <= getSizeInBytes()) {
        return;
    }
    for (int i = 0; i < blocks.length; i++) {
        Block block = blocks[i];
        if (block instanceof DictionaryBlock) {
            continue;
        }
        if (block.getSizeInBytes() < block.getRetainedSizeInBytes()) {
            // Copy the block to compact its size
            Block compactedBlock = block.copyRegion(0, block.getPositionCount());
            blocks[i] = compactedBlock;
        }
    }
    Map<DictionaryId, DictionaryBlockIndexes> dictionaryBlocks = getRelatedDictionaryBlocks();
    for (DictionaryBlockIndexes blockIndexes : dictionaryBlocks.values()) {
        List<DictionaryBlock> compactBlocks = compactRelatedBlocks(blockIndexes.getBlocks());
        List<Integer> indexes = blockIndexes.getIndexes();
        for (int i = 0; i < compactBlocks.size(); i++) {
            blocks[indexes.get(i)] = compactBlocks.get(i);
        }
    }
    long retainedSize = 0;
    for (Block block : blocks) {
        retainedSize += block.getRetainedSizeInBytes();
    }
    retainedSizeInBytes.set(retainedSize);
}