@Override
public Block readBlock(SliceInput sliceInput) {
int positionCount = sliceInput.readInt();
boolean[] valueIsNull = decodeNullBits(sliceInput, positionCount);
long[] values = new long[positionCount];
for (int position = 0; position < positionCount; position++) {
if (!valueIsNull[position]) {
values[position] = sliceInput.readLong();
}
}
return new LongArrayBlock(positionCount, valueIsNull, values);
}
@Override
public void deserialize(Block block, int index, MaxOrMinByState state) {
SliceInput input = block.getSlice(index, 0, block.getLength(index)).getInput();
int keyLength = input.readInt();
int valueLength = input.readInt();
state.setKey(null);
state.setValue(null);
if (keyLength > 0) {
state.setKey(toBlock(keyType, input, keyLength));
}
if (valueLength > 0) {
state.setValue(toBlock(valueType, input, valueLength));
}
}
private static Block toBlock(Type type, SliceInput input, int length) {
BlockBuilder builder = type.createBlockBuilder(new BlockBuilderStatus(), 1, length);
if (type.getJavaType() == long.class) {
type.writeLong(builder, input.readLong());
} else if (type.getJavaType() == double.class) {
type.writeDouble(builder, input.readDouble());
} else if (type.getJavaType() == Slice.class) {
type.writeSlice(builder, input.readSlice(length));
} else if (type.getJavaType() == boolean.class) {
type.writeBoolean(builder, input.readByte() != 0);
} else {
throw new IllegalArgumentException("Unsupported type: " + type.getJavaType().getSimpleName());
}
return builder.build();
}