public int writeValues(byte[] output, Object[] values, int srcOffset) {
int offset = srcOffset;
// check if all values can be delta-ed or not
boolean isDelta;
if (deltaEnabled && rowDelta) {
isDelta = isRowDelta(values);
BitCodec.write(output, isDelta ? 1 : 0, offset++, 1);
}
for (int i = 0; i < writers.length; i++) {
Writer writer = writers[i];
Object value = values[i];
if (deltaEnabled && !rowDelta && !writer.fixed) {
isDelta = writer.isDelta(value);
BitCodec.write(output, isDelta ? 1 : 0, offset++, 1);
} else {
isDelta = false;
}
offset +=
isDelta
? writer.writeDelta(output, value, offset)
: writer.writeRaw(output, value, offset);
}
return offset - srcOffset;
}
protected boolean isRowDelta(Object[] values) {
for (int i = 0; i < writers.length; i++) {
Writer writer = writers[i];
Object value = values[i];
if (!writer.fixed && !writer.isDelta(value)) {
return false;
}
}
return true;
}