@Description("concatenates given strings")
@ScalarFunction
@SqlType(VarcharType.class)
public static Slice concat(
@SqlType(VarcharType.class) Slice str1, @SqlType(VarcharType.class) Slice str2) {
Slice concat = Slices.allocate(str1.length() + str2.length());
concat.setBytes(0, str1);
concat.setBytes(str1.length(), str2);
return concat;
}
public void addRecord() {
// record header
bufferSlice.setInt(
position, nextVariableLengthDataOffset); // nextVariableLengthDataOffset means record size
bufferSlice.setBytes(position + 4, nullBitSet);
count++;
this.position += nextVariableLengthDataOffset;
this.nextVariableLengthDataOffset = fixedRecordSize;
Arrays.fill(nullBitSet, (byte) -1);
// flush if next record will not fit in this buffer
if (buffer.capacity() < position + nextVariableLengthDataOffset + stringReferenceSize) {
flush();
}
}