@Override
protected <U extends IValue> Result<U> joinRelation(RelationResult that) {
// Note the reverse of arguments, we need "that join this"
int arity1 = that.getValue().arity();
Type eltType = getType().getElementType();
Type tupleType = that.getType().getElementType();
Type fieldTypes[] = new Type[arity1 + 1];
for (int i = 0; i < arity1; i++) {
fieldTypes[i] = tupleType.getFieldType(i);
}
fieldTypes[arity1] = eltType;
Type resultTupleType = getTypeFactory().tupleType(fieldTypes);
ISetWriter writer = getValueFactory().setWriter(resultTupleType);
IValue fieldValues[] = new IValue[arity1 + 1];
for (IValue relValue : that.getValue()) {
for (IValue setValue : this.getValue()) {
for (int i = 0; i < arity1; i++) {
fieldValues[i] = ((ITuple) relValue).get(i);
}
fieldValues[arity1] = setValue;
writer.insert(getValueFactory().tuple(fieldValues));
}
}
Type resultType = getTypeFactory().relTypeFromTuple(resultTupleType);
return makeResult(resultType, writer.done(), ctx);
}
@Override
protected <U extends IValue> Result<U> addRelation(RelationResult that) {
return that.insertTuple(this);
}