@NotNull
private List<String> getPaths(Value<Boolean> leftValue, Value<Boolean> rightValue) {
List<String> paths = new ArrayList<>();
paths.addAll(leftValue.getPaths());
paths.addAll(rightValue.getPaths());
return paths;
}
public ValueList checkAndHandleNull(ValueList leftValues, ValueList rightValues) {
ValueList result = new ValueList();
if (leftValues.isEmpty() && rightValues.isEmpty()) {
// this solves part of the null-valued expression problem. But certainly not all.
result.addValue(Value.createNull(Lists.newArrayList()));
} else if (leftValues.isEmpty()) {
for (Value value : rightValues.getValues()) {
result.addValue(Value.createNull(value.getPaths()));
}
} else if (rightValues.isEmpty()) {
for (Value value : leftValues.getValues()) {
result.addValue(Value.createNull(value.getPaths()));
}
} else {
return null;
}
return result;
}
private ValueList evaluateBooleanConstraint(RuleEvaluation evaluation, BinaryOperator statement) {
ValueList leftValues = evaluation.evaluate(statement.getLeftOperand());
if (!(statement.getRightOperand() instanceof Constraint)) {
throw new IllegalArgumentException(
"cannot evaluate matches statement, right operand not a constraint");
}
Constraint constraint = (Constraint) statement.getRightOperand();
ValueList result = new ValueList();
result.setType(PrimitiveType.Boolean);
for (Value value : leftValues.getValues()) {
result.addValue(constraint.getItem().isValidValue(value.getValue()), value.getPaths());
}
return result;
}