public static boolean visit(SQLEvalVisitor visitor, SQLBinaryOpExpr x) {
SQLExpr left = x.getLeft();
SQLExpr right = x.getRight();
left.accept(visitor);
if (!left.getAttributes().containsKey(EVAL_VALUE)) {
return false;
}
right.accept(visitor);
if (!right.getAttributes().containsKey(EVAL_VALUE)) {
return false;
}
Object value = null;
switch (x.getOperator()) {
case Add:
value = add(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case Subtract:
value = sub(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case Multiply:
value = multi(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case Divide:
value = div(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case GreaterThan:
value = gt(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case GreaterThanOrEqual:
value = gteq(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case LessThan:
value = lt(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case LessThanOrEqual:
value = lteq(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case Is:
value = eq(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case IsNot:
value = !eq(left.getAttribute(EVAL_VALUE), right.getAttributes().get(EVAL_VALUE));
x.putAttribute(EVAL_VALUE, value);
break;
case RegExp:
case RLike:
{
String pattern = _string(right.getAttributes().get(EVAL_VALUE));
String input = _string(left.getAttributes().get(EVAL_VALUE));
boolean matchResult = Pattern.matches(pattern, input);
x.putAttribute(EVAL_VALUE, matchResult);
}
break;
case NotRegExp:
case NotRLike:
{
String pattern = _string(right.getAttributes().get(EVAL_VALUE));
String input = _string(left.getAttributes().get(EVAL_VALUE));
boolean matchResult = !Pattern.matches(pattern, input);
x.putAttribute(EVAL_VALUE, matchResult);
}
break;
default:
break;
}
return false;
}
