override def apply()

in modules/spark-ext/spark/src/main/scala/org/apache/ignite/spark/impl/optimization/SystemExpressions.scala [28:70]

• 32 lines of code
• 26 McCabe index (conditional complexity)

    override def apply(expr: Expression, checkChild: Expression ⇒ Boolean): Boolean = expr match {
        case Coalesce(children) ⇒
            children.forall(checkChild)

        case Greatest(children) ⇒
            children.forall(checkChild)

        case IfNull(left, right, _) ⇒
            checkChild(left) && checkChild(right)

        case Least(children) ⇒
            children.forall(checkChild)

        case NullIf(left, right, _) ⇒
            checkChild(left) && checkChild(right)

        case Nvl2(expr1, expr2, expr3, _) ⇒
            checkChild(expr1) && checkChild(expr2) && checkChild(expr3)

        case If(predicate, trueValue, falseValue) ⇒
            predicate match {
                case IsNotNull(child) ⇒
                    checkChild(child) && checkChild(trueValue) && checkChild(falseValue)

                case IsNull(child) ⇒
                    checkChild(child) && checkChild(trueValue) && checkChild(falseValue)

                case EqualTo(left, right) ⇒
                    trueValue match {
                        case Literal(null, _) ⇒
                            (left == falseValue || right == falseValue) && checkChild(left) && checkChild(right)

                        case _ ⇒
                            false
                    }

                case _ ⇒
                    false
            }

        case _ ⇒
            false
    }