Class CoreOperationRelationalExpression

    • Constructor Detail

      • CoreOperationRelationalExpression

        protected CoreOperationRelationalExpression​(Expression[] args)
        Create a new CoreOperationRelationalExpression.
        Parameters:
        args - arguments
    • Method Detail

      • computeValue

        public final Object computeValue​(EvalContext context)
        Description copied from class: Expression
        Evaluates the expression. If the result is a node set, returns the first element of the node set.
        Specified by:
        computeValue in class CoreOperation
        Parameters:
        context - evaluation context
        Returns:
        Object
      • getPrecedence

        protected final int getPrecedence()
        Description copied from class: CoreOperation
        Computes the precedence of the operation.
        Specified by:
        getPrecedence in class CoreOperation
        Returns:
        int precedence
      • isSymmetric

        protected final boolean isSymmetric()
        Description copied from class: CoreOperation
        Returns true if the operation is not sensitive to the order of arguments, e.g. "=", "and" etc, and false if it is, e.g. "<=", "div".
        Specified by:
        isSymmetric in class CoreOperation
        Returns:
        boolean
      • evaluateCompare

        protected abstract boolean evaluateCompare​(int compare)
        Template method for subclasses to evaluate the result of a comparison.
        Parameters:
        compare - result of comparison to evaluate
        Returns:
        ultimate operation success/failure