Class CompareNode

  • All Implemented Interfaces:
    IParsedExpression, Node, java.io.Serializable

    public class CompareNode
    extends ExpressionNode
    Compare node compares it's (two) child nodes. Also supports instanceof operator (second child has to evaluate to class object).
    See Also:
    Serialized Form
    • Constructor Detail

      • CompareNode

        public CompareNode​(jadex.javaparser.javaccimpl.ParserImpl p,
                           int id)
        Create a node.
        Parameters:
        p - The parser.
        id - The id.
    • Method Detail

      • setText

        public void setText​(java.lang.String text)
        Set the token text.
        Overrides:
        setText in class ExpressionNode
        Parameters:
        text - The token text.
      • precompile

        public void precompile()
        Check argument number, and precompute expression when all children are constant.
        Overrides:
        precompile in class ExpressionNode
      • getValue

        public java.lang.Object getValue​(IValueFetcher fetcher)
        Evaluate the expression in the given state with respect to given parameters.
        Specified by:
        getValue in interface IParsedExpression
        Specified by:
        getValue in class ExpressionNode
        Parameters:
        params - The parameters (string, value pairs), if any.
        Returns:
        The value of the term.
      • toPlainString

        public java.lang.String toPlainString()
        Create a string representation of this node and its subnodes.
        Specified by:
        toPlainString in interface Node
        Overrides:
        toPlainString in class ExpressionNode
        Returns:
        A string representation of this node.
      • compare

        protected int compare​(java.lang.Object val1,
                              java.lang.Object val2)
        Compare two values.
        Parameters:
        val1 - The first value.
        val2 - The second value.
        Returns:
        A negative integer, zero, or a positive integer as the first value is less than, equal to, or greater than the second value.
        Throws:
        java.lang.ClassCastException - when the values are not comparable.
      • toString

        public static java.lang.String toString​(int operator)
        Convert an operator to a string representation.
        Parameters:
        operator - The operator
        Returns:
        A string representation of the operator.
      • fromString

        public static int fromString​(java.lang.String operator)
        Convert an operator from a string representation.
        Parameters:
        operator - The operator as string.
        Returns:
        The int value of the operator.
      • equals

        public boolean equals​(java.lang.Object o)
        Test if two nodes are equal.
        Overrides:
        equals in class ExpressionNode
      • hashCode

        public int hashCode()
        Get the hash code for the node.
        Overrides:
        hashCode in class ExpressionNode