Package com.aquima.interactions.expressions

Class ExpressionFixer

  • public class ExpressionFixer
extends Object
    This class rewrites decision condition alternative expressions to full expressions which are parsable by the 4.2 expression parser.
    Since:
    5.0
    Author:
    O. Kerpershoek, F. van der Meer

    • Constructor Detail

      • ExpressionFixer

        public ExpressionFixer​(boolean useBexprOpr)
        Constructs the decision table expression fixer with a boolean indicating if the expressions should be fixed for a release 4 parser. As the release 4 parser does not allow a compare (=, !=) between boolean expressions, a special keyword (BEQ, BNE) is used for these type of comparisons.
        Parameters:
        useBexprOpr - Boolean indicating if expressions should be fixed for a release 4 parser.

    • Method Detail

      • parse

        public String parse​(String lhs,
                    String expression)
        This method rewrites a 4.2 syntax expression used in decision tables, to an expression that is valid in the 5.0 syntax. The 4.2 syntax allows for incomplete expressions to be evaluated with a left-hand-side value, which is inserted at 'appropriate' points in the expression.
        For example: The expression '< 4 AND > 7' with an LHS value of 'X', will be rewritten to the expression 'X < 4 AND X > 7'
        Parameters:
        lhs - The left-hand-side value which should be used in the partial 4.2 expression.
        expression - The partial 4.2 expression that needs to be rewritten.
        Returns:
        Complete expression combining the LHS value and the partial expression.

      • parseWithDeclarations

        public String parseWithDeclarations​(String lhs,
                                    String expression)

      • indexOfDeclarationEnd

        public Integer indexOfDeclarationEnd​(String expression)