Package org.kie.api.runtime.process

Interface DataTransformer

  • public interface DataTransformer
    Data transformation capabilities used by data input and data output transformation as part of BPMN2 process definition. It allows plugable implementations.

    • Method Detail

      • compile

        Object compile​(String expression,
               Map<String,​Object> parameters)
        Compiles given expression into reusable unit. This is optional operation and in case it's not supported by given transformed it should return the same expression that was given in the input. If compilation is supported a compiled instance of the expression should be returned.
        Parameters:
        expression - language specific expression
        parameters - parameters e.g. imports defined in the process
        Returns:
        compiled expression instance or same as given as argument expression
        Throws:
        RuntimeException - in case of unexpected errors during compilation

      • transform

        Object transform​(Object expression,
                 Map<String,​Object> parameters)
        Transforms the given expression object (might be compiled expression) using parameters as contextual information (aka bindings) used during evaluation of the expression.
        Parameters:
        expression - expression to evaluate
        parameters - binding parameters
        Returns:
        result of the evaluation
        Throws:
        RuntimeException - in case of unexpected errors during evaluation of the expression