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 Summary

    Modifier and Type
    Method
    Description
    Object
    compile(String expression, Map<String,Object> parameters)
    Compiles given expression into reusable unit.
    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.

  • Method Details

    • 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