Interface JexlMethod

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      java.lang.Class<?> getReturnType()
      returns the return type of the method invoked.
      java.lang.Object invoke​(java.lang.Object obj, java.lang.Object[] params)
      Invocation method, called when the method invocation should be performed and a value returned.
      boolean isCacheable()
      Specifies if this JexlMethod is cacheable and able to be reused for this class of object it was returned for.
      boolean tryFailed​(java.lang.Object rval)
      Checks whether a tryInvoke failed or not.
      java.lang.Object tryInvoke​(java.lang.String name, java.lang.Object obj, java.lang.Object[] params)
      Attempts to reuse this JexlMethod, checking that it is compatible with the actual set of arguments.
    • Method Detail

      • invoke

        java.lang.Object invoke​(java.lang.Object obj,
                                java.lang.Object[] params)
                         throws java.lang.Exception
        Invocation method, called when the method invocation should be performed and a value returned.
        Parameters:
        obj - the object
        params - method parameters.
        Returns:
        the result
        Throws:
        java.lang.Exception - on any error.
      • tryInvoke

        java.lang.Object tryInvoke​(java.lang.String name,
                                   java.lang.Object obj,
                                   java.lang.Object[] params)
        Attempts to reuse this JexlMethod, checking that it is compatible with the actual set of arguments. Related to isCacheable since this method is often used with cached JexlMethod instances.
        Parameters:
        obj - the object to invoke the method upon
        name - the method name
        params - the method arguments
        Returns:
        the result of the method invocation that should be checked by tryFailed to determine if it succeeded or failed.
      • tryFailed

        boolean tryFailed​(java.lang.Object rval)
        Checks whether a tryInvoke failed or not.
        Parameters:
        rval - the value returned by tryInvoke
        Returns:
        true if tryInvoke failed, false otherwise
      • isCacheable

        boolean isCacheable()
        Specifies if this JexlMethod is cacheable and able to be reused for this class of object it was returned for.
        Returns:
        true if can be reused for this class, false if not
      • getReturnType

        java.lang.Class<?> getReturnType()
        returns the return type of the method invoked.
        Returns:
        return type