Interface NullHandler

All Known Implementing Classes:
ObjectNullHandler
public interface NullHandler
Interface for handling null results from Chains. Object has the opportunity to substitute an object for the null and continue.

  • Method Details

    • nullMethodResult

      Object nullMethodResult(OgnlContext context, Object target, String methodName, Object[] args)
      Method called on target returned null.
      Parameters:
      context - the current execution context.
      target - the Object on which the method was called.
      methodName - the name of the method which was called.
      args - the arguments to the method that was called.
      Returns:
      the result Object containing the state of the method call that returned null.

    • nullPropertyValue

      Object nullPropertyValue(OgnlContext context, Object target, Object property)
      Property in target evaluated to null. Property can be a constant String property name or a DynamicSubscript.
      Parameters:
      context - the current execution context.
      target - the Object to which the property belongs.
      property - the property whose value evaluated to null.
      Returns:
      the result Object containing the state of the property that evaluated to null.