org.mentawai.filter
Class OutjectionFilter

java.lang.Object
  org.mentawai.core.OutputWrapper
      org.mentawai.filter.OutjectionFilter

All Implemented Interfaces:

Map<String,Object>, Filter, Output

public class OutjectionFilter
extends OutputWrapper
implements Filter

A filter that takes all the properties of the action and place them in the output, so that you don't have to call output.setValue() manually. Note that for plain ations this filter uses the method action.getClass().getDeclaredMethods() in order to find the getters, in other words, it will only find getters of the base class and not from its superclasses. This is ok because action inheritance is not very common. If you are using a POJO action or a model-driven action it will use the method getMethods instead. For ModelDriven actions, the method action.getModel().getClass().getMethods() is used instead, pretty much like in the OVFilter.

Author:

Sergio Oliveira

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

OutjectionFilter()
Creates a OutjectionFilter.

Method Summary

void	destroy() Gives a chance to the filter to deallocalte any resources before it is destroyed.
String	filter(InvocationChain chain) Executes the filter.
Object	getValue(String key) Gets an output value by name.

Methods inherited from class org.mentawai.core.OutputWrapper

add, clear, containsKey, containsValue, entrySet, get, has, isEmpty, keys, keySet, put, putAll, remove, removeValue, setObject, setObject, setOutput, setValue, size, values

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

OutjectionFilter

public OutjectionFilter()

Creates a OutjectionFilter.

Method Detail

getValue

public Object getValue(String key)

Description copied from interface: Output

Gets an output value by name.

Specified by:

getValue in interface Output

Overrides:

getValue in class OutputWrapper

Parameters:

key - The name of the value

Returns:

The value or null if it does not exist

filter

public String filter(InvocationChain chain)
              throws Exception

Description copied from interface: Filter

Executes the filter.

Specified by:

filter in interface Filter

Parameters:

chain - The InvocationChain for the action this filter is being applied to.

Returns:

The result of the filter or the action the filter is being applied to.

Throws:

Exception

destroy

public void destroy()

Description copied from interface: Filter

Gives a chance to the filter to deallocalte any resources before it is destroyed. This is called when the web application is stopped, in other words, this has nothing to do with garbage collection.

Specified by:

destroy in interface Filter