PortletURLGenerationListener (Portlet 4.0 API Specification)

```
public interface PortletURLGenerationListener<T extends PortletURL & RenderURL,U extends PortletURL & ActionURL>
```
Portlet applications can register portlet URL listeners in order to filter URLs before they get generated. In order to receive a callback from the portlet container before a portlet URL is generated the portlet application needs to implement this interface and register it in the deployment descriptor with the listener element.

Since:

2.0

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`filterActionURL(U actionURL)`	Callback being called by the portlet container before `toString` or `write` are executed on action URLs.
`void`	`filterRenderURL(T renderURL)`	Callback being called by the portlet container before `toString` or `write` are executed on render URLs.
`void`	`filterResourceURL(ResourceURL resourceURL)`	Callback being called by the portlet container before `toString` or `write` are executed on resource URLs.

- Method Detail
  - filterActionURL
```
void filterActionURL(U actionURL)
```
    Callback being called by the portlet container before toString or write are executed on action URLs.
    
    Parameters:
    
    actionURL - action URL to be generated
  - filterRenderURL
```
void filterRenderURL(T renderURL)
```
    Callback being called by the portlet container before toString or write are executed on render URLs.
    
    Parameters:
    
    renderURL - render URL to be generated
  - filterResourceURL
```
void filterResourceURL(ResourceURL resourceURL)
```
    Callback being called by the portlet container before toString or write are executed on resource URLs.
    
    Parameters:
    
    resourceURL - resource URL to be generated