webwork.dispatcher

Class DynamicViewMapping

java.lang.Object

webwork.dispatcher.DynamicViewMapping

All Implemented Interfaces:

ViewMapping

public class DynamicViewMapping
extends Object
implements ViewMapping

This view mapping allows for dynamic values to be used in the view specification. The dynamic expressions are specified as: ${someWWExpression} The expression will be looked up on the value stack. When all dynamic expressions have been looked up the DynamicViewMapping also checks if the view is an action, and wraps the view it in a ViewActionWrapper in that case. If the view did not contain dynamic data then it is cached, otherwise it is not.

Version:

$Revision: 1.2 $

Author:

Dick Zetterberg (dick@transitor.se)

See Also:

ViewMapping

Field Summary

Fields

Modifier and Type	Field and Description
protected String	actionSuffix
protected String	actionSuffixParam
protected Map	cache
protected ViewMapping	delegate
protected static org.apache.commons.logging.Log	log
protected Object	NULL_VIEW

Constructor Summary

Constructors

Constructor and Description
DynamicViewMapping(ViewMapping aDelegate)

Method Summary

Methods

Modifier and Type	Method and Description
protected String	checkDynamicView(String view) Check if the supplied string specifies a dynamic view.
protected int	getMatchingBrace(String view, int dynStart)
Object	getView(String anActionName, String aViewName) Get view corresponding to given action and view name

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static org.apache.commons.logging.Log log

delegate

protected ViewMapping delegate

cache

protected Map cache

actionSuffix

protected String actionSuffix

actionSuffixParam

protected String actionSuffixParam

NULL_VIEW

protected final Object NULL_VIEW

Constructor Detail

DynamicViewMapping

public DynamicViewMapping(ViewMapping aDelegate)

Method Detail

getView

public Object getView(String anActionName,
             String aViewName)

Get view corresponding to given action and view name

Specified by:

getView in interface ViewMapping

checkDynamicView

protected String checkDynamicView(String view)

Check if the supplied string specifies a dynamic view. In that case lookup the dynamic elements on the stack. If not, return null. The parameter view should not be null

getMatchingBrace

protected int getMatchingBrace(String view,
                   int dynStart)