org.wicketstuff.openlayers.proxy

Class WFSProxyBehavior

java.lang.Object

org.apache.wicket.behavior.Behavior

org.apache.wicket.behavior.AbstractAjaxBehavior

org.wicketstuff.openlayers.proxy.WFSProxyBehavior

All Implemented Interfaces:

Serializable, org.apache.wicket.behavior.IBehaviorListener, org.apache.wicket.IComponentAwareEventSink, org.apache.wicket.IRequestListener, org.apache.wicket.markup.html.IComponentAwareHeaderContributor, org.apache.wicket.util.io.IClusterable

public class WFSProxyBehavior
extends org.apache.wicket.behavior.AbstractAjaxBehavior

Author:

mocleiri When working with Web Feature Service (WFS) Requests a proxy needs to be used to get around cross site scripting restrictions that are present in browsers. The Openlayers.org site lists several CGI approaches for proxying. In this approach we implement a proxy within a Wicket Ajax Behavior. In order to make the behaviour work it needs to be added onto the OpenLayersMap; and emitted when the map is created in javascript. Then the OpenLayers.ProxyHost=behaviour.getProxyUrl() method can be used. See openlayers-examples for an example (e.g. MapWithWMSGetFeatureInfo.class) Using this behaviour binds the lifecycle of map access to an active session which is useful in some cases but might be a problem in others. The ProxyRequestTarget implementation could be used for example in a Servlet Filter to proxy without caring about the current session and/or the users authorization to view the map data.

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.apache.wicket.behavior.IBehaviorListener

INTERFACE

Constructor Summary

Constructors

Constructor and Description
WFSProxyBehavior()

Method Summary

Methods

Modifier and Type	Method and Description
String	getProxyUrl()
void	onRequest()

Methods inherited from class org.apache.wicket.behavior.AbstractAjaxBehavior

afterRender, bind, getCallbackUrl, getComponent, onBind, onComponentRendered, onComponentTag, onComponentTag, onUnbind, unbind

Methods inherited from class org.apache.wicket.behavior.Behavior

beforeRender, canCallListenerInterface, detach, getStatelessHint, isEnabled, isTemporary, onConfigure, onEvent, onException, onRemove, renderHead

Methods inherited from class java.lang.Object

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

Constructor Detail

WFSProxyBehavior

public WFSProxyBehavior()

Method Detail

onRequest

public void onRequest()

getProxyUrl

public String getProxyUrl()

Parameters:

onlyTargetActivePage -

Returns:

the proxy url that should be appended to OpenLayers.ProxyHost