[SOLVED] Disconnecting session when client close browser's window or tab

Question

Hello,
I'm looking for disconnect my database session and invalidate the session with the "onunload" af:document function. I think that is the same as the "onunload" in "body" html tag.
I see some documentation about that, for example:
http://www.oracle.com/technology/products/jdev/htdocs/partners/addins/exchange/jsf/doc/tagdoc/core/document.html
and I see that is enable to put an EL Expression, so I try with this:
<f:view>
<af:document binding="#{backing_user.document_user}" id="document_user" onunload="#{backing_user.logout}">
<af:form binding="#{backing_user.form_user}" id="form_user"/>
</af:document>
</f:view>
and not works, then I try:
<f:view>
<af:document binding="#{backing_user.document_user}" id="document_user" onunload="return logout_function()">
<af:form binding="#{backing_user.form_user}" id="form_user"/>
</af:document>
</f:view>
and as this, I try a lot of combinations, with no result. I take my time searching in various browsers but, surprisingly, I fount not much information about this (rare, I think is a very interesting matter).
What is the way to be able this funcionallity?
Thanks,
Westh
Edit: obviusly, logout_function() is a correct javascript function :P

Answer 1

Hello,
I resolve my problem. Now I go to describe the steps in a little tutorial.
Remmember that this is a very basic tutorial that only allow you to do this matter, but not in deep. See bottom links for more information.
Step's list:
1) Download Shale framework from http://shale.apache.org/index.html#download
2) Import all .jar libraries in your application.
3) Open your web.xml file and add this:
<context-param>
<param-name>org.apache.shale.remoting.DYNAMIC_RESOURCES</param-name>
<param-value>/dynamic/*:org.apache.shale.remoting.impl.MethodBindingProcessor</param-value>
</context-param>
4) Consider this:
4.1) Managed bean --> userBean.java that have this method:
public void logout () {
/* Your logout code */
and this name in faces-config.xml:
<managed-bean>
<managed-bean-name>userBeanId</managed-bean-name>
<managed-bean-class>userBean</managed-bean-class>
<managed-bean-scope>session</managed-bean-scope>
</managed-bean>
4.2) JSP Page --> home.jsp that have this code:
A clinet listener:
<af:clientListener method="unloadEvent" type="load"/>
and this javascript functions:
<f:verbatim>
<script type="text/javascript">
function unloadEvent () {
window.onunload = function () {
processUnload();
function processUnload () {
var httpRequest;
if (window.XMLHttpRequest) {
httpRequest = new XMLHttpRequest();
} else if (window.ActiveXObject) {
httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
httpRequest.overrideMimeType('text/xml');
httpRequest.onreadystatechange = function() { alertContents(httpRequest); };
httpRequest.open('GET', 'dynamic/userBeanId/logout.faces', false);
httpRequest.send('');
function alertContents(httpRequest) {
if (httpRequest.readyState == 4) {
if (!httpRequest.status == 200) {
alert('There was a problem with the request. Http code: ' + httpRequest.status);
</script>
</f:verbatim>
Assuming the suffix '.faces' is mapped to the JSF servlet.
With this, you are able to acces to logout method of userBean (using ajax) when client closes window or tab. No servlets, no 'logout.jsp' pages, etc; and the most important thing: the code never be repeat! it's funny :)
Westh
Resources:
http://thepeninsulasedge.com/blog/2007/06/22/adf-faces-rc-more-on-javascript/
http://thepeninsulasedge.com/frank_nimphius/adf-faces-rich-client-javascript-programming/
http://www.oracle.com/technology/products/adf/adffaces/11/doc/multiproject/adf-richclient-api/tagdoc/af_clientListener.html
http://shale.apache.org/shale-remoting/apidocs/org/apache/shale/remoting/package-summary.html
http://shale.apache.org/shale-remoting/index.html