[Xmltask-users] Issues working with web.xml

[Inger, M. <Inger@Synygy.com>]

> I have the following (somewhat shortened) web.xml, which illustrates my
> problem
> (FYI: I'm using JDK 1.4.2_06, and ANT 1.6.2)
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <web-app version="2.4"
>     xmlns="http://java.sun.com/xml/ns/j2ee"
>     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
> http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
> 
>     <display-name>Build Web Interface</display-name>
> 
>     <context-param>
>         <param-name>build-scripts-location</param-name>
>         <param-value>E:\BuildHome</param-value>
>     </context-param>
> 
> </web-app>
> 
> I am trying to edit the "build-scripts-location" context parameter, but to
> illustrate my problem,
> i'm just working with the //context-param xpath.  I use XMLTask to try to
> remove all the context-param
> elements as follows:
> 
>         <xmltask source="web.xml" dest="web2.xml">
>             <remove path="//context-param" />
>             <!--
>             <replace
> path="//context-param/param-name[contains(param-name/text(),'build-scripts
> -location')]/param-value/text()"
>                 withText="installLocation"/>
>                 -->
>         </xmltask>
> 
> However, the output file "web2.xml" contains the following (notice that
> the context-param element is still there):
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
> http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
> 
>     <display-name>Build Web Interface</display-name>
> 
>     <context-param>
>         <param-name>build-scripts-location</param-name>
>         <param-value>E:\BuildHome</param-value>
>     </context-param>
> 
> </web-app>
> 
> The following java code runs and indicates that there is 1 element which
> matches the xpath expression "//context-param":
> 
>     public  void test1()
>         throws Exception
>     {
>         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
>         DocumentBuilder db = dbf.newDocumentBuilder();
>         Document d = db.parse("web.xml");
> 
>         String xpath= "//context-param";
>         NodeIterator it = XPathAPI.selectNodeIterator(d, xpath);
>         Node node = null;
>         int cnt = 0;
>         while ((node = it.nextNode()) != null) {
>             System.out.println(node.getNodeName());
>             cnt++;
>         }
> 
>         assertEquals(1, cnt);
>     }
> 
> This makes me wonder if XMLTask is using the XPath API that's included in
> JDK1.4 or some
> other XPath API.
> 
> Finally, i've noticed that if i remove all the attributes, other than
> "version" on the web-app element,
> that xmltask works ask expected producting the following output:
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <web-app version="2.4">
> 
>     <display-name>Build Web Interface</display-name>
> 
> </web-app>
> 
> Can anyone help me in figuring out what's going here?
>