Description Badri 2010-06-08 04:41:24 EDT

Build Identifier: 

There are two issues.
1)Using an object of WebArtifactEdit, getWebApp() method is called.This internally calls org.eclipse.jst.j2ee.web.componentcore.util.WebArtifactEdit.getDeploymentDescriptorRoot().Here getDeploymentDescriptorResource().getContents() is called and if no contents exist,addWebAppIfNecessary is called to create a web.xml file. 

Then contents.get(0) is directly returned which throws an IndexOutOfBoundsException if no contents exist.A check has to be added like
return contents.size() > 0?(EObject) contents.get(0):null; to prevent this.

2)Assuming that 1) is fixed,there is another issue of web-app version not getting added in web.xml.
The scenario is that web.xml doesn't exist in the project and WebArtifactEdit.getWebApp() is called.As discussed in 1), addWebAppIfNecessary is called to create a web.xml file.The function internally stores the webapp id,creates the list of welcome files.It also sets the version of webapp(through a notification in aResource.getContents().add(webAppNew);) based on module version id.But it finally creates a web.xml file with just a line(<?xml version="1.0" encoding="UTF-8"?>) and saves it.

Another call to WebArtifactEdit.getWebApp() again sets the webappid and the list of welcome files, but it doesn't set the version of the webapp(no notification in aResource.getContents().add(webAppNew) comes to set it).The web.xml is updated with the other contents like welcome files,webapp tag etc.,but version is not set which is flagged as an XML Problem.The version of the web-app has to be set in the web.xml file.

Reproducible: Always