Deployment plan to update web.xml

Question

Hello,
Is it possible to use a deployement plan to update the web.xml file of an war inside an ear ?
I would like to map a servlet on a new URI using a new workmanager by configuration (I mean once my application is built) I suppose it is possible to use the deployment plan to add a section inside the web.xml.
For example, I would like to add the folowing section :
<servlet>
<servlet-name>DummyServlet</servlet-name>
<servlet-class>com.company.servlets.DummyServlet</servlet-class>
<init-param>
<param-name>wl-dispatch-policy</param-name>
<param-value>DummyWorkManager</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>DummyServlet</servlet-name>
<url-pattern>/myDummyServlet</url-pattern>
</servlet-mapping>
Thank you for helping me on this point
Best Regards,
C.

Answer 1

To my knowledge you can not add elements to your deployment descriptors, but you can change them, for example
say we have the following ejb-jar.xml
<ejb-jar ...>
    <enterprise-beans>
        <session>
            <ejb-name>Bedrijf</ejb-name>
            <env-entry>
                <env-entry-name>something</env-entry-name>
                <env-entry-type>java.lang.String</env-entry-type>
                <env-entry-value>iets</env-entry-value>
            </env-entry>
        </session>
    </enterprise-beans>
</ejb-jar>and we want to change the value of something. Now we can generate a plan.xml (for example by using weblogic.Plangenerator
http://download.oracle.com/docs/cd/E13222_01/wls/docs90/deployment/wlplangenerator.html). When we do this for an EAR
file we get something like the following:
<?xml version='1.0' encoding='UTF-8'?>
<deployment-plan xmlns="http://xmlns.oracle.com/weblogic/deployment-plan" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.oracle.com/weblogic/deployment-plan http://xmlns.oracle.com/weblogic/deployment-plan/1.0/deployment-plan.xsd">
  <application-name>test</application-name>
  <variable-definition>
    <variable>
      <name>SessionDescriptor_timeoutSecs_12870427304900</name>
      <value>1800</value>
    </variable> 
    <variable>
        <name>something</name>
        <value>anders</value>
    </variable>
  </variable-definition>
  <module-override>
    <module-name>EJBSessionBeans.ear</module-name>
    <module-type>ear</module-type>
    <module-descriptor external="true">
      <root-element>weblogic-application</root-element>
      <uri>META-INF/weblogic-application.xml</uri>
      <variable-assignment>
        <name>SessionDescriptor_timeoutSecs_12870427304900</name>
        <xpath>/weblogic-application/session-descriptor/timeout-secs</xpath>
      </variable-assignment>
    </module-descriptor>
    <module-descriptor external="false">
      <root-element>application</root-element>
      <uri>META-INF/application.xml</uri>
    </module-descriptor>
    <module-descriptor external="true">
      <root-element>wldf-resource</root-element>
      <uri>META-INF/weblogic-diagnostics.xml</uri>
    </module-descriptor>
  </module-override>
  <module-override>
    <module-name>Model.jar</module-name>
    <module-type>ejb</module-type>
    <module-descriptor external="true">
      <root-element>weblogic-ejb-jar</root-element>
      <uri>META-INF/weblogic-ejb-jar.xml</uri>
    </module-descriptor>
    <module-descriptor external="false">
      <root-element>ejb-jar</root-element>
      <uri>META-INF/ejb-jar.xml</uri>
       <variable-assignment>
        <name>something</name>
        <xpath>/ejb-jar/enterprise-beans/session/[ejb-name="Bedrijf"]/env-entry/[env-entry-name="something"]/env-entry-value</xpath>
        <operation>replace</operation>
      </variable-assignment>
    </module-descriptor>
  </module-override>
  <module-override>
    <module-name>Userinterface.war</module-name>
    <module-type>war</module-type>
    <module-descriptor external="true">
      <root-element>weblogic-web-app</root-element>
      <uri>WEB-INF/weblogic.xml</uri>
      <hash-code>1287042734068</hash-code>
    </module-descriptor>
    <module-descriptor external="false">
      <root-element>web-app</root-element>
      <uri>WEB-INF/web.xml</uri>
    </module-descriptor>
  </module-override>
  <config-root>...</config-root>
</deployment-plan>To this plan.xml we added a variable definition
<variable-definition>
      <variable>
        <name>something</name>
        <value>anders</value>
    </variable>
</variable-definition>To change the contents of the variable something we add the following to the ejb-jar module section
<module-descriptor external="false">
      <variable-assignment>
        <name>something</name>
        <xpath>/ejb-jar/enterprise-beans/session/[ejb-name="Bedrijf"]/env-entry/[env-entry-name="something"]/env-entry-value</xpath>
        <operation>replace</operation>
      </variable-assignment>
    </module-descriptor>The same steps can be followed when you want to change the contents of your web.xml (but note that the elements must be present
otherwise the xpath assignment will not work)