update-version.xml

<?xml version="1.0"?>
<project name="Drools" basedir="." default="usage">

  <target name="usage">
      <echo>ant -f update-version.xml -Dcurrent="3.1.0.M1" -Dnew="4.0.0.SNAPSHOT" updateVersion</echo>
  </target>

  <target name="updateVersion" depends="checkProps, error" unless="propsNotSet">
      <replaceregexp match="&lt;version&gt;${current}&lt;/version&gt;"
                     replace="&lt;version&gt;${new}&lt;/version&gt;" 
                     byline="true">
        <fileset dir="." includes="*pom.xml, 
				   drools-*/pom.xml, 
				   drools-eclipse/**/pom.xml,
				   drools-examples/**/pom.xml,  
				   drools-pipeline/**/pom.xml,  
                                   drools-docs/pom.xml, 
				   drools-docs/drools-*/pom.xml,
				   drools-docs/docbook-*/pom.xml,
				   drools-dataloaders/**/pom.xml,
				   drools-container/**/pom.xml,
                                   drools-planner/**/pom.xml, 
                                   drools-process/**/pom.xml,
                                   guvnor-repository-connector/**/pom.xml,
                                   drools-grid/**/pom.xml"/>
      </replaceregexp>             

      <replaceregexp match="&lt;releaseinfo&gt;${current}&lt;/releaseinfo&gt;"
                     replace="&lt;releaseinfo&gt;${new}&lt;/releaseinfo&gt;" 
                     byline="true">
        <fileset dir="." includes="drools-docs/drools-*/src/main/docbook/**/master.xml"/>
      </replaceregexp> 

      <replaceregexp match="droolsVersion=${current}"
                     replace="droolsVersion=${new}" 
                     byline="true">
        <fileset dir="." includes="drools-eclipse/**/build.properties"/>
      </replaceregexp>          

      <replaceregexp match="Bundle-Version: ${current}"
                     replace="Bundle-Version: ${new}"
                     byline="true">
          <fileset dir="drools-eclipse" includes="drools-eclipse-plugin/META-INF/MANIFEST.MF, 
						  **/META-INF/MANIFEST.MF,
						  drools-eclipse-test/META-INF/MANIFEST.MF"/>        
      </replaceregexp>       

      <replaceregexp match="Fragment-Host: org.drools.eclipse;bundle-version=&#34;${current}&#34;"
                     replace="Fragment-Host: org.drools.eclipse;bundle-version=&#34;${new}&#34;"
                     byline="true">
          <fileset dir="drools-eclipse" includes="drools-eclipse-plugin/META-INF/MANIFEST.MF,
						  **/META-INF/MANIFEST.MF, 
						  drools-eclipse-test/META-INF/MANIFEST.MF"/>        
      </replaceregexp>       
      
      <replaceregexp match="version=&#34;${current}&#34;"
                     replace="version=&#34;${new}&#34;"
                     byline="true">
          <fileset dir="drools-eclipse" includes="drools-eclipse-feature/feature.xml, 
						drools-eclipse-test-feature/feature.xml, 
						**/feature.xml"/>        
      </replaceregexp>                     
                     
    
      <!--replaceregexp file="drools-eclipse/build.properties"
                     match="droolsVersion=${current}"
                     replace="droolsVersion=${new}"
                     byline="true" /-->    
    
      <replaceregexp match="&lt;releaseinfo&gt;${current}&lt;/releaseinfo&gt;"
                     replace="&lt;releaseinfo&gt;${new}&lt;/releaseinfo&gt;"
                     byline="true">
          <fileset dir="drools-docs" includes="drools-docs-*/en/master.xml"/>
      </replaceregexp>
                     
  </target>       
  
  <target name="error" if="propsNotSet">
    <echo>current and new are not set</echo>
  </target>           
  
  <target name="checkProps">
     <condition property="propsSet" value="true">
       <not>
         <isset property="current" />
       </not>
     </condition>   
     
     <condition property="propsNotSet" value="true">
       <not>
         <isset property="new" />
       </not>
     </condition>        
  </target>
  
</project>