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From "Davy Toch (JIRA)" <j...@codehaus.org>
Subject [jira] Commented: (MNG-2509) M2/ANT : Weird ClassCastException in <m:pom> in macrodef when calling Beanshell scripting.
Date Mon, 18 Sep 2006 19:42:11 GMT
    [ http://jira.codehaus.org/browse/MNG-2509?page=comments#action_75137 ] 
            
Davy Toch commented on MNG-2509:
--------------------------------

Tried it with ANT 1.7.0Beta1 but unfortunately same problem. Will try it with 1.7.0Beta2 once
the Apache site is up again.

> M2/ANT : Weird ClassCastException in <m:pom> in macrodef when calling Beanshell
scripting.
> ------------------------------------------------------------------------------------------
>
>                 Key: MNG-2509
>                 URL: http://jira.codehaus.org/browse/MNG-2509
>             Project: Maven 2
>          Issue Type: Bug
>          Components: Ant tasks
>    Affects Versions: 2.0.4
>         Environment: - ANT 1.6.5 (with bsh-2.0b4.jar in ANT_HOME/lib)
> - JDK 1.5
>            Reporter: Davy Toch
>         Attachments: build.xml, pom.xml
>
>
> Hi,
> In ANT, sometimes more than one artifact is generated from the same
> build file (e.g. myapp.jar, myapp-client.jar, myapp-with-deps.jar).
> If using the M2 plugin for ANT (currently 2.0.4), this would mean
> we would need three POM's for the above 3 artifacts. However, in the
> above case the 3 POM's would be almost identical.
> So I have taken the following approach in order to have only one generic
> POM:
> pom.xml (with ANT tokens _TOKEN_...):
> <project xmlns="http://maven.apache.org/POM/4.0.0"
>   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
>   <modelVersion>4.0.0</modelVersion>
>   <groupId>be.steria.test</groupId>
>   <artifactId>_TOKEN_ARTIFACTID_</artifactId>
>   <packaging>_TOKEN_PACKAGING_</packaging>
>   <version>1.5-SNAPSHOT</version>
>   <description>Test artifact</description>
>   <dependencies>
>     <dependency>
>       <groupId>log4j</groupId>
>       <artifactId>log4j</artifactId>
>       <version>1.2.9</version>
>       <scope>compile</scope>
>     </dependency>
>     <dependency>
>       <groupId>junit</groupId>
>       <artifactId>junit</artifactId>
>       <version>3.8.1</version>
>       <scope>test</scope>
>     </dependency>
>   </dependencies>
>   <distributionManagement>
>     <repository>
>       <id>repo_dev</id>
>       <url>scp://localhost/m2demo/repo_dev</url>
>     </repository>
>   </distributionManagement>
> </project>
> build.xml:
> <project name="example-ant-using-m2-plugin" default="m2init"
>   xmlns:m="antlib:org.apache.maven.artifact.ant">
>   <macrodef name="create-pom">
>     <attribute name="pomRefId"/>
>     <attribute name="artifactId"/>
>     <attribute name="packaging" default="jar"/>
>     <sequential>
>       <!-- IMPORTANT : derived POM files must be generated in the same
>       folder as pom.xml, otherwise the paths, ... will be incorrect -->
>       <copy file="pom.xml" filtering="true"
>         toFile="pom-@{pomRefId}.derived.xml">
>         <filterchain>
>           <tokenfilter>
>             <replacestring from="_TOKEN_ARTIFACTID_"
>               to="@{artifactId}"/>
>             <replacestring from="_TOKEN_PACKAGING_"
>               to="@{packaging}"/>
>           </tokenfilter>
>         </filterchain>
>       </copy>
>       <m:pom id="@{pomRefId}" file="pom-@{pomRefId}.derived.xml"/>
>     </sequential>
>   </macrodef>
>   <target name="m2init">
>     <m:pom id="M2POM" file="pom.xml"/>
>     <!-- causes ClassCastException in macrodef 'create-pom' -->
>     <!--script language="beanshell"/-->
>     <!-- create POM's on-the-fly (one for each artifact) -->
>     <create-pom pomRefId="M2POM_MYAPP" artifactId="myapp"/>
>     <create-pom pomRefId="M2POM_MYAPP_CLIENT" artifactId="myapp-client"/>
>     <create-pom pomRefId="M2POM_MYAPP_WITH_DEPS" artifactId="myapp-with-deps"/>
>       
>   </target>
>   <target name="package" depends="m2init">
>     <!-- ... generate artifacts (pure ANT) ... -->
>   </target>
>   <target name="install" depends="package">
>     <m:install file="myapp.jar"
>       pomRefId="M2POM_MYAPP"/>
>     <m:install file="myapp-client.jar"
>       pomRefId="M2POM_MYAPP_CLIENT"/>
>     <m:install file="myapp-with-deps.jar"
>       pomRefId="M2POM_MYAPP_WITH_DEPS"/>
>   </target>
>   <target name="deploy">
>     <m:deploy file="myapp.jar"
>       pomRefId="M2POM_MYAPP"/>
>     <m:deploy file="myapp-client.jar"
>       pomRefId="M2POM_MYAPP_CLIENT"/>
>     <m:deploy file="myapp-with-deps.jar"
>       pomRefId="M2POM_MYAPP_WITH_DEPS"/>
>   </target>
> </project>
> Now if I execute the above, everything works fine, but if I add <script
> language="beanshell"/> in the target 'm2init', then the following error
> is generated on the first <create-pom> call:
>   "java.lang.ClassCastException: org.apache.maven.artifact.ant.Pom"
> Regards,
> Davy Toch

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