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From "Antoine Levy-Lambert (JIRA)" <j...@codehaus.org>
Subject [jira] Commented: (MNG-2509) M2/ANT : Weird ClassCastException in <m:pom> in macrodef when calling Beanshell scripting.
Date Sun, 17 Sep 2006 22:21:11 GMT
    [ http://jira.codehaus.org/browse/MNG-2509?page=comments#action_75030 ] 
            
Antoine Levy-Lambert commented on MNG-2509:
-------------------------------------------

Hello Davy,

this problem might be due to Ant, not to Maven.

It looks like it Ant's bug 40238 which is fixed in Ant 1.7.

You can download Ant 1.7.0Beta2 from ant.apache.org to check whether this solves your issue.


Regards,

Antoine

> 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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