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 Using the classpaths
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 Carlos Sanchez, Franz Allan Valencia See
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 27 July 2006
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 ~~ Licensed to the Apache Software Foundation (ASF) under one
 ~~ or more contributor license agreements.  See the NOTICE file
 ~~ distributed with this work for additional information
 ~~ regarding copyright ownership.  The ASF licenses this file
 ~~ to you under the Apache License, Version 2.0 (the
 ~~ "License"); you may not use this file except in compliance
 ~~ with the License.  You may obtain a copy of the License at
 ~~
 ~~   http://www.apache.org/licenses/LICENSE-2.0
 ~~
 ~~ Unless required by applicable law or agreed to in writing,
 ~~ software distributed under the License is distributed on an
 ~~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 ~~ KIND, either express or implied.  See the License for the
 ~~ specific language governing permissions and limitations
 ~~ under the License.

 ~~ NOTE: For help with the syntax of this file, see:
 ~~ http://maven.apache.org/doxia/references/apt-format.html

Referencing the Maven Classpaths

 A property is set in the Ant build for each project dependency.  Each property name uses the format 
 <<groupId:artifactId:type[:classifier]>>.  For example, to show the path to a 
 jar dependency with groupId "org.apache" and artifactId "common-util", the following could be used.

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#set( $D = '$' )
<echo message="${D}{org.apache:common-util:jar}"/> 
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 If the dependency includes a classifier, the classifier is appended to the property name.
 For example, groupId "org.apache", artifactId "common-util", type "jar", and classifier "jdk14".
 
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#set( $D = '$' )
<echo message="${D}{org.apache:common-util:jar:jdk14}"/> 
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 <<Note:>> the old format "maven.dependency.groupId.artifactId[.classifier].type.path" is not supported as of version 
 3.0.0 of the plugin.
 
 You can also use these classpath references:
  
  * <<<maven.compile.classpath>>>

  * <<<maven.runtime.classpath>>>

  * <<<maven.test.classpath>>>

  * <<<maven.plugin.classpath>>>
  

 For example, to display Maven's classpaths using antrun, we can do this

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<project>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>my-test-app</artifactId>
  <groupId>my-test-group</groupId>
  <version>1.0-SNAPSHOT</version>

  <build>
    <plugins>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-antrun-plugin</artifactId>
        <version>${project.version}</version>
        <executions>
          <execution>
            <id>compile</id>
            <phase>compile</phase>
            <configuration>
              <target>
                <property name="compile_classpath" refid="maven.compile.classpath"/>
                <property name="runtime_classpath" refid="maven.runtime.classpath"/>
                <property name="test_classpath" refid="maven.test.classpath"/>
                <property name="plugin_classpath" refid="maven.plugin.classpath"/>

                <echo message="compile classpath: ${compile_classpath}"/>
                <echo message="runtime classpath: ${runtime_classpath}"/>
                <echo message="test classpath:    ${test_classpath}"/>
                <echo message="plugin classpath:  ${plugin_classpath}"/>
              </target>
            </configuration>
            <goals>
              <goal>run</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>

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 or alternatively, we can use an external <<<build.xml>>>.

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<project>
  <modelVersion>4.0.0</modelVersion>
  <artifactId>my-test-app</artifactId>
  <groupId>my-test-group</groupId>
  <version>1.0-SNAPSHOT</version>

  <build>
    <plugins>

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-antrun-plugin</artifactId>
        <version>${project.version}</version>
        <executions>
          <execution>
            <id>compile</id>
            <phase>compile</phase>
            <configuration>
              <target>
                <property name="compile_classpath" refid="maven.compile.classpath"/>
                <property name="runtime_classpath" refid="maven.runtime.classpath"/>
                <property name="test_classpath" refid="maven.test.classpath"/>
                <property name="plugin_classpath" refid="maven.plugin.classpath"/>

                <ant antfile="${basedir}/build.xml">
                  <target name="test"/>
                </ant>
              </target>
            </configuration>
            <goals>
              <goal>run</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
</project>
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 The <<<build.xml>>>:

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<?xml version="1.0"?>
<project name="test6">

    <target name="test">

      <echo message="compile classpath: ${compile_classpath}"/>
      <echo message="runtime classpath: ${runtime_classpath}"/>
      <echo message="test classpath:    ${test_classpath}"/>
      <echo message="plugin classpath:  ${plugin_classpath}"/>

    </target>

</project>
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