Application: gvSIG desktop

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Usefull maven "howtos" and FAQs

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.. contents::

How to reduce the process of "install" to run as fast as possible.

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Can reduce install execution skiping test execution and compilation,

javadoc generation, test signature checking, license checking, and 

attach sources in jar.

  mvn -Dsource.skip=true -Dmaven.test.skip=true -DskipTests -Dmaven.javadoc.skip=true -Danimal.sniffer.skip=true -Dlicense.skip=true install

How show the list of files that have problems with the header.

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You can use the mave plugin "license" to check the headers of the files in

the project. Use::

How to skip license check from command line

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If in the project is enabled by default the checking of the headers

of files, you can skip this setting the property "license.skip" to

true in the command line::

How to skip attach sources in jar from command line

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If in the project is enabled by default the generation of jar whith 

the sources of the project, you can disable this setting the property

"source.skip" to true in the command line::

How to skip test compile from command line

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You can skip the compilation of test setting the propety "maven.test.skip" 

to true in the command line::

How to skip test execution from command line

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You can skip the tests execution setting the propety "skipTests" to true

in the command line::

How to skip javadoc generation from command line

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You can skip the javadoc generation setting the property

"maven.javadoc.skip" to true in the command line::

How to skip test signature cheks from command line

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You can skip the signature check setting the property

"animal.sniffer.skip" to true in the command line::

How to install a project without install submodules

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To install a project with submodules and only install the

parent project without submodules use the option "--non-recursive" ::

How to check and fix the header of source files.

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You can check the headers of the files in you project 

using the goal "license". To check the header use::

  mvn license:check

To fix the header use::

  mvn license:format

How to skip test compilation

--------------------------------

To configure a project to don't run the compilation

of test you can add to this pom the next configuration of

the plugin "maven-compiler-plugin"::

  <build>

    <plugins>

      ...

      <plugin>

        <!-- Skip compilation tests -->

        <groupId>org.apache.maven.plugins</groupId>

        <artifactId>maven-compiler-plugin</artifactId>

        <executions>

          <execution>

            <id>default-testCompile</id>

            <phase>process-test-sources</phase>

            <goals>

              <goal>testCompile</goal>

            </goals>

            <configuration>

              <skip>true</skip>

            </configuration>

          </execution>

        </executions>

      </plugin>

      ...

    </plugins>

  </build>

Skip test execution

----------------------

To configure a project to don't run the execution

of test you can add to this pom the next configuration of

the plugin "maven-surefire-plugin"::

  <build>

    <plugins>

      ...

      <plugin>

        <!-- Skip test execution -->

        <groupId>org.apache.maven.plugins</groupId>

        <artifactId>maven-surefire-plugin</artifactId>

        <configuration>

          <skipTests>true</skipTests>

        </configuration>

      </plugin>

      ...

    </plugins>

  </build>

Continue on test failure

-----------------------------

You can configure a project to continue on test execution 

failure. To do this add to the pom of the project the next 

configuration of plugin "maven-surefire-plugin" ::

  <build>

    <plugins>

      ...

      <plugin>

        <!-- Continue on test failure -->

        <groupId>org.apache.maven.plugins</groupId>

        <artifactId>maven-surefire-plugin</artifactId>

        <configuration>

          <testFailureIgnore>true</testFailureIgnore>

        </configuration>

      </plugin>

      ...

    </plugins>

  </build>

Set java compatibility

--------------------------

To set the compatibility with a java version  add to the 

pom of the project the next configuration of plugin 

"maven-compiler-plugin" ::

  <build>

    <plugins>

      ...

      <plugin>

          <!-- Set java compatibility -->

          <artifactId>maven-compiler-plugin</artifactId>

              <source>1.5</source>

              <target>1.5</target>

              <encoding>ISO-8859-1</encoding>

      </plugin>

      ...

    </plugins>

  </build>

Packaging tests in jar

------------------------

Test classes do not packaging in jar by default.

To packing add to pom::

  <build>

    <plugins>

      ...

      <plugin>

        <!-- Packaging tests in jar -->

        <groupId>org.apache.maven.plugins</groupId>

        <artifactId>maven-jar-plugin</artifactId>

        <executions>

          <!-- Generates a jar file only with the test classes -->

          <execution>

            <goals>

              <goal>test-jar</goal>

            </goals>

              <includes>

                <include>**/**</include>

              </includes>

          </execution>

        </executions>

      </plugin> 

      ...

    </plugins>

  </build>

How to set a dependency with tests jar

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You can set a dependency with a test jar adding to

the declaration of the dependency the scope of

test and the type of "test-jar"::

  <dependency>

      <groupId>...</groupId>

      <artifactId>...</artifactId>

      <type>test-jar</type>

      <scope>test</scope>

  </dependency>

How use ant in maven

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You can use ant embed in the pom of you project.

To do this use::

  <plugin>

    <artifactId>maven-antrun-plugin</artifactId>

    <version>1.7</version>

    <executions>

      <execution>

        <phase>generate-sources</phase>

        <configuration>

          <target>

            <echo>Hello world!</echo>

          </target>

        </configuration>

        <goals>

          <goal>run</goal>

        </goals>

      </execution>

    </executions>

  </plugin>

Fail when execute "mvn deploy" with "No connector available"

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When execute a "mvn deploy" fail with the error::

  [INFO] ------------------------------------------------------------------------

  [ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:deploy 

    (default-deploy) on project org.gvsig.desktop: Failed to deploy artifacts/metadata: 

    No connector available to access repository gvsig-repository (dav:https://devel.gvsig.org/m2repo/j2se) 

    of type default using the available factories WagonRepositoryConnectorFactory -> [Help 1]

  [ERROR] 

This happens to be configured the webdav wagon as an extension in the section "build"::

  ...

  <build>

    <extensions>

        <extension>

            <groupId>org.apache.maven.wagon</groupId>

            <artifactId>wagon-webdav-jackrabbit</artifactId>

            <version>1.0-beta-7</version>

        </extension>

    </extensions>

  ...

Fail when execute "mvn release: prepare" with "svn command failed... Could not authenticate"

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When running "mvn release: prepare" updates poms, compiles, and then

fails with the following error ::

  [INFO] ------------------------------------------------------------------------

  [ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.1:prepare 

    (default-cli) on project org.gvsig.desktop: Unable to commit files

  [ERROR] Provider message:

  [ERROR] The svn command failed.

  [ERROR] Command output:

  [ERROR] svn: Commit failed (details follow):

  [ERROR] svn: MKACTIVITY of '/svn/gvsig-desktop/!svn/act/931a27bc-57e8-45d9-adcd-5a2cf54a7045': 

    authorization failed: Could not authenticate to server: rejected Basic challenge (https://devel.gvsig.org)

  [ERROR] -> [Help 1]

  [ERROR] 

  [ERROR]

Apparently maven in linux system use the svn of system and if you're not

authenticated when trying to access to the repository, svn fails.

This is solved by executing a commit from the command line on

some file of the project (only if you have not enabled the option 

"store-passwords = no" in $ HOME / .subversion / config). For example, you 

can add or remove at the end of "pom.xml" a blank line and then run 

from the command line ::

  svn ci -m "" pom.xml