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| --><document xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/XDOC/2.0" xsi:schemaLocation="http://maven.apache.org/XDOC/2.0 http://maven.apache.org/xsd/xdoc-2.0.xsd"><properties><title>Cocoon Main Site - How to solve Maven 2 problems</title><author email="cocoon-docs@apache.org">Apache Cocoon Documentation Team</author></properties><body> |
| <div id="contentBody"><div id="bodyText"><h1 class="docTitle">How to solve Maven 2 problems</h1><p>If you have problems to build Cocoon with Maven 2, please follow these |
| instructions. If they don't solve your problem, report your problems to |
| <a href="http://issues.apache.org/jira/browse/COCOON">http://issues.apache.org/jira/browse/COCOON</a>. |
| An error report should contain your Maven version (<tt>mvn --version</tt>), the |
| revision number of you working copy of Cocoon and the complete error report |
| (e.g. <tt>mvn install -X -e</tt>).</p><section name="Cleanup your local repository" style="background:none;padding:0;"/><p>It helps to zap your local repo every now and then. There is no way as of yet |
| to force maven to redownload poms it has already (MNG-1258). |
| Poms<strong> are</strong> being updated without version number increment even |
| though they shouldn't. If the problem might exist with Cocoon artifacts only, |
| removing [local-maven-repository]/org/apache/cocooon should be enough.</p><p>Maven repository usually is located in the folder:</p><pre>[Win] C:\Documents and Settings\<Your Login Name>\.m2\repository |
| [Unix] ~/.m2/repository |
| </pre><p>or different locations can be configured in <tt>~/.m2/settings.xml.</tt></p><section name="Remove a configured Mirror" style="background:none;padding:0;"/><p>If you're using a mirror (see the section below where to look for the |
| configuration) try removing it. The Maven central repository at |
| http://repo1.maven.org is the most reliable one and should be fast enough in the |
| meantime.</p><section name="Configure a mirror" style="background:none;padding:0;"/><p>Maven relys on public repositories. From time to time they are not accessible |
| mostly because of heavy load. To solve this problem, use one of the mirrors in |
| <tt>~/.m2/settings.xml</tt>:</p><pre><settings> |
| <mirrors> |
| <mirror> |
| <mirrorOf>central</mirrorOf> |
| <id>ibiblioEuropeanMirror</id> |
| <url>http://mirrors.dotsrc.org/maven2</url> |
| </mirror> |
| <!-- |
| <mirror> |
| <mirrorOf>central</mirrorOf> |
| <id>ibiblioAustralianMirror</id> |
| <url>http://public.planetmirror.com/pub/maven2</url> |
| </mirror> |
| --> |
| </mirrors> |
| </settings></pre><p>For more information check the page on |
| <a href="http://maven.apache.org/guides/mini/guide-mirror-settings.html">configuring |
| mirrors</a>.</p><h1>Common Maven errors</h1><section name="java.lang.OutOfMemoryError: Java heap space" style="background:none;padding:0;"/><p>It occurs when you try whole Cocoon sources, especially |
| <a href="2.2/blocks/1.0/1252_1_1.html">serializers block</a>. The problem lays in code of this |
| block that demands more than 64mb of memory in order to compile. Solution is |
| simple - give Maven more memory by setting environment variable:</p><pre>[Win] set MAVEN_OPTS=-Xmx256m |
| [Unix] MAVEN_OPTS='-Xmx256m' |
| </pre><p>And then fire your <tt>mvn</tt> command as before. It should work now.</p><h1>And when your build works</h1><section name="Run Maven in offline mode" style="background:none;padding:0;"/><p>You shouldn't get any problems anymore as long as you don't update your |
| local repo. To switch on the offline mode, append the -o parameter. e.g.</p><pre>mvn clean -o</pre><section name="Setup a company internal proxy repository" style="background:none;padding:0;"/><p>If you don't want to rely on external repositories, you can setup a company |
| internal <a href="http://maven-proxy.codehaus.org/">proxy repository</a>. The |
| Codehaus wiki contains |
| <a href="http://docs.codehaus.org/display/MAVENUSER/Creating+a+Maven+proxy">more |
| information</a> about the setup process</p></div></div> |
| </body></document> |
