private void replaceTagLibraries()

in maven-jdev-plugin/src/main/java/org/apache/myfaces/trinidadbuild/plugin/jdeveloper/JDeveloperMojo.java [1116:1271]
82 lines of code
10 McCabe index (conditional complexity)

  private void replaceTagLibraries(Xpp3Dom projectDOM)
    throws XmlPullParserException
  {
    // This boolean is set by specifying the jdev.plugin.add.taglibs
    // property at the top of a project's pom file.  There are projects
    // that don't need taglibs in their .jpr files to compile and this
    // allows them to be excluded.
    if (!_addTagLibs)
      return;

    // /jpr:project
    //   /hash[@n="oracle.jdevimpl.webapp.jsp.libraries.model.ProjectTagLibraries"]
    //       /list[@n="tag-libaries"]
    Xpp3Dom projectTagsDOM =
      findNamedChild(projectDOM, "hash", "oracle.jdevimpl.webapp.jsp.libraries.model.ProjectTagLibraries");
    Xpp3Dom tagLibsDOM =
      findNamedChild(projectTagsDOM, "list", "tag-libraries");

    Xpp3Dom targetLibsDOM = new Xpp3Dom("list");

    //
    // tagLibraryDefinitions
    //
    //<hash>
    //  <hash n="baseLibrary">
    //    <value n="name" v="JSF HTML"></value>
    //    <value n="version" v="1.2"></value>
    //  </hash>
    //  <value n="jspVersion" v="2.1"></value>
    //  <value n="name" v="JSF HTML"></value>
    //
    //  <value n="tldURL" v="@oracle.home@/jdeveloper/modules/oracle.jsf_1.2.9/glassfish.jsf_1.2.9.0.jar!/META-INF"></value>        
    //  <value n="URI" v="http://java.sun.com/jsf/html"></value>
    //  <value n="version" v="1.2"></value>
    //</hash>
    //

    // Parent "hash"
    Xpp3Dom hashDOM = null;

    // <value...
    Xpp3Dom valueDOM = null;

    if (distributedTagLibraries != null &&
        distributedTagLibraries.length > 0)
    {
      // Process each distributed Tag Library
      for (int i = 0; i < distributedTagLibraries.length; i++)
      {
        Properties disTagLib = distributedTagLibraries[i];
        String nameName = null;
        String nameValue = null;
        String versionName = null;
        String versionValue = null;

        // Create parent hash for each taglib
        hashDOM = new Xpp3Dom("hash");

        // baseLibrary "hash" for each taglib
        Xpp3Dom hashBaseDOM = new Xpp3Dom("hash");
        hashBaseDOM.setAttribute("n", "baseLibrary");
        // Add baseLibrary hash to parent hash
        hashDOM.addChild(hashBaseDOM);

        // Process each property of the taglib
        for (Enumeration keys = disTagLib.propertyNames();
             keys.hasMoreElements(); )
        {
          // Get the name value pair
          String name = (String) keys.nextElement();
          String value = (String) disTagLib.get(name);

          // Put the name and version values
          // inside the baseLibrary hash.
          // This only happens once per taglib
          if ("name".equals(name))
          {
            nameName = name;
            nameValue = value;

            // n="name, v=<name of taglib> in baseLibrary
            valueDOM = new Xpp3Dom("value");
            valueDOM.setAttribute("n", name);
            valueDOM.setAttribute("v", value);
            hashBaseDOM.addChild(valueDOM);

            // Duplicate the "name"  <value...
            // outside of the baseLibrary
            // n="name, v=<name of taglib> in parent hash
            valueDOM = new Xpp3Dom("value");
            valueDOM.setAttribute("n", nameName);
            valueDOM.setAttribute("v", nameValue);
            hashDOM.addChild(valueDOM);
          }
          else if ("version".equals(name))
          {
            versionName = name;
            versionValue = value;

            // n="version" v=<taglib version> in baseLibrary
            valueDOM = new Xpp3Dom("value");
            valueDOM.setAttribute("n", name);
            valueDOM.setAttribute("v", value);
            hashBaseDOM.addChild(valueDOM);

            // Duplicate the "version" <value...
            // outside of the baseLibrary
            // n="version" v=<taglib version> in parent hash
            valueDOM = new Xpp3Dom("value");
            valueDOM.setAttribute("n", versionName);
            valueDOM.setAttribute("v", versionValue);
            hashDOM.addChild(valueDOM);
          }
          else
          {
            if ("tld".equals(name))
            {
              // Did not want to have a URL in the pom file.
              // I just wanted the user to specify the name
              // of the tld file.  So we fix it for JDev
              // here.
              name += "URL";
              value = tagLibDirectory + "/" + value;
            }
            valueDOM = new Xpp3Dom("value");
            valueDOM.setAttribute("n", name);
            valueDOM.setAttribute("v", value);
            hashDOM.addChild(valueDOM);
          }
        } //endfor processing each property

        // We are done with this disTagLib
        // Add it to the targetLibsDOM
        if (hashDOM != null)
          targetLibsDOM.addChild(hashDOM);
      } // endfor processing each distributed tag lib
    } //endif
    else
    {
      // Use Default tag library configuration.  See comment before
      // replaceTagLibraries.
      replaceDefaultTagLibraries(projectDOM, targetLibsDOM);
    }

    // Generate .jpr entries from the .tld files in the project's
    // src/main/webapp/WEB-INF directory.
    replaceLocalTagLibraries(targetLibsDOM);

    // First, add JSP Runtime dependency if src/main/webapp exists
    // TODO: use a better merge algorithm
    removeChildren(tagLibsDOM);

    // make sure to pass Boolean.FALSE to allow
    // multiple child elements with the same name
    Xpp3Dom.mergeXpp3Dom(tagLibsDOM, targetLibsDOM, Boolean.FALSE);
  }