as a servlet container), but still allow each web application to provide its own LogFactory implementation, if it so desires. An instance of this class will then be created, and cached per class loader. The Default LogFactory Implementation The Logging Package APIs include a default LogFactory implementation class ( org.apache.commons.logging.impl.LogFactoryImpl) that is selected if no other implementation class name can be discovered. Its primary purpose is to create (as necessary) and return Log...

information for this default implementation. Configuring the Underlying Logging System The basic principle is that the user is totally responsible for the configuration of the underlying logging system. Commons-logging should not change the existing configuration. Each individual Log implementation may support its own configuration properties. These will be documented in the class descriptions for the corresponding implementation class. Finally, some Log implementations (such as the one for Log4J)...

 * plugins should always acquire model builder instances via dependency injection. Developers might want to subclass
 * this factory to provide custom implementations for some of the components used by the model builder, or use the
 * builder API to inject custom instances.
 *
 */
public class DefaultModelBuilderFactory {

    private ModelProcessor modelProcessor;

    }

    @Nonnull
    @Override
    public Collection<Listener> getListeners() {
        return Collections.unmodifiableCollection(listeners);
    }

    //
    // Shortcut implementations
    //

    /**
     * Shortcut for <code>getService(RepositoryFactory.class).createLocal(...)</code>
     *
     * @see RepositoryFactory#createLocal(Path)
     */
    @Override

     *
     * @param parser The XML parser
     * @return Name of the custom implementation; otherwise {@code null}
     */
    private static String parseImplementation(final XmlPullParser parser) {
        return parser.getAttributeValue(null, "implementation");
    }

    /**
     * Attempts to load the named implementation, uses default implementation if no name is given.

controlled from the declarative file. Maven can be extended by plugins to utilise a number of other d evelopment tools for reporting or the build process. Specification-Vendor: Apache Software Foundation Implementation-Vendor: Apache Software Foundation Implementation-Title: maven-plugin-api Implementation-Version: 2.0 org/apache/maven/plugin/AbstractMojo.class package org.apache.maven.plugin; public abstract synchronized class AbstractMojo implements Mojo, ContextEnabled { private logging.Log log; private...

        MojoDescriptor mojo = new MojoDescriptor();
        mojo.setPluginDescriptor(pluginDescriptor);

        mojo.setGoal(c.getChild("goal").getValue());

        mojo.setImplementation(c.getChild("implementation").getValue());

        PlexusConfiguration langConfig = c.getChild("language");

        if (langConfig != null) {
            mojo.setLanguage(langConfig.getValue());
        }

          <description>
            The configurator type to use when injecting parameter values into this Mojo. The value is normally deduced
            from the Mojo's implementation language, but can be specified to allow a custom ComponentConfigurator
            implementation to be used.
          </description>
        </field>
        <field>
          <name>composer</name>
          <version>1.0.0/1.1.0</version>

                    String parameterForImplementation = parameter.getImplementation();
                    if ((attributeForImplementation == null || attributeForImplementation.isEmpty())
                            && ((parameterForImplementation != null) && !parameterForImplementation.isEmpty())) {
                        attributes.put("implementation", parameter.getImplementation());

        if (parameters.contains(parameter)) {
            throw new DuplicateParameterException(parameter.getName()
                    + " has been declared multiple times in mojo with goal: " + getGoal() + " (implementation: "
                    + getImplementation() + ")");
        }

        parameters.add(parameter);
    }

    /**