Examples of PluginResourceLoader

org.apache.nutch.webapp.common.PluginResourceLoader

PluginResourceLoader is capable of loading plugged in resources.

org.pentaho.platform.plugin.services.pluginmgr.PluginResourceLoader

The default implementation of the {@link IPluginResourceLoader}. Obtains resources by searching the root directory of a {@link PluginClassLoader}.

Resource discovery

{@link PluginResourceLoader} will search the following places for plugin classes:

the /lib folder under the plugin's root directory, e.g. "myplugin/lib"

{@link PluginResourceLoader} will search for non-class resources in several locations:

inside jar files located in the lib directory
from the filesystem relative to the root directory of the plugin

resourcePath

This class requires resource paths to be the relative paths to plugin resources, relative the root directory of the plugin. A resource path can be specified either using '/' or '.' (or both) in the path, depending on the particular method you are using. It is usually best to specify the path using '/' since both the filesystem and the classloader can handle this delimiter, whereas '.' will not be handled correctly if you are trying to load a resource from the filesystem.

Plugin Settings

This class backs the plugin settings APIs with the PentahoSystem settings service. See {@link PentahoSystem#getSystemSetting(String,String)} and {@link ISystemSettings}. System settings are expected in a file named settings.xml in the root of the plugin directory. @author aphillips


    xmlParser.setValidating(config.getParserValidate());
    XmlDefinitionsSet definitions = getDefinitions();
    ClassLoader current = Thread.currentThread().getContextClassLoader();


    PluginResourceLoader loader = ServletContextServiceLocator.getInstance(
        servletContext).getPluginResourceLoader(current);


    Thread.currentThread().setContextClassLoader(loader);
    initDefinitions(definitions);
    Thread.currentThread().setContextClassLoader(current);


  private PluginClassLoader classLoader;


  @Before
  public void init() throws ClassNotFoundException {
    resLoader = new PluginResourceLoader();
    classLoader =
        new PluginClassLoader( new File( "./test-res/PluginResourceLoaderTest" ), getClass().getClassLoader() );
    pluginClass = classLoader.loadClass( "PluginResLoaderDummyClass" );
  }


  @Before
  public void beforeTest() throws Exception {
    repositoryBase.setUp();
    repositoryBase.getMp().define( IPluginManager.class, DefaultPluginManager.class, Scope.GLOBAL );
    repositoryBase.getMp().defineInstance( IPluginResourceLoader.class, new PluginResourceLoader() {
      protected PluginClassLoader getOverrideClassloader() {
        return new PluginClassLoader( new File( "test-res/PluginResourceTest/system/test-plugin" ), this );
      }
    } );
    repositoryBase.getMp().define( IPluginProvider.class, TestPlugin.class, Scope.GLOBAL );

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