Examples of org.eclipse.core.runtime.Plugin

org.eclipse.core.runtime.Plugin
other initialization } // ... other methods } In the above example, a call to MyPluginClass.getInstance() will always return an initialized instance of MyPluginClass.

Constructors and life cycle methods
If the plugin.xml of a plug-in indicates <?eclipse version="3.0"?> and its prerequisite list includes org.eclipse.core.runtime, the default constructor of the plug-in class is used and {@link #start(BundleContext)} and {@link #stop(BundleContext)} arecalled as life cycle methods.
If the plugin.xml of a plug-in indicates <?eclipse version="3.0"?> and its prerequisite list includes org.eclipse.core.runtime.compatibility, the {@link #Plugin(IPluginDescriptor)}constructor is used and {@link #startup()} and {@link #shutdown()} are called as life cycle methods.Note that in this situation, start() is called before startup() and stop() is called after shutdown.
If the plugin.xml of your plug-in does not indicate <?eclipse version="3.0"?> it is therefore not a 3.0 plug-in. Consequently the {@link #Plugin(IPluginDescriptor)} is used and {@link #startup()} and {@link #shutdown()} are called as life cycle methods.
Since Eclipse 3.0 APIs of the Plugin class can be called only when the Plugin is in an active state, i.e., after it was started up and before it is shutdown. In particular, it means that Plugin APIs should not be called from overrides of {@link #Plugin()}.

    File rssowlExe = getRSSOwlExecutable();
    if (rssowlExe == null)
      return;


    /* Locate Executables in Workspace or copy over if not existing */
    Plugin bundle = Activator.getDefault();
    if (bundle == null)
      return;


    File checkRegistryExe = getOrCreateFromStateLocation(CHECK_REGISTRY_EXE, bundle);
    File registerAppExe = getOrCreateFromStateLocation(REGISTER_RSSOWL_EXE, bundle);

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                null);
        }
        File libDir = new File(libURL.toString());
        IClasspathEntry[] jettyJarPaths = getJarPaths(libDir);
        IClasspathEntry[] apacheJarPaths = new IClasspathEntry[0];
        Plugin tomcatPlugin = Platform.getPlugin("org.eclipse.tomcat");
        if (tomcatPlugin != null)
        {
            IPluginDescriptor descriptor = tomcatPlugin.getDescriptor();
            apacheJarPaths = getLibrariesPaths(descriptor, "org.apache.jasper");
        }
        return LibraryHelper.concatenateEntries(jettyJarPaths, apacheJarPaths);
    }

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    }
    return initializer;
  }


  private static ClasspathContainerInitializer computeClasspathContainerInitializer(String containerID) {
    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPCONTAINER_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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    if (variablePath != null && variablePath != JavaModelManager.VARIABLE_INITIALIZATION_IN_PROGRESS) {
      return null;
    }


    // Search for extension point to get the possible deprecation message
    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPVARIABLE_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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   * none was found.
   * @since 2.1
    */
  public static ClasspathVariableInitializer getClasspathVariableInitializer(String variable){


    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPVARIABLE_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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   *
   * @param target the target preference store
   * @param targetKey the key to be used in the target preference store
   */
  public static void startPropagate(IPreferenceStore target, String targetKey) {
    Plugin plugin= Platform.getPlugin("org.eclipse.ui.workbench"); //$NON-NLS-1$
    if (plugin instanceof AbstractUIPlugin) {
      AbstractUIPlugin uiPlugin= (AbstractUIPlugin) plugin;
      IPreferenceStore store= uiPlugin.getPreferenceStore();
      if (store != null)
        PropagatingFontFieldEditor.startPropagate(store, JFaceResources.TEXT_FONT, target, targetKey);

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    }
    return initializer;
  }


  private static ClasspathContainerInitializer computeClasspathContainerInitializer(String containerID) {
    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPCONTAINER_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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    if (variablePath != null && variablePath != JavaModelManager.VARIABLE_INITIALIZATION_IN_PROGRESS) {
      return null;
    }


    // Search for extension point to get the possible deprecation message
    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPVARIABLE_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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   * none was found.
   * @since 2.1
    */
  public static ClasspathVariableInitializer getClasspathVariableInitializer(String variable){


    Plugin jdtCorePlugin = JavaCore.getPlugin();
    if (jdtCorePlugin == null) return null;


    IExtensionPoint extension = Platform.getExtensionRegistry().getExtensionPoint(JavaCore.PLUGIN_ID, JavaModelManager.CPVARIABLE_INITIALIZER_EXTPOINT_ID);
    if (extension != null) {
      IExtension[] extensions =  extension.getExtensions();

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