Examples of IExtensionRegistry

org.eclipse.core.runtime.IExtensionRegistry
The extension registry holds the master list of all discovered namespaces, extension points and extensions.
The extension registry can be queried, by name, for extension points and extensions.

The various objects that describe the contents of the extension registry ( {@link IExtensionPoint}, {@link IExtension}, and {@link IConfigurationElement}) are intended for relatively short-term use. Clients that deal with these objects must be aware that they may become invalid if the declaring plug-in is updated or uninstalled. If this happens, all methods on these object except isValid() will throw {@link org.eclipse.core.runtime.InvalidRegistryObjectException}. Code in a plug-in that has declared that it is not dynamic aware (or not declared anything) can safely ignore this issue, since the registry would not be modified while it is active. However, code in a plug-in that declares that it is dynamic aware must be careful if it accesses extension registry objects, because it's at risk if plug-in are removed. Similarly, tools that analyze or display the extension registry are vulnerable. Client code can pre-test for invalid objects by calling isValid(), which never throws this exception. However, pre-tests are usually not sufficient because of the possibility of the extension registry object becoming invalid as a result of a concurrent activity. At-risk clients must treat InvalidRegistryObjectException as if it were a checked exception. Also, such clients should probably register a listener with the extension registry so that they receive notification of any changes to the registry.

Extensions and extension points are declared by generic entities called namespaces. The only fact known about namespaces is that they have unique string-based identifiers. One example of a namespace is a plug-in, for which the namespace id is the plug-in id.
This interface can be used without OSGi running.
This interface is not intended to be implemented by clients.
@since 3.0

Examples of org.eclipse.core.runtime.IExtensionRegistry

    }
  }


  /* Load Credentials Provider contribution */
  private void loadCredentialsProvider() {
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(CREDPROVIDER_EXTENSION_POINT);
    for (IConfigurationElement element : elements) {
      try {
        String protocol = element.getAttribute("protocol"); //$NON-NLS-1$


        /* Let 3d-Party contributions override our contributions */

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Examples of org.eclipse.core.runtime.IExtensionRegistry

  }


  /* Init scoped preferences */
  private void initScopedPreferences() {
    /* Pass Service through Initializers */
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(PREFERENCES_INITIALIZER_EXTENSION_POINT);
    for (IConfigurationElement element : elements) {
      try {
        IPreferencesInitializer initializer = (IPreferencesInitializer) element.createExecutableExtension("class"); //$NON-NLS-1$
        initializer.initialize(fDefaultScope);
      } catch (CoreException e) {

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Examples of org.eclipse.core.runtime.IExtensionRegistry

  }


  private List<EntityPropertyPageWrapper> loadEntityPropertyPages() {
    List<EntityPropertyPageWrapper> pages = new ArrayList<EntityPropertyPageWrapper>();


    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(ENTITY_PROPERTY_PAGE_EXTENSION_POINT);


    /* For each contributed property Page */
    for (IConfigurationElement element : elements) {
      try {
        String id = element.getAttribute("id"); //$NON-NLS-1$

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Examples of org.eclipse.core.runtime.IExtensionRegistry

    /* Load Feed Search Provider */
    fFeedSearchUrl = loadFeedSearchUrl();
  }


  private void loadShareProviders() {
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(SHARE_PROVIDER_EXTENSION_POINT);


    /* For each contributed property keyword feed */
    for (int i = 0; i < elements.length; i++) {
      IConfigurationElement element = elements[i];

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Examples of org.eclipse.core.runtime.IExtensionRegistry

    }
  }


  private String loadFeedSearchUrl() {
    String feedSearch = null;
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(FEED_SEARCH_EXTENSION_POINT);
    for (IConfigurationElement element : elements) {
      try {
        feedSearch = element.getAttribute("searchUrl"); //$NON-NLS-1$


        /* Let 3d-Party contributions override our contributions */

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Examples of org.eclipse.core.runtime.IExtensionRegistry


  /* Init scoped preferences */
  private void initScopedPreferences() {


    /* Pass Service through Initializers */
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(PREFERENCES_INITIALIZER_EXTENSION_POINT);
    for (IConfigurationElement element : elements) {
      try {
        IPreferencesInitializer initializer = (IPreferencesInitializer) element.createExecutableExtension("class"); //$NON-NLS-1$
        initializer.initialize(fDefaultScope);
      } catch (CoreException e) {

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Examples of org.eclipse.core.runtime.IExtensionRegistry

    /* Load Element Handlers */
    loadElementHandlers();
  }


  private void loadNamespaceHandlers() {
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(NSHANDLER_EXTENSION_POINT);


    for (IConfigurationElement element : elements) {
      try {
        String namespaceUri = element.getAttribute("namespaceURI"); //$NON-NLS-1$

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Examples of org.eclipse.core.runtime.IExtensionRegistry

      }
    }
  }


  private void loadElementHandlers() {
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(ELHANDLER_EXTENSION_POINT);


    if (elements.length > 0)
      fElementHandlers = new HashMap<String, IElementHandler>();


    for (IConfigurationElement element : elements) {

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Examples of org.eclipse.core.runtime.IExtensionRegistry

      }
    }
  }


  private void loadFormatInterpreters() {
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(FORMATINTERPRETER_EXTENSION_POINT);


    for (IConfigurationElement element : elements) {
      try {
        String format = element.getAttribute("rootElement").toLowerCase(); //$NON-NLS-1$

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Examples of org.eclipse.core.runtime.IExtensionRegistry

      }
    }
  }


  private void loadTypeImporters() {
    IExtensionRegistry reg = Platform.getExtensionRegistry();
    IConfigurationElement elements[] = reg.getConfigurationElementsFor(TYPEIMPORTER_EXTENSION_POINT);


    for (IConfigurationElement element : elements) {
      try {
        String format = element.getAttribute("rootElement").toLowerCase(); //$NON-NLS-1$

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