diff options
Diffstat (limited to 'bundles/org.eclipse.equinox.registry/src/org/eclipse/core/internal/adapter/AdapterFactoryProxy.java')
| -rw-r--r-- | bundles/org.eclipse.equinox.registry/src/org/eclipse/core/internal/adapter/AdapterFactoryProxy.java | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/bundles/org.eclipse.equinox.registry/src/org/eclipse/core/internal/adapter/AdapterFactoryProxy.java b/bundles/org.eclipse.equinox.registry/src/org/eclipse/core/internal/adapter/AdapterFactoryProxy.java deleted file mode 100644 index 06982776b..000000000 --- a/bundles/org.eclipse.equinox.registry/src/org/eclipse/core/internal/adapter/AdapterFactoryProxy.java +++ /dev/null @@ -1,151 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2004, 2008 IBM Corporation and others. All rights reserved. - * This program and the accompanying materials are made available under the - * terms of the Eclipse Public License v1.0 which accompanies this distribution, - * and is available at http://www.eclipse.org/legal/epl-v10.html - * - * Contributors: IBM - Initial API and implementation - ******************************************************************************/ -package org.eclipse.core.internal.adapter; - -import java.util.ArrayList; -import org.eclipse.core.internal.registry.Handle; -import org.eclipse.core.internal.registry.RegistryMessages; -import org.eclipse.core.internal.runtime.IAdapterFactoryExt; -import org.eclipse.core.internal.runtime.RuntimeLog; -import org.eclipse.core.runtime.*; -import org.eclipse.osgi.util.NLS; - -/** - * Instances of this class represent adapter factories that have been - * contributed via the adapters extension point. The concrete factory is not - * loaded until the factory's plugin is loaded, AND until the factory is - * requested to supply an adapter. - */ -class AdapterFactoryProxy implements IAdapterFactory, IAdapterFactoryExt { - private IConfigurationElement element; - /** - * The real factory. Null until the factory is loaded. - */ - private IAdapterFactory factory; - private boolean factoryLoaded = false; - /** - * Store Id of the declaring extension. We might need it in case - * the owner goes away (in this case element becomes invalid). - */ - private String ownerId; - - private int internalOwnerID = -1; - - /** - * Creates a new factory proxy based on the given configuration element. - * Returns the new proxy, or null if the element could not be created. - */ - public static AdapterFactoryProxy createProxy(IConfigurationElement element) { - AdapterFactoryProxy result = new AdapterFactoryProxy(); - result.element = element; - IExtension extension = element.getDeclaringExtension(); - result.ownerId = extension.getUniqueIdentifier(); - if (extension instanceof Handle) - result.internalOwnerID = ((Handle) extension).getId(); - if ("factory".equals(element.getName())) //$NON-NLS-1$ - return result; - result.logError(); - return null; - } - - public boolean originatesFrom(IExtension extension) { - String id = extension.getUniqueIdentifier(); - if (id != null) // match by public ID declared in XML - return id.equals(ownerId); - - if (!(extension instanceof Handle)) - return false; // should never happen - - return (internalOwnerID == ((Handle) extension).getId()); - } - - String getAdaptableType() { - //cannot return null because it can cause startup failure - String result = element.getAttribute("adaptableType"); //$NON-NLS-1$ - if (result != null) - return result; - logError(); - return ""; //$NON-NLS-1$ - } - - public Object getAdapter(Object adaptableObject, Class adapterType) { - if (!factoryLoaded) - loadFactory(false); - return factory == null ? null : factory.getAdapter(adaptableObject, adapterType); - } - - public Class[] getAdapterList() { - if (!factoryLoaded) - loadFactory(false); - return factory == null ? null : factory.getAdapterList(); - } - - public String[] getAdapterNames() { - IConfigurationElement[] children = element.getChildren(); - ArrayList adapters = new ArrayList(children.length); - for (int i = 0; i < children.length; i++) { - //ignore unknown children for forward compatibility - if ("adapter".equals(children[i].getName())) { //$NON-NLS-1$ - String type = children[i].getAttribute("type"); //$NON-NLS-1$ - if (type != null) - adapters.add(type); - } - } - if (adapters.isEmpty()) - logError(); - return (String[]) adapters.toArray(new String[adapters.size()]); - } - - IExtension getExtension() { - return element.getDeclaringExtension(); - } - - /** - * Loads the real adapter factory, but only if its associated plug-in is - * already loaded. Returns the real factory if it was successfully loaded. - * @param force if <code>true</code> the plugin providing the - * factory will be loaded if necessary, otherwise no plugin activations - * will occur. - */ - public synchronized IAdapterFactory loadFactory(boolean force) { - if (factory != null || factoryLoaded) - return factory; - String contributorName = element.getContributor().getName(); - boolean isActive; - // Different VMs have different degrees of "laziness" for the class loading. - // To make sure that VM won't try to load EquinoxUtils before getting into - // this try-catch block, the fully qualified name is used (removing entry for - // the EquinoxUtils from the import list). - try { - isActive = org.eclipse.core.internal.registry.osgi.EquinoxUtils.isActive(contributorName); - } catch (NoClassDefFoundError noClass) { - // This block will only be triggered if VM loads classes in a very "eager" way. - isActive = true; - } - if (!force && !isActive) - return null; - //set to true to prevent repeated attempts to load a broken factory - factoryLoaded = true; - try { - factory = (IAdapterFactory) element.createExecutableExtension("class"); //$NON-NLS-1$ - } catch (CoreException e) { - String msg = NLS.bind(RegistryMessages.adapters_cantInstansiate, getAdaptableType(), element.getContributor().getName()); - RuntimeLog.log(new Status(IStatus.ERROR, RegistryMessages.OWNER_NAME, 0, msg, e)); - } - return factory; - } - - /** - * The factory extension was malformed. Log an appropriate exception - */ - private void logError() { - String msg = NLS.bind(RegistryMessages.adapters_badAdapterFactory, element.getContributor().getName()); - RuntimeLog.log(new Status(IStatus.ERROR, RegistryMessages.OWNER_NAME, 0, msg, null)); - } -} |