| /******************************************************************************* |
| * Copyright (c) 2011 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 Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.xml.core.internal.contentmodel.modelqueryimpl; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.wst.xml.core.internal.Logger; |
| import org.eclipse.wst.xml.core.internal.contentmodel.modelquery.IExternalSchemaLocationProvider; |
| |
| /** |
| * A registry for all external schema location providers. |
| * |
| */ |
| public class ExternalSchemaLocationProviderRegistry { |
| |
| private static ExternalSchemaLocationProviderRegistry fRegistry; |
| private IExternalSchemaLocationProvider[] fProviders; |
| |
| private ExternalSchemaLocationProviderRegistry() { |
| fProviders = new IExternalSchemaLocationProvider[0]; |
| IConfigurationElement[] elements = Platform.getExtensionRegistry().getConfigurationElementsFor("org.eclipse.wst.xml.core", "externalSchemaLocations"); //$NON-NLS-1$ //$NON-NLS-2$ |
| List providers = new ArrayList(elements.length); |
| try { |
| for (int i = 0; i < elements.length; i++) { |
| providers.add(elements[i].createExecutableExtension("class")); |
| } |
| } |
| catch (CoreException e) { |
| Logger.logException(e); |
| } |
| fProviders = new IExternalSchemaLocationProvider[elements.length]; |
| providers.toArray(fProviders); |
| } |
| |
| public IExternalSchemaLocationProvider[] getProviders() { |
| return fProviders; |
| } |
| |
| public static synchronized ExternalSchemaLocationProviderRegistry getInstance() { |
| if (fRegistry == null) |
| fRegistry = new ExternalSchemaLocationProviderRegistry(); |
| return fRegistry; |
| } |
| } |