| /*************************************************************************************************** |
| * Copyright (c) 2003, 2004 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 |
| **************************************************************************************************/ |
| /* |
| * Created on Oct 1, 2003 |
| * |
| * To change the template for this generated file go to Window>Preferences>Java>Code |
| * Generation>Code and Comments |
| */ |
| package org.eclipse.wst.common.frameworks.internal.operations; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jem.util.logger.proxy.Logger; |
| import org.eclipse.wst.common.frameworks.datamodel.IDataModelOperation; |
| import org.eclipse.wst.common.frameworks.internal.enablement.EnablementManager; |
| |
| public class DMOperationExtensionRegistry { |
| |
| protected static boolean canExtHasRead = false; |
| |
| protected static boolean extPointHasRead = false; |
| |
| protected static DMOperationExtensionRegistry instance = null; |
| |
| protected static HashMap extensibleOperations = null; |
| |
| protected static HashMap opExtensions = null; |
| |
| protected static OperationExtensibilityReader opExtensibilityReader = null; |
| |
| protected static OperationExtensionReader opExtensionReader = null; |
| |
| public static String[] getRegisteredOperations(String className) { |
| extensibleOperations = getExtensibility(); |
| if (extensibleOperations != null) { |
| String id = (String) extensibleOperations.get(className); |
| if (id == null) |
| return null; |
| if (opExtensions == null) |
| opExtensions = getExtensionPoints(); |
| if (opExtensions != null) { |
| Collection ext = (Collection) opExtensions.get(id); |
| if (ext != null) |
| return getClassNames(ext.toArray()); |
| } |
| } |
| return null; |
| } |
| |
| private static String[] getClassNames(Object[] opExt) { |
| ArrayList classNames = new ArrayList(); |
| OperationExtension currentExt = null; |
| for (int i = 0; i < opExt.length; i++) { |
| currentExt = (OperationExtension) opExt[i]; |
| /* Only allow extensions which enabled (null project indicates enabled by activity only) */ |
| if (EnablementManager.INSTANCE.getIdentifier(currentExt.getExtensionId(), null).isEnabled()) { |
| String className = currentExt.getPreOperationClass(); |
| if (null != className) { |
| classNames.add(className); |
| } |
| className = currentExt.getPostOperationClass(); |
| if (null != className) { |
| classNames.add(className); |
| } |
| } |
| } |
| String[] array = new String[classNames.size()]; |
| classNames.toArray(array); |
| return array; |
| } |
| |
| public static DMComposedExtendedOperationHolder getExtensions(String className) { |
| extensibleOperations = getExtensibility(); |
| if (extensibleOperations != null) { |
| String id = (String) extensibleOperations.get(className); |
| if (id == null) |
| return null; |
| if (opExtensions == null) |
| opExtensions = getExtensionPoints(); |
| if (opExtensions != null) { |
| Collection ext = (Collection) opExtensions.get(id); |
| if (ext != null) { |
| try { |
| return calculateOperationHolder(ext); |
| } catch (CoreException ex) { |
| Logger.getLogger().logError(ex); |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| public static DMComposedExtendedOperationHolder getExtensions(IDataModelOperation op) { |
| return getExtensions(op.getClass().getName()); |
| } |
| |
| protected String getExtendableOperationId(IDataModelOperation op) { |
| return (String) extensibleOperations.get(op.getClass().getName()); |
| } |
| |
| private static DMComposedExtendedOperationHolder calculateOperationHolder(Collection ext) throws CoreException { |
| Object[] opExt = ext.toArray(); |
| DMComposedExtendedOperationHolder extOperationHolder = new DMComposedExtendedOperationHolder(); |
| IDataModelOperation preOp = null; |
| IDataModelOperation postOp = null; |
| OperationExtension currentExt = null; |
| for (int i = 0; i < opExt.length; i++) { |
| currentExt = (OperationExtension) opExt[i]; |
| /* Only allow extensions which enabled (null project indicates enabled by activity only) */ |
| if (EnablementManager.INSTANCE.getIdentifier(currentExt.getExtensionId(), null).isEnabled()) { |
| preOp = currentExt.getDMPreOperation(); |
| if (preOp != null) { |
| extOperationHolder.addPreOperation(preOp); |
| } |
| postOp = currentExt.getDMPostOperation(); |
| if (postOp != null) { |
| extOperationHolder.addPostOperation(postOp); |
| } |
| } |
| } |
| return extOperationHolder; |
| } |
| |
| private static HashMap getExtensibility() { |
| if (!canExtHasRead) { |
| opExtensibilityReader = new OperationExtensibilityReader(); |
| opExtensibilityReader.readRegistry(); |
| canExtHasRead = true; |
| } |
| if (opExtensibilityReader == null) |
| return null; |
| return OperationExtensibilityReader.getExtendableOperations(); |
| } |
| |
| private static HashMap getExtensionPoints() { |
| if (!extPointHasRead) { |
| opExtensionReader = new OperationExtensionReader(); |
| opExtensionReader.readRegistry(); |
| extPointHasRead = true; |
| } |
| if (opExtensionReader == null) |
| return null; |
| return OperationExtensionReader.getExtensionPoints(); |
| } |
| |
| /** |
| * Gets the instance. |
| * |
| * @return Returns a EjbPageExtensionRegistry |
| */ |
| public static DMOperationExtensionRegistry getInstance() { |
| if (instance == null) |
| instance = new DMOperationExtensionRegistry(); |
| return instance; |
| } |
| |
| } |