| /******************************************************************************* |
| * Copyright (c) 2010 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.e4.core.services.injector; |
| |
| import javax.inject.Named; |
| |
| /** |
| * NOTE: This is a preliminary form; this API will change. |
| * |
| * @noextend This class is not intended to be subclassed by clients. |
| */ |
| public class ObjectDescriptor { |
| |
| final private Class desiredClass; |
| final private String[] qualifiers; |
| final private String[] values; |
| |
| static final private String named = Named.class.getName(); |
| |
| static public ObjectDescriptor make(Class clazz) { |
| return new ObjectDescriptor(clazz, null, null); |
| } |
| |
| static public ObjectDescriptor make(String name) { |
| return new ObjectDescriptor(null, new String[] { named }, new String[] { name }); |
| } |
| |
| static public ObjectDescriptor make(Class clazz, String name) { |
| if (name == null) |
| return make(clazz); |
| return new ObjectDescriptor(clazz, new String[] { named }, new String[] { name }); |
| } |
| |
| public ObjectDescriptor(Class desiredClass, String[] qualifiers, String[] values) { |
| this.desiredClass = desiredClass; |
| this.qualifiers = qualifiers; |
| this.values = values; |
| } |
| |
| public Class getElementClass() { |
| return desiredClass; |
| } |
| |
| public boolean hasQualifier(String qualifier) { |
| if (qualifier == null) |
| return false; |
| if (qualifiers == null) |
| return false; |
| for (int i = 0; i < qualifiers.length; i++) { |
| if (qualifier.equals(qualifiers[i])) |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Returns null if qualifier is not present |
| * |
| * @param qualifier |
| * @return |
| */ |
| public String getQualifierValue(String qualifier) { |
| if (qualifier == null) |
| return null; |
| if (qualifiers == null) |
| return null; |
| for (int i = 0; i < qualifiers.length; i++) { |
| if (qualifier.equals(qualifiers[i])) |
| return values[i]; |
| } |
| return null; |
| } |
| |
| public String toString() { |
| StringBuffer buffer = new StringBuffer(); |
| if (desiredClass != null) |
| buffer.append(desiredClass.getName()); |
| else |
| buffer.append("_descriptor_"); |
| if (qualifiers != null) { |
| buffer.append("{"); |
| for (int i = 0; i < qualifiers.length; i++) { |
| if (i != 0) |
| buffer.append(", "); |
| buffer.append(qualifiers[i]); |
| buffer.append("=\""); |
| buffer.append(values[i]); |
| buffer.append("\""); |
| } |
| buffer.append("}"); |
| } |
| return buffer.toString(); |
| } |
| |
| } |