| /******************************************************************************* |
| * Copyright (c) 2005, 2009 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.osgi.baseadaptor.loader; |
| |
| import java.security.ProtectionDomain; |
| import org.eclipse.osgi.baseadaptor.BaseData; |
| import org.eclipse.osgi.baseadaptor.bundlefile.BundleFile; |
| import org.eclipse.osgi.framework.util.KeyedElement; |
| import org.eclipse.osgi.framework.util.KeyedHashSet; |
| |
| /** |
| * A ClasspathEntry contains a single <code>BundleFile</code> which is used as |
| * a source to load classes and resources from, and a single |
| * <code>ProtectionDomain</code> which is used as the domain to define classes |
| * loaded from this ClasspathEntry. |
| * @since 3.2 |
| */ |
| public class ClasspathEntry { |
| private final BundleFile bundlefile; |
| private final ProtectionDomain domain; |
| private KeyedHashSet userObjects = null; |
| // Note that PDE has internal dependency on this field type/name (bug 267238) |
| private volatile BaseData data; |
| |
| /** |
| * Constructs a ClasspathElement with the specified bundlefile and domain |
| * @param bundlefile A BundleFile object which acts as a source |
| * @param domain the ProtectDomain for all code loaded from this classpath element |
| */ |
| public ClasspathEntry(BundleFile bundlefile, ProtectionDomain domain) { |
| this.bundlefile = bundlefile; |
| this.domain = domain; |
| } |
| |
| /** |
| * Returns the source BundleFile for this classpath entry |
| * @return the source BundleFile for this classpath entry |
| */ |
| public BundleFile getBundleFile() { |
| return bundlefile; |
| } |
| |
| /** |
| * Returns the base data which this entry is associated with. This can be |
| * either a host or fragment base data. |
| */ |
| public BaseData getBaseData() { |
| return data; |
| } |
| |
| void setBaseData(BaseData data) { |
| this.data = data; |
| } |
| |
| /** |
| * Returns the ProtectionDomain for this classpath entry |
| * @return the ProtectionDomain for this classpath entry |
| */ |
| public ProtectionDomain getDomain() { |
| return domain; |
| } |
| |
| /** |
| * Returns a user object which is keyed by the specified key |
| * @param key the key of the user object to get |
| * @return a user object which is keyed by the specified key |
| */ |
| public Object getUserObject(Object key) { |
| if (userObjects == null) |
| return null; |
| synchronized (userObjects) { |
| return userObjects.getByKey(key); |
| } |
| } |
| |
| /** |
| * Adds a user object |
| * @param userObject the user object to add |
| */ |
| public synchronized void addUserObject(KeyedElement userObject) { |
| if (userObjects == null) |
| userObjects = new KeyedHashSet(5, false); |
| synchronized (userObjects) { |
| userObjects.add(userObject); |
| } |
| } |
| } |