added activation class to ease use of stuff by other plugin projects in a running Eclipse

git-svn-id: https://wala.svn.sourceforge.net/svnroot/wala/trunk@3131 f5eafffb-2e1d-0410-98e4-8ec43c5233c4

com.ibm.wala.core.tests/META-INF/MANIFEST.MF

@@ -22,3 +22,5 @@ Export-Package: com.ibm.wala.core.tests.basic,
  com.ibm.wala.examples.properties,
  com.ibm.wala.demandpa.driver
 Bundle-RequiredExecutionEnvironment: J2SE-1.5
+Bundle-ActivationPolicy: lazy
+Bundle-Activator: com.ibm.wala.core.tests.plugin.CoreTestsPlugin

com.ibm.wala.core.tests/src/com/ibm/wala/core/tests/plugin/CoreTestsPlugin.java

@@ -0,0 +1,62 @@
+/*******************************************************************************
+ * Copyright (c) 2002 - 2006 IBM Corporation.
+ * 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 com.ibm.wala.core.tests.plugin;
+
+import org.eclipse.core.runtime.Plugin;
+import org.osgi.framework.BundleContext;
+
+import com.ibm.wala.annotations.Internal;
+
+/**
+ * The main plugin class to be used in the desktop.
+ */
+@Internal
+public class CoreTestsPlugin extends Plugin {
+
+  // The shared instance.
+  private static CoreTestsPlugin plugin;
+
+  /**
+   * The constructor.
+   */
+  public CoreTestsPlugin() {
+    plugin = this;
+  }
+
+  /**
+   * This method is called upon plug-in activation
+   * @throws IllegalArgumentException  if context is null
+   */
+  @Override
+  public void start(BundleContext context) throws Exception {
+    if (context == null) {
+      throw new IllegalArgumentException("context is null");
+    }
+    super.start(context);
+  }
+
+  /**
+   * This method is called when the plug-in is stopped
+   */
+  @Override
+  public void stop(BundleContext context) throws Exception {
+    super.stop(context);
+    plugin = null;
+  }
+
+  /**
+   * Returns the shared instance.
+   */
+  public static CoreTestsPlugin getDefault() {
+    return plugin;
+  }
+
+}