1 files changed, 72 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.6-TUSCANY-3909/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppModuleActivator.java b/sca-java-1.x/tags/1.6-TUSCANY-3909/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppModuleActivator.java
new file mode 100644
index 0000000000..c10e5e7b5a
--- /dev/null
+++ b/sca-java-1.x/tags/1.6-TUSCANY-3909/host-webapp/src/main/java/org/apache/tuscany/sca/host/webapp/WebAppModuleActivator.java
@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ * 
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.    
+ */
+
+package org.apache.tuscany.sca.host.webapp;
+
+import java.util.List;
+
+import org.apache.tuscany.sca.core.ExtensionPointRegistry;
+import org.apache.tuscany.sca.core.ModuleActivator;
+import org.apache.tuscany.sca.host.http.ServletHost;
+import org.apache.tuscany.sca.host.http.ServletHostExtensionPoint;
+
+/**
+ * Activates the webapp host by registering the webapp ServletHost impl
+ *
+ * @version $Rev$ $Date$
+ */
+public class WebAppModuleActivator implements ModuleActivator {
+
+    public void start(ExtensionPointRegistry extensionPointRegistry) {
+
+        ServletHostExtensionPoint servletHosts =
+            extensionPointRegistry.getExtensionPoint(ServletHostExtensionPoint.class);
+        
+        List<ServletHost> hosts = servletHosts.getServletHosts();
+        if (isRunningInWebapp()) {
+            if (hosts.size() > 0) {
+                hosts.removeAll(hosts);
+            }
+            servletHosts.addServletHost(WebAppServletHost.getInstance());
+        }
+    }
+
+    public void stop(ExtensionPointRegistry registry) {
+    	// as we know we are running in a webapp remove all of the servlet
+    	// hosts. There will just be one - see start method
+        ServletHostExtensionPoint servletHosts =
+        	registry.getExtensionPoint(ServletHostExtensionPoint.class);
+        List<ServletHost> hosts = servletHosts.getServletHosts();
+        hosts.clear();
+    }
+
+    /**
+     * TODO: this seems a bit of a hacky way to find if its running in a webapp
+     *       is there a better way?
+     */
+    private boolean isRunningInWebapp() {
+        for (StackTraceElement ste : new Exception().getStackTrace()) {
+            if (ste.getClassName().equals(WebSCADomain.class.getName())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+}