1 files changed, 164 insertions, 0 deletions
diff --git a/sca-java-2.x/tags/2.0.1-RC1/modules/host-corba-jee/src/main/java/org/apache/tuscany/sca/host/corba/jee/JEECorbaHost.java b/sca-java-2.x/tags/2.0.1-RC1/modules/host-corba-jee/src/main/java/org/apache/tuscany/sca/host/corba/jee/JEECorbaHost.java
new file mode 100644
index 0000000000..4d86a08eaa
--- /dev/null
+++ b/sca-java-2.x/tags/2.0.1-RC1/modules/host-corba-jee/src/main/java/org/apache/tuscany/sca/host/corba/jee/JEECorbaHost.java
@@ -0,0 +1,164 @@
+/*
+ * 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.corba.jee;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import javax.naming.Context;
+import javax.naming.InitialContext;
+import javax.rmi.PortableRemoteObject;
+
+import org.apache.tuscany.sca.core.LifeCycleListener;
+import org.apache.tuscany.sca.host.corba.CorbaHost;
+import org.apache.tuscany.sca.host.corba.CorbaHostException;
+import org.apache.tuscany.sca.host.corba.CorbaHostUtils;
+import org.apache.tuscany.sca.host.corba.CorbanameURL;
+import org.oasisopen.sca.ServiceRuntimeException;
+import org.omg.CORBA.ORB;
+import org.omg.CORBA.Object;
+import org.omg.CosNaming.NameComponent;
+import org.omg.CosNaming.NamingContext;
+import org.omg.CosNaming.NamingContextExt;
+import org.omg.CosNaming.NamingContextExtHelper;
+import org.omg.CosNaming.NamingContextHelper;
+import org.omg.CosNaming.NamingContextPackage.InvalidName;
+import org.omg.CosNaming.NamingContextPackage.NotFound;
+
+/**
+ * @version $Rev$ $Date$
+ * Implementation of JEE CORBA host
+ */
+public class JEECorbaHost implements CorbaHost, LifeCycleListener {
+
+    public static final String ORB_NAME = "java:comp/ORB";
+
+    private List<String> registeredServants = Collections.synchronizedList(new ArrayList<String>());
+    private ORB orb;
+
+    private void registerURI(String uri) {
+        registeredServants.add(uri);
+    }
+
+    private void removeURI(String uri) {
+        registeredServants.remove(uri);
+    }
+
+    private NamingContextExt getNamingContext(String nameService) throws Exception {
+        org.omg.CORBA.Object objRef = orb.resolve_initial_references(nameService);
+        return NamingContextExtHelper.narrow(objRef);
+    }
+
+    private void handleException(Exception e) throws CorbaHostException {
+        // The cause of the Exception is JDK specific
+        if (e instanceof NotFound) {
+            throw new CorbaHostException(CorbaHostException.NO_SUCH_OBJECT, e);
+        } else if (e instanceof InvalidName) {
+            throw new CorbaHostException(e);
+        } else {
+            throw new CorbaHostException(e);
+        }
+    }
+
+    public void registerServant(String uri, Object servantObject) throws CorbaHostException {
+        CorbanameURL details = CorbaHostUtils.getServiceDetails(uri);
+        try {
+            NamingContext namingCtx = getNamingContext(details.getNameService());
+            for (int i = 0; i < details.getNamePath().size() - 1; i++) {
+                NameComponent nc = new NameComponent(details.getNamePath().get(i), "");
+                NameComponent[] path = new NameComponent[] {nc};
+                try {
+                    namingCtx = NamingContextHelper.narrow(namingCtx.resolve(path));
+                } catch (Exception e) {
+                    namingCtx = namingCtx.bind_new_context(path);
+                }
+            }
+            NameComponent finalName =
+                new NameComponent(details.getNamePath().get(details.getNamePath().size() - 1), "");
+            try {
+                namingCtx.resolve(new NameComponent[] {finalName});
+                // no exception means that some object is already registered
+                // under this name, we need to crash here
+                throw new CorbaHostException(CorbaHostException.BINDING_IN_USE);
+            } catch (NotFound e) {
+                namingCtx.bind(new NameComponent[] {finalName}, servantObject);
+                registerURI(uri);
+            }
+        } catch (CorbaHostException e) {
+            throw e;
+        } catch (Exception e) {
+            handleException(e);
+        }
+    }
+
+    public void unregisterServant(String uri) throws CorbaHostException {
+        CorbanameURL details = CorbaHostUtils.getServiceDetails(uri);
+        try {
+            NamingContextExt namingCtx = getNamingContext(details.getNameService());
+            namingCtx.unbind(namingCtx.to_name(details.getName()));
+            removeURI(uri);
+        } catch (Exception e) {
+            handleException(e);
+        }
+    }
+
+    public Object lookup(String uri) throws CorbaHostException {
+        Object result = null;
+        try {
+            CorbanameURL url = new CorbanameURL(uri);
+            NamingContextExt context = getNamingContext(url.getNameService());
+            result = context.resolve_str(url.getName());
+        } catch (Exception e) {
+            // e.printStackTrace();
+            handleException(e);
+        }
+        if (result == null) {
+            throw new CorbaHostException(CorbaHostException.NO_SUCH_OBJECT);
+        }
+        return result;
+    }
+
+    // obtain ORB from environment
+    public void start() {
+        Context ctx;
+        try {
+            ctx = new InitialContext();
+            orb = (ORB)PortableRemoteObject.narrow(ctx.lookup(ORB_NAME), org.omg.CORBA.ORB.class);
+        } catch (Exception e) {
+            throw new ServiceRuntimeException(e);
+        }
+    }
+
+    // unregister registered servants
+    public void stop() {
+        // use copy because unregisterServant(...) method removes from
+        // registeredServants collection
+        List<String> rsCopy = new ArrayList<String>(registeredServants);
+        for (String servantURI : rsCopy) {
+            try {
+                unregisterServant(servantURI);
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+}