diff options
Diffstat (limited to 'sca-java-1.x/tags/1.5/modules/host-corba-jee/src/main/java/org/apache/tuscany/sca/host/corba/jee/JEECorbaHost.java')
-rw-r--r-- | sca-java-1.x/tags/1.5/modules/host-corba-jee/src/main/java/org/apache/tuscany/sca/host/corba/jee/JEECorbaHost.java | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/sca-java-1.x/tags/1.5/modules/host-corba-jee/src/main/java/org/apache/tuscany/sca/host/corba/jee/JEECorbaHost.java b/sca-java-1.x/tags/1.5/modules/host-corba-jee/src/main/java/org/apache/tuscany/sca/host/corba/jee/JEECorbaHost.java new file mode 100644 index 0000000000..7e714c1ca5 --- /dev/null +++ b/sca-java-1.x/tags/1.5/modules/host-corba-jee/src/main/java/org/apache/tuscany/sca/host/corba/jee/JEECorbaHost.java @@ -0,0 +1,162 @@ +/* + * 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.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.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 { + + 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() throws CorbaHostException { + Context ctx; + try { + ctx = new InitialContext(); + orb = (ORB)PortableRemoteObject.narrow(ctx.lookup(ORB_NAME), org.omg.CORBA.ORB.class); + } catch (Exception e) { + throw new CorbaHostException(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(); + } + } + } + +} |