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Diffstat (limited to 'sca-java-1.x/branches/sca-java-0.91/modules/extension-helper/src/main/java/org/apache/tuscany/sca/spi/impl/ImplementationImplementationProvider.java')
-rw-r--r-- | sca-java-1.x/branches/sca-java-0.91/modules/extension-helper/src/main/java/org/apache/tuscany/sca/spi/impl/ImplementationImplementationProvider.java | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-0.91/modules/extension-helper/src/main/java/org/apache/tuscany/sca/spi/impl/ImplementationImplementationProvider.java b/sca-java-1.x/branches/sca-java-0.91/modules/extension-helper/src/main/java/org/apache/tuscany/sca/spi/impl/ImplementationImplementationProvider.java new file mode 100644 index 0000000000..99e2d0fd88 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.91/modules/extension-helper/src/main/java/org/apache/tuscany/sca/spi/impl/ImplementationImplementationProvider.java @@ -0,0 +1,91 @@ +/* + * 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.spi.impl; + +import java.util.ArrayList; +import java.util.List; + +import org.apache.tuscany.sca.assembly.Implementation; +import org.apache.tuscany.sca.interfacedef.Operation; +import org.apache.tuscany.sca.invocation.Invoker; +import org.apache.tuscany.sca.invocation.Message; +import org.apache.tuscany.sca.provider.ImplementationProvider; +import org.apache.tuscany.sca.runtime.RuntimeComponent; +import org.apache.tuscany.sca.runtime.RuntimeComponentService; +import org.apache.tuscany.sca.spi.ImplementationActivator; +import org.apache.tuscany.sca.spi.InvokerFactory; + +/** + * The ImplementationProvider createInvoker method is called before the start method + * but the runtime isn't properly setup until the start method is called. This means + * that Invoker's can't initialize things like the services, references and properties + * until start is called. This class tries to get around that by using an Invoker + * proxy that delays creating the real Invoker till start is called. + */ +public class ImplementationImplementationProvider implements ImplementationProvider { + + ImplementationActivator implementationActivator; + RuntimeComponent runtimeComponent; + Implementation impl; + Object userImpl; + + List<InvokerProxy> invokers = new ArrayList<InvokerProxy>(); + + public ImplementationImplementationProvider(ImplementationActivator implementationActivator, RuntimeComponent rc, Implementation impl, Object userImpl) { + this.implementationActivator = implementationActivator; + this.runtimeComponent = rc; + this.impl = impl; + this.userImpl = userImpl; + } + + public Invoker createInvoker(RuntimeComponentService arg0, final Operation op) { + InvokerProxy invoker = new InvokerProxy(op); + invokers.add(invoker); + return invoker; + } + + public Invoker createCallbackInvoker(Operation operation) { + throw new RuntimeException("TODO: callbacks not yet implemented"); + } + + public void start() { + InvokerFactory factory = implementationActivator.createInvokerFactory(runtimeComponent, impl, userImpl); + for (InvokerProxy invoker : invokers) { + invoker.start(factory); + } + } + + public void stop() { + } + + class InvokerProxy implements Invoker { + Invoker invoker; + Operation op; + InvokerProxy(Operation op) { + this.op = op; + } + public Message invoke(Message arg0) { + return invoker.invoke(arg0); + } + public void start(InvokerFactory factory) { + invoker = factory.createInvoker(op); + } + } +} |