diff options
Diffstat (limited to 'sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context')
4 files changed, 233 insertions, 0 deletions
diff --git a/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/InstanceFactory.java b/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/InstanceFactory.java new file mode 100644 index 0000000000..e2d99852d8 --- /dev/null +++ b/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/InstanceFactory.java @@ -0,0 +1,43 @@ +/* + * 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.implementation.java.context; + +import org.apache.tuscany.sca.core.factory.InstanceWrapper; + +/** + * Interface for a factory that returns an injected component instance. + * This is used by a Component implementation to create new instances of + * application implementation objects as determined by the component scope's + * lifecycle. + * <p/> + * The implementation of this interface may be supplied by the user, + * may be generated during deployment, or may be dynamic. + * + * @version $Rev$ $Date$ + * @param <T> Type of the instance generated by the factory. + */ +public interface InstanceFactory<T> { + /** + * Creates a new instance of the component. + * All injected values must be set but any @Init methods must not have been invoked. + * + * @return A wrapper for the created component instance. + */ + InstanceWrapper<T> newInstance(); +} diff --git a/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/InstanceFactoryProvider.java b/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/InstanceFactoryProvider.java new file mode 100644 index 0000000000..df21e013f1 --- /dev/null +++ b/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/InstanceFactoryProvider.java @@ -0,0 +1,49 @@ +/* + * 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.implementation.java.context; + +import org.apache.tuscany.sca.core.factory.ObjectFactory; +import org.apache.tuscany.sca.implementation.java.JavaElementImpl; + +/** + * @version $Rev$ $Date$ + */ +public interface InstanceFactoryProvider<T> { + /** + * Return the implementation class. + * + * @return the implementation class. + */ + Class<T> getImplementationClass(); + + /** + * Sets an object factory for an injection site + * + * @param element the injection site name + * @param objectFactory the object factory + */ + void setObjectFactory(JavaElementImpl element, ObjectFactory<?> objectFactory); + + /** + * Create an instance factory that can be used to create component instances. + * + * @return a new instance factory + */ + InstanceFactory<T> createFactory(); +} diff --git a/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/ReflectiveInstanceFactory.java b/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/ReflectiveInstanceFactory.java new file mode 100644 index 0000000000..73b7990a79 --- /dev/null +++ b/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/ReflectiveInstanceFactory.java @@ -0,0 +1,86 @@ +/* + * 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.implementation.java.context; + +import java.lang.reflect.Constructor; +import java.lang.reflect.InvocationTargetException; + +import org.apache.tuscany.sca.core.factory.InstanceWrapper; +import org.apache.tuscany.sca.core.factory.ObjectCreationException; +import org.apache.tuscany.sca.core.factory.ObjectFactory; +import org.apache.tuscany.sca.implementation.java.injection.Injector; +import org.apache.tuscany.sca.implementation.java.invocation.EventInvoker; + +/** + * @version $Rev$ $Date$ + */ +public class ReflectiveInstanceFactory<T> implements InstanceFactory<T> { + private final Constructor<T> ctr; + private final ObjectFactory<?>[] ctrArgs; + private final Injector<T>[] injectors; + private final EventInvoker<T> initInvoker; + private final EventInvoker<T> destroyInvoker; + + public ReflectiveInstanceFactory(Constructor<T> ctr, + ObjectFactory<?>[] ctrArgs, + Injector<T>[] injectors, + EventInvoker<T> initInvoker, + EventInvoker<T> destroyInvoker) { + this.ctr = ctr; + this.ctrArgs = ctrArgs; + this.injectors = injectors; + this.initInvoker = initInvoker; + this.destroyInvoker = destroyInvoker; + } + + public InstanceWrapper<T> newInstance() { + T instance; + try { + if (ctrArgs != null) { + Object[] args = new Object[ctrArgs.length]; + for (int i = 0; i < args.length; i++) { + args[i] = ctrArgs[i].getInstance(); + } + instance = ctr.newInstance(args); + } else { + instance = ctr.newInstance(); + } + } catch (InstantiationException e) { + String name = ctr.getDeclaringClass().getName(); + throw new AssertionError("Class is not instantiable [" + name + "]"); + } catch (IllegalAccessException e) { + String name = ctr.getName(); + throw new AssertionError("Constructor is not accessible [" + name + "]"); + } catch ( + InvocationTargetException e) { + String name = ctr.getName(); + throw new ObjectCreationException("Exception thrown by constructor: " + name, e); + } + + if (injectors != null) { + for (Injector<T> injector : injectors) { + //FIXME Injectors should never be null + if (injector != null) + injector.inject(instance); + } + } + + return new ReflectiveInstanceWrapper<T>(instance, initInvoker, destroyInvoker); + } +} diff --git a/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/ReflectiveInstanceWrapper.java b/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/ReflectiveInstanceWrapper.java new file mode 100644 index 0000000000..aeaf60e957 --- /dev/null +++ b/sandbox/ant/sca/trunk/modules/implementation-java-runtime/src/main/java/org/apache/tuscany/sca/implementation/java/context/ReflectiveInstanceWrapper.java @@ -0,0 +1,55 @@ +/* + * 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.implementation.java.context; + +import org.apache.tuscany.sca.core.factory.InstanceWrapper; +import org.apache.tuscany.sca.core.scope.TargetDestructionException; +import org.apache.tuscany.sca.core.scope.TargetInitializationException; +import org.apache.tuscany.sca.implementation.java.invocation.EventInvoker; + +/** + * @version $Rev$ $Date$ + */ +public class ReflectiveInstanceWrapper<T> implements InstanceWrapper<T> { + private final EventInvoker<T> initInvoker; + private final EventInvoker<T> destroyInvoker; + private final T instance; + + public ReflectiveInstanceWrapper(T instance, EventInvoker<T> initInvoker, EventInvoker<T> destroyInvoker) { + this.instance = instance; + this.initInvoker = initInvoker; + this.destroyInvoker = destroyInvoker; + } + + public T getInstance() { + return instance; + } + + public void start() throws TargetInitializationException { + if (initInvoker != null) { + initInvoker.invokeEvent(instance); + } + } + + public void stop() throws TargetDestructionException { + if (destroyInvoker != null) { + destroyInvoker.invokeEvent(instance); + } + } +} |