diff options
Diffstat (limited to 'sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core')
5 files changed, 308 insertions, 0 deletions
diff --git a/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java new file mode 100644 index 0000000000..7a42300098 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultExtensionPointRegistry.java @@ -0,0 +1,69 @@ +/* + * 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.core; + +import java.util.HashMap; +import java.util.Map; + + +/** + * Default implementation of a registry to hold all the Tuscany core extension + * points. As the point of contact for all extension artifacts this registry + * allows loaded extensions to find all other parts of the system and + * register themselves appropriately. + * + * @version $Rev$ $Date$ + */ +public class DefaultExtensionPointRegistry implements ExtensionPointRegistry { + private Map<Class<?>, Object> extensionPoints = new HashMap<Class<?>, Object>(); + + /** + * Add an extension point to the registry. This default implementation + * stores extensions against the interfaces that they implement. + * @param extensionPoint The instance of the extension point + */ + public void addExtensionPoint(Object extensionPoint) { + Class[] interfaces = extensionPoint.getClass().getInterfaces(); + for (int i = 0; i < interfaces.length; i++) { + extensionPoints.put(interfaces[i], extensionPoint); + } + } + + /** + * Get the extension point by the interface that it implements + * @param extensionPointType The lookup key (extension point interface) + * @return The instance of the extension point + */ + public <T> T getExtensionPoint(Class<T> extensionPointType) { + return extensionPointType.cast(extensionPoints.get(extensionPointType)); + } + + /** + * Remove an extension point based on the interface that it implements + * @param extensionPoint The extension point to remove + */ + public void removeExtensionPoint(Object extensionPoint) { + Class[] interfaces = extensionPoint.getClass().getInterfaces(); + for (int i = 0; i < interfaces.length; i++) { + extensionPoints.remove(interfaces[i]); + } + } + +} diff --git a/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultModelFactoryExtensionPoint.java b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultModelFactoryExtensionPoint.java new file mode 100644 index 0000000000..6765a6c8f1 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/DefaultModelFactoryExtensionPoint.java @@ -0,0 +1,67 @@ +/* + * 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.core; + +import java.util.HashMap; + +/** + * Default implementation of a model factory extension point. + * + * @version $Rev$ $Date$ + */ +public class DefaultModelFactoryExtensionPoint implements ModelFactoryExtensionPoint { + + private HashMap<Class<?>, Object> factories = new HashMap<Class<?>, Object>(); + + /** + * Add a model factory extension. + * + * @param factory The factory to add + */ + public void addFactory(Object factory) { + Class[] interfaces = factory.getClass().getInterfaces(); + for (int i = 0; i<interfaces.length; i++) { + factories.put(interfaces[i], factory); + } + } + + /** + * Remove a model factory extension. + * + * @param factory The factory to remove + */ + public void removeFactory(Object factory) { + Class[] interfaces = factory.getClass().getInterfaces(); + for (int i = 0; i<interfaces.length; i++) { + factories.remove(interfaces[i]); + } + } + + /** + * Get a factory implementing the given interface. + * @param factoryInterface The lookup key (factory interface) + * @return The factory + */ + public <T> T getFactory(Class<T> factoryInterface) { + Object factory = factories.get(factoryInterface); + return factoryInterface.cast(factory); + } + +} diff --git a/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ExtensionPointRegistry.java b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ExtensionPointRegistry.java new file mode 100644 index 0000000000..9609487080 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ExtensionPointRegistry.java @@ -0,0 +1,50 @@ +/* + * 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.core; + + +/** + * The registry for the Tuscany core extension points. As the point of contact + * for all extension artifacts this registry allows loaded extensions to find + * all other parts of the system and register themselves appropriately. + * + * @version $Rev$ $Date$ + */ +public interface ExtensionPointRegistry { + + /** + * Add an extension point to the registry + * @param extensionPoint The instance of the extension point + */ + void addExtensionPoint(Object extensionPoint); + + /** + * Get the extension point by the interface + * @param extensionPointType The lookup key (extension point interface) + * @return The instance of the extension point + */ + <T> T getExtensionPoint(Class<T> extensionPointType); + + /** + * Remove an extension point + * @param extensionPoint The extension point to remove + */ + void removeExtensionPoint(Object extensionPoint); +} diff --git a/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ModelFactoryExtensionPoint.java b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ModelFactoryExtensionPoint.java new file mode 100644 index 0000000000..64706c6efc --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ModelFactoryExtensionPoint.java @@ -0,0 +1,54 @@ +/* + * 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.core; + +/** + * An extension point for model factories. Model factories are provided to + * abstract the classes that represent artifacts in the assembly model away + * from their creation mechanism. When the runtime needs to extend the model + * as it reads in contributed artifacts it looks up the factory for the + * artifact required in this registry + * + * @version $Rev$ $Date$ + */ +public interface ModelFactoryExtensionPoint { + + /** + * Add a model factory extension. + * + * @param factory The factory to add + */ + void addFactory(Object factory); + + /** + * Remove a model factory extension. + * + * @param factory The factory to remove + */ + void removeFactory(Object factory); + + /** + * Get a factory implementing the given interface. + * @param factoryInterface the lookup key (factory interface) + * @return The factory + */ + <T> T getFactory(Class<T> factoryInterface); + +} diff --git a/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ModuleActivator.java b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ModuleActivator.java new file mode 100644 index 0000000000..0244862309 --- /dev/null +++ b/sca-java-1.x/branches/sca-java-0.90/modules/core-spi/src/main/java/org/apache/tuscany/sca/core/ModuleActivator.java @@ -0,0 +1,68 @@ +/* + * 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.core; + + +/** + * ModuleActivator represents a module that plugs into the Tuscany system. Each + * module should provide an implementation of this interface and register the + * ModuleActivator implementation class by defining a file named + * + * "META-INF/services/org.apache.tuscany.spi.bootstrp.ModuleActivator" + * + * The content of the file is the class name of the ModuleActivator implementation. + * The implementation class must have a no-arg constructor. The same instance + * will be used to invoke all the methods during different phases of the module + * activation. Note that the start and stop methods defined by this interface + * take a reference to the Tuscany SCA runtime ExtensionPointRegistry. This + * gives the ModuleActivator the oppotunity to add extension points to the + * registry as it is requested to start up and remove them when it is requested + * to shut down. + * + * @version $Rev$ $Date$ + */ +public interface ModuleActivator { + /** + * Get a map of the extension points defined by this module. The key is the + * java interface to represent the extension point and the the value is the + * instance of the implementation of the interface. + * + * @return All the extension points defined by this module + */ + Object[] getExtensionPoints(); + + /** + * This method is invoked when the module is started by the Tuscany system. + * It can be used by this module to registr extensions against extension + * points. + * + * @param registry The extension point registry + */ + void start(ExtensionPointRegistry registry); + + /** + * This method is invoked when the module is stopped by the Tuscany system. + * It can be used by this module to unregister extensions against the + * extension points. + * + * @param registry The extension point registry + */ + void stop(ExtensionPointRegistry registry); +} |