diff options
Diffstat (limited to 'tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/system/context/SystemAtomicContext.java')
-rw-r--r-- | tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/system/context/SystemAtomicContext.java | 159 |
1 files changed, 0 insertions, 159 deletions
diff --git a/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/system/context/SystemAtomicContext.java b/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/system/context/SystemAtomicContext.java deleted file mode 100644 index 374555bfb6..0000000000 --- a/tags/java-M1-final/java/sca/core/src/main/java/org/apache/tuscany/core/system/context/SystemAtomicContext.java +++ /dev/null @@ -1,159 +0,0 @@ -/** - * - * Copyright 2005 The Apache Software Foundation or its licensors, as applicable. - * - * Licensed 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.core.system.context; - -import org.apache.tuscany.core.builder.ObjectFactory; -import org.apache.tuscany.core.injection.EventInvoker; -import org.apache.tuscany.core.injection.ObjectCallbackException; -import org.apache.tuscany.core.injection.ObjectCreationException; -import org.apache.tuscany.core.context.AtomicContext; -import org.apache.tuscany.core.context.impl.AbstractContext; -import org.apache.tuscany.core.context.TargetException; -import org.apache.tuscany.core.context.QualifiedName; -import org.apache.tuscany.core.context.ContextInitException; -import org.apache.tuscany.core.context.event.InstanceCreated; - -/** - * Manages system component implementation instances - * - * @version $Rev$ $Date$ - */ -public class SystemAtomicContext extends AbstractContext implements AtomicContext { - - private boolean eagerInit; - - private EventInvoker<Object> initInvoker; - - private EventInvoker<Object> destroyInvoker; - - private boolean stateless; - - // the cached target instance - private Object cachedTargetInstance; - - // responsible for creating a new implementation instance with injected references and properties - private ObjectFactory objectFactory; - - public SystemAtomicContext(String name, ObjectFactory objectFactory, boolean eagerInit, EventInvoker<Object> initInvoker, - EventInvoker<Object> destroyInvoker, boolean stateless) { - super(name); - assert (objectFactory != null) : "Object factory was null"; - if (eagerInit && initInvoker == null) { - throw new AssertionError("No intialization method found for eager init implementation"); - } - this.objectFactory = objectFactory; - this.eagerInit = eagerInit; - this.initInvoker = initInvoker; - this.destroyInvoker = destroyInvoker; - this.stateless = stateless; - } - - public void setName(String name) { - super.setName(name); - } - - protected int type; - - public int getType() { - return type; - } - - public void setType(int type) { - this.type = type; - } - - public void init() throws TargetException{ - getInstance(null); - } - - public void destroy() throws TargetException { - if (cachedTargetInstance != null) { - if (destroyInvoker != null) { - try { - destroyInvoker.invokeEvent(cachedTargetInstance); - } catch (ObjectCallbackException e) { - throw new TargetException(e.getCause()); - } - } - } - lifecycleState = STARTED; - } - - public synchronized Object getInstance(QualifiedName qName) throws TargetException { - if (cachedTargetInstance != null) { - return cachedTargetInstance; // already cached, just return - } - - if (getLifecycleState() == ERROR || getLifecycleState() == CONFIG_ERROR) { - return null; - } - synchronized (this) { - try { - Object instance = objectFactory.getInstance(); - // handle @Init - if (initInvoker != null) { - initInvoker.invokeEvent(instance); - } - publish(new InstanceCreated(this)); - lifecycleState = RUNNING; - if (stateless) { - return instance; - } else { - // cache the actual instance - cachedTargetInstance = instance; - return cachedTargetInstance; - } - } catch (ObjectCreationException e) { - lifecycleState = ERROR; - TargetException te = new TargetException("Error creating component instance", e); - te.setIdentifier(getName()); - throw te; - } - } - - } - - public Object getTargetInstance() throws TargetException { - return getInstance(null); - } - - public boolean isEagerInit() { - return eagerInit; - } - - public boolean isDestroyable() { - return (destroyInvoker != null); - } - - public void start() throws ContextInitException { - if (getLifecycleState() != UNINITIALIZED && getLifecycleState() != STOPPED) { - throw new IllegalStateException("Component must be in UNINITIALIZED state [" + getLifecycleState() + "]"); - } - if (objectFactory == null) { - lifecycleState = ERROR; - ContextInitException e = new ContextInitException("Object factory not found "); - e.setIdentifier(getName()); - throw e; - } - lifecycleState = INITIALIZED; - } - - public void stop() { - lifecycleState = STOPPED; - } - -} |