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package org.apache.wink.common.internal.lifecycle;

import org.apache.wink.common.internal.i18n.Messages;
import org.apache.wink.common.internal.registry.metadata.ApplicationMetadataCollector;
import org.apache.wink.common.internal.registry.metadata.ProviderMetadataCollector;
import org.apache.wink.common.internal.registry.metadata.ResourceMetadataCollector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * 

* Default implementation for LifecycleManager according to JAX RS (JSR 311). *

* For createObjectFactory(T object) the factory will always return a * SingletonObjectFactory. *

* For createObjectFactory(final Class cls) the factory will return: *

    *
  • SingletonObjectFactory - for Providers
  • *
  • ClassMetadataPrototypeOF - for Resources
  • *
  • SimplePrototypeOF - for Resources (marked with DispatchedPath annotation) *
  • *
* and throw IllegalArgumentException otherwise. * * @param * @see SingletonObjectFactory * @see PrototypeObjectFactory * @see SimplePrototypeOF */ class DefaultLifecycleManager implements LifecycleManager { private static final Logger logger = LoggerFactory.getLogger(DefaultLifecycleManager.class); /** * The default implementation, returns a SingletonFactory for all objects. */ public ObjectFactory createObjectFactory(T object) { if (object == null) { throw new NullPointerException(Messages.getMessage("variableIsNull", "object")); //$NON-NLS-1$ //$NON-NLS-2$ } logger.trace("Creating a {} for {}", SingletonObjectFactory.class, object); //$NON-NLS-1$ return LifecycleManagerUtils.createSingletonObjectFactory(object); } public ObjectFactory createObjectFactory(final Class cls) { logger.trace("Entry {}", cls); //$NON-NLS-1$ if (cls == null) { throw new NullPointerException(Messages.getMessage("variableIsNull", "cls")); //$NON-NLS-1$ //$NON-NLS-2$ } if (ResourceMetadataCollector.isDynamicResource(cls)) { // default factory cannot create instance of DynamicResource throw new IllegalArgumentException(Messages .getMessage("cannotCreateDefaultFactoryForDR", String.valueOf(cls))); //$NON-NLS-1$ } ObjectFactory ret = null; if (ApplicationMetadataCollector.isApplication(cls)) { // by default application subclasses are singletons ret = LifecycleManagerUtils.createSingletonObjectFactory(cls); } else if (ProviderMetadataCollector.isProvider(cls)) { // by default providers are singletons ret = LifecycleManagerUtils.createSingletonObjectFactory(cls); } else if (ResourceMetadataCollector.isStaticResource(cls)) { // by default resources are prototypes (created per request) ret = LifecycleManagerUtils.createPrototypeObjectFactory(cls); } if (ret != null) { logger.trace("Exit {}", ret); //$NON-NLS-1$ return ret; } else // unknown object, should never reach this code throw new IllegalArgumentException(Messages .getMessage("cannotCreateDefaultFactoryFor", String.valueOf(cls))); //$NON-NLS-1$ } }




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