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A bundle containing code of all jar-based modules that provide JAX-RS and Jersey-related features. Such a bundle is *only intended* for developers that do not use Maven's dependency system. The bundle does not include code for contributes, tests and samples.

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/*
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 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 *
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package com.sun.jersey.server.impl.application;

import com.sun.jersey.api.container.ContainerException;
import com.sun.jersey.api.core.DefaultResourceConfig;
import com.sun.jersey.core.spi.component.ComponentProvider;
import com.sun.jersey.core.spi.component.ProviderFactory;
import java.util.Collections;
import java.util.Set;
import java.util.logging.Logger;
import javax.ws.rs.core.Application;

/**
 *
 * @author [email protected]
 */
public class DeferredResourceConfig extends DefaultResourceConfig {

    private static final Logger LOGGER =
            Logger.getLogger(DeferredResourceConfig.class.getName());

    private final Class appClass;

    private final Set> defaultClasses;
    
    public DeferredResourceConfig(Class appClass) {
        this(appClass, Collections.>emptySet());
    }

    public DeferredResourceConfig(Class appClass, 
            Set> defaultClasses) {
        this.appClass = appClass;
        this.defaultClasses = defaultClasses;
    }

    public ApplicationHolder getApplication(ProviderFactory pf) {
        return new ApplicationHolder(pf);
    }

    public class ApplicationHolder {
        private final Application originalApp;

        private final DefaultResourceConfig adaptedApp;

        private ApplicationHolder(ProviderFactory pf) {
            final ComponentProvider cp = pf.getComponentProvider(appClass);
            if (cp == null) {
                throw new ContainerException("The Application class " + appClass.getName() + " could not be instantiated");
            }
            this.originalApp = (Application)cp.getInstance();

            if ((originalApp.getClasses() == null || originalApp.getClasses().isEmpty()) &&
                    (originalApp.getSingletons() == null || originalApp.getSingletons().isEmpty())) {
                LOGGER.info("Instantiated the Application class " + appClass.getName() +
                        ". The following root resource and provider classes are registered: " + defaultClasses);
                this.adaptedApp = new DefaultResourceConfig(defaultClasses);
                adaptedApp.add(originalApp);
            } else {
                LOGGER.info("Instantiated the Application class " + appClass.getName());
                adaptedApp = null;
            }

        }

        public Application getOriginalApplication() {
            return originalApp;
        }

        public Application getApplication() {
            return (adaptedApp != null) ? adaptedApp : originalApp;
        }
    }
}