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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.
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 * GPL Classpath Exception:
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package com.sun.jersey.server.wadl;

import com.sun.research.ws.wadl.Application;

import java.util.Collections;
import java.util.Map;

import java.util.Set;

import javax.ws.rs.core.MediaType;
import javax.xml.namespace.QName;

/**
 * This class is designed to combine the Application instance with any other
 * external metadata that might be required to describe the application.
 *
 * @author Gerard Davison
 */
public class ApplicationDescription {

    private Application _application;
    private WadlGenerator.ExternalGrammarDefinition _externalGrammarDefiniton;

    ApplicationDescription( Application application,
                            WadlGenerator.ExternalGrammarDefinition externalGrammarDefiniton ) {
        super();
        this._application = application;
        this._externalGrammarDefiniton = externalGrammarDefiniton;
    }

    /**
     * @return The instance of the application object
     */
    public Application getApplication() {
        return _application;
    }
    
    /**
     * @return the QName for the given Class in the grammar
     */
    public QName resolve(Class type) {
        return _externalGrammarDefiniton.resolve(type);
    }

    /**
     * @return the external metadata for a give URL, generally provided as a sub resource
     *   or the root application.wadl
     */
    public ExternalGrammar getExternalGrammar(String path) {
        return _externalGrammarDefiniton.map.get( path );
    }

    
    /**
     * @return A set of all the external metadata keys
     */
    public Set getExternalMetadataKeys() {
        return _externalGrammarDefiniton.map.keySet();
    }
    

    /**
     * A simple holder class that stores a type and binary content
     * to be used to return extra metadata with
     */
    public static class ExternalGrammar {
        private MediaType _type;
        private byte[] _content;

        public ExternalGrammar( MediaType type, byte[] content ) {
            super();
            this._type = type;
            this._content = content;
        }

        public MediaType getType() {
            return _type;
        }

        public byte[] getContent() {
            // Defensive copy
            return _content.clone();
        }
    }
}