httpcontextinjectableprovider.java

来自「resetful样式的ws样例,一种面向资源的webservices服务」· Java 代码 · 共 103 行

/*
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. 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 https://jersey.dev.java.net/CDDL+GPL.html
 * or jersey/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 jersey/legal/LICENSE.txt.
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 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package com.sun.jersey.impl.model.parameter;

import com.sun.jersey.api.core.HttpContext;
import com.sun.jersey.api.uri.ExtendedUriInfo;
import com.sun.jersey.spi.inject.Injectable;
import com.sun.jersey.spi.inject.InjectableProvider;
import com.sun.jersey.spi.service.ComponentContext;
import com.sun.jersey.spi.service.ComponentProvider.Scope;
import java.lang.reflect.Type;
import java.util.HashMap;
import java.util.Map;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Request;
import javax.ws.rs.core.SecurityContext;
import javax.ws.rs.core.UriInfo;

/**
 *
 * @author [e-mail]
 */
public final class HttpContextInjectableProvider implements 
        InjectableProvider<Context, Type> {
        
    private static final class HttpContextInjectable implements Injectable<Object> {
        public Object getValue(HttpContext context) {
            return context;
        }
    }
    
    private static final class HttpContextRequestInjectable implements Injectable<Object> {
        public Object getValue(HttpContext context) {
            return context.getRequest();
        }
    }
    
    private static final class UriInfoInjectable implements Injectable<UriInfo> {
        public UriInfo getValue(HttpContext context) {
            return context.getUriInfo();
        }
    }
    
    private final Map<Type, Injectable> injectables;
    
    public HttpContextInjectableProvider() {        
        injectables = new HashMap<Type, Injectable>();
        
        HttpContextRequestInjectable re = new HttpContextRequestInjectable();
        injectables.put(HttpHeaders.class, re);
        injectables.put(Request.class, re);
        injectables.put(SecurityContext.class, re);
        
        injectables.put(HttpContext.class, new HttpContextInjectable());
        
        injectables.put(UriInfo.class, new UriInfoInjectable());
        injectables.put(ExtendedUriInfo.class, new UriInfoInjectable());
    }
    
    public Scope getScope() {
        return Scope.PerRequest;
    }
        
    public Injectable getInjectable(ComponentContext ic, Context a, Type c) {
        return injectables.get(c);
    }
}