contextresolvertest.java

resetful样式的ws样例,一种面向资源的webservices服务

/*
 *
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 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
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 */

package com.sun.jersey.impl.inject;

import com.sun.jersey.impl.AbstractResourceTester;
import com.sun.jersey.api.client.WebResource;
import java.io.IOException;
import java.math.BigInteger;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.core.Context;
import javax.ws.rs.ext.ContextResolver;
import javax.ws.rs.ext.Provider;

/**
 *
 * @author [e-mail]
 */
public class ContextResolverTest extends AbstractResourceTester {
    
    public ContextResolverTest(String testName) {
        super(testName);
    }

    @Provider
    public static class IntegerContextResolver implements ContextResolver<String> {

        public String getContext(Class<?> objectType) {
            if (Integer.class == objectType)
                return objectType.getName();
            else 
                return null;
        }
        
    }
    
    @Provider
    public static class BigIntegerContextResolver implements ContextResolver<String> {

        public String getContext(Class<?> objectType) {
            if (BigInteger.class == objectType)
                return objectType.getName();
            else 
                return null;
        }
        
    }
    
    @Path("/")
    public static class NullContextResource {
        @Context ContextResolver<String> cr;
        
        @GET
        public String get() {
            return (cr == null) ? "null" : "value";
        }   
    }
    
    @Path("/")
    public static class ContextResource {
        
        @Context ContextResolver<String> cr;
        
        @GET
        public String get() {
            return cr.getContext(Integer.class);
        }        
        
        @GET @Path("big")
        public String getBig() {
            return cr.getContext(BigInteger.class);
        }        
        
        @GET @Path("null")
        public String getNull() {
            String s = cr.getContext(Float.class);
            return (s != null) ? s : "null";
        }        
    }
    
    public void testZero() throws IOException {
        initiateWebApplication(NullContextResource.class);
        WebResource r = resource("/");
        
        assertEquals("null", resource("/").get(String.class));
    }
    
    public void testOne() throws IOException {
        initiateWebApplication(ContextResource.class, IntegerContextResolver.class);
        
        assertEquals("java.lang.Integer", resource("/").get(String.class));        
        
        assertEquals("null", resource("/null").get(String.class));        
    }   
    
    public void testTwo() throws IOException {
        initiateWebApplication(ContextResource.class, IntegerContextResolver.class, 
                BigIntegerContextResolver.class);
        
        assertEquals("java.lang.Integer", resource("/").get(String.class));        
        
        assertEquals("java.math.BigInteger", resource("/big").get(String.class));        
        
        assertEquals("null", resource("/null").get(String.class));        
    }   
}