ParameterTypeArgumentOrderTest.java

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package com.sun.jersey.impl.entity;

import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.core.DefaultResourceConfig;
import com.sun.jersey.api.core.ResourceConfig;
import com.sun.jersey.core.util.FeaturesAndProperties;
import com.sun.jersey.impl.AbstractResourceTester;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.StreamingOutput;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

/**
 *
 * @author Paul.Sandoz@Sun.Com
 */
public class ParameterTypeArgumentOrderTest extends AbstractResourceTester {
    public ParameterTypeArgumentOrderTest(String testName) {
        super(testName);
    }

    @Provider
    public static class ObjectWriter implements MessageBodyWriter {
        
        public boolean isWriteable(Class c, Type t, Annotation[] as, MediaType mt) {
            return true;
        }

        public long getSize(Object o, Class type, Type genericType, Annotation annotations[], MediaType mediaType) {
            return -1;
        }

        public void writeTo(Object t, Class type, Type genericType, Annotation[] annotations,
                MediaType mediaType, MultivaluedMap httpHeaders,
                OutputStream out) throws IOException, WebApplicationException {
            out.write(t.toString().getBytes());
        }
    }

    public static class ObjectClass {
        @Override
        public String toString() {
            return "OBJECTCLASS";
        }
    }
    
    @Path("/")
    public static class ObjectResource {
        @GET
        @Path("object")
        public Object object() {
            return new ObjectClass();
        }
        
        @GET
        @Path("streamingoutput")
        public StreamingOutput streamingOutput() {
            return new StreamingOutput() {

                public void write(OutputStream output) throws IOException, WebApplicationException {
                    output.write("STREAMINGOUTPUT".getBytes());
                }
            };
        }        
    }
    
    public void testObjectResource() {
        ResourceConfig rc = new DefaultResourceConfig(ObjectResource.class, ObjectWriter.class);
        rc.getFeatures().put(FeaturesAndProperties.FEATURE_PRE_1_4_PROVIDER_PRECEDENCE, true);
        initiateWebApplication(rc);

        WebResource r = resource("/");

        assertEquals("OBJECTCLASS", r.path("object").get(String.class));
        assertEquals("STREAMINGOUTPUT", r.path("streamingoutput").get(String.class));
    }

    public void testObjectResource2() {
        ResourceConfig rc = new DefaultResourceConfig(ObjectResource.class, ObjectWriter.class);
        rc.getFeatures().put(FeaturesAndProperties.FEATURE_PRE_1_4_PROVIDER_PRECEDENCE, false);
        initiateWebApplication(rc);

        WebResource r = resource("/");

        assertEquals("OBJECTCLASS", r.path("object").get(String.class));
        assertNotSame("STREAMINGOUTPUT", r.path("streamingoutput").get(String.class));
    }

    public static class GenericClassWriter<T> implements MessageBodyWriter<T> {
        private final Class c;

        GenericClassWriter(Class c) {
            this.c = c;
        }
        
        public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
            return c.isAssignableFrom(type);
        }

        public long getSize(T t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
            return -1;
        }

        public void writeTo(T t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
            entityStream.write((c.getSimpleName() + type.getSimpleName()).getBytes());
        }

    }

    public static class A {}

    @Provider
    public static class AWriter extends GenericClassWriter<A> {
        public AWriter() { super(A.class); }
    }

    public static class B extends A {}

    @Provider
    public static class BWriter extends GenericClassWriter<B> {
        public BWriter() { super(B.class); }
    }

    public static class C extends B {}

    @Provider
    public static class CWriter extends GenericClassWriter<C> {
        public CWriter() { super(C.class); }
    }

    @Path("/")
    public static class ClassResource {
        @Path("a")
        @GET
        public A getA() {
            return new A();
        }

        @Path("b")
        @GET
        public A getB() {
            return new B();
        }

        @Path("c")
        @GET
        public A getC() {
            return new C();
        }
    }

    public void testClassResource() {
        initiateWebApplication(AWriter.class, BWriter.class, CWriter.class, ClassResource.class);

        WebResource r = resource("/");

        assertEquals("AA", r.path("a").get(String.class));
        assertEquals("BB", r.path("b").get(String.class));
        assertEquals("CC", r.path("c").get(String.class));
    }

    public void testReverseClassResource() {
        initiateWebApplication(CWriter.class, BWriter.class, AWriter.class, ClassResource.class);

        WebResource r = resource("/");

        assertEquals("AA", r.path("a").get(String.class));
        assertEquals("BB", r.path("b").get(String.class));
        assertEquals("CC", r.path("c").get(String.class));
    }


    public static class GenericClassReaderWriter<T> implements MessageBodyWriter<T>, MessageBodyReader<T> {
        private final Class c;

        GenericClassReaderWriter(Class c) {
            this.c = c;
        }

        public boolean isWriteable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
            return c.isAssignableFrom(type);
        }

        public long getSize(T t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
            return -1;
        }

        public void writeTo(T t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
            entityStream.write((c.getSimpleName() + type.getSimpleName()).getBytes());
        }

        public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
            return c.isAssignableFrom(type);
        }

        public T readFrom(Class<T> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, String> httpHeaders, InputStream entityStream) throws IOException, WebApplicationException {
            try {
                return (T) c.newInstance();
            } catch (Exception ex) {
                throw new RuntimeException(ex);
            }
        }
    }

    @Provider
    public static class AReaderWriter<T> extends GenericClassReaderWriter<T> {
        public AReaderWriter() { super(A.class); }
    }

    @Provider
    public static class BReaderWriter<T> extends GenericClassReaderWriter<B> {
        public BReaderWriter() { super(B.class); }
    }


    @Provider
    public static class CReaderWriter<T> extends GenericClassReaderWriter<C> {
        public CReaderWriter() { super(C.class); }
    }

    public void testClassResourceX() {
        initiateWebApplication(AReaderWriter.class, BReaderWriter.class, CReaderWriter.class, ClassResource.class);

        WebResource r = resource("/");

        assertEquals("AA", r.path("a").get(String.class));
        assertEquals("BB", r.path("b").get(String.class));
        assertEquals("CC", r.path("c").get(String.class));
    }

}