IoCComponentProcessorTest.java

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package com.sun.jersey.impl.client.inject;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.config.ClientConfig;
import com.sun.jersey.api.client.config.DefaultClientConfig;
import com.sun.jersey.core.spi.component.ComponentContext;
import com.sun.jersey.core.spi.component.ComponentScope;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProcessor;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProcessorFactory;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProcessorFactoryInitializer;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProvider;
import com.sun.jersey.core.spi.component.ioc.IoCComponentProviderFactory;
import com.sun.jersey.core.spi.component.ioc.IoCFullyManagedComponentProvider;
import com.sun.jersey.core.util.FeaturesAndProperties;
import com.sun.jersey.spi.MessageBodyWorkers;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import javax.ws.rs.ext.Providers;
import junit.framework.TestCase;


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

    public static interface PostConstructListener {
        void postConstruct();

    }

    public static interface SingletonScope {}
    

    @Provider
    public static class MyProvider implements MessageBodyWriter<String>, PostConstructListener, SingletonScope {
        @Context Providers p;

        @Context MessageBodyWorkers mbw;

        @Context ClientConfig cc;

        @Context FeaturesAndProperties fap;

        @Context Client c;

        public void postConstruct() {
            assertNotNull(p);
            assertNotNull(mbw);
            assertNotNull(cc);
            assertNotNull(fap);
            assertNotNull(c);
        }

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

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

        public void writeTo(String t, Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType, MultivaluedMap<String, Object> httpHeaders, OutputStream entityStream) throws IOException, WebApplicationException {
            entityStream.write(t.getBytes());
        }
    }
    
    static class MyIoCComponentProviderFactory implements
            IoCComponentProviderFactory,
            IoCComponentProcessorFactoryInitializer {

        private IoCComponentProcessorFactory cpf;

        public Class<?> componentClass;

        public void init(IoCComponentProcessorFactory cpf) {
            this.cpf = cpf;
        }

        public IoCComponentProvider getComponentProvider(final Class c) {
            if (PostConstructListener.class.isAssignableFrom(c)) {
                final ComponentScope cs = SingletonScope.class.isAssignableFrom(c) ? ComponentScope.Singleton : ComponentScope.PerRequest;
                final IoCComponentProcessor cp = cpf.get(c, cs);
                return new IoCFullyManagedComponentProvider() {

                    public Object getInstance() {
                        componentClass = c;
                        Object o = null;
                        try {
                            o = c.newInstance();
                        } catch (InstantiationException ex) {
                            throw new RuntimeException(ex);
                        } catch (IllegalAccessException ex) {
                            throw new RuntimeException(ex);
                        }
                        cp.postConstruct(o);
                        ((PostConstructListener)o).postConstruct();
                        return o;
                    }

                    public ComponentScope getScope() {
                        return cs;
                    }
                };
            } else {
                return null;
            }
        }

        public IoCComponentProvider getComponentProvider(ComponentContext cc, Class c) {
            return getComponentProvider(c);
        }
    }

    public void testInjected() throws IOException {
        ClientConfig cc = new DefaultClientConfig();
        cc.getClasses().add(MyProvider.class);
        MyIoCComponentProviderFactory pf = new MyIoCComponentProviderFactory();
        Client c = Client.create(cc, pf);
        assertEquals(MyProvider.class, pf.componentClass);
    }


    @Provider
    public static class MyProviderNoInject implements MessageBodyWriter<String>, PostConstructListener, SingletonScope {
        public void postConstruct() {
        }

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

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

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

    public void testNoInjected() throws IOException {
        ClientConfig cc = new DefaultClientConfig();
        cc.getClasses().add(MyProviderNoInject.class);
        MyIoCComponentProviderFactory pf = new MyIoCComponentProviderFactory();
        Client c = Client.create(cc, pf);
        assertEquals(MyProviderNoInject.class, pf.componentClass);
    }
}