Jetty example source code file (TestAnnotationInheritance.java)

This example Jetty source code file (TestAnnotationInheritance.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Jetty tags/keywords

annotationcollection, annotationparser, annotationparser, class, class, context, initialcontext, injectioncollection, integer, lifecyclecallbackcollection, list, list, naming, reflection, runascollection, runascollection, util

The Jetty TestAnnotationInheritance.java source code

//========================================================================
//$Id: TestAnnotationInheritance.java 1599 2007-02-15 07:35:48Z janb $
//Copyright 2006 Mort Bay Consulting Pty. Ltd.
//------------------------------------------------------------------------
//Licensed under the Apache License, Version 2.0 (the "License");
//you may not use this file except in compliance with the License.
//You may obtain a copy of the License at 
//http://www.apache.org/licenses/LICENSE-2.0
//Unless required by applicable law or agreed to in writing, software
//distributed under the License is distributed on an "AS IS" BASIS,
//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//See the License for the specific language governing permissions and
//limitations under the License.
//========================================================================

package org.mortbay.jetty.annotations;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.List;

import javax.naming.Context;
import javax.naming.InitialContext;
import org.mortbay.jetty.annotations.resources.ResourceA;
import org.mortbay.jetty.annotations.resources.ResourceB;
import org.mortbay.jetty.plus.annotation.InjectionCollection;
import org.mortbay.jetty.plus.annotation.LifeCycleCallbackCollection;
import org.mortbay.jetty.plus.annotation.RunAsCollection;
import org.mortbay.jetty.plus.naming.NamingEntry;


import junit.framework.TestCase;

/**
 * TestAnnotationInheritance
 *
 *
 */
public class TestAnnotationInheritance extends TestCase
{
    
    public void testInheritance ()
    throws Exception
    {        
        NamingEntry.setScope(NamingEntry.SCOPE_LOCAL);
        
        AnnotationParser processor = new AnnotationParser();
        AnnotationCollection collection = processor.processClass(ClassB.class);
        
        List classes = collection.getClasses();
        assertEquals(2, classes.size());
        
        //check methods
        List methods = collection.getMethods();
        assertTrue(methods!=null);
        assertFalse(methods.isEmpty());
        assertEquals(methods.size(), 4);
        Method m = ClassB.class.getDeclaredMethod("a", new Class[] {});       
        assertTrue(methods.indexOf(m) >= 0);
        Sample s = (Sample)m.getAnnotation(Sample.class);
        assertEquals(51, s.value());
        m = ClassA.class.getDeclaredMethod("a", new Class[] {});
        assertTrue(methods.indexOf(m) < 0); //check overridden public scope superclass method not in there
        
        m = ClassA.class.getDeclaredMethod("b", new Class[] {});
        assertTrue(methods.indexOf(m) >= 0);      
        
        m = ClassB.class.getDeclaredMethod("c", new Class[] {});
        assertTrue(methods.indexOf(m) >= 0);
        m = ClassA.class.getDeclaredMethod("c", new Class[] {});
        assertTrue(methods.indexOf(m) < 0); //check overridden superclass package scope method not in there
        
        m = ClassA.class.getDeclaredMethod("d", new Class[] {});
        assertTrue(methods.indexOf(m) >= 0);
        
        //check fields
        List fields = collection.getFields();
        assertFalse(fields.isEmpty());
        assertEquals(1, fields.size());
        
        Field f = ClassA.class.getDeclaredField("m");
        assertTrue(fields.indexOf(f) >= 0);
        
     
        NamingEntry.setScope(NamingEntry.SCOPE_GLOBAL);
    }
    
    
    public void testResourceAnnotations ()
    throws Exception
    {
        InitialContext ic = new InitialContext();
        Context comp = (Context)ic.lookup("java:comp");
        Context env = comp.createSubcontext("env");
        
        org.mortbay.jetty.plus.naming.EnvEntry resourceA = new org.mortbay.jetty.plus.naming.EnvEntry("resA", new Integer(1000));
        org.mortbay.jetty.plus.naming.EnvEntry resourceB = new org.mortbay.jetty.plus.naming.EnvEntry("resB", new Integer(2000));
        
        NamingEntry.setScope(NamingEntry.SCOPE_LOCAL);
        
        AnnotationParser processor = new AnnotationParser();
        processor.processClass(ResourceB.class);
        InjectionCollection injections = new InjectionCollection();
        LifeCycleCallbackCollection callbacks = new LifeCycleCallbackCollection();
        RunAsCollection runAses = new RunAsCollection();
       
        AnnotationCollection collection = processor.processClass(ResourceB.class); 
        assertEquals(1, collection.getClasses().size());
        assertEquals(3, collection.getMethods().size());
        assertEquals(6, collection.getFields().size());
        
        //process with all the specific annotations turned into injections, callbacks etc
        processor.parseAnnotations(ResourceB.class, runAses, injections, callbacks);
        
        //processing classA should give us these jndi name bindings:
        // java:comp/env/myf
        // java:comp/env/org.mortbay.jetty.annotations.resources.ResourceA/g
        // java:comp/env/mye
        // java:comp/env/org.mortbay.jetty.annotations.resources.ResourceA/h
        // java:comp/env/resA
        // java:comp/env/org.mortbay.jetty.annotations.resources.ResourceB/f
        // java:comp/env/org.mortbay.jetty.annotations.resources.ResourceA/n
        // 
        assertEquals(resourceB.getObjectToBind(), env.lookup("myf"));
        assertEquals(resourceA.getObjectToBind(), env.lookup("mye"));
        assertEquals(resourceA.getObjectToBind(), env.lookup("resA"));
        assertEquals(resourceA.getObjectToBind(), env.lookup("org.mortbay.jetty.annotations.resources.ResourceA/g")); 
        assertEquals(resourceA.getObjectToBind(), env.lookup("org.mortbay.jetty.annotations.resources.ResourceA/h"));
        assertEquals(resourceB.getObjectToBind(), env.lookup("org.mortbay.jetty.annotations.resources.ResourceB/f"));
        assertEquals(resourceB.getObjectToBind(), env.lookup("org.mortbay.jetty.annotations.resources.ResourceA/n"));
        
        //we should have these Injections
        assertNotNull(injections);
        
        List fieldInjections = injections.getFieldInjections(ResourceB.class);
        assertNotNull(fieldInjections);
        assertEquals(5, fieldInjections.size());
        
        List methodInjections = injections.getMethodInjections(ResourceB.class);
        assertNotNull(methodInjections);
        assertEquals(3, methodInjections.size());
    }

}