2 Replies Latest reply on Nov 9, 2009 4:34 PM by Francisco Jose Peredo Noguez

    Seam annotation processing

    Arbi Sookazian Master

      How does the Seam container process all the annotations in a Seam application?


      I did not find any answer to this question in DAllen or Yuan books.


      I don't think the Java Reflection API is being used in the framework codebase.  I'm guessing there's an interceptor that is responsible for the annotation processing?


      I wrote this simple class that outputs some annotation-related info:


      package org.jboss.seam.example.booking;
      
      import java.lang.reflect.Method;
      
      import org.jboss.seam.ScopeType;
      import org.jboss.seam.annotations.Create;
      import org.jboss.seam.annotations.Logger;
      import org.jboss.seam.annotations.Name;
      import org.jboss.seam.annotations.Scope;
      import org.jboss.seam.annotations.Startup;
      import org.jboss.seam.log.Log;
      
      @Name("testReflections")
      @Startup
      @Scope(ScopeType.APPLICATION)
      public class TestReflections {
           
           @Logger private Log log;
           
           @Create
           public void init(){
                
                getAnnotations("org.jboss.seam.Component");
                getAnnotations("org.jboss.seam.example.booking.BookingListAction");
                
           }
           
           private void getAnnotations(String myClass) {
                
                try {
                     Class clazz = Class.forName(myClass);
                     Method[] methods = clazz.getMethods();
                     java.lang.annotation.Annotation[] annotations = null;
                     for (int i = 0; i < methods.length; i++) {
                          log.info("methods[i].toString(): "+methods[i].toString());
                          annotations = methods[i].getAnnotations();
                          for(int j = 0; j < annotations.length; j++){
                               java.lang.annotation.Annotation annotation = annotations[j];
                               log.info("annotation.toString() = "+annotation.toString());
                          }
                     }
                     log.info("***********************************************************************************");
                }
                catch (ClassNotFoundException e) {
                     log.error("error found: ", e);
                }
           }
      }



      results:


      10:02:45,145 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.isInstance(java.lang.Object)
      10:02:45,145 INFO  [TestReflections] methods[i].toString(): public static org.jboss.seam.Component org.jboss.seam.Component.forName(java.lang.String)
      10:02:45,145 INFO  [TestReflections] methods[i].toString(): public java.lang.String org.jboss.seam.Component.getName()
      10:02:45,145 INFO  [TestReflections] methods[i].toString(): public java.lang.String org.jboss.seam.Component.toString()
      10:02:45,145 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.String,org.jboss.seam.ScopeType,boolean)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.String,boolean,boolean)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.String,boolean)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.String)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.String,org.jboss.seam.ScopeType)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.String,org.jboss.seam.ScopeType,boolean,boolean)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.Class,org.jboss.seam.ScopeType,boolean)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.Class,org.jboss.seam.ScopeType)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.Class,boolean)
      10:02:45,147 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstance(java.lang.Class)
      10:02:45,150 INFO  [TestReflections] methods[i].toString(): public java.lang.Object org.jboss.seam.Component.newInstance()
      10:02:45,151 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.destroy(java.lang.Object)
      10:02:45,151 INFO  [TestReflections] methods[i].toString(): public org.jboss.seam.ComponentType org.jboss.seam.Component.getType()
      10:02:45,151 INFO  [TestReflections] methods[i].toString(): public java.lang.Object org.jboss.seam.Component.wrap(java.lang.Object,javassist.util.proxy.MethodHandler) throws java.lang.Exception
      10:02:45,151 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.initialize(java.lang.Object) throws java.lang.Exception
      10:02:45,151 INFO  [TestReflections] methods[i].toString(): public java.util.List org.jboss.seam.Component.getInterceptors(org.jboss.seam.annotations.intercept.InterceptorType)
      10:02:45,151 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.inject(java.lang.Object,boolean)
      10:02:45,151 INFO  [TestReflections] methods[i].toString(): public org.jboss.seam.Namespace org.jboss.seam.Component.getNamespace()
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public long org.jboss.seam.Component.getTimeout()
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public org.jboss.seam.ScopeType org.jboss.seam.Component.getScope()
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.addInterceptor(org.jboss.seam.intercept.Interceptor)
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.addInterceptor(java.lang.Object)
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public java.lang.String[] org.jboss.seam.Component.getDependencies()
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public java.util.Collection org.jboss.seam.Component.getImports()
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.isSecure()
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public java.util.Collection org.jboss.seam.Component.getRemoveMethods()
      10:02:45,153 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getCreateMethod()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public static java.lang.String org.jboss.seam.Component.getComponentName(java.lang.Class)
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public java.util.List org.jboss.seam.Component.createUserInterceptors(org.jboss.seam.annotations.intercept.InterceptorType)
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.isInterceptionEnabled()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.beanClassHasAnnotation(java.lang.String)
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.beanClassHasAnnotation(java.lang.Class)
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.businessInterfaceHasAnnotation(java.lang.Class)
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public java.util.List org.jboss.seam.Component.getServerSideInterceptors()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public java.util.List org.jboss.seam.Component.getClientSideInterceptors()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getDestroyMethod()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getRemoveMethod(java.lang.String)
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasPreDestroyMethod()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasPostConstructMethod()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasPrePassivateMethod()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasPostActivateMethod()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasDestroyMethod()
      10:02:45,156 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasCreateMethod()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasUnwrapMethod()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getUnwrapMethod()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public java.util.List org.jboss.seam.Component.getOutAttributes()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public java.util.List org.jboss.seam.Component.getInAttributes()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.needsInjection()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.needsOutjection()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.disinject(java.lang.Object)
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.outject(java.lang.Object,boolean)
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public java.util.Set org.jboss.seam.Component.getBusinessInterfaces()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public static java.util.Set org.jboss.seam.Component.getBusinessInterfaces(java.lang.Class)
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public static java.lang.Object org.jboss.seam.Component.getInstanceFromFactory(java.lang.String)
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasDefaultRemoveMethod()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getDefaultRemoveMethod()
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.callCreateMethod(java.lang.Object)
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.callDestroyMethod(java.lang.Object)
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.callPreDestroyMethod(java.lang.Object)
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.callPostConstructMethod(java.lang.Object)
      10:02:45,158 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.callPrePassivateMethod(java.lang.Object)
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.Component.callPostActivateMethod(java.lang.Object)
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getPostActivateMethod()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getPrePassivateMethod()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getPostConstructMethod()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public java.lang.reflect.Method org.jboss.seam.Component.getPreDestroyMethod()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public transient java.lang.Object org.jboss.seam.Component.callComponentMethod(java.lang.Object,java.lang.reflect.Method,java.lang.Object[])
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public static java.lang.Class org.jboss.seam.Component.createProxyFactory(org.jboss.seam.ComponentType,java.lang.Class,java.util.Collection)
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.isStartup()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.isSynchronize()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.isLifecycleMethod(java.lang.reflect.Method)
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.isConversationManagementMethod(java.lang.reflect.Method)
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public java.util.List org.jboss.seam.Component.getPersistenceContextAttributes()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.isPerNestedConversation()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public boolean org.jboss.seam.Component.hasConversationManagementMethods()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public static org.jboss.seam.Model org.jboss.seam.Model.forClass(java.lang.Class)
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public final java.lang.Class org.jboss.seam.Model.getBeanClass()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public native int java.lang.Object.hashCode()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public final native java.lang.Class java.lang.Object.getClass()
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public final void java.lang.Object.wait() throws java.lang.InterruptedException
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public final void java.lang.Object.wait(long,int) throws java.lang.InterruptedException
      10:02:45,161 INFO  [TestReflections] methods[i].toString(): public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException
      10:02:45,163 INFO  [TestReflections] methods[i].toString(): public boolean java.lang.Object.equals(java.lang.Object)
      10:02:45,163 INFO  [TestReflections] methods[i].toString(): public final native void java.lang.Object.notify()
      10:02:45,163 INFO  [TestReflections] methods[i].toString(): public final native void java.lang.Object.notifyAll()
      10:02:45,163 INFO  [TestReflections] ***********************************************************************************
      10:02:45,163 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.example.booking.BookingListAction.destroy()
      10:02:45,163 INFO  [TestReflections] annotation.toString() = @javax.ejb.Remove(retainIfException=false)
      10:02:45,163 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.example.booking.BookingListAction.cancel()
      10:02:45,163 INFO  [TestReflections] methods[i].toString(): public void org.jboss.seam.example.booking.BookingListAction.getBookings()
      10:02:45,163 INFO  [TestReflections] annotation.toString() = @org.jboss.seam.annotations.Factory(value=, autoCreate=false, scope=UNSPECIFIED)
      10:02:45,163 INFO  [TestReflections] annotation.toString() = @org.jboss.seam.annotations.Observer(value=[bookingConfirmed], create=true)
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public org.jboss.seam.example.booking.Booking org.jboss.seam.example.booking.BookingListAction.getBooking()
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public native int java.lang.Object.hashCode()
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public final native java.lang.Class java.lang.Object.getClass()
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public final void java.lang.Object.wait() throws java.lang.InterruptedException
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public final void java.lang.Object.wait(long,int) throws java.lang.InterruptedException
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public final native void java.lang.Object.wait(long) throws java.lang.InterruptedException
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public boolean java.lang.Object.equals(java.lang.Object)
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public final native void java.lang.Object.notify()
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public final native void java.lang.Object.notifyAll()
      10:02:45,166 INFO  [TestReflections] methods[i].toString(): public java.lang.String java.lang.Object.toString()
      10:02:45,166 INFO  [TestReflections] ***********************************************************************************