[webbeans-commits] Webbeans SVN: r2428 - ri/trunk/impl/src/main/java/org/jboss/webbeans/util/reflection.
webbeans-commits at lists.jboss.org
webbeans-commits at lists.jboss.org
Thu Apr 16 07:17:22 EDT 2009
Author: pete.muir at jboss.org
Date: 2009-04-16 07:17:22 -0400 (Thu, 16 Apr 2009)
New Revision: 2428
Added:
ri/trunk/impl/src/main/java/org/jboss/webbeans/util/reflection/AnnotationImpl.java
Log:
Add an implementation of Annotation
Added: ri/trunk/impl/src/main/java/org/jboss/webbeans/util/reflection/AnnotationImpl.java
===================================================================
--- ri/trunk/impl/src/main/java/org/jboss/webbeans/util/reflection/AnnotationImpl.java (rev 0)
+++ ri/trunk/impl/src/main/java/org/jboss/webbeans/util/reflection/AnnotationImpl.java 2009-04-16 11:17:22 UTC (rev 2428)
@@ -0,0 +1,125 @@
+/*
+* JBoss, Home of Professional Open Source
+* Copyright 2008, Red Hat Middleware LLC, and individual contributors
+* by the @authors tag. See the copyright.txt in the distribution for a
+* full listing of individual contributors.
+*
+* 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.jboss.webbeans.util.reflection;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import javax.inject.ExecutionException;
+
+
+/**
+ * Supports instantiation of annotation type instances.
+ *
+ * @author Pete Muir
+ * @author Gavin King
+ *
+ * @param <T>
+ * the annotation type
+ */
+public class AnnotationImpl<T extends Annotation> implements Annotation
+{
+
+ private final Class<T> annotationType;
+ private final Method[] members;
+
+ public AnnotationImpl(Class<T> annotationType, Method[] members)
+ {
+ this.annotationType = annotationType;
+ this.members = members;
+ }
+
+ public Class<? extends Annotation> annotationType()
+ {
+ return annotationType;
+ }
+
+ @Override
+ public String toString()
+ {
+ String string = "@" + annotationType().getName() + "(";
+ for (int i = 0; i < members.length; i++)
+ {
+ string += members[i].getName() + "=";
+ string += invoke(members[i], this);
+ if (i < members.length - 1)
+ {
+ string += ",";
+ }
+ }
+ return string + ")";
+ }
+
+ @Override
+ public boolean equals(Object other)
+ {
+ if (other instanceof Annotation)
+ {
+ Annotation that = (Annotation) other;
+ if (this.annotationType().equals(that.annotationType()))
+ {
+ for (Method member : members)
+ {
+ Object thisValue = invoke(member, this);
+ Object thatValue = invoke(member, that);
+ if (!thisValue.equals(thatValue))
+ {
+ return false;
+ }
+ }
+ return true;
+ }
+ }
+ return false;
+ }
+
+ @Override
+ public int hashCode()
+ {
+ int hashCode = 0;
+ for (Method member : members)
+ {
+ int memberNameHashCode = 127 * member.getName().hashCode();
+ int memberValueHashCode = invoke(member, this).hashCode();
+ hashCode += memberNameHashCode ^ memberValueHashCode;
+ }
+ return hashCode;
+ }
+
+ private static Object invoke(Method method, Object instance)
+ {
+ try
+ {
+ method.setAccessible(true);
+ return method.invoke(instance);
+ }
+ catch (IllegalArgumentException e)
+ {
+ throw new ExecutionException("Error checking value of member method " + method.getName() + " on " + method.getDeclaringClass(), e);
+ }
+ catch (IllegalAccessException e)
+ {
+ throw new ExecutionException("Error checking value of member method " + method.getName() + " on " + method.getDeclaringClass(), e);
+ }
+ catch (InvocationTargetException e)
+ {
+ throw new ExecutionException("Error checking value of member method " + method.getName() + " on " + method.getDeclaringClass(), e);
+ }
+ }
+}
Property changes on: ri/trunk/impl/src/main/java/org/jboss/webbeans/util/reflection/AnnotationImpl.java
___________________________________________________________________
Name: svn:mime-type
+ text/plain
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