Made IMessageFilter generic

Added javadoc to IMessageFilter

README.md

@@ -8,7 +8,8 @@ The performance win of this design is illustrated in <a href="http://codeblock.e
 The benchmarking code can be found <a href="https://github.com/bennidi/eventbus-performance" target="_blank">here</a>
 
 Read this documentation to get an overview of MBassadors features. There is also some documentation in the Wiki - although admittedly
-not enough to make a developer happy (work is in progress). Additionally, you can browse the [javadoc](http://bennidi.github.io/mbassador/)
+not enough to make a developer happy (work is in progress).
+Additionally, you can browse the [javadoc](http://bennidi.github.io/mbassador/)
 
 The current version is 1.1.9 and it is available from the Maven Central Repository. See the release notes for more details.
 

pom.xml

@@ -212,7 +212,7 @@
 		<footer>mbassador, ${project.version}</footer>
 		<doctitle>mbassador, ${project.version}</doctitle>
 		<links>
-		    <link>http://static.springsource.org/spring/docs/3.0.x/javadoc-api/</link>
+		    <link></link>
 		</links>
 	    </configuration>
 	</plugin>
@@ -226,7 +226,7 @@
 		<content>${project.reporting.outputDirectory}/apidocs</content>
 		<skipDeletedFiles>true</skipDeletedFiles>
 		<pubScmUrl>scm:git:git@github.com:bennidi/mbassador.git</pubScmUrl>
-		<scmBranch>gh-pages</scmBranch> <!-- branch with static site -->
+		<scmBranch>gh-pages</scmBranch> <!-- branch with static site on github-->
 	    </configuration>
 	</plugin>
         </plugins>

src/main/java/net/engio/mbassy/listener/IMessageFilter.java

@@ -1,21 +1,40 @@
 package net.engio.mbassy.listener;
 
 /**
- * Message filters can be used to prevent certain messages to be delivered to a specific listener.
- * If a filter is used the message will only be delivered if it passes the filter(s)
- * <p/>
- * NOTE: A message filter must provide either a no-arg constructor.
+ * Message filters can be used to control what messages are delivered to a specific message handler.
+ * Filters are attached to message handler using the @Listener annotation.
+ * If a message handler specifies filters, the filters accepts(...) method will be checked before the actual handler is invoked.
+ * The handler will be invoked only if each filter accepted the message.
+ *
+ * Example:
+ *
+ * @Lister
+ * @Filters(Urlfilter.class)
+ * public void someHandler(String message){...}
+ *
+ * class Urlfilter implements IMessageFilter<String>{
+ *     public boolean accepts(String message, MessageHandler metadata){
+ *         return message.startsWith("http");
+ *     }
+ * }
+ *
+ * bus.post("http://www.infoq.com"); // will be delivered
+ * bus.post("www.stackoverflow.com"); // will not be delivered
+ *
+ * NOTE: A message filter must provide a no-arg constructor!!!
  *
  * @author bennidi
  *         Date: 2/8/12
  */
-public interface IMessageFilter {
+public interface IMessageFilter<M> {
 
     /**
-     * Evaluate the message to ensure that it matches the handler configuration
+     * Check the message for whatever criteria
      *
-     * @param message the message to be delivered
-     * @return
+     * @param message the message to be handled by the handler
+     * @param  metadata the metadata object which describes the message handler
+     * @return  true: if the message matches the criteria and should be delivered to the handler
+     *          false: otherwise
      */
-    boolean accepts(Object message, MessageHandler metadata);
+    boolean accepts(M message, MessageHandler metadata);
 }