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From: David Jencks <david_jencks@yahoo.com>
Subject: Re: svn commit: r485321 - in /geronimo/server/trunk/modules:
 geronimo-kernel/src/main/java/org/apache/geronimo/gbean/
 geronimo-kernel/src/main/java/org/apache/geronimo/gbean/runtime/
 geronimo-kernel/src/test/java/org/apache/geronimo/gbean/ geronimo-k
Date: Mon, 11 Dec 2006 09:58:26 -0800
To: dev@geronimo.apache.org


On Dec 11, 2006, at 7:18 AM, anita kulshreshtha wrote:

>   When we add inteface using addInterface(..), we can end up with two
> methods like this.

You can't have a class that implements both interfaces if they have  
methods whose signature differs only in the return type.  If there  
are problems with trying to expose management interfaces that are not  
actually implemented by the underlying bean maybe we should look for  
other ways of dealing with the management aspects.  Are there actual  
problems with existing gbeans extracting the return type for  
operations?  If so, please indicate which gbean and which  
operation.... I don't want to get lost in too much abstraction as I  
so often do :-)

I very much share Gianni's concerns and was about to write a similar  
note.

thanks
david jencks

> This is not a very good example because the
> objectName will end up as an attribute in GBeanInfoBuilder, not an
> operation.
>
> thanks
> Anita
>
> --- Vamsavardhana Reddy <c1vamsi1c@gmail.com> wrote:
>
>> It is not allowed to have public Object getObjectName() and public
>> String
>> getObjectName() simultaneously.
>>
>> --vamsi
>>
>> On 12/11/06, anita kulshreshtha <a_kulshre@yahoo.com> wrote:
>>>
>>> Gianny,
>>>     Thanks for looking into this. I did consider the easy way out.
>> But
>>> the retrun type is part of the method signature. What happens if we
>>> have
>>>
>>> public class Myclass {
>>> public Object getObjectName()
>>> public String getObjectName()
>>> ..........................
>>> }
>>>     If JMXUtil was patched which one should it return?
>>>
>>> Thanks
>>> Anita
>>>
>>> --- Gianny Damour <gianny.damour@optusnet.com.au> wrote:
>>>
>>>> Hi,
>>>>
>>>> I am quickly scanning this commit and I would like to know if it
>> was
>>>>
>>>> not a little bit less intrusive to keep the existing addOperation
>> and
>>>>
>>>> search for the return type of the added operations against the
>> target
>>>>
>>>> gbeanType. This way, developers do not need to specify the return
>>>> type of the operations (also, the migration of the existing
>> GBeanInfo
>>>>
>>>> could have been avoided).
>>>>
>>>> After reading GERONIMO-2607, it seems that the goal of the change
>> was
>>>>
>>>> to have a return type defined within JConsole for the GBean
>>>> operations. It seems that patching JMXUtil.toMBeanInfo would have
>>>> been another implementation approach: while getting the exposed
>>>> operations, the GBean class could be searched for returned types.
>> One
>>>>
>>>> of the advantages would have been to keep backward compatibility.
>>>>
>>>> Thanks,
>>>> Gianny
>>>>
>>>> On 11/12/2006, at 11:14 AM, akulshreshtha@apache.org wrote:
>>>>
>>>>> Author: akulshreshtha
>>>>> Date: Sun Dec 10 16:14:46 2006
>>>>> New Revision: 485321
>>>>>
>>>>> URL: http://svn.apache.org/viewvc?view=rev&rev=485321
>>>>> Log:
>>>>> GERONIMO-2607 Added returnType to GOperationInfo, This modifies
>>>>> GBeanInfoBuilder and breaks backward compatibility
>>>>>
>>>>> Modified:
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/main/java/org/
>>>>> apache/geronimo/gbean/DynamicGOperationInfo.java
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/main/java/org/
>>>>> apache/geronimo/gbean/GBeanInfoBuilder.java
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/main/java/org/
>>>>> apache/geronimo/gbean/GOperationInfo.java
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/main/java/org/
>>>>> apache/geronimo/gbean/runtime/GBeanOperation.java
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/test/java/org/
>>>>> apache/geronimo/gbean/GBeanInfoTest.java
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/test/java/org/
>>>>> apache/geronimo/kernel/MockGBean.java
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/test/java/org/
>>>>> apache/geronimo/kernel/config/MyGBean.java
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-system/src/main/java/org/
>>>>> apache/geronimo/system/jmx/JMXUtil.java
>>>>>
>>>> geronimo/server/trunk/modules/geronimo-system/src/main/java/org/
>>>>> apache/geronimo/system/logging/log4j/Log4jService.java
>>>>>
>>>>> Modified:
>> geronimo/server/trunk/modules/geronimo-kernel/src/main/
>>>>> java/org/apache/geronimo/gbean/DynamicGOperationInfo.java
>>>>> URL:
>> http://svn.apache.org/viewvc/geronimo/server/trunk/modules/
>>>>> geronimo-kernel/src/main/java/org/apache/geronimo/gbean/
>>>>>
>> DynamicGOperationInfo.java?view=diff&rev=485321&r1=485320&r2=485321
>>>>>
>>>>
>>>
>>
> ======================================================================
>>>>
>>>>> ========
>>>>> ---
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/main/java/org/
>>>>> apache/geronimo/gbean/DynamicGOperationInfo.java (original)
>>>>> +++
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/main/java/org/
>>>>> apache/geronimo/gbean/DynamicGOperationInfo.java Sun Dec 10
>>>>> 16:14:46 2006
>>>>> @@ -24,14 +24,14 @@
>>>>>   */
>>>>>  public class DynamicGOperationInfo extends GOperationInfo {
>>>>>      public DynamicGOperationInfo(String name) {
>>>>> -        super(name);
>>>>> +        super(name, "java.lang.Object");
>>>>>      }
>>>>>
>>>>>      public DynamicGOperationInfo(String name, String[]
>> paramTypes)
>>>> {
>>>>> -        super(name, paramTypes);
>>>>> +        super(name, paramTypes, "java.lang.Object");
>>>>>      }
>>>>>
>>>>>      public DynamicGOperationInfo(String name, List parameters)
>> {
>>>>> -        super(name, parameters);
>>>>> +        super(name, parameters, "java.lang.Object");
>>>>>      }
>>>>>  }
>>>>>
>>>>> Modified:
>> geronimo/server/trunk/modules/geronimo-kernel/src/main/
>>>>> java/org/apache/geronimo/gbean/GBeanInfoBuilder.java
>>>>> URL:
>> http://svn.apache.org/viewvc/geronimo/server/trunk/modules/
>>>>> geronimo-kernel/src/main/java/org/apache/geronimo/gbean/
>>>>> GBeanInfoBuilder.java?view=diff&rev=485321&r1=485320&r2=485321
>>>>>
>>>>
>>>
>>
> ======================================================================
>>>>
>>>>> ========
>>>>> ---
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/main/java/org/
>>>>> apache/geronimo/gbean/GBeanInfoBuilder.java (original)
>>>>> +++
>>>> geronimo/server/trunk/modules/geronimo-kernel/src/main/java/org/
>>>>> apache/geronimo/gbean/GBeanInfoBuilder.java Sun Dec 10 16:14:46
>>>> 2006
>>>>> @@ -187,8 +187,7 @@
>>>>>
>>>>>              for (Iterator i =
>> source.getOperations().iterator();
>>>>> i.hasNext();) {
>>>>>                  GOperationInfo operationInfo =
>> (GOperationInfo)
>>>>> i.next();
>>>>> -                operations.put(new GOperationSignature
>>>>> (operationInfo.getName(),
>>>>> -                        operationInfo.getParameterList()),
>>>>> operationInfo);
>>>>> +                operations.put(new GOperationSignature
>>>>> (operationInfo.getName(), operationInfo.getParameterList()),
>>>>> operationInfo);
>>>>>              }
>>>>>
>>>>>              for (Iterator iterator = source.getReferences
>>>>> ().iterator(); iterator.hasNext();) {
>>>>> @@ -346,7 +345,7 @@
>>>>>                                      method.getName()));
>>>>>                  }
>>>>>              } else {
>>>>> -                addOperation(new
>> GOperationInfo(method.getName(),
>>>>
>>>>> method.getParameterTypes()));
>>>>> +                addOperation(new
>> GOperationInfo(method.getName(),
>>>>
>>>>> method.getParameterTypes(), method.getReturnType().getName()));
>>>>>              }
>>>>>          }
>>>>>          addInterface(interfaces, intf);
>>>>> @@ -401,13 +400,27 @@
>>>>>      public void addOperation(GOperationInfo operationInfo) {
>>>>>          operations.put(new GOperationSignature
>>>>> (operationInfo.getName(), operationInfo.getParameterList()),
>>>>> operationInfo);
>>>>>      }
>>>>> -
>>
> === message truncated ===
>
>
>
>
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