Hi Tom,
Thanks for your reply.
This is what I need.
But now, we need to know how to do that in CLI and admin gui.
Note that in admin gui, or CLI, if we don't specify, then it is a null
which becomes a default.
Is there a way to specify "" in admin gui or CLI?
Thanks.
Shing Wai Chan
On 2/3/11 10:01 AM, Tom Mueller wrote:
> I checked the config API interface, and found my assumption below is
> incorrect.
>
> If you call setSessionFileName(""), you get "" as the value for the
> attribute. If you call setSessionFileName(null), the value is reset to
> the default value.
>
> Note, though, that if you do:
>
> asadmin set someattribute=
>
> the set command translates this into a setSomeattribute(null), so the
> value is reset to the default value. There isn't anyway using the
> current set command to set a value to an empty string via asadmin.
> However, if you edit the domain.xml and insert someattribute="" in the
> XML, then the empty string will be used by the server.
>
> Tom
>
> On 2/2/2011 2:23 PM, Shing Wai Chan wrote:
>> Having "" session file name to indicate disable writing is a feature
>> in sun-web.xml.
>> See http://blogs.sun.com/jluehe/entry/how_to_disable_persisting_of
>>
>> Is it more consistent for ManagerProperties behaving the same way?
>> Shing Wai Chan
>>
>> On 2/2/11 12:07 PM, Tom Mueller wrote:
>>> What does having a value of "" for the session-file-name mean? Does
>>> is mean to not store session data?
>>> If so, maybe there should be a boolean flag:
>>> enable-session-data-storage.
>>>
>>> I haven't verified this by locating the code, but I suspect that
>>> setSessionFileName("") means return it to the default value.
>>>
>>> Tom
>>>
>>>
>>> On 2/2/2011 12:27 PM, Shing Wai Chan wrote:
>>>> Hi Tom,
>>>> Let me describe what I need.
>>>> Out of the box, I want to have a default value "SESSIONS.ser".
>>>> And that need to be able to set with value "".
>>>> I try @Attribute(defaultValue="SESSIONS.ser") before.
>>>> I find that the default value will be provided if I set it "".
>>>> How can we achieve this?
>>>> Thanks.
>>>> Shing Wai Chan
>>>>
>>>>
>>>> On 2/2/11 7:59 AM, Tom Mueller wrote:
>>>>> Shing Wai,
>>>>> I'm not sure that I understand the question either.
>>>>>
>>>>> I don't understand what you mean by "internally we have a
>>>>> default". Do you mean that inside your code, you check to see if
>>>>> the value of the attribute is null, and then use "SESSIONS.ser"
>>>>> instead?
>>>>>
>>>>> What actually is the problem?
>>>>>
>>>>> Is it that when you have @Attribute(defaultValue="SESSIONS.ser"),
>>>>> and then someone does setSessionFileName(""), that the value
>>>>> doesn't go to the empty string but instead goes back to the
>>>>> default value? Same with calling setSessionFileName(null)?
>>>>>
>>>>> Tom
>>>>>
>>>>>
>>>>> On 2/1/2011 9:08 PM, Jennifer Chou wrote:
>>>>>> Maybe I don't quite understand. Can you check if
>>>>>> ManagerProperties.getSessionFileName() returns null to
>>>>>> distinguish that sessionFileName was not set?
>>>>>> Can you give some specific examples for when defaultValue, "",
>>>>>> null should be used?
>>>>>>
>>>>>> On 2/1/2011 9:27 PM, Shing Wai Chan wrote:
>>>>>>> If I do not set the default value, then I will get null for
>>>>>>> ManagerProperties.getSessionFileName() when user does not
>>>>>>> specify element.
>>>>>>> In our case, how can distinguish between not set and explicitly
>>>>>>> set it to "".
>>>>>>>
>>>>>>>
>>>>>>> On 2/1/11 4:48 PM, Jennifer Chou wrote:
>>>>>>>> Actually, I think if you have a default value it will always
>>>>>>>> return the default value if you don't set any value (set to ""
>>>>>>>> or null).
>>>>>>>> I guess you should not use the defaultValue on the attribute so
>>>>>>>> you can set it to "" or null.
>>>>>>>> Then maybe you can add a static field or method to return the
>>>>>>>> default value? I don't know if that will work for you.
>>>>>>>>
>>>>>>>> On 2/1/2011 7:06 PM, Shing Wai Chan wrote:
>>>>>>>>> cc. Tom
>>>>>>>>> Any comment?
>>>>>>>>> Shing Wai Chan
>>>>>>>>>
>>>>>>>>> On 2/1/11 3:32 PM, Shing Wai Chan wrote:
>>>>>>>>>> Hi Jennifer,
>>>>>>>>>>
>>>>>>>>>> I have a question on admin backend. Hope that you can help me.
>>>>>>>>>> There is a attribute in config-api/.../ManagerProperties.java:
>>>>>>>>>> @Attribute
>>>>>>>>>> public String getSessionFileName();
>>>>>>>>>>
>>>>>>>>>> Right now, the default is null.
>>>>>>>>>> But internally, we have a default "SESSIONS.ser".
>>>>>>>>>> There is a bug that we cannot unset this value.
>>>>>>>>>>
>>>>>>>>>> What is the best way to do that?
>>>>>>>>>> I try to change it as follows:
>>>>>>>>>> - @Attribute
>>>>>>>>>> + @Attribute(defaultValue="SESSIONS.ser")
>>>>>>>>>> public String getSessionFileName();
>>>>>>>>>>
>>>>>>>>>> and find that the admin backend will provide the default
>>>>>>>>>> value "SESSIONS.ser"
>>>>>>>>>> if we don't set a value for sessionFileName.
>>>>>>>>>>
>>>>>>>>>> What is the best way to resolve this?
>>>>>>>>>> Is there anyway we can specify "" or null and has a non-empty
>>>>>>>>>> default String?
>>>>>>>>>>
>>>>>>>>>> Please let me know.
>>>>>>>>>> Thanks.
>>>>>>>>>> Shing Wai Chan
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>
>>>>>>>
>>>>
>>