I think we need to have a way to set "" explicitly in both asadmin and
admin gui.
Shing Wai Chan
On 2/3/11 10:19 AM, Tom Mueller wrote:
> From my previous response: There isn't anyway using the current set
> command to set a value to an empty string via asadmin.
>
> Tom
>
> On 2/3/2011 12:09 PM, Shing Wai Chan wrote:
>> 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
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>
>>>>>>
>>>>
>>