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
>>>>>>>
>>>>>>>
>>>>>>
>>>>
>