Thanks David . Somehow i overlooked the setXXX method . It fixed the error
but still it results in unnecessary database calls . Infact it results in
one more additional database call thereby making the total to 4. Out of
which only 1 is desirable the other 3 occur due to getManufacturerList()
I tried changing the saveState from client to server in web.xml but that
didnt help
So i will appreciate if either you or Andrew could look into my snippet code
of getManufacturerList() method in earlier posting. I am using RequestMap
but it results in Null pointer Exception
Thanks for your time in advance
Regards
Bansi
David Delbecq-2 wrote:
>
> You need a void setManufacturerList(List l) so saveState can restore the
> state.
>
> bansi a écrit :
>> Thanks Andrew. As suggested i have placed the snippet right above
>> <h:form>
>> <f:view>
>> <t:saveState id="save1" value="#{manufacturerBean.manufacturerList}"
>> />
>> <h:form id="manufacturerForm">
>>
>> It results in following exception
>> javax.faces.el.PropertyNotFoundException: /manufacturerForm.xhtml @23,75
>> value="#{manufacturerBean.manufacturerList}": Bean:
>> com.boeing.nmt.nams.view.bean.ManufacturerBean, property:
>> manufacturerList
>> (no write method for property!)
>>
>> I didnt understood what does it mean by "no write method for property!" .
>> I
>> do have getManufacturerList in backing bean
>>
>> Regards
>> Bansi
>>
>>
>>
>> Andrew Robinson-5 wrote:
>>
>>> How about <t:saveState value="#{manufacturerBean.manufacturerList}"
>>> />? If you are using a4j:region, you will need to make sure the save
>>> state tag in in the region (BTW - I haven't tested this).
>>>
>>> On 5/23/07, bansi <[EMAIL PROTECTED]> wrote:
>>>
>>>> I have following dropdown
>>>>
>>>> Code:
>>>>
>>>> <h:panelGrid columns="3" styleClass="detail" columnClasses="label">
>>>> <h:outputText value="Manufacturer" />
>>>>
>>>> <h:selectOneMenu id="manufList"
>>>> value="#{manufacturerBean.selectedManufacturer}" >
>>>> <f:selectItem itemLabel="New" itemValue="New" />
>>>>
>>>> <f:selectItems
>>>> value="#{manufacturerBean.manufacturerList}"
>>>> />
>>>> <a4j:support
>>>> action="#{manufacturerBean.loadManufacturerDetails}" event="onchange"
>>>> reRender="manufName,manufDescription,manufSource,btnSave,btnDelete" />
>>>> </h:selectOneMenu>
>>>> </h:panelGrid>
>>>>
>>>>
>>>> The perfomance issue is Whenever i pick a value from the dropdown it
>>>> results in 3 datbase calls
>>>> Here is the sequence of method calls
>>>> - First time the method in f:selectItems gets called which results in a
>>>> database call
>>>> <f:selectItems value="#{manufacturerBean.manufacturerList}" />
>>>> - Second time as expected/desired Ajax4JSF onchange event action method
>>>> gets
>>>> called
>>>> <a4j:support action="#{manufacturerBean.loadManufacturerDetails}"
>>>> event="onchange"
>>>> reRender="manufName,manufDescription,manufSource,btnSave,btnDelete" />
>>>> - Third time again the method in f:selectItems gets called which
>>>> results
>>>> in
>>>> a database call
>>>> <f:selectItems value="#{manufacturerBean.manufacturerList}" />
>>>>
>>>> I understand its due to JSF Lifcycle.
>>>>
>>>>
>>>> Any pointers/suggestion on how to Cache the method
>>>> getManufacturerList()
>>>> to
>>>> avoid unnecessary database calls will be highly appreciated
>>>>
>>>> Regards
>>>> Bansi
>>>>
>>>> --
>>>> View this message in context:
>>>> http://www.nabble.com/Caching-JSF-Dropdown-Results-tf3805830.html#a10770409
>>>> Sent from the MyFaces - Users mailing list archive at Nabble.com.
>>>>
>>>>
>>>>
>>>
>>
>>
>
>
>
--
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