Retrieve and update using 2 webservices in ADF

Question

Hello,
We are trying to build an application using ADF and struts with jDeveloper 10.1.2.20. We use webservices to go between the model and view layers.
We have for instance a webservice to retrieve data using 1 parameter, and another different webservice to update a tablerow.
We can get a JSP page to show us the data using the first webservice. (Build a Datapage, called from a DataAction to fill the parameter).
And we can build another JSP page to update a row using the second webservice. (Build a Datapage, create a new DataControl to select the appropriate fields and send them to a DataAction by using an event with ${bindings.MyDataControl_Iter.currentRow.dataProvider})
Both pages are built by implementing tutorials and examples from the Oracle page and forum.
The problem is, that we cannot get our application to do both. Get the data from the first webservice and show it, then alter some of the values and submit it to the second webservice to update the table.
Does anybody know anything about this problem and have a solution? Maybe in the form of an example.
Kind regards,

Answer 1

Hello Shay,
unfortunately changing the NDValue (of one NamedData in myDataWrite MethodAction) is not working for me, although I tried it with a lot of values: constants, values from the binding of the reader service and values from a (session-scope) backing bean. However, the input field always remains empty :(
Here is my pagedef:
<?xml version="1.0" encoding="UTF-8" ?>
<pageDefinition xmlns="http://xmlns.oracle.com/adfm/uimodel"
version="10.1.3.41.57" id="myDataPageDef"
Package="viewcontroller.pageDefs">
<parameters/>
<executables>
<variableIterator id="variables">
<variable Type="java.lang.String" Name="myDataWrite_myData_ParameterOne"
IsQueriable="false"/>
<variable Type="java.lang.String" Name="myDataWrite_myData_ParameterTwo"
IsQueriable="false"/>
</variableIterator>
<methodIterator id="myDataIter" Binds="myData.result" DataControl="myDC"
RangeSize="10" BeanClass="myDC.myData"/>
<accessorIterator id="resultIterator" RangeSize="10" Binds="result"
DataControl="myDC" BeanClass="myDC.myData.result"
MasterBinding="myDataIter"/>
</executables>
<bindings>
<methodAction id="myData" InstanceName="myDC" DataControl="myDC"
MethodName="myData" RequiresUpdateModel="true" Action="999"
IsViewObjectMethod="false"
ReturnName="myDC.methodResults.myDC_myData_result">
<NamedData NDName="dataId"
NDValue="${backing_session.currentDataId}"
NDType="java.lang.String"/>
</methodAction>
<attributeValues id="ParameterOne" IterBinding="resultIterator">
<AttrNames>
<Item Value="ParameterOne"/>
</AttrNames>
</attributeValues>
<attributeValues id="ParameterTwo" IterBinding="resultIterator">
<AttrNames>
<Item Value="ParameterTwo"/>
</AttrNames>
<methodAction id="myDataWrite" MethodName="myDataWrite" RequiresUpdateModel="true"
Action="999" IsViewObjectMethod="false" DataControl="myDC"
InstanceName="myDC"
ReturnName="myDC.methodResults.myDC_myDataWrite_result">
<NamedData NDName="myData_ParameterOne" NDType="java.lang.String"
NDValue="${bindings.myDataWrite_myData_ParameterOne"/>
<NamedData NDName="myData_ParameterTwo" NDType="java.lang.String"
NDValue="${bindings.myDataWrite_myData_ParameterTwo"/>
</methodAction>
<attributeValues id="myData_ParameterOne" IterBinding="variables">
<AttrNames>
<Item Value="myDataWrite_myData_ParameterOne"/>
</AttrNames>
</attributeValues>
<attributeValues id="myData_ParameterTwo" IterBinding="variables">
<AttrNames>
<Item Value="myDataWrite_myData_ParameterTwo"/>
</AttrNames>
</attributeValues>
</bindings>
</pageDefinition>
(BTW, I'm not sure what is the correct EL expression to reference myData method's ParameterOne and ParameterTwo output.)
Can you explain me how to make this work?
It would be great to avoid unnecessary and complex coding in the backing beans.
Thanks,
Patrik