Restful: Child lov with parent prompt

Question

I have 2 dimensions, Parent and Child. The list of values of the Child dimension contains a prompt on the parent. With restful, I want to the the list of values for the child dimension. I've created a webi document with a prompted filter on the Child dimension. So I have 2 prompts one the webi document, one from the Child dimension and one from the list of values of the child dimension.
A call GET http://{hostname}:6405/biprws/raylight/v1/documents/{documentID}/parameters/{parameterID} for the child prompt returns the expected xml:
<lov hierarchical="false" refreshable="true">
<id>UNIVERSELOV_DS0.DO4</id>
<parameters>
<id>0</id>
</parameters>
</lov>
where 0 is the id of the parent dimension
I then use the resful call PUT http://{hostname}:6405/biprws/raylight/v1/documents/{documentID}/parameters/{parameterID} to answer the parent and the child's lov.
When the prompt on the parent in the list of values is not optional, everything is fine but when the prompt is optional, I get the error :
Bad Request WSR 00102 - Illegal argument (Suspicious identifier(s): [0])
In both case, I use the input xml (with true or false value for optional attribute of parameter):
<parameters>
     <parameter optional="true|false">
          <id>0</id>
          <answer>
               <values><value id="10" >Parent 10</value></values>
          </answer>
     </parameter>
     <parameter>
          <id>1</id>
          <answer>
               <info><lov><query intervalId="0" intervalSize="10000" /></lov></info>
          </answer>
     </parameter>
</parameters>
If I use the refresh="true" attribute to the query tag, I don't get any value for the child lov only:
<lov hierarchical="false" refreshable="true">
<id>UNIVERSELOV_DS0.DO4</id>
</lov>
Any ideas?

Answer 1

Eric,
I hope it's not an issue but an invalid input XML.
I just made some good progress. The restful documentation states that "The <info> element is not mandatory in the XML inputs, except in the case of cascading parameters and hierarchical parameters.", so I surround the values tag by a info tag and it almost works in both cases (mandatory and optional parent prompt). The XML input is
<parameters>
   <parameter>
      <id>0</id>
      <answer>
         <info>
            <lov>
               <query intervalSize="-1" />
            </lov>
         </info>
         <values>
            <value id="1">Parent 1</value>
            <value id="3">Parent 2</value>
         </values>
      </answer>
   </parameter>
   <parameter>
      <id>1</id>
      <answer>
         <info>
            <lov>
               <query intervalSize="-1" />
            </lov>
         </info>
      </answer>
   </parameter>
</parameters>
But one problem solves, one problem raises. When a answer no parent value (<values></values>), I get in return of a PUT call, the same result as a GET call:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<parameters>
    <parameter dpId="DP0" type="prompt" optional="false">
        <id>0</id>
        <technicalName>pmParent(s)?</technicalName>
        <name>Parent(s)?</name>
        <answer type="Text" constrained="true">
            <info cardinality="Multiple">
                <lov refreshable="true" partial="false" hierarchical="false">
                    <id>UNIVERSELOV_DS0.DO1</id>
                    <updated>2014-10-09T12:54:54.000+01:00</updated>
                    <values>
                        <value id="1">Parent 1</value>
                        <value id="2">Parent 2</value>
                        <value id="3">Parent 3</value>
                    </values>
                    <columns mappingId="0">
                        <column type="String" id="0">Parent </column>
                    </columns>
                </lov>
                <previous>
                    <value id="1">Parent 1</value>
                    <value id="3">Parent 2</value>
                </previous>
            </info>
            <values>
                <value id="1">Parent 1</value>
                <value id="3">Parent 2</value>
            </values>
        </answer>
    </parameter>
    <parameter dpId="DP0" type="prompt" optional="true">
        <id>1</id>
        <technicalName>pmChild(ren)?</technicalName>
        <name>Child(ren)?</name>
        <answer type="Text" constrained="true">
            <info cardinality="Multiple">
                <lov refreshable="true" hierarchical="false">
                    <id>UNIVERSELOV_DS0.DO3</id>
                    <parameters>
                        <id>0</id>
                    </parameters>
                </lov>
                <previous>
                    <value id="21">Child 21 - 2</value>
                </previous>
            </info>
            <values>
                <value id="21">Child 21 - 2</value>
            </values>
        </answer>
    </parameter>
</parameters>
Nevertheless, I get a workaround for this situation, instead of not answering the parameter, I have to answer all possible values. It's not a nice solution and I hope a better one exists.
The results are the same with
http://{hostname}:6405/biprws/raylight/v1/documents/{documentID}/parameters/{parameterID}/
and with
http://{hostname}:6405/biprws/raylight/v1/documents/{documentID}/parameters/
except, of course that when using first url, the return xml contains only one parameter (the one in the url)
Regards