OSB, xquery and Assign issue

Question

Hello all
I have an issue that I cannot quite understand...
I have a very simple proxy service, that I would like to receive an xml of this form:
<SO so_att1="soatt" xsi:noNamespaceSchemaLocation="Split.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
     <MLI mli_att1="mli1att">
          <LI li_att1="li1_att1">
               <name>String</name>
               <value>String</value>
               <action>String</action>
          </LI>
          <LI li_att1="li2_att1">
               <name>String</name>
               <value>String</value>
               <action>String</action>
          </LI>
          <LI li_att1="li3_att1">
               <name>String</name>
               <value>String</value>
               <action>String</action>
          </LI>
          <LI li_att1="li4_att1">
               <name>String</name>
               <value>String</value>
               <action>String</action>
          </LI>
          <LI li_att1="li5_att1">
               <name>String</name>
               <value>String</value>
               <action>String</action>
          </LI>
          <name>String</name>
          <value>String</value>
          <action>String</action>
     </MLI>
</SO>
in order to transform it to a general data model of this form:
<CDM>
     <Item so_att="soatt" mli_att="mli1att">
          <name>MLI1_name</name>
          <value>MLI1_value</value>
          <action>MLI1_action</action>
     </Item>
     <Item so_att="soatt" mli_att="mli1att" li_att="li1att">
          <name>LI1_name</name>
          <value>LI1_value</value>
          <action>LI1_action</action>
     </Item>
     <Item so_att="soatt" mli_att="mli1att" li_att="li2att">
          <name>LI2_name</name>
          <value>LI2_value</value>
          <action>LI2_action</action>
     </Item>
     <Item so_att="soatt" mli_att="mli1att" li_att="li3att">
          <name>LI3_name</name>
          <value>LI3_value</value>
          <action>LI3_action</action>
     </Item>
     <Item so_att="soatt" mli_att="mli1att" li_att="li4att">
          <name>LI4_name</name>
          <value>LI4_value</value>
          <action>LI4_action</action>
     </Item>
     <Item so_att="soatt" mli_att="mli1att" li_att="li5att">
          <name>LI5_name</name>
          <value>LI5_value</value>
          <action>LI5_action</action>
     </Item>
</CDM>
The common idea is to split the XML in to pieces with attributes inheritance. I have created 3 Assign actions. the 1st one has the xquery for seperating the MLI nodes with the correct attribues:
for $i in (1 to fn:count($body/MLI))
return
<Item so_att1 = "{ data($body/@so_att1) }"
mli_att1 = "{ data($body/MLI[$i]/@mli_att1) }">
for $name in $body/MLI[$i]/name
return
<name>{ data($name) }</name>
for $value in $body/MLI[$i]/value
return
<value>{ data($value) }</value>
for $action in $body/MLI[$i]/action
return
<action>{ data($action) }</action>
</Item>
And it is saved in variable MLI
The 2nd one is similar to this and saves to variable LI while the 3rd assign concats the variables like this: fn:concat('<CDM>', $MLI, $LI, '</CDM>') and saves in new variable...
My problem comes, when I run on server the proxy. It is echoing (of course, cause there is no routing) but the incoming message passes only from third assign, ignoring the first and the second... Any idea why this is happening? The xqueries while tested inside the XQuery editor, works like charm...
Thank you in advance

Answer 1

Not sure if this is what you mean, but if you want to store elements in a variable during your XQuery you can use the "let" command.
This way you can use them during your Xquery but it doesn't replace the Assign or Replace action in your message flow.
let $x := 1
let $y := $x + 1