Can we set an array in WSO2ESB?

Question

I wish to set an array in WSO2ESB in my scenario.

I am sending two parameters to database and getting number of rows but I need only one row.

My configuration is

<target>
               <sequence>
                  <property name="partybranchid"
                            expression="get-property('partybranchid')"
                            scope="default"
                            type="STRING"/>
                  <payloadFactory>
                     <format>
                        <p:Select_MailDetails_Op xmlns:p="http://ws.wso2.org/dataservice">
                           <xs:assetid xmlns:xs="http://ws.wso2.org/dataservice">$1</xs:assetid>
                           <xs:partybranchid xmlns:xs="http://ws.wso2.org/dataservice">$2</xs:partybranchid>
                        </p:Select_MailDetails_Op>
                     </format>
                     <args>
                        <arg expression="get-property('assetid')"/>
                        <arg expression="get-property('partybranchid')"/>
                     </args>
                  </payloadFactory>
<log level="full"/>
                  <send receive="Mail_Seq">
                     <endpoint>
                        <address uri="http://localhost:9764/services/massetparametersetdetail_DataService/"
                                 format="soap11"/>
                     </endpoint>
                  </send>
               </sequence>
            </target>

and I am receiving data in this sequence:

<log><property xmlns:v="http://ws.wso2.org/dataservice" xmlns:ns="http://org.apache.synapse/xsd"
             name="primarymail" action="set"
             expression="//v:primarymail/text()"
             scope="default"
             type="STRING"/></log>
 <iterate xmlns:v="http://ws.wso2.org/dataservice"
            xmlns:ns="http://org.apache.synapse/xsd"
            id="Mail"
            expression="//v:Datalist">
      <target>
         <sequence>
            <property xmlns:v="http://ws.wso2.org/dataservice" xmlns:ns="http://org.apache.synapse/xsd"
             name="primarymail"
             expression="//v:primarymail/text()"
             scope="default"
             type="STRING"/>
           <property xmlns:ns="http://org.apache.synapse/xsd"
             name="assetname"
             expression="//assetname/text()"
             scope="default"
             type="STRING"/>
<property xmlns:ns="http://org.apache.synapse/xsd"
             name="assetcode"
             expression="//assetcode/text()"
             scope="default"
             type="STRING"/>
   <property xmlns:ns="http://org.apache.synapse/xsd"
             name="activityname"
             expression="//activityname/text()"
             scope="default"
             type="STRING"/>
   <property xmlns:ns="http://org.apache.synapse/xsd"
             name="username"
             expression="//username/text()"
             scope="default"
             type="STRING"/>
   <property xmlns:ns="http://org.apache.synapse/xsd"
             name="parametername"
             expression="//parametername/text()"
             scope="default"
             type="STRING"/>
   <property xmlns:ns="http://org.apache.synapse/xsd"
             name="uomcode"
             expression="//uomcode/text()"
             scope="default"
             type="STRING"/>
<property xmlns:ns="http://org.apache.synapse/xsd"
             name="tododetails"
             expression="fn:concat('AssetName:',get-property('assetname'),',','AssetCode:',get-property('assetcode'),',','ActivityName:',get-property('activityname'),',','UserName:',get-property('username'),',','ParameterName:',get-property('parametername'),',','UomCode:',get-property('uomcode'))"
             scope="default"
             type="STRING"/>
 <log><property xmlns:v="http://ws.wso2.org/dataservice" xmlns:ns="http://org.apache.synapse/xsd"
             name="primarymail" action="set"
             expression="//v:primarymail/text()"
             scope="default"
             type="STRING"/></log>
             </sequence>
      </target>
   </iterate>
   </sequence>

and I am getting response like below but I want to send a mail only once.

Here my mailid is repeating. How can I take out this mail id?

response, primarymail = mail@myunisoft.commail@myunisoft.commail@myunisoft.commail@myunisoft.commail@myunisoft.commail@myunisoft.commail@myunisoft.commail@myunisoft.commail@myunisoft.commail@myunisoft.com

How can I take single mail for this?

Answer 1

Your webservice response is a SOAP message and What you get in to any mediator in ESB, is that particular incoming message. You cannot directly have an array of values. - One option is to use a class mediator and extract your desired value/s and set that value to a property in message context and use it.
- if the response payload can be altered in your scenario, return the response with a known delimiter and use xpath String operations to get your value.