Iterate Mediator over json arrays - json

Question

I'd like to iterate the results array of a json message
{
"results":[
{
"category":"mdl",
"subcategory":"ip",
"ip":"103.14.120.121",
"subtype":"IP-MDL",
"date":"1405074556",
"longitude":"75.3333",
"latitude":"19.8833",
"country":"India",
"city":"Aurangabad",
"organization":"Good Domain Registry Private Limited",
"isp":"Good Domain Registry Private Limited"
},
{
"category":"mdl",
"subcategory":"ip",
"ip":"108.162.198.96",
"subtype":"IP-MDL",
"date":"1405074556",
"longitude":"-122.3933",
"latitude":"37.7697",
"country":"United States",
"city":"San Francisco",
"organization":"CloudFlare",
"isp":"CloudFlare"
}
]
}
unfortunately iteration mediator doesn't seem to accept non xpath expression
anyone knows how to iterate over the previous message json results the same way i do it in xml ?
I'd like to use ESB json-native support but doesn't seem to be able to break down json messages as with XML (i've tried iterate mediator, json payload factory and script mediator without any success)
<iterate expression="json-eval(results)">
<target>
<sequence>
<property name="messageType" value="application/json" scope="axis2"/>
<payloadFactory media-type="json">
<format>
{
"event":{
"providerName":"$1",
"providerSource":"$2",
"providerClassification":"$3",
"providerVersion":"$4",
"body":{
"results":{$5}
}
}
}
</format>
<args>
<arg value="bdigital"/>
<arg evaluator="json" expression="$.results.category"/>
<arg evaluator="json" expression="$.results.subcategory"/>
<arg value="1.0"/>
<arg evaluator="json" expression="$.results"/>
</args>
</payloadFactory>
<call>
<endpoint>
<http method="post"
uri-template="http://BD-VM-PP-CIC01:8280/services/CICQueue"/>
</endpoint>
</call>
</sequence>
</target>
</iterate>
thanks in advance,

Answer 1

You could do the following?
<property name="messageType" value="application/xml" scope="axis2" type="STRING"></property>
<iterate xmlns:ns="http://org.apache.synapse/xsd" continueParent="true" expression="//jsonObject/results" id="MyIterator">
<target>
<sequence>
<property name="cat" expression="json-eval($.results.category)" type="STRING"></property>
etc.

Answer 2

There is a new version in WSO2 EI in which you can iterate over JSON using JSON Path. You can do something like below.
<iterate id="iterate-over-users" preservePayload="true" attachPath="json-eval($.results)" expression="json-eval($.results)">
<target>
<sequence>
<send>
<endpoint>
<http method="POST" uri-template="http://backend.com"/>
</endpoint>
</send>
</sequence>
</target>
</iterate>
Refer to the following blog for more info. https://medium.com/#arunans23/iterate-over-json-payload-with-wso2-enterprise-integrator-8ccb9cdd2c70