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Thanks @Rohit Reddy for your response.​ .

But i am facing issue while implementing solution this into Dataweave.

Message        : Exception while executing: 

          td @(style:"text-align: center;"): $.status,

                            ^

Type mismatch for 'Value Selector' operator

   found :string, :name

 required :datetime, :name or

 required :localdatetime, :name or

 required :object, :name or

 required :time, :name or

 required :array, :name or

 required :date, :name or

 required :localtime, :name or

 required :period, :name.

Payload        : { "email": "abcb@hcl.com", "status" : "NO Id Avalible" }

Payload Type     : java.lang.String

Flow XML is: [Attached XML file]

<flow name="testerappFlow">

    <poll doc:name="Poll">

      <fixed-frequency-scheduler frequency="1" timeUnit="MINUTES"/>

      <set-payload value="{ "email": "abcb@hcl.com", "status" : "NO Id Avalible" }" doc:name="Set Payload"/>

    </poll>

    <set-variable variableName="payloadVar" value="#[]" doc:name="Variable"/>

    <expression-component doc:name="Expression"><![CDATA[flowVars.payloadVar.add(payload);]]></expression-component>

    <logger message="#flowVars ---- payload: #payload" level="INFO" doc:name="Logger"/>

    <dw:transform-message doc:name="Transform Message" metadata:id="8aad28c5-b6fd-456f-b409-870e8f92b1e5">

      <dw:input-variable doc:sample="sample_data\string_1.dwl" variableName="payloadVar"/>

      <dw:set-payload><![CDATA[%dw 1.0

%output application/xml

---

html :

  body :

    table @(border:1,cellpadding:1,

    cellspacing:1,style:"width:500px"):

      tbody : 

        tr : {

          td @(style:"text-align: center;"): "Email Id",

          td @(style:"text-align: center;"): "Update Status"

        } ++

        {(flowVars.payloadVar map {

          td @(style:"text-align: center;"): $.status,

          td @(style:"text-align: center;"): $.email

     }

        )}

        ]]></dw:set-payload>

    </dw:transform-message>

    <logger message="payload at End: #payload" level="INFO" doc:name="Logger"/>

  </flow>

@Ganesh Palani​ 

What is the need of creating a Java object reference directly?

If you just wants to accumulate the payloads from for loop, you can create an object a variable outside the for scope and append the values in for scope and use it later on.

Attaching example flow:

<flow name="testFlow1" doc:id="73a70eb2-9d8e-46b1-be71-694620e8f115" >
		<set-variable value="#[[]]" doc:name="myVar" doc:id="91444a89-bb1e-4287-b628-59e740a8b98c" variableName="myVar"/>
		<foreach doc:name="For Each (1 to 10)" doc:id="1b420d4f-0bf3-4c15-937a-b852016e0f33" collection="#[1 to 10]">
			<set-variable value="#[vars.myVar + payload]" doc:name="myVar" doc:id="7f24b408-afc8-4b44-95c7-e38ff2a438ae" variableName="myVar" />
		</foreach>
		<logger level="INFO" doc:name="Log myVar" doc:id="c762d992-6f79-4391-a410-354419bd11a1" message="#[output application/json --- vars.myVars]"/>
	</flow>

Regards,

Chetan

Yes, this happens because in the transform message you are setting the payload instead of the variable errorList. See the difference below. You will also notice i've added a default [] in the transformation. When you do it like this, there is no need to declare the set variable before the for each loop. (Since it will initialize itself as an empty array the first loop).

Your transformation:

Transformation as it should be:

Thank you Prathamesh, I resolved some syntax errors in your code <?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:ee="http://www.mulesoft.org/schema/mule/ee/core"

xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="

http://www.mulesoft.org/schema/mule/ee/core http://www.mulesoft.org/schema/mule/ee/core/current/mule-ee.xsd http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd">

<flow name="uniquesqnnumberFlow" doc:id="34bf7919-6a30-40a3-be29-1eb76d4c3cb5" >

<scheduler doc:name="Scheduler" doc:id="dd6cbd2e-0142-4177-a613-468266ab48c2" >

<scheduling-strategy >

<fixed-frequency frequency="2" timeUnit="MINUTES"/>

</scheduling-strategy>

</scheduler>

<ee:transform doc:name="Transform Message" doc:id="c72cc7b8-a11f-4348-903f-d238b25ed59a" >

<ee:message >

<ee:set-payload ><![CDATA[%dw 2.0

output application/json

---

[

{

"name":"india"

},

{

"name":"USA"

}]

]]></ee:set-payload>

</ee:message>

</ee:transform>

<set-variable value="#[]" doc:name="Set Variable" doc:id="44063b97-5699-473e-8178-15ecae31cbd8" variableName="FinalOutput"/>

<foreach doc:name="For Each" doc:id="d201c3e7-d7b0-404f-b57f-ec803120a589" collection="#payload">

<logger level="INFO" doc:name="Logger " doc:id="522ce86c-183d-45dd-95c5-0c1ace587713" message="#payload"/>

<ee:transform doc:name="Transform Message" doc:id="e554634d-8eb8-4caf-b6a5-3b723dd1faf4" >

<ee:message >

</ee:message>

<ee:variables >

<ee:set-variable variableName="FinalOutput" ><![CDATA[%dw 2.0

output application/json

---

vars.FinalOutput + payload]]></ee:set-variable>

</ee:variables>

</ee:transform>

</foreach>

<logger level="INFO" doc:name="Logger" doc:id="45146aa4-6e7b-4fab-b789-d122d92a791e" message="#vars.FinalOutput"/>

</flow>

</mule>

Hi @Xin Liu​ ,

Everything is fine just change the expression as following for your set variable, which you have inside foreach scope:

#[vars.responseArray + payload]

I hope it works for you.

Regards,

Lalit Panwar

Thanks @Rohit Reddy for your response.​ .

But i am facing issue while implementing solution this into Dataweave.

Message        : Exception while executing: 

          td @(style:"text-align: center;"): $.status,

                            ^

Type mismatch for 'Value Selector' operator

   found :string, :name

 required :datetime, :name or

 required :localdatetime, :name or

 required :object, :name or

 required :time, :name or

 required :array, :name or

 required :date, :name or

 required :localtime, :name or

 required :period, :name.

Payload        : { "email": "abcb@hcl.com", "status" : "NO Id Avalible" }

Payload Type     : java.lang.String

Flow XML is: [Attached XML file]

<flow name="testerappFlow">

    <poll doc:name="Poll">

      <fixed-frequency-scheduler frequency="1" timeUnit="MINUTES"/>

      <set-payload value="{ "email": "abcb@hcl.com", "status" : "NO Id Avalible" }" doc:name="Set Payload"/>

    </poll>

    <set-variable variableName="payloadVar" value="#[]" doc:name="Variable"/>

    <expression-component doc:name="Expression"><![CDATA[flowVars.payloadVar.add(payload);]]></expression-component>

    <logger message="#flowVars ---- payload: #payload" level="INFO" doc:name="Logger"/>

    <dw:transform-message doc:name="Transform Message" metadata:id="8aad28c5-b6fd-456f-b409-870e8f92b1e5">

      <dw:input-variable doc:sample="sample_data\string_1.dwl" variableName="payloadVar"/>

      <dw:set-payload><![CDATA[%dw 1.0

%output application/xml

---

html :

  body :

    table @(border:1,cellpadding:1,

    cellspacing:1,style:"width:500px"):

      tbody : 

        tr : {

          td @(style:"text-align: center;"): "Email Id",

          td @(style:"text-align: center;"): "Update Status"

        } ++

        {(flowVars.payloadVar map {

          td @(style:"text-align: center;"): $.status,

          td @(style:"text-align: center;"): $.email

     }

        )}

        ]]></dw:set-payload>

    </dw:transform-message>

    <logger message="payload at End: #payload" level="INFO" doc:name="Logger"/>

  </flow>