Add new Foreach mediator

[SanojPunchihewa]

Purpose

Add new Foreach mediator which will iterate collection referred using body or variable and update the original collection or output the result to a variable.

Syntax

<foreach collection="expression" parallel-execution=(true | false) result-target=(variable) result-type="JSON" >
        <sequence>
        (mediator)+
        </sequence>+
</foreach>

Sample configuration

1. Output iteration results to variable

<foreach collection="${payload.data.list}" result-target="fileList" result-type="JSON" parallel-execution="true">
    <sequence>
        <log category="INFO">
            <message>Processing message : ${payload} with counter : ${var.counter}</message>
        </log>
        <payloadFactory media-type="json">
            <format><![CDATA[{
                "_name": ${payload.name},
                "age": 5
                }]]>
                </format>
        </payloadFactory>
        <call> 
            <endpoint>
                <http method="post" uri-template="http://localhost:5454/api/pet1"/>
            </endpoint>
        </call>
    </sequence>
</foreach>

2. Update the original collection

<foreach collection="${var.folderList}" parallel-execution="true">
    <sequence>
        <log category="INFO">
            <message>Processing message : ${payload}</message>
        </log>
        <call>
            <endpoint>
                <http method="post" uri-template="http://localhost:5454/api/transform">
                </http>
            </endpoint>
        </call>
    </sequence>
</foreach>