WSO2 Enrich array - wso2

Question

I'm using WSO2 ESB (4.8.1) and I need transform this payload:
[
{
"id":"1",
"budget":"a"
},
{
"id":"2",
"bidget:"b"
}
]
in this one using enrich mediator (if it's possible):
[
{
"id":"1",
"budget":"a",
"result":"1-a"
},
{
"id":"2",
"bidget:"b",
"result":"2-b"
}
]
Any suggestion?
Thanks in advance

Answer 1

Take a look a this sample:
Input file:
<?xml version="1.0" encoding="UTF-8" ?>
<employees>
<root>
<id>1</id>
<budget>a</budget>
</root>
<root>
<id>2</id>
<budget>b</budget>
</root>
<root>
<id>3</id>
<budget>c</budget>
</root>
</employees>
My xslt:
<?xml version='1.0' ?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<employees>
<xsl:for-each select="employees/root">
<root>
<id>
<xsl:value-of select="id"/>
</id>
<budget>
<xsl:value-of select="budget"/>
</budget>
<result>
<xsl:value-of select="concat(id,'-',budget)"/>
</result>
</root>
</xsl:for-each>
</employees>
</xsl:template>
</xsl:stylesheet>
Output file:
<?xml version="1.0" encoding="UTF-8" ?>
<employees>
<root>
<id>1</id>
<budget>a</budget>
<result>1-a</result>
</root>
<root>
<id>2</id>
<budget>b</budget>
<result>2-b</result>
</root>
<root>
<id>3</id>
<budget>c</budget>
<result>3-c</result>
</root>
</employees>
So you can use an xslt mediator in WSO2 ESB(https://docs.wso2.com/display/ESB490/XSLT+Mediator ) and this configuration or similar and work with your definitions.
Regards.

Answer 2

I think when you don't know about the length of array you con't transform it with enrich or payloadFactory. I found same problem in WSO2 ESB document. this JS function transform an array of objects.
function transform(mc) {
payload = mc.getPayloadJSON();
results = payload.results;
var response = new Array();
for (i = 0; i < results.length; ++i) {
location_object = results[i];
l = new Object();
l.name = location_object.name;
l.tags = location_object.types;
l.id = "ID:" + (location_object.id);
response[i] = l;
}
mc.setPayloadJSON(response);
}
See scipte mediator in this link for more information.