Using REST v2's PATCH method to modify the "resource" field of a ReportUnit

{
 "version":0,
 "patch":[ { "field":"resources", "value":"[URI OF RESOURCE HERE]"
           } ]
}

I got the error:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

    <errorDescriptor>
        <errorCode>patch.failed</errorCode>
        <message>
            EL1010E:(pos 0): Field or property resources cannot be set on object of type com.jaspersoft.jasperserver.dto.resources.ClientReportUnit
        </message>
    <parameters>
        <parameter>
            resources = &quot;[URI OF RESOURCE HERE]&quot;
        </parameter>
    </parameters>
</errorDescriptor>

Resolution

Use this JSON syntax:

{
 "version":0,
 "patch":[ { "expression": "files.put('test_file', new com.jaspersoft.jasperserver.dto.resources.ClientReference().setUri('/public/Samples/Resources/Images/ico-library.jpg'))"
           } ]
}

"files" is used instead of "resources" because ClientReportUnit doesn't have any "resources" field.

It has a "files" field, which is java.util.Map, and it's being mapped to "resources" for convenience.

You can look in our jasperserver-dto package to see the actual Java structure of classes to patch.

The PATCH Method was introduced in JasperReports Server v5.5, and it is discussed in the Web Services Guide PDF that comes with JasperReports Server.

Ref. Case 00057949