webapi confuses workpiece properties with process identifiers

[Ralf Claussnitzer]

Requesting the Web API URL /processes delivers a confusing process description:

<goobiProcesses>
   <goobiProcess>
     <identifier>331024802</identifier>
     <title>Disputatio, Materiam Testamentorvm breuiter complectens</title>
   </goobiProcess>
   <!-- ... -->
<goobiProcesses>

1- The "identifier" given here is really a property of the physical workpiece and NOT the process identifier.
2- The "title" element also states a property of the physical workpiece and NOT the process title.

This is confusing, as Goobi UI itself only tells about process title and its database identifier. A proper fix should clarify this by stating the correct fields in the XML (as well JSON) output:

<goobiProcesses>
   <goobiProcess href="/processes/20854">
     <id>20854</identifier>
     <title>testbco_331024802</title>
   </goobiProcess>
   <!-- more processes -->
<goobiProcesses>

While /process/<id> still refers to a specific process resource, the list resource /processes should be usable with additional query parameters for finding processes by workpiece value, e. g. /processes?workpiece.name="PPN digital a-Satz"&workpiece.value="331024802".

To be REST-ful the output should state a separate link to the related workpieces and physicalTemplates resources, additionally returning some of the workpiece properties as a shortcut in the full project description:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<goobiProcess>
  <id>20854</id>
  <title>testbco_331024802</title>
  <physicalTemplates href="/process/20854/physicalTemplates">
     <physicalTemplate id="1">
       <property name="Titel" value="Disputatio, Materiam Testamentorvm breuiter complectens"/>
       <!-- more common properties -->
     </physicalTemplate>
  </physicalTemplates>
  <workpieces href="/processes/20854/workpieces">
    <workpiece id="1">
       <property name="PPN digital a-Satz" value="331024802"/>
       <!-- more common properties -->
  </workpieces>
</goobiProcess>