Contribute to "File" core DocumentType to add extra metadata

[yayo_]

hi @ all,

I'm tring to add extra data to "File" core DocumentType. To achive this i have created a schema with extra informations. like:

<xs:schema
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://nuxeo.com/schemas/com/nuxeo/myproject/metadata/extra/"
  xmlns:nxs="http://nuxeo.com/schemas/com/nuxeo/myproject/metadata/extra/"
  >
 
    <xs:element name="test1" type="xs:string"/>
    <xs:element name="test2" type="xs:string"/>   
</xs:schema>

And added a contrib xml file for extend "schema" and "doctype":

<extension target="org.nuxeo.ecm.core.schema.TypeService" point="schema">
    <schema name="extra" src="schemas/extra.xsd" prefix="extra" />
  </extension>
 
  <extension target="org.nuxeo.ecm.core.schema.TypeService" point="doctype">
    <doctype name="File" extends="Document">
      <schema name="common"/>
      <schema name="uid"/>
      <schema name="dublincore"/>
      <schema name="file"/>
      <schema name="file_schema"/>
      <schema name="files"/>
      <schema name="extra"/>
      <facet name="Versionable"/>
    </doctype>
  </extension>

Also, i have created a new table to add extra metadata and i have added the contrib in the xml file:

  <extension target="org.nuxeo.ecm.directory.sql.SQLDirectoryFactory" point="directories">
    <directory name="myextrametadata">
      <schema>vocabulary</schema>
      <dataSource>java:/nxsqldirectory</dataSource>
      <cacheTimeout>3600</cacheTimeout>
      <cacheMaxSize>1000</cacheMaxSize>
      <table>my_extrametadata</table>
      <idField>id</idField>
      <autoincrementIdField>true</autoincrementIdField>
      <dataFile>directories/myextrametadata-def.csv</dataFile>
      <createTablePolicy>on_missing_columns</createTablePolicy>
    </directory>
  </extension>

I want to add extra metadata that no one (using webinterface) can use, but that can be usable by me via nuxeo automation client. Using a call like:

PropertyMap props = new PropertyMap();
props.set("dc:title","MyTest");
props.set("dc:description", "Descr of my Test");
props.set("extra:test1", "myextrainfo");
    			
nuxeosession.newRequest("Document.Create").setInput(new PathRef(workspacepath)).set("type", "File").set("name", "MyTest").set("properties", props).execute();

But when i try to create a "File" into workspace via Web user interface i have a runtime error with this full stacktrace:

To make more readable the post i have pasted the stacktrace here: http://pastebin.com/7pCzE26Z

Can you help me? There is a way to "extend" metadata for Document Type "File" ? What's my fault?

Thank you!!!

I have followed this nuxeo official howto: http://doc.nuxeo.com/display/NXDOC/How-to+configure+document+types%2C+actions+and+operation+chains#H...

[bruce_Grant]

can you share or just send me your config files (bruce@concena.com) and I will have a look later today

[yayo_]

what kind of config file? Every config file i have created are added to the first answer. Are you think that i missed some config file or other stuff to create my contrib bundle? I have followed all the steps from official howto, only the widget creation and user interface is (intentionally) not added because i want access this extra information only via automation client (more general via CMIS)

[bruce_Grant · Accepted solution]

Ok, I tried your base schema and doc contribs on a test 5.6 system and they worked.

schema file:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" 
		   targetNamespace="http://nuxeo.com/schemas/com/nuxeo/myproject/metadata/extra/"
		   xmlns:extra="http://nuxeo.com/schemas/com/nuxeo/myproject/metadata/extra/">

	<xs:element name="test1" type="xs:string" />
	<xs:element name="test2" type="xs:string" />
</xs:schema>

And the schema/doc contrib:

<?xml version="1.0" encoding="UTF-8"?>
<component name="test">

	<require>org.nuxeo.ecm.directory.types</require>
	<require>org.nuxeo.runtime.started</require>

	<extension target="org.nuxeo.ecm.core.schema.TypeService" point="schema">
		<schema name="extra" src="data/schemas/extra.xsd" prefix="extra" />
	</extension>

	<extension target="org.nuxeo.ecm.core.schema.TypeService" point="doctype">
		<doctype name="File" extends="Document">
			<schema name="common" />
			<schema name="uid" />
			<schema name="dublincore" />
			<schema name="file" />
			<schema name="files" />
			<schema name="extra" />
			<facet name="Versionable" />
		</doctype>
	</extension>

</component>

I had to remove the "file_schema" schema because I dont have that defined. I created a new File doc and confirmed in Postgres that the extra table is created. So if your contribs look like those above then they are not the issue.

[yayo_]

Ok, confirm that now works for me! So thank you for your time, you are my guru now! 🙂

I don't know why but i think that in the last part of my test i have missed the "files" schema and all other works broke against this problem. In the meanwhile i have decided to create another File Type but, in my latest test, i have tried to extend "File" (based on my first question) and all works fine 🙂 So:

1. Duble check every time that all core schema are imported
2. Enable extra logging
3. Enable for contrib
4. When you have an exception like this, you miss something [1]
5. Bruce is always right 🙂

Thank you!

[1]

Caused by: org.nuxeo.ecm.core.api.WrappedException: Exception: java.lang.NullPointerException. message: null
            at org.nuxeo.ecm.core.api.impl.DataModelImpl.getSchema(DataModelImpl.java:86)
            at org.nuxeo.ecm.core.api.impl.DocumentModelImpl.addDataModel(DocumentModelImpl.java:569)