topic Re: Contribute to "File" core DocumentType to add extra metadata in Nuxeo Forum

Contribute to "File" core DocumentType to add extra metadata

yayo_ — Fri, 19 Oct 2012 11:49:10 GMT

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#How-toconfiguredocumenttypes,actionsandoperationchains-Extensionofmetadata

Re: Contribute to "File" core DocumentType to add extra metadata

bruce_Grant — Fri, 19 Oct 2012 13:12:21 GMT

Try adding a at the beginning of your contribution to ensure that system defined File is properly overridden... see below

<?xml version="1.0"?>
<component name="com.concena.test.doctypes.contrib">

	<require>org.nuxeo.runtime.started</require>
    <extension target="....

Re: Contribute to "File" core DocumentType to add extra metadata

yayo_ — Fri, 19 Oct 2012 14:33:36 GMT

Thanks for your answer...

Re: Contribute to "File" core DocumentType to add extra metadata

bruce_Grant — Fri, 19 Oct 2012 14:50:15 GMT

Not sure this is it but I would change the namespace in the schema definition

Re: Contribute to "File" core DocumentType to add extra metadata

yayo_ — Fri, 19 Oct 2012 15:39:34 GMT

change nxs to extra doesn't solve the problem

Re: Contribute to "File" core DocumentType to add extra metadata

yayo_ — Fri, 19 Oct 2012 15:54:28 GMT

Same error with SDK 5.6

Re: Contribute to "File" core DocumentType to add extra metadata

bruce_Grant — Fri, 19 Oct 2012 16:50:50 GMT

I haven't followed either of these examples but I customize File on almost every Nuxeo project so I know that customizing File does work. Do you see any useful errors in the server startup log? Have you turned on additional startup logging (in Nuxeo server in the lib/log4j.xml file uncomment the following...

Re: Contribute to "File" core DocumentType to add extra metadata

bruce_Grant — Fri, 19 Oct 2012 16:51:56 GMT

  <!-- Uncomment for fragments pre-processing -->
  <!--
  <category name="org.nuxeo.runtime.deployment.preprocessor">
    <priority value="INFO" />
  </category>
  -->

and

  <!-- Uncomment for components registration info -->
  <!--
  <category name="org.nuxeo.runtime.model.impl">
    <priority value="INFO" />
  </category>
  -->

Re: Contribute to "File" core DocumentType to add extra metadata

yayo_ — Fri, 19 Oct 2012 17:41:13 GMT

have u seen my config file to contrib to "File" DocType and think that all is right? I have enabled the extra logging (thank for info) but i don't have any error or extra info to resolve my issue. same error and, with sdk 5.6, i have this log when i try to reload my bundle

Re: Contribute to "File" core DocumentType to add extra metadata

yayo_ — Mon, 22 Oct 2012 09:23:10 GMT

I have tried to change config files, redefing the environment, start from new IDE and from new Nuxeo installation. I have double check every config file but, only differences between the example and my component is that my component add extra metadata "hidden" (so can be used only via nuxeo automation not via we user interface) so i don't implemented the new widget and the new layout.

Re: Contribute to "File" core DocumentType to add extra metadata

bruce_Grant — Mon, 22 Oct 2012 15:12:32 GMT

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

Re: Contribute to "File" core DocumentType to add extra metadata

yayo_ — Tue, 23 Oct 2012 17:44:57 GMT

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)

Re: Contribute to "File" core DocumentType to add extra metadata

bruce_Grant — Thu, 25 Oct 2012 14:45:56 GMT

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.

Re: Contribute to "File" core DocumentType to add extra metadata

yayo_ — Thu, 25 Oct 2012 15:19:17 GMT

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:

Duble check every time that all core schema are imported
Enable extra logging
Enable for contrib
When you have an exception like this, you miss something [1]
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)