Found duplicate property definition...

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kbryd

Hi

I have just started looking into Alfresco and here is a problem I have. I have created these three types:

* fa:base_document - this is a base type which contains some common attributes:

   

 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <type name="fa:base_document">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <title>Base Document</title>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parent>cm:content</parent>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <properties>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property name="fa:documentType">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <type>d:text</type>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </property>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property name="fa:productRef">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <type>d:text</type>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </property>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property name="fa:description">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <type>d:text</type>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </property>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </properties>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </type>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

* fa:document - this is my document type, this adds only approvedOn attribute

&nbsp;&nbsp;&nbsp;&nbsp; <type name="fa:document">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <title>Document</title>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parent>fa:base_document</parent>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <properties>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property name="fa:approvedOn">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <type>d:date</type>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </property>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </properties>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </type>‍‍‍‍‍‍‍‍‍‍

* fa:folder - this is my new folder type, adds two attributes (approvedOn can be set when all documents in this folder are also approved)

&nbsp;&nbsp;&nbsp; <type name="fa:folder">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <title>Folder</title>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <parent>cm:folder</parent>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <properties>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property name="fa:productRef">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <type>d:text</type>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </property>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <property name="fa:approvedOn">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <type>d:date</type>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </property>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </properties>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </type>
‍‍‍‍‍‍‍‍‍‍‍‍‍‍

As you can see there is a faroductRef attribute both in fa:document and in fa:folder - this is a field which is common for these two types.

Now, when I validate this model I get:

kbryd@mob:~/tmp/alfresco/tomcat$ ./modelValiddate.sh
Testing dictionary model definitions…
alfresco/model/dictionaryModel.xml
alfresco/model/systemModel.xml
org/alfresco/repo/security/authentication/userModel.xml
alfresco/model/contentModel.xml
alfresco/model/wcmModel.xml
alfresco/model/applicationModel.xml
alfresco/model/bpmModel.xml
alfresco/extension/testModel.xml
Found an invalid model…
Could not import bootstrap model alfresco/extension/testModel.xml
Failed to compile model fa:testmodel
Found duplicate property definition faroductRef within class fa:folder and class fa:base_document


I have read somewhere that the name of attribute must be globally unique, but I don't understand why and first of all how one should proceed in such situations like mine (I don't like the idea to change name of a property each time)? Should I create an aspect instead of that attribute?

Thanks
Karol

jbarmash

The real issue here is the namespace applied in your model to make things unique, not the types per se.  If I define

   <namespaces>
      <namespace uri="custom.model" prefix="custom"/>
   </namespaces>

     <types>
         <type name="customressrelease">

Then I can only have one customressrelease in that model.  If you need to utilize the same attribute name across types, you should either leverage:
•   Subtyping / inheritance
•   aspects
If applicable, or in any case – you can always create a separate model with its own namespace to avoid the clash.