[Dspace-general] Repeatable dc-elements?

[Platt, Alice]

Hi Yuri,

One or both of your elements should also have a qualifier in order to make a distinction between the two. So, for example, the second element that you want to use for subject could have the qualifier "keyword" so that the metadata element becomes "subject.keyword". Then DSpace will understand that the "subject" and the "subject.keyword" are two distinct elements.

Alice Platt
Digital Initiatives Librarian
Shapiro Library
Southern New Hampshire University
2500 North River Rd
Manchester, NH 03106
USA

Date: Wed, 1 Jul 2009 16:01:53 -0300
From: Yuri <yuricardenas at gmail.com>
Subject: Re: [Dspace-general] Repeatable dc-elements?
To: Claudia J?rgen <Claudia.Juergen at ub.uni-dortmund.de>
Cc: dspace-general at mit.edu
Message-ID:
        <1892d16f0907011201s4b62d6e4sf571f6f90e5e562d at mail.gmail.com>
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Hi, Claudia. Thank you for answering.
I got that. But there's some gap I can't understand. I'll give you an
example to (try to) explain why it doesn't make sense:

Below, two fields from one of my forms:

<field>
          <dc-schema>dc</dc-schema>
          <dc-element>subject</dc-element>
          <dc-qualifier/>
          <repeatable>true</repeatable>
          <label>Subject</label>
          <input-type>onebox</input-type>
          <hint/>
          <required/>
 </field>

<field>
          <dc-schema>dc</dc-schema>
          <dc-element>subject</dc-element>
<dc-qualifier/>
          <repeatable>false</repeatable>
          <label>Keywords</label>
          <input-type>onebox</input-type>
          <hint/>
          <required/>
</field>

The first is the subject of the item itself. The other one is for the
keywords' field. I can't merge them into a single repeatable field, once
they have different meanings.

So, how am I supposed to solve this, considering I can't have duplicated
elements? Dublin Core and Dspace wouldn't limit the number of metadata, of
fields, would them?

Well, maybe I could insert a qualifier for each element. But the official
DC's qualifiers list* doesn't include as many qualifiers as I need. Can I
write (create) any qualifier I want? Or is there any other solution I'm not
figuring out?


Yuri Gomes Cardenas

* http://dublincore.org/documents/usageguide/qualifiers.shtml


2009/7/1 Claudia J?rgen <Claudia.Juergen at ub.uni-dortmund.de>

> Hi Yuri,
>
> this is true with regards to the metadata registry. There an element got to
> be unique within a schema. As for the input forms, you can mark a field as
> repeatable to have the possibility to enter multiple values for a field,
> e.g.:
>       <field>
>         <dc-schema>dc</dc-schema>
>         <dc-element>contributor</dc-element>
>         <dc-qualifier>author</dc-qualifier>
>         <repeatable>true</repeatable>
>         <label>Authors</label>
>         <input-type>name</input-type>
>         <hint>Enter the names of the authors of this item below.</hint>
>         <required></required>
>       </field>
>
> Setting
> <repeatable>true</repeatable>
> allows for multiple authors to be entered.
>
> Hope this helps
>
> Claudia J?rgen
>
>
> Yuri schrieb:
>
>> Hi, everyone.
>>
>> I've discovered that DSpace does not accept duplicated dc-elements for the
>> same dc-schema. And discovered also that this verification is done in
>> DCInputsReader, method checkForDups( ). But I don't understand the reason
>> for it, once there are no problems about repeating elements in Dublin
>> Core.
>>
>> And It doesn't seem a good idea to skip this verification in DSpace's code
>> as well.
>>
>> Am I wrong, duplicated element are an important thing to check? And if so,
>> does anyone know why?
>>
>> Thanks in advance.
>>
>> *Yuri Gomes Cardenas*
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