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FLEXIF
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XMP definition in XMP

Feb 9, 2012 3:24 AM

Tags: #xmp

Hello everyone,

 

the development for XMP could be much easier if we had XMP definition in XMP

For example one could create GUI for XMP editing even without reading XMP ducumentation.

 

All we need is to parse XMP tree and translate metadata to appropriate programming language.

 

Moreover such authomated processing would minimize bugs in programms.

 

My english is not the best, but I hope everybody understand my idea.

 

 

For example definition of arrays could look like:

 

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">

    <rdf:Description rdf:about=""

        xmlns:xmpDef="http://ns.adobe.com/xmpDef/1.0/">

      <xmpDef:Array>

        <rdf:Bag>

          <rdf:li>Bag</rdf:li>

          <rdf:li>Seq</rdf:li>

          <rdf:li>Alt</rdf:li>

        </rdf:Bag>

      </xmpDef:Array>

    </rdf:Description>

  </rdf:RDF>

 
Replies
  • Currently Being Moderated
    Feb 9, 2012 9:18 AM   in reply to FLEXIF

    Related subject: PDF/A extension schema is essentially an XMP schema 

    definition language written in XMP!

     

    http://www.pdfa.org/publication/technical-note-tn-009-xmp-extension-sc hemas-in-pdfa-1/

     

    It is a publicly available specification as well.

     
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  • Currently Being Moderated
    Feb 9, 2012 11:57 AM   in reply to FLEXIF

    It is the only to a publicly available schema definition language for 

    XMP implemented in any language.

     

    Like many XMP implementations, it does not include support for XMP 

    Qualifiers.

     

    Here is a screen shot of a partial example of Dublin Core defined in 

    PDF/a Extension XMP.

     
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  • Currently Being Moderated
    Feb 9, 2012 1:03 PM   in reply to FLEXIF

    Screen shot was not posted. Here is a portion of the XMP packet 

    generated.

     

           <rdf:Description rdf:about=""

                 xmlns:pdfaExtension="http://www.aiim.org/pdfa/ns/

    extension/"

                 xmlns:pdfaSchema="http://www.aiim.org/pdfa/ns/schema#"

                 xmlns:pdfaProperty="http://www.aiim.org/pdfa/ns/property#">

              <pdfaExtension:schemas>

                 <rdf:Bag>

                    <rdf:li rdf:parseType="Resource">

                       <pdfaSchema:prefix>dc</pdfaSchema:prefix>

                       <pdfaSchema:namespaceURI>http://purl.org/dc/elements/1.1/

    </pdfaSchema:namespaceURI>

                       <pdfaSchema:schema>Dublin Core Schema</

    pdfaSchema:schema>

                       <pdfaSchema:property>

                          <rdf:Seq>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>contributor</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>Contributors to 

    the resource (other than the authors).</pdfaProperty:description>

                                <pdfaProperty:valueType>bag ProperName</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>coverage</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>The extent or 

    scope of the resource.</pdfaProperty:description>

                                <pdfaProperty:valueType>Text</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>creator</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>The authors of 

    the resource (listed in order of precedence, if significant).</

    pdfaProperty:description>

                                <pdfaProperty:valueType>seq ProperName</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>date</pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>Date(s) that 

    something interesting happened to the resource.</

    pdfaProperty:description>

                                <pdfaProperty:valueType>seq Date</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>description</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>A textual 

    description of the content of the resource. Multiple values may be 

    present for different languages.</pdfaProperty:description>

                                <pdfaProperty:valueType>Lang Alt</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>format</

    pdfaProperty:name>

                                <pdfaProperty:category>internal</

    pdfaProperty:category>

                                <pdfaProperty:description>The file format 

    used when saving the resource. Tools and applications should set this 

    property to the save format of the data. It may include appropriate 

    qualifiers. </pdfaProperty:description>

                                <pdfaProperty:valueType>MIMEType</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>identifier</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>Unique 

    identifier of the resource.</pdfaProperty:description>

                                <pdfaProperty:valueType>Text</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>language</

    pdfaProperty:name>

                                <pdfaProperty:category>internal</

    pdfaProperty:category>

                                <pdfaProperty:description>An unordered 

    array specifying the languages used in the resource.</

    pdfaProperty:description>

                                <pdfaProperty:valueType>bag Locale</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>publisher</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>Publisher(s).</

    pdfaProperty:description>

                                <pdfaProperty:valueType>bag ProperName</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>relation</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>Relationships to 

    other documents.</pdfaProperty:description>

                                <pdfaProperty:valueType>bag Text</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>rights</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>Informal rights 

    statement, selected by language.</pdfaProperty:description>

                                <pdfaProperty:valueType>Lang Alt</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>source</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>Unique 

    identifier of the work from which this resource was derived.</

    pdfaProperty:description>

                                <pdfaProperty:valueType>Text</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>subject</

    pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>An unordered 

    array of descriptive phrases or keywords that specify the topic of the 

    content of the resource.</pdfaProperty:description>

                                <pdfaProperty:valueType>bag Text</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>title</pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>The title of the 

    document, or the name given to the resource. Typically, it will be a 

    name by which the resource is formally known.</pdfaProperty:description>

                                <pdfaProperty:valueType>Lang Alt</

    pdfaProperty:valueType>

                             </rdf:li>

                             <rdf:li rdf:parseType="Resource">

                                <pdfaProperty:name>type</pdfaProperty:name>

                                <pdfaProperty:category>external</

    pdfaProperty:category>

                                <pdfaProperty:description>A document type; 

    for example, novel, poem, or working paper.</pdfaProperty:description>

                                <pdfaProperty:valueType>bag Text</

    pdfaProperty:valueType>

                             </rdf:li>

                          </rdf:Seq>

                       </pdfaSchema:property>

                    </rdf:li>

                 </rdf:Bag>

              </pdfaExtension:schemas>

           </rdf:Description

     
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