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some improvement suggestions for dcat export (#4898)
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- introduces some dcat2 aspects and
- enables some of the gmx:anchor usages as suggested by inspire tgv2
- set uri-encoding for id's
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paul van genuchten authored Sep 4, 2020
1 parent fe84337 commit c2aacac
Showing 1 changed file with 74 additions and 85 deletions.
159 changes: 74 additions & 85 deletions schemas/iso19139/src/main/plugin/iso19139/layout/tpl-rdf.xsl
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,8 @@
xmlns:gco="http://www.isotc211.org/2005/gco"
xmlns:gmd="http://www.isotc211.org/2005/gmd"
xmlns:srv="http://www.isotc211.org/2005/srv"
xmlns:gmx="http://www.isotc211.org/2005/gmx"
xmlns:xlink="http://www.w3.org/1999/xlink"
xmlns:gml="http://www.opengis.net/gml/3.2"
xmlns:gml320="http://www.opengis.net/gml"
xmlns:ogc="http://www.opengis.net/rdf#"
Expand All @@ -50,14 +52,15 @@
See http://www.w3.org/TR/2004/REC-rdf-concepts-20040210/#dfn-URI-reference
-->


<!--
Create reference block to metadata record and dataset to be added in dcat:Catalog usually.
-->
<!-- FIME : $url comes from a global variable. -->
<xsl:template match="gmd:MD_Metadata|*[@gco:isoType='gmd:MD_Metadata']" mode="record-reference">
<!-- TODO : a metadata record may contains aggregate. In that case create one dataset per aggregate member. -->
<dcat:dataset rdf:resource="{$resourcePrefix}/datasets/{iso19139:getResourceCode(.)}"/>
<dcat:record rdf:resource="{$resourcePrefix}/records/{gmd:fileIdentifier/gco:CharacterString}"/>
<dcat:dataset rdf:resource="{iso19139:ResourceUri(iso19139:getResourceCode(.))}"/>
<dcat:record rdf:resource="{iso19139:RecordUri(gmd:fileIdentifier/gco:CharacterString)}"/>
</xsl:template>


Expand All @@ -66,16 +69,16 @@
-->
<xsl:template match="gmd:MD_Metadata|*[@gco:isoType='gmd:MD_Metadata']" mode="to-dcat">


<!-- Catalogue records
"A record in a data catalog, describing a single dataset."
xpath: //gmd:MD_Metadata|//*[@gco:isoType='gmd:MD_Metadata']
-->
<dcat:CatalogRecord rdf:about="{$resourcePrefix}/records/{gmd:fileIdentifier/gco:CharacterString}">
<dcat:CatalogRecord rdf:about="{iso19139:RecordUri(gmd:fileIdentifier/gco:CharacterString)}">
<!-- Link to a dcat:Dataset or a rdf:Description for services and feature catalogue. -->
<foaf:primaryTopic rdf:resource="{$resourcePrefix}/resources/{iso19139:getResourceCode(.)}"/>

<foaf:primaryTopic rdf:resource="{iso19139:ResourceUri(iso19139:getResourceCode(.))}"/>
<dct:conformsTo rdf:resource="https://www.iso.org/standard/32557.html"/>
<!-- Metadata change date.
"The date is encoded as a literal in "YYYY-MM-DD" form (ISO 8601 Date and Time Formats)." -->
<xsl:variable name="date" select="substring-before(gmd:dateStamp/gco:DateTime, 'T')"/>
Expand All @@ -85,56 +88,26 @@
<dct:modified>
<xsl:value-of select="$date"/>
</dct:modified>
<!-- xpath: gmd:dateStamp/gco:DateTime -->

<xsl:call-template name="add-reference">
<xsl:with-param name="uuid" select="gmd:fileIdentifier/gco:CharacterString"/>
</xsl:call-template>
</dcat:CatalogRecord>

<xsl:apply-templates select="gmd:identificationInfo/*" mode="to-dcat"/>

</xsl:template>


<!-- Add references for HTML and XML metadata record link -->
<xsl:template name="add-reference">
<xsl:param name="uuid"/>

<dct:references>
<rdf:Description rdf:about="{$resourcePrefix}/records/{$uuid}/formatters/xml">
<dct:format>
<dct:IMT>
<rdf:value>application/xml</rdf:value>
<rdfs:label>XML</rdfs:label>
</dct:IMT>
</dct:format>
</rdf:Description>
</dct:references>

<dct:references>
<rdf:Description rdf:about="{$resourcePrefix}/records/{$uuid}">
<dct:format>
<dct:IMT>
<rdf:value>text/html</rdf:value>
<rdfs:label>HTML</rdfs:label>
</dct:IMT>
</dct:format>
</rdf:Description>
</dct:references>
</xsl:template>

<!-- Create all references for ISO19139 record (if rdf.metadata.get) or records (if rdf.search) -->
<xsl:template match="gmd:MD_Metadata|*[@gco:isoType='gmd:MD_Metadata']" mode="references">

<xsl:variable name="uuid" select="gmd:fileIdentifier/gco:CharacterString"/>

<!-- Keywords -->
<xsl:for-each-group
select="//gmd:MD_Keywords[(gmd:thesaurusName)]/gmd:keyword/gco:CharacterString" group-by=".">
<!-- FIXME maybe only do that, if keyword URI is available (when xlink is used ?) -->
<skos:Concept
rdf:about="{$resourcePrefix}/registries/vocabularies/{iso19139:getThesaurusCode(../../gmd:thesaurusName)}/concepts/{encode-for-uri(.)}">
rdf:about="{$resourcePrefix}/registries/vocabularies/{encode-for-uri(iso19139:getThesaurusCode(../../gmd:thesaurusName))}/concepts/{encode-for-uri(.)}">
<skos:inScheme
rdf:resource="{$resourcePrefix}/registries/vocabularies/{iso19139:getThesaurusCode(../../gmd:thesaurusName)}"/>
rdf:resource="{$resourcePrefix}/registries/vocabularies/{encode-for-uri(iso19139:getThesaurusCode(../../gmd:thesaurusName))}"/>
<skos:prefLabel>
<xsl:value-of select="."/>
</skos:prefLabel>
Expand All @@ -155,7 +128,7 @@
<xsl:for-each-group
select="//gmd:distributionInfo/*/gmd:transferOptions/*/gmd:onLine/gmd:CI_OnlineResource"
group-by="gmd:linkage/gmd:URL">
<dcat:Distribution rdf:about="{gmd:linkage/gmd:URL}">
<dcat:Distribution rdf:about="{iso19139:RecordUri($uuid)}#{encode-for-uri(gmd:protocol/*/text())}-{encode-for-uri(gmd:name/*/text())}">
<!--
"points to the location of a distribution. This can be a direct download link, a link
to an HTML page containing a link to the actual data, Feed, Web Service etc.
Expand All @@ -168,40 +141,27 @@

<xsl:if test="gmd:name/gco:CharacterString!=''">
<dct:title>
<xsl:value-of select=" gmd:name/gco:CharacterString"/>
<xsl:value-of select="gmd:name/gco:CharacterString"/>
</dct:title>
</xsl:if>
<!-- xpath: gmd:name/gco:CharacterString -->

<!-- "The size of a distribution.":N/A
<dcat:size></dcat:size>
-->

<xsl:if test="gmd:protocol/gco:CharacterString!=''">

<xsl:if test="(gmd:protocol/gmx:Anchor/@xlink:href)[1]!=''">
<dcat:mediaType>
<xsl:attribute name="rdf:resource" select="(gmd:protocol/gmx:Anchor/@xlink:href)[1]"/>
<xsl:value-of select="(gmd:protocol/gmx:Anchor)[1]"/>
</dcat:mediaType>
</xsl:if>
<xsl:if test="(gmd:protocol/gco:CharacterString)[1]!=''">
<dct:format>
<!--
"the file format of the distribution."
"MIME type is used for values. A list of MIME types URLs can be found at IANA.
However ESRI Shape files have no specific MIME type (A Shape distribution is actually
a collection of files), currently this is still an open question?"
In our case, Shapefile will be zipped !
Mapping between protocol list and mime/type when needed
-->
<dct:IMT>
<rdf:value>
<xsl:value-of select="gmd:protocol/gco:CharacterString"/>
</rdf:value>
<rdfs:label>
<xsl:value-of select="gmd:protocol/gco:CharacterString"/>
</rdfs:label>
</dct:IMT>
<xsl:value-of select="(gmd:protocol/gco:CharacterString)[1]"/>
</dct:format>
</xsl:if>
<!-- xpath: gmd:protocol/gco:CharacterString -->

</xsl:if>

</dcat:Distribution>
</xsl:for-each-group>

Expand All @@ -228,7 +188,6 @@
</foaf:Organization>
</xsl:for-each-group>


<xsl:for-each-group select="//gmd:CI_ResponsibleParty"
group-by="gmd:contactInfo/gmd:CI_Contact/gmd:address/gmd:CI_Address/gmd:electronicMailAddress/gco:CharacterString">
<!-- Organization member
Expand Down Expand Up @@ -269,7 +228,7 @@
<xsl:template
match="srv:SV_ServiceIdentification|*[contains(@gco:isoType, 'SV_ServiceIdentification')]"
mode="to-dcat">
<rdf:Description rdf:about="{$resourcePrefix}/resource/{iso19139:getResourceCode(../../.)}">
<rdf:Description rdf:about="{$resourcePrefix}/{iso19139:getResourceCode(../../.)}">
<xsl:call-template name="to-dcat"/>
</rdf:Description>
</xsl:template>
Expand All @@ -291,6 +250,9 @@

<!-- Build a dcat record for a dataset or service -->
<xsl:template name="to-dcat">

<xsl:variable name="uuid" select="../../gmd:fileIdentifier/gco:CharacterString"/>

<!-- "A unique identifier of the dataset." -->
<dct:identifier>
<xsl:value-of select="iso19139:getResourceCode(../../.)"/>
Expand Down Expand Up @@ -319,34 +281,45 @@
<xsl:value-of select="."/>
</dcat:keyword>
</xsl:for-each>
<xsl:for-each
select="gmd:descriptiveKeywords/gmd:MD_Keywords[not(gmd:thesaurusName)]/gmd:keyword/gmx:Anchor">
<dcat:keyword rdf:resource="{@xlink:href}">
<xsl:value-of select="."/>
</dcat:keyword>
</xsl:for-each>
<!-- xpath: gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[not(gmd:thesaurusName)]/gmd:keyword/gco:CharacterString -->


<!-- "The main category of the dataset. A dataset can have multiple themes."
Create dcat:theme if gmx:Anchor or GEMET concepts or INSPIRE themes
-->
<!-- xpath: gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gco:CharaceterString -->
<xsl:for-each
select="gmd:descriptiveKeywords/gmd:MD_Keywords[(gmd:thesaurusName)]/gmd:keyword/gco:CharacterString">
<!-- FIXME maybe only do that, if keyword URI is available (when xlink is used ?) -->
<dcat:theme
rdf:resource="{$resourcePrefix}/registries/vocabularies/{iso19139:getThesaurusCode(../../gmd:thesaurusName)}/concepts/{.}"/>
rdf:resource="{$resourcePrefix}/registries/vocabularies/{encode-for-uri(iso19139:getThesaurusCode(../../gmd:thesaurusName))}/concepts/{encode-for-uri(.)}"/>
</xsl:for-each>
<!-- xpath: gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gmx:Anchor -->
<xsl:for-each
select="gmd:descriptiveKeywords/gmd:MD_Keywords[(gmd:thesaurusName)]/gmd:keyword/gmx:Anchor">
<dcat:theme rdf:resource="{@xlink:href}">
<xsl:value-of select="./text()"/>
</dcat:theme>
</xsl:for-each>
<!-- xpath: gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gmx:Anchor -->
<!-- xpath: gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gco:CharaceterString -->
<!-- xpath: gmd:identificationInfo/*/gmd:topicCategory/gmd:MD_TopicCategoryCode -->
<xsl:for-each select="gmd:topicCategory/gmd:MD_TopicCategoryCode[.!='']">
<!-- FIXME Is there any public URI pointing to topicCategory enumeration ? -->
<dcat:theme rdf:resource="{$resourcePrefix}/registries/vocabularies/isoTopicCategory/concepts/{.}"/>
<dcat:theme rdf:resource="https://inspire.ec.europa.eu/metadata-codelist/TopicCategory/{translate(.,' ','')}"/>
</xsl:for-each>

<!-- Thumbnail -->
<xsl:for-each
select="gmd:graphicOverview/gmd:MD_BrowseGraphic/gmd:fileName/gco:CharacterString">
select="gmd:graphicOverview/gmd:MD_BrowseGraphic/gmd:fileName/gco:CharacterString[normalize-space(.)!='']">
<foaf:thumbnail rdf:resource="{.}"/>
</xsl:for-each>
<!-- xpath: gmd:identificationInfo/*/gmd:graphicOverview/gmd:MD_BrowseGraphic/gmd:fileName/gco:CharacterString -->


<!-- "Spatial coverage of the dataset." -->
<xsl:for-each select="gmd:extent/*/gmd:geographicElement/gmd:EX_GeographicBoundingBox">
<xsl:variable name="coords" select="
Expand Down Expand Up @@ -435,7 +408,7 @@


<!-- "The license under which the dataset is published and can be reused." -->
<xsl:for-each select="gmd:resourceConstraints/gmd:MD_LegalConstraints/*/gmd:MD_RestrictionCode">
<xsl:for-each select="gmd:resourceConstraints/gmd:MD_LegalConstraints/*/gmd:MD_RestrictionCode[@codeListValue!='otherRestrictions']">
<dct:license>
<xsl:value-of select="@codeListValue"/>
</dct:license>
Expand All @@ -446,53 +419,59 @@
<xsl:value-of select="."/>
</dct:license>
</xsl:for-each>
<xsl:for-each
select="gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:otherConstraints/gmx:Anchor">
<dct:license rdf:resource="{@xlink:href}">
<xsl:value-of select="."/>
</dct:license>
</xsl:for-each>
<!-- xpath: gmd:identificationInfo/*/gmd:resourceConstraints/??? -->


<xsl:for-each select="../../gmd:distributionInfo/*/gmd:transferOptions/*/gmd:onLine">
<dcat:distribution rdf:resource="{gmd:CI_OnlineResource/gmd:linkage/gmd:URL}"/>
<dcat:distribution rdf:resource="{iso19139:RecordUri($uuid)}#{encode-for-uri(gmd:CI_OnlineResource/gmd:protocol/*/text())}-{encode-for-uri(gmd:CI_OnlineResource/gmd:name/*/text())}"/>
</xsl:for-each>

<!-- xpath: gmd:distributionInfo/*/gmd:transferOptions/*/gmd:onLine/gmd:CI_OnlineResource -->


<!-- ISO19110 relation
"This usually consisits of a table providing explanation of columns meaning, values interpretation and acronyms/codes used in the data."
-->
<xsl:for-each
select="../../gmd:contentInfo/gmd:MD_FeatureCatalogueDescription/gmd:featureCatalogueCitation/@uuidref ">
<dcat:dataDictionary rdf:resource="{$resourcePrefix}/records/{.}"/>
select="../../gmd:contentInfo/gmd:MD_FeatureCatalogueDescription/gmd:featureCatalogueCitation/@uuidref">
<dcat:dataDictionary rdf:resource="{iso19139:RecordUri(.)}"/>
</xsl:for-each>
<!-- xpath: gmd:contentInfo/gmd:MD_FeatureCatalogueDescription/gmd:featureCatalogueCitation/@uuidref -->

<!-- Dataset relation
-->
<xsl:for-each select="srv:operatesOn/@uuidref ">
<dct:relation rdf:resource="{$resourcePrefix}/records/{.}"/>
<dct:relation rdf:resource="{iso19139:RecordUri(.)}"/>
</xsl:for-each>


<xsl:for-each select="gmd:aggregationInfo/gmd:MD_AggregateInformation">
<dct:relation
rdf:resource="{$resourcePrefix}/records/{gmd:aggregateDataSetIdentifier/gmd:MD_Identifier/gmd:code/gco:CharacterString}"/>
rdf:resource="{iso19139:RecordUri(gmd:aggregateDataSetIdentifier/gmd:MD_Identifier/gmd:code/gco:CharacterString)}"/>
</xsl:for-each>

<!-- Source relation -->
<xsl:for-each select="/root/gui/relation/sources/response/metadata">
<dct:relation rdf:resource="{$resourcePrefix}/records/{geonet:info/uuid}"/>
<dct:relation rdf:resource="{iso19139:RecordUri(geonet:info/uuid)}"/>
</xsl:for-each>


<!-- Parent/child relation -->
<xsl:for-each select="../../gmd:parentIdentifier/gco:CharacterString[.!='']">
<dct:relation rdf:resource="{$resourcePrefix}/records/{.}"/>
<dct:relation rdf:resource="{iso19139:RecordUri(.)}"/>
</xsl:for-each>
<xsl:for-each select="/root/gui/relation/children/response/metadata">
<dct:relation rdf:resource="{$resourcePrefix}/records/{geonet:info/uuid}"/>
<dct:relation rdf:resource="{iso19139:RecordUri(geonet:info/uuid)}"/>
</xsl:for-each>

<!-- Service relation -->
<xsl:for-each select="/root/gui/relations/services/response/metadata">
<dct:relation rdf:resource="{$resourcePrefix}/records/{geonet:info/uuid}"/>
<dct:relation rdf:resource="{iso19139:RecordUri(geonet:info/uuid)}"/>
</xsl:for-each>


Expand Down Expand Up @@ -557,4 +536,14 @@
else generate-id($responsibleParty)"/>
</xsl:function>


<xsl:function name="iso19139:RecordUri">
<xsl:param name="id" as="xs:string?"/>
<xsl:value-of select="concat($url,'/records/',encode-for-uri($id))"/>
</xsl:function>
<xsl:function name="iso19139:ResourceUri">
<xsl:param name="id" as="xs:string?"/>
<xsl:value-of select="concat($resourcePrefix,'/',encode-for-uri($id))"/>
</xsl:function>

</xsl:stylesheet>

1 comment on commit c2aacac

@pvgenuchten
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@pvgenuchten pvgenuchten commented on c2aacac Sep 4, 2020 •
edited
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thanx for merging jose!

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