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research_data_versions.xslt
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research_data_versions.xslt
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<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0"
xmlns:foxml="info:fedora/fedora-system:def/foxml#"
xmlns:xalan="http://xml.apache.org/xalan"
xmlns:sparql="http://www.w3.org/2001/sw/DataAccess/rf1/result"
xmlns:encoder="xalan://java.net.URLEncoder"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:java="http://xml.apache.org/xalan/java"
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" exclude-result-prefixes="rdf">
<xsl:import href="/usr/local/fedora/tomcat/webapps/fedoragsearch/WEB-INF/classes/fgsconfigFinal/index/FgsIndex/islandora_transforms/RELS-EXT_to_solr.xslt"/>
<xsl:variable name="research_data_version_flag_name">mmv_is_latest_b</xsl:variable>
<xsl:variable name="research_data_membership_field">RELS_EXT_isMemberOf_uri_ms</xsl:variable>
<!--
Check if the given document claims to be the latest, and reindex the current.
@param $current
A generated Solr "doc" element with child fields, as per Solr's UpdateXML
(as we generated in the foxmlToSolr.xslt.
@return
If there are other documents in Solr at time of indexing claiming to be
the latest, we output "doc" elements reindexing them; otherwise, we do
nothing.
-->
<xsl:template name="reindex_previous_newest_research_data_set_version_if_necessary">
<xsl:param name="current"/>
<xsl:variable name="doc" select="$current/doc"/>
<xsl:if test="normalize-space($doc/field[@name=$research_data_version_flag_name]) = 'true'">
<!--
We are the latest... we need to check for any other document claiming
to be the latest and reindex it.
-->
<xsl:variable name="container_query">
<xsl:variable name="container_candidates" select="$doc/field[@name='RELS_EXT_isMemberOf_uri_s' or @name=$research_data_membership_field]"/>
<xsl:value-of select="$research_data_membership_field"/>
<xsl:text>:(</xsl:text>
<xsl:for-each select="$container_candidates">
<xsl:text>"</xsl:text>
<xsl:value-of select="normalize-space(.)"/>
<xsl:text>"</xsl:text>
<xsl:if test="position() != last()">
<xsl:text> OR </xsl:text>
</xsl:if>
</xsl:for-each>
<xsl:text>)</xsl:text>
</xsl:variable>
<xsl:variable name="solr_query_url" select="string(normalize-space(concat(
$PROT,
'://',
$HOST,
':',
$PORT,
'/solr/select?q=',
encoder:encode(concat(
$container_query,
' AND ',
$research_data_version_flag_name,
':"true" AND -PID:"',
normalize-space($doc/field[@name='PID']),
'"'
)),
'&fl=PID'
)))"/>
<xsl:variable name="query_result" select="document(string($solr_query_url))"/>
<xsl:for-each select="$query_result/response/result[@name='response']/doc">
<xsl:call-template name="mmv_update_former_latest">
<xsl:with-param name="pid" select="str[@name='PID']"/>
<xsl:with-param name="version" select="long[@name='_version_']"/>
</xsl:call-template>
</xsl:for-each>
</xsl:if>
</xsl:template>
<!--
Helper; generate a "doc" to update a record in Solr presently claiming to be the latest.
@param string $pid
The PID of the object to update.
@param long $version
The version of the document in Solr, as per the _version_ field, so as to
avoid stomping on things potentially indexed in other threads.
@return
A "doc" UpdateXMLMessage element.
@see https://wiki.apache.org/solr/Optimistic_Concurrency
@see https://wiki.apache.org/solr/Per%20Steffensen/Update%20semantics
-->
<xsl:template name="mmv_update_former_latest">
<xsl:param name="pid"/>
<xsl:param name="version"/>
<!--
XXX: Updating existing documents is _not_ viable in Solr 4, given
https://issues.apache.org/jira/browse/SOLR-3743 ...
It appears "copyField" directives are rerun on update, so stored
copyField targets (such as our *_ss field) will end up with multiple
values... despite being defined as single-valued.
-->
<xsl:variable name="xml_url" select="concat($PROT, '://', encoder:encode($FEDORAUSER), ':', encoder:encode($FEDORAPASS), '@', $HOST, ':', $PORT, '/fedora/objects/', $pid, '/objectXML')"/>
<xsl:variable name="object" select="document($xml_url)"/>
<xsl:if test="$object">
<xsl:apply-templates select="$object/foxml:digitalObject" mode="indexFedoraObject">
<xsl:with-param name="PID" select="$pid"/>
<xsl:with-param name="version" select="$version"/>
</xsl:apply-templates>
</xsl:if>
</xsl:template>
<!--
Conditionally index flag for mmv objects.
This should conditionally override the core implementation for our specific
relationship by virtue of being loaded and in the same mode.
@see https://github.com/discoverygarden/islandora_transforms/blob/3f4f40b1b2277c9a435c0f1387975f6be0d85e57/RELS-EXT_to_solr.xslt#L26-L37
-->
<xsl:template xmlns:fedora-model="info:fedora/fedora-system:def/model#"
match="fedora-model:hasModel[@rdf:resource='info:fedora/islandora:research_data_major_minor_version_model']"
mode="rels_ext_element">
<xsl:param name="prefix"/>
<xsl:param name="suffix"/>
<!--
XXX: Ideally, we could do an "apply-imports" or something of the like
here; however, XSLT 1.0 does not and cannot pass parameters inside
of apply-imports... instead, inline the content of what we would expect
to run...
@see https://github.com/discoverygarden/islandora_transforms/blob/3f4f40b1b2277c9a435c0f1387975f6be0d85e57/RELS-EXT_to_solr.xslt#L31-L36
-->
<xsl:call-template name="rels_ext_fields">
<xsl:with-param name="prefix" select="$prefix"/>
<xsl:with-param name="suffix" select="$suffix"/>
<xsl:with-param name="type">uri</xsl:with-param>
<xsl:with-param name="value" select="@rdf:resource"/>
</xsl:call-template>
<!-- XXX: ... that's it. -->
<xsl:if test="$maintain_dataset_latest_version_flag">
<field>
<xsl:attribute name="name">
<xsl:value-of select="$research_data_version_flag_name"/>
</xsl:attribute>
<xsl:call-template name="research_data_version_is_latest">
<xsl:with-param name="full_pid" select="../@rdf:about"/>
</xsl:call-template>
</field>
</xsl:if>
</xsl:template>
<!--
Determine if the given object is the latest version in its conatainer(s).
@param string $full_pid
The full PID of the object to test, with the "info:fedora/" prefix.
@return string
The string "true" if there were no newer versions under the containing
container/data set; otherwise, "false".
NOTE: Due to the use of "FILTER NOT EXISTS", we require an RI which
supports Sparql 1.1.
-->
<xsl:template name="research_data_version_is_latest">
<xsl:param name="full_pid"/>
<xsl:variable name="result">
<xsl:variable name="base_query">
<![CDATA[
ASK {
VALUES ?base {<!!FULL_PID!!>}
?base <fedora-rels-ext:isMemberOf> ?container ;
<fedora-model:hasModel> <info:fedora/islandora:research_data_major_minor_version_model> ;
<http://islandora.ca/ontology/relsext#isMajorVersionNumber> ?base_major ;
<http://islandora.ca/ontology/relsext#isMinorVersionNumber> ?base_minor ;
<http://islandora.ca/ontology/relsext#isPatchVersionNumber> ?base_patch .
?container <fedora-model:hasModel> <info:fedora/islandora:research_data_set_model> .
FILTER NOT EXISTS {
?version <fedora-rels-ext:isMemberOf> ?container ;
<fedora-model:hasModel> <info:fedora/islandora:research_data_major_minor_version_model> ;
<http://islandora.ca/ontology/relsext#isMajorVersionNumber> ?major ;
<http://islandora.ca/ontology/relsext#isMinorVersionNumber> ?minor ;
<http://islandora.ca/ontology/relsext#isPatchVersionNumber> ?patch .
FILTER(?major > ?base_major || (?major = ?base_major && ?minor > ?base_minor) || (?major = ?base_major && ?minor = ?base_minor && ?patch > ?base_patch))
}
}
]]>
</xsl:variable>
<xsl:call-template name="perform_traversal_query">
<xsl:with-param name="query" select="java:replaceAll(string($base_query), '!!FULL_PID!!', $full_pid)"/>
<xsl:with-param name="lang">sparql</xsl:with-param>
</xsl:call-template>
</xsl:variable>
<xsl:value-of
select="normalize-space(xalan:nodeset($result)/sparql:sparql/sparql:results/sparql:result/sparql:k0)"/>
</xsl:template>
</xsl:stylesheet>