REP-1050 entferne altRepGroup Attribute für die Gruppen mit 1 Element

src/main/resources/xsl/migration/mycoreobject-remove-single-altRepGroup.xsl

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
+    xmlns:mcrxml="xalan://org.mycore.common.xml.MCRXMLFunctions"
+    xmlns:mods="http://www.loc.gov/mods/v3" 
+    xmlns:xlink="http://www.w3.org/1999/xlink">
+
+    <xsl:include href="copynodes.xsl" />
+
+    <xsl:template match="*[string-length(@altRepGroup) &gt; 0]">
+        <xsl:variable name="altRepGroup" select="@altRepGroup"/>
+        <xsl:choose>
+            <xsl:when test="count(../*[@altRepGroup = $altRepGroup]) = 1">
+                <xsl:copy >
+                    <xsl:apply-templates select="*|@*[local-name() != 'altRepGroup']"/>
+                </xsl:copy>
+            </xsl:when>
+            <xsl:otherwise>
+                <xsl:copy >
+                    <xsl:apply-templates select="*|@*"/>
+                </xsl:copy>
+            </xsl:otherwise>
+        </xsl:choose>
+    </xsl:template>
+
+</xsl:stylesheet>