set spec filter additionally added in xslt

src/test/resources/xslt/wzb-oai_dc-2-xmlbundle.xslt

@@ -32,14 +32,24 @@
     <xsl:template match="*" />
     
     <xsl:template match="/">
-        <xsl:element name="bundle">
-            <xsl:element name="metadata">
-                <!-- Only datasets of the 'Alle Publikationen von Forscherinnen und Forschern des WZB' set -->
-                <xsl:if test="/oai:OAI-PMH/oai:GetRecord/oai:record/oai:header/oai:setSpec/text() = 'hdl_10419_48639'">
-                    <xsl:apply-templates select="oai:OAI-PMH/oai:GetRecord/oai:record/oai:metadata/oai_dc:dc" />
-                </xsl:if>
-            </xsl:element>
-        </xsl:element>
+        <xsl:variable name="sets">
+            <xsl:for-each select="//oai:setSpec" >
+                <xsl:value-of select="text()"/>
+                <xsl:text> ; </xsl:text>
+            </xsl:for-each>
+        </xsl:variable>
+        <xsl:choose>
+            <xsl:when test="not(contains($sets, 'hdl_10419_48639 ;'))" >
+                <xsl:value-of select="error(QName('','filteraway'), 'is not in set hdl_10419_48639')" />
+            </xsl:when>
+            <xsl:otherwise>
+                <xsl:element name="bundle">
+                    <xsl:element name="metadata">
+                        <xsl:apply-templates select="oai:OAI-PMH/oai:GetRecord/oai:record/oai:metadata/oai_dc:dc" />
+                    </xsl:element>
+                </xsl:element>
+            </xsl:otherwise>
+        </xsl:choose>
     </xsl:template>
     
     <xsl:template match="oai:OAI-PMH/oai:GetRecord/oai:record/oai:metadata/oai_dc:dc">