- using http://purl.org/dc/terms/references to refer from an

auto-annotated document to a 'pseudo-linked' document which has an url
created with an object-prefix as defined in the vocabulary file

source/net/yacy/cora/lod/JenaTripleStore.java

@@ -12,6 +12,7 @@ import java.util.Map.Entry;
 import java.util.concurrent.ConcurrentHashMap;
 
 import net.yacy.cora.document.UTF8;
+import net.yacy.cora.lod.vocabulary.DCTerms;
 import net.yacy.cora.lod.vocabulary.Geo;
 import net.yacy.cora.lod.vocabulary.HttpHeader;
 import net.yacy.cora.lod.vocabulary.Tagging;
@@ -40,6 +41,7 @@ public class JenaTripleStore {
         model.setNsPrefix(HttpHeader.PREFIX, HttpHeader.NAMESPACE);
         model.setNsPrefix(Geo.PREFIX, Geo.NAMESPACE);
         model.setNsPrefix("pnd", "http://dbpedia.org/ontology/individualisedPnd");
+        model.setNsPrefix(DCTerms.PREFIX, DCTerms.NAMESPACE);
 	}
 
 	public static ConcurrentHashMap<String, Model> privatestorage = null;

source/net/yacy/cora/lod/Vocabulary.java

@@ -41,13 +41,13 @@ public interface Vocabulary {
      * get the RDF identifier as an URL stub
      * @return
      */
-    public String getURLStub();
+    public String getNamespace();
 
     /**
      * get the prefix for the predicates of this vocabulary
      * @return
      */
-    public String getShortName();
+    public String getNamespacePrefix();
 
     /**
      * get the predicate name which already contains the prefix url stub

source/net/yacy/cora/lod/vocabulary/CreativeCommons.java

@@ -186,12 +186,12 @@ public enum CreativeCommons implements Vocabulary {
     }
 
     @Override
-    public String getURLStub() {
+    public String getNamespace() {
         return IDENTIFIER;
     }
 
     @Override
-    public String getShortName() {
+    public String getNamespacePrefix() {
         return PREFIX;
     }
 

source/net/yacy/cora/lod/vocabulary/DCTerms.java

@@ -0,0 +1,44 @@
+package net.yacy.cora.lod.vocabulary;
+
+import java.util.Set;
+
+import net.yacy.cora.lod.Literal;
+import net.yacy.cora.lod.Vocabulary;
+
+public enum DCTerms implements Vocabulary {
+
+    references;
+
+    public final static String NAMESPACE = "http://purl.org/dc/terms/";
+    public final static String PREFIX = "dcterms";
+
+    private final String predicate;
+
+    private DCTerms() {
+        this.predicate = NAMESPACE + this.name().toLowerCase();
+    }
+
+    private DCTerms(String name) {
+        this.predicate = NAMESPACE + name;
+    }
+
+    @Override
+    public String getNamespace() {
+        return NAMESPACE;
+    }
+
+    @Override
+    public String getNamespacePrefix() {
+        return PREFIX;
+    }
+
+    @Override
+    public Set<Literal> getLiterals() {
+        return null;
+    }
+
+    @Override
+    public String getPredicate() {
+        return this.predicate;
+    }
+}

source/net/yacy/cora/lod/vocabulary/DublinCore.java

@@ -58,12 +58,12 @@ public enum DublinCore implements Vocabulary {
     }
 
     @Override
-    public String getURLStub() {
+    public String getNamespace() {
         return IDENTIFIER;
     }
 
     @Override
-    public String getShortName() {
+    public String getNamespacePrefix() {
         return PREFIX;
     }
 

source/net/yacy/cora/lod/vocabulary/Foaf.java

@@ -37,13 +37,13 @@ public enum Foaf implements Vocabulary {
     ;
 
     @Override
-    public String getURLStub() {
+    public String getNamespace() {
         // TODO Auto-generated method stub
         return null;
     }
 
     @Override
-    public String getShortName() {
+    public String getNamespacePrefix() {
         // TODO Auto-generated method stub
         return null;
     }

source/net/yacy/cora/lod/vocabulary/Geo.java

@@ -44,12 +44,12 @@ public enum Geo implements Vocabulary {
     }
 
     @Override
-    public String getURLStub() {
+    public String getNamespace() {
         return NAMESPACE;
     }
 
     @Override
-    public String getShortName() {
+    public String getNamespacePrefix() {
         return PREFIX;
     }
 

source/net/yacy/cora/lod/vocabulary/HttpHeader.java

@@ -96,12 +96,12 @@ public enum HttpHeader implements Vocabulary {
     }
 
     @Override
-    public String getURLStub() {
+    public String getNamespace() {
         return NAMESPACE;
     }
 
     @Override
-    public String getShortName() {
+    public String getNamespacePrefix() {
         return PREFIX;
     }
 

source/net/yacy/cora/lod/vocabulary/Owl.java

@@ -43,12 +43,12 @@ public enum Owl implements Vocabulary {
     }
 
     @Override
-    public String getURLStub() {
+    public String getNamespace() {
         return IDENTIFIER;
     }
 
     @Override
-    public String getShortName() {
+    public String getNamespacePrefix() {
         return PREFIX;
     }
 

source/net/yacy/cora/lod/vocabulary/Rdf.java

@@ -47,12 +47,12 @@ public enum Rdf implements Vocabulary {
     }
 
     @Override
-    public String getURLStub() {
+    public String getNamespace() {
         return IDENTIFIER;
     }
 
     @Override
-    public String getShortName() {
+    public String getNamespacePrefix() {
         return PREFIX;
     }
 

source/net/yacy/cora/lod/vocabulary/Tagging.java

@@ -35,24 +35,24 @@ import net.yacy.document.geolocalization.Localization;
 
 public class Tagging {
 
-    public final static String DEFAULT_NAMESPACE= "http://yacy.net/tagging#";
-    public final static String DEFAULT_PREFIX = "tag";
+    public final static String DEFAULT_NAMESPACE= "http://yacy.net/autotagging#";
+    public final static String DEFAULT_PREFIX = "tags";
 
     private final String navigatorName;
     private final Map<String, String> synonym2term;
     private final Map<String, String> term2synonym;
     private final Map<String, Set<String>> synonym2synonyms;
 
-    private String predicate, predicatePrefix, objectPrefix;
+    private String predicate, namespace, objectspace;
 
     public Tagging(String name) {
         this.navigatorName = name;
         this.synonym2term = new ConcurrentHashMap<String, String>();
         this.term2synonym = new ConcurrentHashMap<String, String>();
         this.synonym2synonyms = new ConcurrentHashMap<String, Set<String>>();
-        this.predicatePrefix = DEFAULT_NAMESPACE;
-        this.predicate = this.predicatePrefix + name;
-        this.objectPrefix = "";
+        this.namespace = DEFAULT_NAMESPACE;
+        this.predicate = this.namespace + name;
+        this.objectspace = null;
     }
 
     public Tagging(String name, File propFile) throws IOException {
@@ -68,14 +68,14 @@ public class Tagging {
 			    p = line.indexOf('#');
 			    if (p >= 0) {
 			        String comment = line.substring(p + 1).trim();
-                    if (comment.startsWith("predicate-prefix:")) {
-                        this.predicatePrefix = comment.substring(17).trim();
-                        if (!this.predicatePrefix.endsWith("/")) this.predicatePrefix += "/";
-                        this.predicate = this.predicatePrefix + name;
+                    if (comment.startsWith("namespace:")) {
+                        this.namespace = comment.substring(10).trim();
+                        if (!this.namespace.endsWith("/") && !this.namespace.endsWith("#")) this.namespace += "#";
+                        this.predicate = this.namespace + name;
                     }
-                    if (comment.startsWith("object-prefix:")) {
-                        this.objectPrefix = comment.substring(14).trim();
-                        if (!this.objectPrefix.endsWith("/")) this.objectPrefix += "/";
+                    if (comment.startsWith("objectspace:")) {
+                        this.objectspace = comment.substring(12).trim();
+                        if (!this.objectspace.endsWith("/") && !this.objectspace.endsWith("#")) this.objectspace += "#";
                     }
 			    	line = line.substring(0, p).trim();
 			    }
@@ -150,6 +150,10 @@ public class Tagging {
         return this.predicate;
     }
 
+    public String getObjectspace() {
+        return this.objectspace;
+    }
+
     private final String normalizeKey(String k) {
         k = k.trim();
         k = k.replaceAll(" \\+", ", "); // remove symbols that are bad in a query attribute

source/net/yacy/cora/lod/vocabulary/YaCyMetadata.java

@@ -74,9 +74,9 @@ public enum YaCyMetadata implements Vocabulary {
         "Cardinal lapp-2 {b256}",       // # of embedded links to applications
      */
 
-    public final static byte[] HASH_PREFIX = ASCII.getBytes("http://yacy.net/hash#");
+    public final static byte[] HASH_PREFIX = ASCII.getBytes("http://yacy.net/url#");
     public final static int HASH_PREFIX_LENGTH = HASH_PREFIX.length;
-    public final static String NAMESPACE = "http://yacy.net/vocabularies/yacymetadata#";
+    public final static String NAMESPACE = "http://yacy.net/md#";
     public final static String PREFIX = "yacy";
 
     private final String predicate;
@@ -93,12 +93,12 @@ public enum YaCyMetadata implements Vocabulary {
     }
 
     @Override
-    public String getURLStub() {
+    public String getNamespace() {
         return NAMESPACE;
     }
 
     @Override
-    public String getShortName() {
+    public String getNamespacePrefix() {
         return PREFIX;
     }
 

source/net/yacy/document/Document.java

@@ -56,6 +56,7 @@ import net.yacy.cora.document.Classification;
 import net.yacy.cora.document.MultiProtocolURI;
 import net.yacy.cora.document.UTF8;
 import net.yacy.cora.lod.JenaTripleStore;
+import net.yacy.cora.lod.vocabulary.DCTerms;
 import net.yacy.cora.lod.vocabulary.Owl;
 import net.yacy.cora.lod.vocabulary.Tagging;
 import net.yacy.cora.lod.vocabulary.YaCyMetadata;
@@ -216,10 +217,13 @@ dc_rights
      * @param tags
      */
     public void addMetatags(Map<String, Set<Tagging.Metatag>> tags) {
+        String subject = YaCyMetadata.hashURI(this.source.hash());
         for (String s: this.keywords) {
             tags.remove(s);
         }
         for (Map.Entry<String, Set<Tagging.Metatag>> e: tags.entrySet()) {
+            Tagging vocabulary = LibraryProvider.autotagging.getVocabulary(e.getKey());
+            String objectspace = vocabulary.getObjectspace();
             StringBuilder sb = new StringBuilder(e.getValue().size() * 20);
             for (Tagging.Metatag s: e.getValue()) {
                 String t = s.toString();
@@ -227,10 +231,11 @@ dc_rights
                     this.keywords.add(t);
                 }
                 sb.append(',').append(s.getObject());
+                if (objectspace != null) {
+                    JenaTripleStore.addTriple(subject, DCTerms.references.getPredicate(), objectspace + s.getObject());
+                }
             }
             // put to triplestore
-            String subject = YaCyMetadata.hashURI(this.source.hash());
-            Tagging vocabulary = LibraryProvider.autotagging.getVocabulary(e.getKey());
             JenaTripleStore.addTriple(subject, vocabulary.getPredicate(), sb.substring(1));
             JenaTripleStore.addTriple(subject, Owl.SameAs.getPredicate(), this.source.toNormalform(true, false));
         }

source/net/yacy/document/LibraryProvider.java

@@ -46,8 +46,7 @@ import net.yacy.document.geolocalization.OverarchingLocalization;
 import net.yacy.kelondro.logging.Log;
 import net.yacy.kelondro.util.FileUtils;
 
-public class LibraryProvider
-{
+public class LibraryProvider {
 
     public static final char tagPrefix = '$';
     public static final String path_to_source_dictionaries = "source";

source/net/yacy/kelondro/data/meta/MetadataVocabulary.java

@@ -41,12 +41,12 @@ public enum MetadataVocabulary implements Vocabulary {
     }
     
 	@Override
-	public String getURLStub() {
+	public String getNamespace() {
 		return IDENTIFIER;
 	}
 
 	@Override
-	public String getShortName() {
+	public String getNamespacePrefix() {
 		return PREFIX;
 	}