bundles/org.simantics.dublincore.ontology/src/org/simantics/layer0/DublinCore.java

   1 package org.simantics.layer0;
   2
   3 import org.simantics.db.RequestProcessor;
   4 import org.simantics.db.Resource;
   5 import org.simantics.db.ReadGraph;
   6 import org.simantics.db.request.Read;
   7 import org.simantics.db.Session;
   8 import org.simantics.db.exception.DatabaseException;
   9 import org.simantics.db.service.QueryControl;
  10
  11 public class DublinCore {
  12
  13     public final Resource Bar;
  14     public final Resource Contributor;
  15     public final Resource Coverage;
  16     public final Resource Creator;
  17     public final Resource Date;
  18     public final Resource Date_Inverse;
  19     public final Resource Description;
  20     public final Resource Foo;
  21     public final Resource Format;
  22     public final Resource Identifier;
  23     public final Resource Identifier_Inverse;
  24     public final Resource Language;
  25     public final Resource Publisher;
  26     public final Resource Relation;
  27     public final Resource Rights;
  28     public final Resource Source;
  29     public final Resource Subject;
  30     public final Resource Title;
  31     public final Resource Type;
  32
  33     public static class URIs {
  34         public static final String Bar = "http://www.simantics.org/DublinCore-1.1/Bar";
  35         public static final String Contributor = "http://www.simantics.org/DublinCore-1.1/Contributor";
  36         public static final String Coverage = "http://www.simantics.org/DublinCore-1.1/Coverage";
  37         public static final String Creator = "http://www.simantics.org/DublinCore-1.1/Creator";
  38         public static final String Date = "http://www.simantics.org/DublinCore-1.1/Date";
  39         public static final String Date_Inverse = "http://www.simantics.org/DublinCore-1.1/Date/Inverse";
  40         public static final String Description = "http://www.simantics.org/DublinCore-1.1/Description";
  41         public static final String Foo = "http://www.simantics.org/DublinCore-1.1/Foo";
  42         public static final String Format = "http://www.simantics.org/DublinCore-1.1/Format";
  43         public static final String Identifier = "http://www.simantics.org/DublinCore-1.1/Identifier";
  44         public static final String Identifier_Inverse = "http://www.simantics.org/DublinCore-1.1/Identifier/Inverse";
  45         public static final String Language = "http://www.simantics.org/DublinCore-1.1/Language";
  46         public static final String Publisher = "http://www.simantics.org/DublinCore-1.1/Publisher";
  47         public static final String Relation = "http://www.simantics.org/DublinCore-1.1/Relation";
  48         public static final String Rights = "http://www.simantics.org/DublinCore-1.1/Rights";
  49         public static final String Source = "http://www.simantics.org/DublinCore-1.1/Source";
  50         public static final String Subject = "http://www.simantics.org/DublinCore-1.1/Subject";
  51         public static final String Title = "http://www.simantics.org/DublinCore-1.1/Title";
  52         public static final String Type = "http://www.simantics.org/DublinCore-1.1/Type";
  53     }
  54
  55     public static Resource getResourceOrNull(ReadGraph graph, String uri) {
  56         try {
  57             return graph.getResource(uri);
  58         } catch(DatabaseException e) {
  59             System.err.println(e.getMessage());
  60             return null;
  61         }
  62     }
  63
  64     public DublinCore(ReadGraph graph) {
  65         Bar = getResourceOrNull(graph, URIs.Bar);
  66         Contributor = getResourceOrNull(graph, URIs.Contributor);
  67         Coverage = getResourceOrNull(graph, URIs.Coverage);
  68         Creator = getResourceOrNull(graph, URIs.Creator);
  69         Date = getResourceOrNull(graph, URIs.Date);
  70         Date_Inverse = getResourceOrNull(graph, URIs.Date_Inverse);
  71         Description = getResourceOrNull(graph, URIs.Description);
  72         Foo = getResourceOrNull(graph, URIs.Foo);
  73         Format = getResourceOrNull(graph, URIs.Format);
  74         Identifier = getResourceOrNull(graph, URIs.Identifier);
  75         Identifier_Inverse = getResourceOrNull(graph, URIs.Identifier_Inverse);
  76         Language = getResourceOrNull(graph, URIs.Language);
  77         Publisher = getResourceOrNull(graph, URIs.Publisher);
  78         Relation = getResourceOrNull(graph, URIs.Relation);
  79         Rights = getResourceOrNull(graph, URIs.Rights);
  80         Source = getResourceOrNull(graph, URIs.Source);
  81         Subject = getResourceOrNull(graph, URIs.Subject);
  82         Title = getResourceOrNull(graph, URIs.Title);
  83         Type = getResourceOrNull(graph, URIs.Type);
  84     }
  85
  86     public static DublinCore getInstance(ReadGraph graph) {
  87         Session session = graph.getSession();
  88         DublinCore ret = session.peekService(DublinCore.class);
  89         if(ret == null) {
  90             QueryControl qc = graph.getService(QueryControl.class);
  91             ret = new DublinCore(qc.getIndependentGraph(graph));
  92             session.registerService(DublinCore.class, ret);
  93         }
  94         return ret;
  95     }
  96
  97     public static DublinCore getInstance(RequestProcessor session) throws DatabaseException {
  98         DublinCore ret = session.peekService(DublinCore.class);
  99         if(ret == null) {
 100             ret = session.syncRequest(new Read<DublinCore>() {
 101                 public DublinCore perform(ReadGraph graph) throws DatabaseException {
 102                     QueryControl qc = graph.getService(QueryControl.class);
 103                     return new DublinCore(qc.getIndependentGraph(graph));
 104                 }
 105             });
 106             session.registerService(DublinCore.class, ret);
 107         }
 108         return ret;
 109     }
 110
 111 }
 112