bundles/org.simantics.layer0x.ontology/src/org/simantics/layer0/PredicateResource.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 PredicateResource {
  12
  13     public final Resource AppliesFirst;
  14     public final Resource AppliesThen;
  15     public final Resource BinaryPredicate;
  16     public final Resource CompositePredicate;
  17     public final Resource Conjunction;
  18     public final Resource Disjunction;
  19     public final Resource HasBinaryPredicate;
  20     public final Resource HasPredicate;
  21     public final Resource IntersectionPredicate;
  22     public final Resource InversePredicate;
  23     public final Resource Negation;
  24     public final Resource OrderedSetElements;
  25     public final Resource Predicate;
  26     public final Resource TransitiveClosure;
  27     public final Resource UnionPredicate;
  28
  29     public static class URIs {
  30         public static final String AppliesFirst = "http://www.simantics.org/Layer0X-1.1/Predicate/AppliesFirst";
  31         public static final String AppliesThen = "http://www.simantics.org/Layer0X-1.1/Predicate/AppliesThen";
  32         public static final String BinaryPredicate = "http://www.simantics.org/Layer0X-1.1/Predicate/BinaryPredicate";
  33         public static final String CompositePredicate = "http://www.simantics.org/Layer0X-1.1/Predicate/CompositePredicate";
  34         public static final String Conjunction = "http://www.simantics.org/Layer0X-1.1/Predicate/Conjunction";
  35         public static final String Disjunction = "http://www.simantics.org/Layer0X-1.1/Predicate/Disjunction";
  36         public static final String HasBinaryPredicate = "http://www.simantics.org/Layer0X-1.1/Predicate/HasBinaryPredicate";
  37         public static final String HasPredicate = "http://www.simantics.org/Layer0X-1.1/Predicate/HasPredicate";
  38         public static final String IntersectionPredicate = "http://www.simantics.org/Layer0X-1.1/Predicate/IntersectionPredicate";
  39         public static final String InversePredicate = "http://www.simantics.org/Layer0X-1.1/Predicate/InversePredicate";
  40         public static final String Negation = "http://www.simantics.org/Layer0X-1.1/Predicate/Negation";
  41         public static final String OrderedSetElements = "http://www.simantics.org/Layer0X-1.1/Predicate/OrderedSetElements";
  42         public static final String Predicate = "http://www.simantics.org/Layer0X-1.1/Predicate/Predicate";
  43         public static final String TransitiveClosure = "http://www.simantics.org/Layer0X-1.1/Predicate/TransitiveClosure";
  44         public static final String UnionPredicate = "http://www.simantics.org/Layer0X-1.1/Predicate/UnionPredicate";
  45     }
  46
  47     public static Resource getResourceOrNull(ReadGraph graph, String uri) {
  48         try {
  49             return graph.getResource(uri);
  50         } catch(DatabaseException e) {
  51             System.err.println(e.getMessage());
  52             return null;
  53         }
  54     }
  55
  56     public PredicateResource(ReadGraph graph) {
  57         AppliesFirst = getResourceOrNull(graph, URIs.AppliesFirst);
  58         AppliesThen = getResourceOrNull(graph, URIs.AppliesThen);
  59         BinaryPredicate = getResourceOrNull(graph, URIs.BinaryPredicate);
  60         CompositePredicate = getResourceOrNull(graph, URIs.CompositePredicate);
  61         Conjunction = getResourceOrNull(graph, URIs.Conjunction);
  62         Disjunction = getResourceOrNull(graph, URIs.Disjunction);
  63         HasBinaryPredicate = getResourceOrNull(graph, URIs.HasBinaryPredicate);
  64         HasPredicate = getResourceOrNull(graph, URIs.HasPredicate);
  65         IntersectionPredicate = getResourceOrNull(graph, URIs.IntersectionPredicate);
  66         InversePredicate = getResourceOrNull(graph, URIs.InversePredicate);
  67         Negation = getResourceOrNull(graph, URIs.Negation);
  68         OrderedSetElements = getResourceOrNull(graph, URIs.OrderedSetElements);
  69         Predicate = getResourceOrNull(graph, URIs.Predicate);
  70         TransitiveClosure = getResourceOrNull(graph, URIs.TransitiveClosure);
  71         UnionPredicate = getResourceOrNull(graph, URIs.UnionPredicate);
  72     }
  73
  74     public static PredicateResource getInstance(ReadGraph graph) {
  75         Session session = graph.getSession();
  76         PredicateResource ret = session.peekService(PredicateResource.class);
  77         if(ret == null) {
  78             QueryControl qc = graph.getService(QueryControl.class);
  79             ret = new PredicateResource(qc.getIndependentGraph(graph));
  80             session.registerService(PredicateResource.class, ret);
  81         }
  82         return ret;
  83     }
  84
  85     public static PredicateResource getInstance(RequestProcessor session) throws DatabaseException {
  86         PredicateResource ret = session.peekService(PredicateResource.class);
  87         if(ret == null) {
  88             ret = session.syncRequest(new Read<PredicateResource>() {
  89                 public PredicateResource perform(ReadGraph graph) throws DatabaseException {
  90                     QueryControl qc = graph.getService(QueryControl.class);
  91                     return new PredicateResource(qc.getIndependentGraph(graph));
  92                 }
  93             });
  94             session.registerService(PredicateResource.class, ret);
  95         }
  96         return ret;
  97     }
  98
  99 }
 100