bundles/org.simantics.layer0x.ontology/src/org/simantics/operation/OperationResource.java

   1 package org.simantics.operation;
   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 OperationResource {
  12
  13     public final Resource AbstractContextualList;
  14     public final Resource ConditionalList;
  15     public final Resource ContextualList;
  16     public final Resource HasCondition;
  17     public final Resource HasElseElement;
  18     public final Resource HasThenElement;
  19     public final Resource Operation;
  20     public final Resource TypeBasedList;
  21
  22     public static class URIs {
  23         public static final String AbstractContextualList = "http://www.simantics.org/Layer0X-1.1/Operation/AbstractContextualList";
  24         public static final String ConditionalList = "http://www.simantics.org/Layer0X-1.1/Operation/ConditionalList";
  25         public static final String ContextualList = "http://www.simantics.org/Layer0X-1.1/Operation/ContextualList";
  26         public static final String HasCondition = "http://www.simantics.org/Layer0X-1.1/Operation/HasCondition";
  27         public static final String HasElseElement = "http://www.simantics.org/Layer0X-1.1/Operation/HasElseElement";
  28         public static final String HasThenElement = "http://www.simantics.org/Layer0X-1.1/Operation/HasThenElement";
  29         public static final String Operation = "http://www.simantics.org/Layer0X-1.1/Operation/Operation";
  30         public static final String TypeBasedList = "http://www.simantics.org/Layer0X-1.1/Operation/TypeBasedList";
  31     }
  32
  33     public static Resource getResourceOrNull(ReadGraph graph, String uri) {
  34         try {
  35             return graph.getResource(uri);
  36         } catch(DatabaseException e) {
  37             System.err.println(e.getMessage());
  38             return null;
  39         }
  40     }
  41
  42     public OperationResource(ReadGraph graph) {
  43         AbstractContextualList = getResourceOrNull(graph, URIs.AbstractContextualList);
  44         ConditionalList = getResourceOrNull(graph, URIs.ConditionalList);
  45         ContextualList = getResourceOrNull(graph, URIs.ContextualList);
  46         HasCondition = getResourceOrNull(graph, URIs.HasCondition);
  47         HasElseElement = getResourceOrNull(graph, URIs.HasElseElement);
  48         HasThenElement = getResourceOrNull(graph, URIs.HasThenElement);
  49         Operation = getResourceOrNull(graph, URIs.Operation);
  50         TypeBasedList = getResourceOrNull(graph, URIs.TypeBasedList);
  51     }
  52
  53     public static OperationResource getInstance(ReadGraph graph) {
  54         Session session = graph.getSession();
  55         OperationResource ret = session.peekService(OperationResource.class);
  56         if(ret == null) {
  57             QueryControl qc = graph.getService(QueryControl.class);
  58             ret = new OperationResource(qc.getIndependentGraph(graph));
  59             session.registerService(OperationResource.class, ret);
  60         }
  61         return ret;
  62     }
  63
  64     public static OperationResource getInstance(RequestProcessor session) throws DatabaseException {
  65         OperationResource ret = session.peekService(OperationResource.class);
  66         if(ret == null) {
  67             ret = session.syncRequest(new Read<OperationResource>() {
  68                 public OperationResource perform(ReadGraph graph) throws DatabaseException {
  69                     QueryControl qc = graph.getService(QueryControl.class);
  70                     return new OperationResource(qc.getIndependentGraph(graph));
  71                 }
  72             });
  73             session.registerService(OperationResource.class, ret);
  74         }
  75         return ret;
  76     }
  77
  78 }
  79