Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.mapping / src / org / simantics / mapping / constraint / TripletConstraint.java

diff --git a/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/TripletConstraint.java b/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/TripletConstraint.java
new file mode 100644 (file)
index 0000000..e13a331
--- /dev/null
+++ b/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/TripletConstraint.java
@@ -0,0 +1,83 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.mapping.constraint;\r
+\r
+import gnu.trove.map.hash.TObjectIntHashMap;\r
+\r
+import org.simantics.db.Resource;\r
+import org.simantics.mapping.constraint.instructions.IInstruction;\r
+import org.simantics.mapping.constraint.instructions.TripletInstruction;\r
+import org.simantics.mapping.constraint.instructions.TripletObjectQuery;\r
+import org.simantics.mapping.constraint.instructions.TripletPredicateObjectQuery;\r
+import org.simantics.mapping.constraint.instructions.TripletPredicateQuery;\r
+import org.simantics.utils.datastructures.persistent.ImmutableSet;\r
+\r
+public class TripletConstraint implements IConstraint {\r
+\r
+       Resource variable0;\r
+       Resource variable1;\r
+       Resource variable2;\r
+       Resource predicate;             \r
+\r
+       public TripletConstraint(Resource variable0, Resource variable1,\r
+                       Resource variable2, Resource predicate) {               \r
+               this.variable0 = variable0;\r
+               this.variable1 = variable1;\r
+               this.variable2 = variable2;\r
+               this.predicate = predicate;\r
+       }\r
+       \r
+       public TripletConstraint(Resource variable0, Resource variable1,\r
+                       Resource variable2) {\r
+               this(variable0, variable1, variable2, null);\r
+       }\r
+\r
+       @Override\r
+       public ImmutableSet<Resource> binds() {\r
+               return ImmutableSet.of(variable0, variable1, variable2);\r
+       }\r
+\r
+       @Override\r
+       public IInstruction createInstruction(\r
+                       TObjectIntHashMap<Resource> variableIds,\r
+                       ImmutableSet<Resource> bound) throws TooManyUnboundVariablesException {\r
+               int id0 = variableIds.get(variable0);\r
+               int id1 = variableIds.get(variable1);\r
+               int id2 = variableIds.get(variable2);\r
+               if(bound.contains(variable0)) {\r
+                       if(bound.contains(variable1)) {\r
+                               if(bound.contains(variable2))\r
+                                       return new TripletInstruction(id0, id1, id2);\r
+                               else\r
+                                       return new TripletObjectQuery(id0, id1, id2);\r
+                       }\r
+                       else {\r
+                               if(bound.contains(variable2))\r
+                                       return new TripletPredicateQuery(id0, id1, id2, predicate);\r
+                               else\r
+                                       return new TripletPredicateObjectQuery(id0, id1, id2, predicate);\r
+                       }               \r
+               }\r
+               else {\r
+                       throw new TooManyUnboundVariablesException();                   \r
+               }\r
+       }\r
+\r
+       @Override\r
+       public int isApplicable(ImmutableSet<Resource> bound) {\r
+               if(bound.contains(variable0))\r
+                       return Integer.MAX_VALUE;\r
+               else\r
+                       return 0;\r
+       }\r
+\r
+}\r