Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/ConstraintConjunction.java b/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/ConstraintConjunction.java
new file mode 100644 (file)
index 0000000..19815c8
--- /dev/null
+++ b/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/ConstraintConjunction.java
@@ -0,0 +1,66 @@
+/*******************************************************************************\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.AndInstruction;\r
+import org.simantics.mapping.constraint.instructions.IInstruction;\r
+import org.simantics.utils.datastructures.persistent.ImmutableSet;\r
+\r
+public class ConstraintConjunction implements IConstraint {\r
+\r
+       IConstraint[] constraints;\r
+       \r
+       public ConstraintConjunction(IConstraint... constraints) {\r
+               this.constraints = constraints;\r
+       }\r
+\r
+       @Override\r
+       public ImmutableSet<Resource> binds() {\r
+               ImmutableSet<Resource> ret = ImmutableSet.empty();\r
+               for(IConstraint c : constraints)\r
+                       ret = ret.addAll(c.binds());\r
+               return ret;\r
+       }\r
+\r
+       @Override\r
+       public IInstruction createInstruction(\r
+                       TObjectIntHashMap<Resource> variableIds,\r
+                       ImmutableSet<Resource> bound) throws TooManyUnboundVariablesException {\r
+               IInstruction[] instructions = new IInstruction[constraints.length];\r
+               for(int i=0;i<constraints.length;++i) {\r
+                       instructions[i] = constraints[i].createInstruction(variableIds, bound);\r
+                       bound = bound.addAll(constraints[i].binds());\r
+               }\r
+               return new AndInstruction(instructions);\r
+       }\r
+\r
+       @Override\r
+       public int isApplicable(ImmutableSet<Resource> bound) {\r
+               int ret = Integer.MAX_VALUE;\r
+               for(int i=0;i<constraints.length;++i) {\r
+                       int temp = constraints[i].isApplicable(bound);\r
+                       if(temp < ret) {\r
+                               if(temp == 0)\r
+                                       return 0;\r
+                               ret = temp;                             \r
+                       }\r
+                       bound = bound.addAll(constraints[i].binds());\r
+               }\r
+               return ret;\r
+       }\r
+\r
+       \r
+       \r
+}\r