Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/instructions/CombinedInstruction.java b/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/instructions/CombinedInstruction.java
new file mode 100644 (file)
index 0000000..95134af
--- /dev/null
+++ b/bundles/org.simantics.mapping/src/org/simantics/mapping/constraint/instructions/CombinedInstruction.java
@@ -0,0 +1,119 @@
+/*******************************************************************************\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.instructions;\r
+\r
+import gnu.trove.map.hash.TIntIntHashMap;\r
+import gnu.trove.set.hash.TIntHashSet;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.mapping.IContextualModification;\r
+\r
+public abstract class CombinedInstruction implements IInstruction {\r
+       IInstruction[] instructions;\r
+       \r
+       public CombinedInstruction(IInstruction... instructions) {\r
+               this.instructions = instructions;\r
+       }       \r
+       \r
+       class CompositeClaim implements IContextualModification {\r
+\r
+               IContextualModification modification;\r
+               int instructionId;\r
+               \r
+               public CompositeClaim(IContextualModification modification, int instructionId) {\r
+                       this.modification = modification;\r
+                       this.instructionId = instructionId;\r
+               }\r
+\r
+               @Override\r
+               public void perform(WriteGraph g, Object[] bindings) throws DatabaseException {\r
+                       modification.perform(g, bindings);\r
+                       for(int i=instructionId+1;i<instructions.length;++i)\r
+                               instructions[i].doClaim(g, bindings);\r
+               }\r
+               \r
+       }\r
+       \r
+       @Override\r
+       public IContextualModification claim(ReadGraph g, Object[] bindings) throws DatabaseException {\r
+               for(int instructionId=0;instructionId<instructions.length;++instructionId) {\r
+                       IContextualModification modification = instructions[instructionId].claim(g, bindings);\r
+                       if(modification != null) {\r
+                               if(instructionId==instructions.length-1)\r
+                                       return modification;\r
+                               else \r
+                                       return new CompositeClaim(modification, instructionId);\r
+                       }\r
+               }\r
+               return null;\r
+       }\r
+\r
+       class CompositeDeny implements IContextualModification {\r
+\r
+               IContextualModification modification;\r
+               int instructionId;\r
+               \r
+               public CompositeDeny(IContextualModification modification, int instructionId) {\r
+                       this.modification = modification;\r
+                       this.instructionId = instructionId;\r
+               }\r
+\r
+               @Override\r
+               public void perform(WriteGraph g, Object[] bindings) throws DatabaseException {\r
+                       modification.perform(g, bindings);\r
+                       for(int i=instructionId+1;i<instructions.length;++i)\r
+                               instructions[i].doDeny(g, bindings);\r
+               }\r
+               \r
+       }\r
+\r
+       @Override\r
+       public IContextualModification deny(ReadGraph g, Object[] bindings) throws DatabaseException {\r
+               for(int instructionId=0;instructionId<instructions.length;++instructionId) {\r
+                       IContextualModification modification = instructions[instructionId].deny(g, bindings);\r
+                       if(modification != null) {\r
+                               if(instructionId==instructions.length-1)\r
+                                       return modification;\r
+                               else \r
+                                       return new CompositeDeny(modification, instructionId);\r
+                       }\r
+               }\r
+               return null;\r
+       }\r
+\r
+       @Override\r
+       public void doClaim(WriteGraph g, Object[] bindings) throws DatabaseException {\r
+               for(int i=0;i<instructions.length;++i)\r
+                       instructions[i].doClaim(g, bindings);           \r
+       }\r
+\r
+       @Override\r
+       public void doDeny(WriteGraph g, Object[] bindings) throws DatabaseException {\r
+               for(int i=0;i<instructions.length;++i)\r
+                       instructions[i].doDeny(g, bindings);                                    \r
+       }\r
+\r
+       @Override\r
+       public void collectVariables(TIntHashSet reads, TIntHashSet writes) {\r
+               for(IInstruction inst : instructions)\r
+                       inst.collectVariables(reads, writes);\r
+       }       \r
+       \r
+       @Override\r
+       public void mapVariables(TIntIntHashMap map) {\r
+               for(IInstruction inst : instructions)\r
+                       inst.mapVariables(map);\r
+       }\r
+\r
+}\r