Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.graph.compiler / src / org / simantics / graph / compiler / internal / procedures / MergeEqualResources.java

diff --git a/bundles/org.simantics.graph.compiler/src/org/simantics/graph/compiler/internal/procedures/MergeEqualResources.java b/bundles/org.simantics.graph.compiler/src/org/simantics/graph/compiler/internal/procedures/MergeEqualResources.java
new file mode 100644 (file)
index 0000000..17ebec9
--- /dev/null
+++ b/bundles/org.simantics.graph.compiler/src/org/simantics/graph/compiler/internal/procedures/MergeEqualResources.java
@@ -0,0 +1,38 @@
+package org.simantics.graph.compiler.internal.procedures;\r
+\r
+import gnu.trove.list.array.TIntArrayList;\r
+import gnu.trove.map.hash.TIntIntHashMap;\r
+\r
+import org.simantics.graph.query.Paths;\r
+import org.simantics.graph.store.GraphStore;\r
+import org.simantics.graph.store.IdentityStore;\r
+\r
+public class MergeEqualResources implements Runnable {\r
+\r
+       GraphStore store;\r
+       Paths paths;\r
+               \r
+       public MergeEqualResources(Paths paths, GraphStore store) {\r
+           this.paths = paths;\r
+               this.store = store;\r
+       }\r
+\r
+       @Override\r
+       public void run() {\r
+               IdentityStore identities = store.identities;\r
+               if(identities.contains(paths.Equals)) {\r
+                       int equalsId = identities.pathToId(paths.Equals);\r
+                       identities.removeIdentity(equalsId);\r
+                       TIntArrayList rel = store.statements.extractRelation(equalsId);\r
+                       for(int i=0;i<rel.size();i+=2)\r
+                               identities.unify(rel.get(i), rel.get(i+1));\r
+               }\r
+               \r
+               TIntIntHashMap map = identities.extractUnifications();\r
+               do {\r
+                       store.map(map);                 \r
+                       map = identities.extractUnifications();\r
+               } while(!map.isEmpty());\r
+       }       \r
+\r
+}\r