Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.db.procore / src / org / simantics / db / procore / cluster / ClusterMap.java

diff --git a/bundles/org.simantics.db.procore/src/org/simantics/db/procore/cluster/ClusterMap.java b/bundles/org.simantics.db.procore/src/org/simantics/db/procore/cluster/ClusterMap.java
new file mode 100644 (file)
index 0000000..2962100
--- /dev/null
+++ b/bundles/org.simantics.db.procore/src/org/simantics/db/procore/cluster/ClusterMap.java
@@ -0,0 +1,95 @@
+/*******************************************************************************\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.db.procore.cluster;\r
+\r
+import gnu.trove.map.hash.TObjectIntHashMap;\r
+\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.impl.ClusterTraitsBase;\r
+import org.simantics.db.service.ClusterUID;\r
+import org.simantics.db.service.ResourceUID;\r
+\r
+public class ClusterMap {\r
+    private ForeignTable foreignTable;\r
+    //private FlatTable flatTable;\r
+    private TObjectIntHashMap<ClusterUID> hashMap;\r
+    public ClusterMap(ForeignTable foreignTable, FlatTable flatTable) {\r
+        this.foreignTable = foreignTable;\r
+        //this.flatTable = flatTable;\r
+        hashMap = null;\r
+    }\r
+    public void compact() {\r
+        if(hashMap == null)\r
+            return;\r
+        hashMap.compact();\r
+    }\r
+    /*\r
+     * 13 bytes for each element. Approx capacity = 3 * size\r
+     */\r
+    public int getUsedSpace() {\r
+        if(hashMap == null)\r
+            return 0;\r
+        return 3 * 13 * hashMap.size();\r
+    }\r
+    public int getForeignResourceIndex(int reference)\r
+    throws DatabaseException {\r
+        if (ClusterTraits.isFlat(reference))\r
+            throw new DatabaseException("Flat reference is not supported yet.");\r
+        else {\r
+            return ClusterTraits.getResourceIndexFromForeignReference(reference);\r
+        }\r
+    }\r
+    public final ResourceUID getResourceUID(int reference) throws DatabaseException {\r
+        if (ClusterTraits.isFlat(reference))\r
+            throw new DatabaseException("Flat reference is not supported yet. reference=" + reference);\r
+        else {\r
+            int foreignIndex = ClusterTraits.getForeignIndexFromReference(reference);\r
+            return foreignTable.getResourceUID(foreignIndex);\r
+        }\r
+    }\r
+    public int getForeignReferenceOrCreateByResourceKey(int resourceKey, ClusterUID clusterUID)\r
+    throws DatabaseException {\r
+        int resourceIndex = ClusterTraits.getResourceIndexFromResourceKey(resourceKey);\r
+        return getForeignReferenceOrCreateByResourceIndex(resourceIndex, clusterUID);\r
+    }\r
+    public int getForeignReferenceOrCreateByResourceIndex(int resourceIndex, ClusterUID clusterUID)\r
+    throws DatabaseException {\r
+        if (ClusterTraitsBase.isIllegalResourceIndex(resourceIndex))\r
+            throw new DatabaseException("Illegal resource index=" + resourceIndex + ".");\r
+        if (null == hashMap)\r
+            hashMap = foreignTable.getHashMap();\r
+        int foreignIndex = hashMap.get(clusterUID);\r
+        if (0 == foreignIndex) {\r
+            foreignIndex = foreignTable.createForeign(clusterUID.toRID(resourceIndex));\r
+            hashMap.put(clusterUID, foreignIndex);\r
+        }\r
+        return ClusterTraits.createForeignReference(foreignIndex, resourceIndex); \r
+    }\r
+    public int getForeignReferenceOrZero(int resourceIndex, ClusterUID clusterUID)\r
+    throws DatabaseException {\r
+        // This is guaranteed by implementation\r
+//        if(clusterId == 1) return (resourceIndex<<16) + 0x80000001;\r
+        //return ClusterTraits.createForeignReference(1, resourceIndex); \r
+//        new Exception("getForeignReferenceOrZero " + clusterId).printStackTrace();\r
+        if (null == hashMap)\r
+            hashMap = foreignTable.getHashMap();\r
+        if (ClusterUID.Null.equals(clusterUID))\r
+            throw new DatabaseException("Illegal cluster uid " + clusterUID);\r
+        if (0 == resourceIndex)\r
+            throw new DatabaseException("Illegal resource index " + resourceIndex);\r
+        int foreignIndex = hashMap.get(clusterUID);\r
+        if (0 == foreignIndex)\r
+            return 0;\r
+        //System.err.println("foreignIndex for " + clusterId + " = " + foreignIndex);\r
+        return ClusterTraits.createForeignReference(foreignIndex, resourceIndex); \r
+    }\r
+}\r