--- /dev/null
+/*******************************************************************************\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