1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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12 package org.simantics.db.procore.cluster;
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14 import gnu.trove.map.hash.TIntShortHashMap;
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16 import org.simantics.db.exception.DatabaseException;
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17 import org.simantics.db.impl.TableSizeListener;
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18 import org.simantics.db.service.ClusterUID;
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19 import org.simantics.db.service.ResourceUID;
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21 public class ClusterMapSmall {
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22 private TableSizeListener sizeListener;
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23 private ForeignTableSmall foreignTable;
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24 //private TObjectIntHashMap<ResourceUID> hashMap;
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25 private TIntShortHashMap hashMap;
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26 public ClusterMapSmall(TableSizeListener sizeListener, ForeignTableSmall foreignTable) {
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27 this.sizeListener = sizeListener;
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28 this.foreignTable = foreignTable;
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31 public ResourceUID getForeignResourceUID(short reference) {
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32 assert(reference >>> 15 > 0);
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33 short foreignIndex = (short)(reference ^ 1<<15);
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34 return foreignTable.getResourceUID(foreignIndex);
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36 public void compact() {
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37 if(hashMap == null) return;
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39 sizeListener.resized();
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41 public int getUsedSpace() {
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42 if(hashMap == null) return 0;
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43 int size = hashMap.size();
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44 int cap = hashMap.capacity();
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45 // int[], Object[], actual objects
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46 return cap*(4+ObjectSizes.POINTER_SIZE)+size*ObjectSizes.ResourceUIDSize;
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49 public short getForeignReferenceOrCreateByResourceKey(int resourceKey, ClusterUID uid) throws DatabaseException {
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50 if (null == hashMap)
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51 hashMap = foreignTable.getResourceHashMap();
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52 short foreignIndex = hashMap.get(resourceKey);
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53 if (0 == foreignIndex) {
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54 if (hashMap.size() >= ClusterTraitsSmall.FOREIGN_INDEX_MAX)
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55 throw new OutOfSpaceException("Out of space for foreign resources=" + hashMap.size());
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56 foreignIndex = foreignTable.createForeign(resourceKey, uid);
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57 hashMap.put(resourceKey, foreignIndex);
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59 return foreignIndex;
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62 public short getForeignReferenceOrZero(int resourceKey) throws DatabaseException {
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63 if (null == hashMap)
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64 hashMap = foreignTable.getResourceHashMap();
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65 return hashMap.get(resourceKey);
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