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.layer0.utils;
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14 import java.util.HashMap;
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15 import java.util.Map;
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17 import org.simantics.db.Resource;
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20 * Service that creates unique names for resources and
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23 public class NameMap {
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26 Map<Resource, String> cache = new HashMap<Resource, String>();
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29 public NameMap(int maxLength) {
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30 this.maxLength = maxLength;
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33 protected boolean isValid(String name) {
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37 private static final int charA = 65;
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38 private static final int char0 = 48 - 26;
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40 public void clear() {
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45 public String getName(Resource resource) {
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46 String ret = cache.get(resource);
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47 while(ret == null) {
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49 byte[] c = new byte[5];
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51 for(int i=0;i<4;++i) {
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54 c[4-i] = (byte)(charA + lid);
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56 c[4-i] = (byte)(char0 + lid);
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59 ret = new String(c);
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61 cache.put(resource, ret);
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68 public static void main(String[] args) {
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69 NameMap m = new NameMap(24);
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70 for(int i=0;i<100;++i)
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71 System.out.println(m.getName(new Resource() {
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74 public int getThreadHash() {
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79 public long getResourceId() {
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84 public Resource get() {
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89 public boolean isPersistent() {
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94 public int compareTo(Resource o) {
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95 // TODO Auto-generated method stub
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100 public boolean equalsResource(Resource other) {
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101 return equals(other);
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108 public String getName(Resource[] resources) {
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110 for(Resource r : resources)
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