svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / resource / impl / DefaultResourceManager.java @ 40435
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1 | 40435 | jjdelcerro | package org.gvsig.fmap.dal.resource.impl; |
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2 | |||
3 | import java.lang.reflect.InvocationTargetException; |
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4 | import java.util.HashMap; |
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5 | import java.util.Iterator; |
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6 | import java.util.List; |
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7 | import java.util.Map; |
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8 | import java.util.Map.Entry; |
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9 | import java.util.Timer; |
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10 | import java.util.TimerTask; |
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11 | |||
12 | import org.slf4j.Logger; |
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13 | import org.slf4j.LoggerFactory; |
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14 | |||
15 | import org.gvsig.fmap.dal.DALLocator; |
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16 | import org.gvsig.fmap.dal.DataParameters; |
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17 | import org.gvsig.fmap.dal.exception.CopyParametersException; |
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18 | import org.gvsig.fmap.dal.exception.DataException; |
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19 | import org.gvsig.fmap.dal.exception.InitializeException; |
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20 | import org.gvsig.fmap.dal.resource.Resource; |
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21 | import org.gvsig.fmap.dal.resource.ResourceParameters; |
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22 | import org.gvsig.fmap.dal.resource.exception.AccessResourceException; |
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23 | import org.gvsig.fmap.dal.resource.exception.DisposeResorceManagerException; |
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24 | import org.gvsig.fmap.dal.resource.exception.ResourceException; |
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25 | import org.gvsig.fmap.dal.resource.exception.ResourceNotClosedOnDisposeManagerException; |
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26 | import org.gvsig.fmap.dal.resource.exception.ResourceNotRegisteredException; |
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27 | import org.gvsig.fmap.dal.resource.spi.AbstractResource; |
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28 | import org.gvsig.fmap.dal.resource.spi.ResourceManagerProviderServices; |
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29 | import org.gvsig.fmap.dal.resource.spi.ResourceProvider; |
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30 | import org.gvsig.tools.ToolsLocator; |
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31 | import org.gvsig.tools.observer.Observer; |
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32 | import org.gvsig.tools.observer.impl.DelegateWeakReferencingObservable; |
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33 | |||
34 | |||
35 | public class DefaultResourceManager implements ResourceManagerProviderServices { |
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36 | |||
37 | final static private String DATA_MANAGER_RESOURCE = "Data.manager.resources"; |
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38 | final static private String DATA_MANAGER_RESOURCE_PARAMS = "Data.manager.resources.params"; |
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39 | |||
40 | // FIXME: rellenar las cadenas
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41 | private static final String DATA_MANAGER_RESOURCE_DESCRIPTION = "DAL Resources types"; |
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42 | private static final String DATA_MANAGER_RESOURCE_PARAMS_DESCRIPTION = "DAL Resources types Parameters"; |
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43 | |||
44 | private Map resources = new HashMap(); |
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45 | |||
46 | private DelegateWeakReferencingObservable delegateObservable = new DelegateWeakReferencingObservable(this); |
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47 | |||
48 | private Timer timer = null; |
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49 | private Logger logger; |
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50 | |||
51 | private long mlsecondsToBeIdle = 0; |
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52 | |||
53 | public DefaultResourceManager() {
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54 | /*
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55 | * Create te extensions point in te registry.
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56 | */
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57 | ToolsLocator.getExtensionPointManager().add(DATA_MANAGER_RESOURCE, |
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58 | DATA_MANAGER_RESOURCE_DESCRIPTION); |
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59 | |||
60 | ToolsLocator.getExtensionPointManager().add( |
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61 | DATA_MANAGER_RESOURCE_PARAMS, |
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62 | DATA_MANAGER_RESOURCE_PARAMS_DESCRIPTION); |
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63 | } |
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64 | |||
65 | public Logger getLogger() { |
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66 | if (this.logger == null) { |
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67 | this.logger = LoggerFactory.getLogger(this.getClass()); |
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68 | } |
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69 | return this.logger; |
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70 | } |
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71 | |||
72 | public synchronized void remove(Resource resource) |
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73 | throws DataException {
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74 | remove(resource.getName()); |
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75 | } |
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76 | |||
77 | public synchronized void remove(String name) |
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78 | throws DataException {
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79 | ResourceProvider res = (ResourceProvider) this.resources.get(name);
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80 | if (res == null){ |
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81 | throw new IllegalArgumentException("Resource not register:" + name); |
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82 | } |
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83 | if (res.getConsumersCount() < 1) { |
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84 | this.resources.remove(name);
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85 | res.notifyDispose(); |
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86 | } |
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87 | res = null;
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88 | } |
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89 | |||
90 | public synchronized Resource getResource(String key) { |
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91 | return (Resource)this.resources.get(key); |
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92 | } |
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93 | |||
94 | public synchronized Iterator iterator() { |
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95 | return this.resources.values().iterator(); |
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96 | } |
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97 | |||
98 | public void addObserver(Observer o) { |
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99 | // TODO a?adir el observador a los recursos que ya existiesen
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100 | this.delegateObservable.addObserver(o);
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101 | } |
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102 | |||
103 | public void deleteObserver(Observer o) { |
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104 | this.delegateObservable.deleteObserver(o);
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105 | } |
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106 | |||
107 | public void deleteObservers() { |
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108 | this.delegateObservable.deleteObservers();
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109 | } |
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110 | |||
111 | public synchronized void collectResources() throws |
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112 | DataException { |
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113 | ResourceProvider res; |
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114 | Iterator iter = this.resources.entrySet().iterator(); |
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115 | while (iter.hasNext()) {
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116 | Entry entry = (Entry) iter.next(); |
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117 | res = (ResourceProvider) entry.getValue(); |
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118 | if (res.getConsumersCount() < 1) { |
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119 | res.closeRequest(); |
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120 | res.notifyDispose(); |
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121 | iter.remove(); |
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122 | continue;
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123 | } |
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124 | if (mlsecondsToBeIdle > 0 |
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125 | && System.currentTimeMillis()
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126 | - res.getLastTimeUsed() > mlsecondsToBeIdle) { |
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127 | |||
128 | } |
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129 | |||
130 | } |
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131 | } |
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132 | |||
133 | private synchronized AbstractResource findResource(ResourceParameters params) { |
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134 | AbstractResource res; |
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135 | Iterator iter = this.resources.values().iterator(); |
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136 | while (iter.hasNext()) {
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137 | res = (AbstractResource) iter.next(); |
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138 | try {
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139 | if (res.isThis(params)) {
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140 | return res;
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141 | } |
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142 | } catch (ResourceException e) {
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143 | getLogger() |
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144 | .warn( |
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145 | "Se ha producido un error comprobando si se puede reutilizar el recurso.",
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146 | e); |
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147 | } catch (CopyParametersException e) {
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148 | getLogger() |
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149 | .warn( |
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150 | "Se ha producido un error comprobando si se puede reutilizar el recurso.",
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151 | e); |
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152 | } |
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153 | } |
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154 | return null; |
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155 | } |
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156 | |||
157 | private synchronized AbstractResource addResource(AbstractResource resource) |
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158 | throws AccessResourceException {
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159 | resources.put(resource.getName(), resource); |
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160 | resource.addObservers(this.delegateObservable);
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161 | return resource;
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162 | } |
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163 | |||
164 | public void startResourceCollector(long milis, Observer observer) { |
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165 | if (this.timer == null){ |
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166 | this.timer = new Timer(); |
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167 | } else{
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168 | this.timer.cancel();
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169 | } |
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170 | // TODO observer
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171 | this.timer.scheduleAtFixedRate(new TimerTask() { |
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172 | |||
173 | |||
174 | public void run() { |
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175 | try {
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176 | DALLocator.getResourceManager().collectResources(); |
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177 | } catch (DataException e) {
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178 | // TODO Notificar con el observer
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179 | } |
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180 | } |
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181 | |||
182 | }, milis, milis); |
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183 | } |
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184 | |||
185 | public void stopResourceCollector() { |
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186 | if (this.timer != null) { |
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187 | this.timer.cancel();
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188 | } |
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189 | |||
190 | } |
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191 | |||
192 | public DataParameters createParameters(String type, Object[] args) |
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193 | throws InitializeException {
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194 | try {
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195 | DataParameters parameters; |
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196 | if (args == null) { |
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197 | parameters = (DataParameters) ToolsLocator.getExtensionPointManager() |
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198 | .get( |
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199 | DATA_MANAGER_RESOURCE_PARAMS).create(type); |
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200 | } else {
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201 | |||
202 | parameters = (DataParameters) ToolsLocator.getExtensionPointManager() |
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203 | .get(DATA_MANAGER_RESOURCE_PARAMS).create(type, args); |
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204 | } |
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205 | if (parameters == null){ |
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206 | throw new ResourceNotRegisteredException(type); |
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207 | } |
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208 | return parameters;
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209 | } catch (InstantiationException e) { |
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210 | throw new InitializeException(type, e); |
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211 | } catch (IllegalAccessException e) { |
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212 | throw new InitializeException(type, e); |
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213 | } catch (SecurityException e) { |
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214 | throw new InitializeException(type, e); |
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215 | } catch (IllegalArgumentException e) { |
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216 | throw new InitializeException(type, e); |
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217 | } catch (NoSuchMethodException e) { |
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218 | throw new InitializeException(type, e); |
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219 | } catch (InvocationTargetException e) { |
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220 | throw new InitializeException(type, e); |
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221 | } |
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222 | } |
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223 | |||
224 | public DataParameters createParameters(String type) |
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225 | throws InitializeException {
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226 | return createParameters(type, null); |
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227 | } |
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228 | |||
229 | public ResourceProvider createAddResource(String type, Object[] params) |
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230 | throws InitializeException {
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231 | return createAddResource((ResourceParameters) createParameters(type,
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232 | params)); |
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233 | } |
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234 | |||
235 | public ResourceProvider createResource(String type, Object[] params) |
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236 | throws InitializeException {
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237 | return createResource((ResourceParameters) createParameters(type,
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238 | params)); |
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239 | } |
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240 | |||
241 | public ResourceProvider createResource(ResourceParameters params)
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242 | throws InitializeException {
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243 | AbstractResource resource = this.findResource(params);
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244 | if (resource != null) { |
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245 | return resource;
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246 | } |
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247 | |||
248 | try {
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249 | |||
250 | resource = (AbstractResource) ToolsLocator |
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251 | .getExtensionPointManager().get(DATA_MANAGER_RESOURCE) |
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252 | .create( |
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253 | params.getTypeName(), new Object[] { params } |
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254 | ); |
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255 | if (resource == null) { |
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256 | throw new ResourceNotRegisteredException(params.getTypeName()); |
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257 | } |
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258 | } catch (InstantiationException e) { |
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259 | throw new InitializeException(e); |
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260 | } catch (IllegalAccessException e) { |
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261 | throw new InitializeException(e); |
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262 | } catch (SecurityException e) { |
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263 | throw new InitializeException(e); |
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264 | } catch (IllegalArgumentException e) { |
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265 | throw new InitializeException(e); |
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266 | } catch (NoSuchMethodException e) { |
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267 | throw new InitializeException(e); |
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268 | } catch (InvocationTargetException e) { |
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269 | throw new InitializeException(e); |
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270 | } |
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271 | |||
272 | return resource;
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273 | } |
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274 | |||
275 | public ResourceProvider createAddResource(ResourceParameters params)
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276 | throws InitializeException {
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277 | |||
278 | try {
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279 | return addResource((AbstractResource) createResource(params));
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280 | } catch (AccessResourceException e) {
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281 | throw new InitializeException(params.getTypeName(), e); |
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282 | } |
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283 | } |
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284 | |||
285 | public boolean register(String type, String description, |
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286 | Class resourceHandler, Class resourceParams) { |
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287 | |||
288 | |||
289 | ToolsLocator.getExtensionPointManager().add(DATA_MANAGER_RESOURCE, |
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290 | DATA_MANAGER_RESOURCE_DESCRIPTION).append(type, description, |
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291 | resourceHandler); |
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292 | |||
293 | ToolsLocator.getExtensionPointManager().add( |
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294 | DATA_MANAGER_RESOURCE_PARAMS, |
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295 | DATA_MANAGER_RESOURCE_PARAMS_DESCRIPTION).append(type, |
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296 | description, resourceParams); |
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297 | |||
298 | return true; |
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299 | } |
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300 | |||
301 | public List getResourceProviders() { |
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302 | return ToolsLocator.getExtensionPointManager().get(
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303 | DATA_MANAGER_RESOURCE).getNames(); |
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304 | } |
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305 | |||
306 | public synchronized void closeResources() throws DataException { |
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307 | this.collectResources();
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308 | Resource res; |
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309 | Iterator iter = this.resources.values().iterator(); |
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310 | while (iter.hasNext()) {
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311 | res = (Resource) iter.next(); |
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312 | res.closeRequest(); |
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313 | } |
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314 | } |
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315 | |||
316 | public synchronized void dispose() throws DisposeResorceManagerException { |
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317 | DisposeResorceManagerException exception = new DisposeResorceManagerException();
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318 | |||
319 | try {
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320 | this.collectResources();
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321 | } catch (DataException e) {
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322 | exception.add(e); |
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323 | } |
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324 | Resource res; |
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325 | Iterator iter = this.resources.values().iterator(); |
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326 | while (iter.hasNext()) {
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327 | res = (Resource) iter.next(); |
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328 | try {
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329 | res.closeRequest(); |
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330 | if (res.openCount() > 0) { |
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331 | exception |
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332 | .add(new ResourceNotClosedOnDisposeManagerException(
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333 | res)); |
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334 | } |
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335 | iter.remove(); |
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336 | } catch (ResourceException e) {
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337 | exception.add(e); |
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338 | } |
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339 | } |
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340 | |||
341 | this.resources = null; |
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342 | this.delegateObservable.deleteObservers();
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343 | this.delegateObservable = null; |
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344 | |||
345 | if (!exception.isEmpty()) {
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346 | throw exception;
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347 | } |
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348 | } |
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349 | |||
350 | public int getTimeToBeIdle() { |
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351 | if (mlsecondsToBeIdle == 0) { |
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352 | return 0; |
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353 | } |
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354 | return (int) (mlsecondsToBeIdle / 1000); |
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355 | } |
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356 | |||
357 | public void setTimeToBeIdle(int seconds) { |
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358 | if (seconds < 0) { |
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359 | throw new IllegalArgumentException("seconds must be >= 0"); |
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360 | } |
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361 | mlsecondsToBeIdle = seconds * 1000;
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362 | } |
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363 | |||
364 | } |