author | timkelly |
Thu, 14 May 2009 14:59:10 -0500 | |
changeset 154 | f53d85453ee8 |
parent 140 | 697b7727d088 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* |
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*/ |
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package com.nokia.carbide.internal.cpp.epoc.engine.model; |
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import com.nokia.carbide.cpp.epoc.engine.DocumentFactory; |
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import com.nokia.carbide.cpp.epoc.engine.EpocEnginePlugin; |
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import com.nokia.carbide.cpp.epoc.engine.model.IModel; |
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import com.nokia.carbide.cpp.epoc.engine.model.IModelFactory; |
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import com.nokia.carbide.cpp.epoc.engine.model.IModelProvider; |
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import com.nokia.carbide.cpp.epoc.engine.model.IOwnedModel; |
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import com.nokia.cpp.internal.api.utils.core.*; |
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import org.eclipse.core.runtime.CoreException; |
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import org.eclipse.core.runtime.IPath; |
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import org.eclipse.jface.text.IDocument; |
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import java.util.Collection; |
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import java.util.HashMap; |
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import java.util.HashSet; |
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import java.util.Iterator; |
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import java.util.Map; |
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import java.util.Set; |
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/** |
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* Base implementation of a model provider. Real implementations |
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* need to provide a mechanism for retrieving and saving file contents. |
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* |
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*/ |
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public abstract class ModelProviderBase implements IModelProvider { |
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// not static or final so it can change during test |
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private boolean DUMP = false; |
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private static int gProviderCounter; |
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private int providerId; |
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private static final long RELEASE_DELAY = 5 * 1000; |
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private boolean cacheModels; |
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// this acts as the lock on all the state managed by this object |
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private Object modelLock = new Object(); |
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private Map<IPath, IOwnedModel> models; |
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//private Map<IPath, IModelListener> modelListeners; |
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private Map<IPath, Integer> modelUseCount; |
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private Map<IPath, Long> releasedModelTimes; |
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private Map<IPath, IOwnedModel> releasedModels; |
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private Map<IPath, Set<IOwnedModel>> modelFileReferences; |
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protected IModelFactory modelFactory; |
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private long lastFlushTime; |
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public ModelProviderBase(IModelFactory modelFactory) { |
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providerId = ++gProviderCounter; |
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Check.checkArg(modelFactory); |
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this.cacheModels = true; |
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this.modelFactory = modelFactory; |
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this.modelUseCount = new HashMap<IPath, Integer>(); |
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this.models = new HashMap<IPath, IOwnedModel>(); |
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//this.modelListeners = new HashMap<IPath, IModelListener>(); |
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this.releasedModelTimes = new HashMap<IPath, Long>(); |
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this.releasedModels = new HashMap<IPath, IOwnedModel>(); |
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this.modelFileReferences = new HashMap<IPath, Set<IOwnedModel>>(); |
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} |
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/** |
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* Get the canonical form of the path -- a full filesystem path. |
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*/ |
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protected abstract IPath getFullPath(IPath path); |
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/** |
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* Load the text from the given full path, or return null |
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* for a nonexistent file. |
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* @param fullPath full path to resource |
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* @return contents of file |
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* @throws CoreException if the file could not be read, |
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* for reasons other than not existing. |
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*/ |
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protected abstract String loadStorage(IPath fullPath) throws CoreException; |
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/** |
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* Save the text to the given full path, creating it and its parents if |
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* necessary. The implementation may ignore a save if the text does not differ. |
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* @param path full path to resource |
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* @param text the text |
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*/ |
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protected abstract void saveStorage(IPath fullPath, String text) throws CoreException; |
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/** |
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* Enable tracking for the storage underlying a registered model's contents. |
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* This may be called multiple times for an already-registered path. |
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* <p> |
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* If changes are detected, {@link #fireStorageChanged()} should be called. |
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* <p> |
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* A call to {@link #stopTrackingStorage(IPath)} is made around approved |
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* saves of documents, so implementors don't have to handle that. |
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*/ |
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protected abstract void startTrackingStorage(IPath fullPath); |
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/** |
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* Disable tracking for the storage underlying a registered model's contents. |
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*/ |
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protected abstract void stopTrackingStorage(IPath fullPath); |
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/** |
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* Called by implementors to notify that the storage at the given |
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* path has changed. This is called by the implementation |
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* when changes to tracked storage can be detected with listeners. |
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* @param path |
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* @see #startTrackingStorage(IPath) |
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* @see #stopTrackingStorage(IPath) |
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*/ |
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protected void fireStorageChanged(IPath fullPath) { |
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IOwnedModel model = lookupSharedModel(fullPath); |
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if (model != null) { |
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// the model document itself was modified |
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refreshModel(fullPath, model); |
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} else { |
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// see if a header for one of the models was modified |
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Collection<IOwnedModel> referencingModels = modelFileReferences.get(fullPath); |
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if (referencingModels != null) { |
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for (IOwnedModel refModel : referencingModels) { |
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refreshModel(refModel.getPath(), refModel); |
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139 |
} |
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140 |
} |
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141 |
} |
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142 |
} |
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143 |
|
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/** |
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* Check the model's file for changes. This acts as a polling solution for cases |
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* where changes to tracked storage cannot be implemented with listeners. |
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147 |
* <p> |
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* The implementation need only store modification information when files are |
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* loaded and saved and double-check that information here. This may return false |
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* if the implementation reports changes with {@link #fireStorageChanged(IPath)}. |
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151 |
* <p> |
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* The implementation must not call {@link #fireStorageChanged(IPath)}. |
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* @see #startTrackingStorage(IPath) |
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* @see #stopTrackingStorage(IPath) |
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155 |
*/ |
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protected abstract boolean hasTrackedStorageChanged(IPath fullPath); |
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157 |
|
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public void updateModelDocumentMappings(IOwnedModel model) { |
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startTrackingModelStorage(model); |
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} |
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161 |
|
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162 |
/** |
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* Start tracking storage for all the documents owned by the model. |
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* @param model |
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*/ |
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private void startTrackingModelStorage(IOwnedModel model) { |
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Map<IPath, IDocument> documentMap = model.getDocumentMap(); |
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for (IPath path : documentMap.keySet()) { |
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Set<IOwnedModel> models = modelFileReferences.get(path); |
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if (models == null) { |
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models = new HashSet<IOwnedModel>(); |
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modelFileReferences.put(path, models); |
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} |
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models.add(model); |
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startTrackingStorage(path); |
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} |
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} |
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178 |
|
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179 |
/** |
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* Start tracking storage for all the documents owned by the model. |
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181 |
* @param model |
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182 |
*/ |
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private void stopTrackingModelStorage(IOwnedModel model) { |
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Map<IPath, IDocument> documentMap = model.getDocumentMap(); |
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for (IPath path : documentMap.keySet()) { |
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Set<IOwnedModel> models = modelFileReferences.get(path); |
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if (models != null) { |
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models.remove(model); |
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189 |
if (models.isEmpty()) { |
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modelFileReferences.remove(path); |
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191 |
} |
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} |
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stopTrackingStorage(path); |
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194 |
} |
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195 |
} |
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196 |
|
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197 |
/** |
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198 |
* Refresh the model's contents from storage, if changed. |
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199 |
* @param fullPath |
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200 |
* @param model |
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201 |
*/ |
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202 |
private void refreshModel(IPath fullPath, IOwnedModel model) { |
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203 |
try { |
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204 |
// get updated file |
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205 |
String text = loadStorage(fullPath); |
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206 |
|
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207 |
// make model reload with new contents |
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208 |
String currentText = model.getDocument().get(); |
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209 |
if (currentText == null || !currentText.equals(text)) { |
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model.getDocument().set(text != null ? text : ""); //$NON-NLS-1$ |
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211 |
|
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212 |
// the change to the document should trigger a reparse |
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213 |
// and invalidation of any open views |
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214 |
} |
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215 |
|
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216 |
} catch (CoreException e) { |
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217 |
EpocEnginePlugin.log(e); |
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218 |
} |
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219 |
} |
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220 |
|
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221 |
/* (non-Javadoc) |
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* @see com.nokia.carbide.cpp.epoc.engine.model.IModelProvider#createModel(org.eclipse.core.runtime.IPath) |
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223 |
*/ |
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public IOwnedModel createModel(IPath somePath) { |
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IPath fullPath = getFullPath(somePath); |
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226 |
return modelFactory.createModel(fullPath, null); |
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227 |
} |
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228 |
|
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229 |
/* (non-Javadoc) |
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230 |
* @see com.nokia.carbide.cpp.epoc.engine.model.IModelProvider#load(com.nokia.carbide.cpp.epoc.engine.model.mmp.IMMPOwnedModel) |
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231 |
*/ |
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public void load(IOwnedModel model) throws CoreException { |
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233 |
String text = loadStorage(model.getPath()); |
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234 |
IDocument document = model.getDocument() != null ? model.getDocument() : DocumentFactory.createDocument(); |
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235 |
if (text != null) |
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236 |
document.set(text); |
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237 |
if (document != model.getDocument()) { |
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238 |
model.setDocument(document); |
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239 |
} |
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240 |
} |
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241 |
|
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242 |
/* (non-Javadoc) |
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243 |
* @see com.nokia.carbide.cpp.epoc.engine.model.IModelProvider#save(com.nokia.carbide.cpp.epoc.engine.model.mmp.IMMPOwnedModel) |
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244 |
*/ |
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245 |
public void save(IOwnedModel model) throws CoreException { |
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246 |
save(model, model.getDocumentMap()); |
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247 |
} |
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248 |
|
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249 |
/* (non-Javadoc) |
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250 |
* @see com.nokia.carbide.cpp.epoc.engine.model.IModelProvider#save(com.nokia.carbide.cpp.epoc.engine.model.mmp.IMMPOwnedModel) |
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251 |
*/ |
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252 |
public void save(IOwnedModel model, Map documentMap_) throws CoreException { |
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253 |
Map<IPath, IDocument> documentMap = documentMap_; |
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254 |
|
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255 |
IPath path = model.getPath(); |
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256 |
|
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257 |
if (models.containsKey(path)) { |
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258 |
stopTrackingModelStorage(model); |
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259 |
} |
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260 |
|
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261 |
// check for changed documents and save modified files only |
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262 |
for (Map.Entry<IPath, IDocument> entry : documentMap.entrySet()) { |
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263 |
saveStorage(entry.getKey(), entry.getValue().get()); |
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264 |
} |
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265 |
|
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266 |
if (models.containsKey(path)) { |
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267 |
startTrackingModelStorage(model); |
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268 |
} |
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269 |
} |
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270 |
|
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271 |
/** |
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* Register a model whose document has been established. |
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* Called with modelLock held. |
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* @param model |
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* @throws CoreException |
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276 |
*/ |
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private void doRegisterModel(IOwnedModel model) throws CoreException { |
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IPath path = model.getPath(); |
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279 |
Check.checkArg(!models.containsKey(path)); |
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if (DUMP) System.out.println(providerId+") " + "Registering "+ path); //$NON-NLS-1$ //$NON-NLS-2$ |
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281 |
if (releasedModels.containsKey(path)) { |
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if (DUMP) System.out.println("--> registering released model"); //$NON-NLS-1$ |
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283 |
releasedModels.remove(path); |
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284 |
releasedModelTimes.remove(path); |
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} |
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models.put(path, model); |
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287 |
model.setModelProvider(this); |
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288 |
|
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/* |
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IModelListener modelListener = new IModelListener() { |
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291 |
|
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public void modelChanged(IOwnedModel model) { |
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293 |
} |
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294 |
|
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public void modelUpdated(IOwnedModel model, IView view) { |
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try { |
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297 |
save(model); |
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298 |
} catch (CoreException e) { |
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EpocEnginePlugin.log(e); |
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300 |
} |
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301 |
} |
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302 |
}; |
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303 |
|
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304 |
model.addListener(modelListener); |
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305 |
modelListeners.put(path, modelListener); |
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306 |
*/ |
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|
307 |
|
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308 |
// owner holds one reference |
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|
309 |
modelUseCount.put(path, new Integer(1)); |
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|
310 |
|
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311 |
// ensure the model is fully set up |
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312 |
model.parse(); |
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313 |
startTrackingModelStorage(model); |
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|
314 |
} |
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|
315 |
|
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316 |
/* (non-Javadoc) |
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* @see com.nokia.carbide.cpp.epoc.engine.model.IModelProvider#registerModel(SharedModel) |
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318 |
*/ |
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319 |
public void registerModel(IOwnedModel model) throws CoreException { |
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320 |
synchronized (modelLock) { |
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321 |
if (model.getDocument() != null) { |
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|
322 |
// create from initial contents |
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|
323 |
save(model); |
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|
324 |
} else { |
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325 |
// try to load, or make empty if not existing |
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|
326 |
load(model); |
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|
327 |
} |
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|
328 |
|
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|
329 |
doRegisterModel(model); |
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|
330 |
} |
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|
331 |
} |
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|
332 |
|
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|
333 |
/* (non-Javadoc) |
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334 |
* @see com.nokia.carbide.cpp.epoc.engine.model.IModelProvider#unregisterModel(SharedModel) |
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335 |
*/ |
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|
336 |
public void unregisterModel(IOwnedModel model) { |
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|
337 |
IPath path = model.getPath(); |
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|
338 |
synchronized (modelLock) { |
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|
339 |
if (DUMP) System.out.println(providerId+") " + "Unregistering " + path); //$NON-NLS-1$ //$NON-NLS-2$ |
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|
340 |
Check.checkArg(models.containsKey(path) || releasedModels.containsKey(path)); |
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|
341 |
//model.removeListener(modelListeners.get(path)); |
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|
342 |
//modelListeners.remove(path); |
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|
343 |
models.remove(path); |
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|
344 |
releasedModels.remove(path); |
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|
345 |
releasedModelTimes.remove(path); |
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|
346 |
model.setModelProvider(null); |
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|
347 |
} |
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|
348 |
stopTrackingModelStorage(model); |
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|
349 |
} |
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|
350 |
|
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|
351 |
private IOwnedModel lookupSharedModel(IPath fullPath) { |
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|
352 |
IOwnedModel model; |
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|
353 |
if (DUMP) System.out.println(providerId+") " + "Finding shared model " + fullPath); //$NON-NLS-1$ //$NON-NLS-2$ |
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|
354 |
// try to resurrect released model |
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|
355 |
model = releasedModels.get(fullPath); |
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|
356 |
if (model != null) { |
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|
357 |
if (DUMP) System.out.println("--> resurrecting"); //$NON-NLS-1$ |
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|
358 |
models.put(fullPath, model); |
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|
359 |
releasedModels.remove(fullPath); |
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|
360 |
releasedModelTimes.remove(fullPath); |
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|
361 |
} else { |
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|
362 |
if (DUMP) System.out.println("--> looking up"); //$NON-NLS-1$ |
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|
363 |
model = models.get(fullPath); |
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|
364 |
} |
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|
365 |
if (model != null) { |
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|
366 |
incrementUseCount(fullPath); |
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|
367 |
if (DUMP) System.out.println("--> found, refcount = " + testGetUseCount(model)); //$NON-NLS-1$ |
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|
368 |
} |
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|
369 |
return model; |
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|
370 |
} |
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|
371 |
|
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|
372 |
public IModel findSharedModel(IPath somePath) { |
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|
373 |
if (somePath == null) { |
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|
374 |
return null; |
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|
375 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
376 |
IPath fullPath = getFullPath(somePath); |
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parents:
diff
changeset
|
377 |
synchronized (modelLock) { |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
378 |
IOwnedModel model = lookupSharedModel(fullPath); |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
379 |
if (model != null && hasTrackedStorageChanged(fullPath)) { |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
380 |
refreshModel(fullPath, model); |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
381 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
382 |
return model; |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
383 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
384 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
385 |
|
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
386 |
/* (non-Javadoc) |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
387 |
* @see com.nokia.carbide.cpp.epoc.engine.model.IModelProvider#getSharedModel(org.eclipse.core.runtime.IPath, com.nokia.carbide.cpp.epoc.engine.model.IModelConfiguration) |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
388 |
*/ |
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parents:
diff
changeset
|
389 |
public IModel getSharedModel(IPath somePath) throws CoreException { |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
390 |
if (somePath == null) { |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
391 |
throw new CoreException(Logging.newStatus(EpocEnginePlugin.getDefault(), |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
392 |
new NullPointerException("Model path is null... perhaps outside workspace?"))); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
393 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
394 |
IPath fullPath = getFullPath(somePath); |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
395 |
IOwnedModel model; |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
396 |
synchronized (modelLock) { |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
397 |
if (DUMP) System.out.println(providerId+") " + "Get shared " + fullPath); //$NON-NLS-1$ //$NON-NLS-2$ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
398 |
model = releasedModels.get(fullPath); |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
399 |
if (model != null) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
400 |
if (DUMP) System.out.println("--> resurrect"); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
401 |
Check.checkState(modelUseCount.get(fullPath).equals(0)); |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
402 |
models.put(fullPath, model); |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
403 |
releasedModels.remove(fullPath); |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
404 |
releasedModelTimes.remove(fullPath); |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
405 |
} else { |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
406 |
if (DUMP) System.out.println("--> lookup"); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
407 |
model = models.get(fullPath); |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
408 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
409 |
if (model == null) { |
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DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
410 |
if (DUMP) System.out.println("--> load"); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
411 |
|
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
412 |
// try to load |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
413 |
String text = loadStorage(fullPath); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
414 |
if (text == null) |
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DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
415 |
return null; |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
416 |
|
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
417 |
if (DUMP) System.out.print("--> loading model " + fullPath + "... "); //$NON-NLS-1$ //$NON-NLS-2$ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
418 |
|
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
419 |
model = modelFactory.createModel(fullPath, DocumentFactory.createDocument(text)); |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
420 |
doRegisterModel(model); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
421 |
if (DUMP) System.out.println("loaded."); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
422 |
} else { |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
423 |
// check for changes under our nose |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
424 |
if (hasTrackedStorageChanged(fullPath)) { |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
425 |
refreshModel(fullPath, model); |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
426 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
427 |
|
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
428 |
// ensure the model is tracked now, if it wasn't before (e.g. because it was not yet in the workspace) |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
429 |
startTrackingModelStorage(model); |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
430 |
|
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
431 |
incrementUseCount(fullPath); |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
432 |
if (DUMP) System.out.println("--> incr refcount to " + testGetUseCount(model)); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
433 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
434 |
} |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
435 |
|
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
436 |
// try cleaning up (this could be called as a job too) |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
437 |
flushReleasedModels(); |
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DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
438 |
|
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
439 |
return model; |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
440 |
} |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
441 |
|
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
442 |
/** |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
443 |
* TESTING ONLY. |
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DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
444 |
* <p> |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
445 |
* @param model |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
446 |
* @return |
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DP tools release version Revision: 200912
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parents:
diff
changeset
|
447 |
*/ |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
448 |
public int testGetUseCount(IOwnedModel model) { |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
449 |
return modelUseCount.get(model.getPath()); |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
450 |
} |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
451 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
452 |
/** |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
453 |
* Increment use count for the given model.<p> |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
454 |
* Called with #modelLock held. |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
455 |
* @param modelPath |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
456 |
*/ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
457 |
private void incrementUseCount(IPath modelPath) { |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
458 |
Integer val = modelUseCount.get(modelPath); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
459 |
modelUseCount.put(modelPath, new Integer(val.intValue() + 1)); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
460 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
461 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
462 |
/** |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
463 |
* Decrement use count for the given model.<p> |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
464 |
* Called with #modelLock held. |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
465 |
* @param modelPath |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
466 |
*/ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
467 |
private int decrementUseCount(IPath modelPath) { |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
468 |
Integer val = modelUseCount.get(modelPath); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
469 |
int newValue = val.intValue() - 1; |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
470 |
Check.checkState(newValue >= 0); |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
471 |
modelUseCount.put(modelPath, new Integer(newValue)); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
472 |
return newValue; |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
473 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
474 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
475 |
/* (non-Javadoc) |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
476 |
* @see com.nokia.carbide.cpp.epoc.engine.model.IModelProvider#releaseSharedModel(SharedModel) |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
477 |
*/ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
478 |
public void releaseSharedModel(IModel sharedModel) { |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
479 |
IOwnedModel model = (IOwnedModel) sharedModel; |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
480 |
IPath path = model.getPath(); |
fb279309251b
DP tools release version Revision: 200912
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parents:
diff
changeset
|
481 |
synchronized (modelLock) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
482 |
if (DUMP) System.out.println(providerId+") " + "Releasing " + path); //$NON-NLS-1$ //$NON-NLS-2$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
483 |
Check.checkState(models.containsKey(path)); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
484 |
int val = decrementUseCount(path); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
485 |
if (val == 0) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
486 |
if (sharedModel.getViews().length != 0) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
487 |
incrementUseCount(path); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
488 |
throw new IllegalStateException("Trying to release model with views: " + path); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
489 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
490 |
if (DUMP) System.out.println("--> refcount == 0"); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
491 |
models.remove(path); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
492 |
//modelListeners.remove(path); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
493 |
if (cacheModels) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
494 |
if (DUMP) System.out.println("--> released"); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
495 |
// move to released models cache |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
496 |
releasedModels.put(path, model); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
497 |
releasedModelTimes.put(path, System.currentTimeMillis()); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
498 |
} else { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
499 |
if (DUMP) System.out.println("--> disposing"); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
500 |
model.setModelProvider(null); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
501 |
model.dispose(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
502 |
modelUseCount.remove(path); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
503 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
504 |
} else { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
505 |
if (DUMP) System.out.println("--> refcount == " + val); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
506 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
507 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
508 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
509 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
510 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
511 |
/** |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
512 |
* Testing method to clear out the provider's contents. |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
513 |
*/ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
514 |
public void reset() { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
515 |
synchronized (modelLock) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
516 |
if (DUMP) System.out.println(providerId+") " + "Reset!"); //$NON-NLS-1$ //$NON-NLS-2$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
517 |
models.clear(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
518 |
//modelListeners.clear(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
519 |
modelUseCount.clear(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
520 |
releasedModelTimes.clear(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
521 |
releasedModels.clear(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
522 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
523 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
524 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
525 |
/** |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
526 |
* Actually flush a model. This is done some time after the last |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
527 |
* #release is called. |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
528 |
* <p> |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
529 |
* Called with #modelLock held. |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
530 |
* @param model |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
531 |
* @param path |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
532 |
*/ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
533 |
private void flushModel(IPath modelPath) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
534 |
if (!releasedModels.containsKey(modelPath)) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
535 |
EpocEnginePlugin.log(new IllegalArgumentException("Flushing unreleased model? " + modelPath)); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
536 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
537 |
try { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
538 |
IOwnedModel model = releasedModels.get(modelPath); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
539 |
model.setModelProvider(null); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
540 |
model.dispose(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
541 |
} catch (IllegalStateException e) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
542 |
throw e; |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
543 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
544 |
releasedModels.remove(modelPath); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
545 |
releasedModelTimes.remove(modelPath); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
546 |
modelUseCount.remove(modelPath); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
547 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
548 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
549 |
/** |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
550 |
* Occasionally scan released models and free them, |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
551 |
* using a delay to avoid overhead of rescanning popular models. |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
552 |
*/ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
553 |
private void flushReleasedModels() { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
554 |
long now = System.currentTimeMillis(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
555 |
if (lastFlushTime + RELEASE_DELAY > now) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
556 |
return; |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
557 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
558 |
synchronized (modelLock) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
559 |
if (DUMP) System.out.println(providerId+") " + "Flush models... "); //$NON-NLS-1$ //$NON-NLS-2$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
560 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
561 |
// work on copy so #flushModel can fix up everything |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
562 |
// (else we fix up the time map here, which is not symmetric) |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
563 |
Map<IPath, Long> timeMap = new HashMap<IPath, Long>(releasedModelTimes); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
564 |
for (Iterator<Map.Entry<IPath, Long>> iter = timeMap.entrySet().iterator(); iter.hasNext(); ) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
565 |
Map.Entry<IPath, Long> entry = iter.next(); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
566 |
if (entry.getValue() + RELEASE_DELAY < now) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
567 |
if (DUMP) System.out.println("Flushing model " + entry.getKey()); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
568 |
flushModel(entry.getKey()); |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
569 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
570 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
571 |
if (DUMP) System.out.println("flushed."); //$NON-NLS-1$ |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
572 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
573 |
lastFlushTime = now; |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
574 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
575 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
576 |
public void cacheModels(boolean flag) { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
577 |
this.cacheModels = flag; |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
578 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
579 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
580 |
public boolean isCachingModels() { |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
581 |
return cacheModels; |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
582 |
} |
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
583 |
|
fb279309251b
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
584 |
} |