| /* |
| * Copyright (c) 2007-2012, 2015, 2019 Eike Stepper (Loehne, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Simon McDuff - initial API and implementation |
| * Eike Stepper - maintenance |
| */ |
| package org.eclipse.emf.internal.cdo.analyzer; |
| |
| import org.eclipse.emf.cdo.CDOObject; |
| import org.eclipse.emf.cdo.common.id.CDOID; |
| import org.eclipse.emf.cdo.common.util.CDOFetchRule; |
| |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.EReference; |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * @author Simon McDuff |
| */ |
| public class CDOFeatureAnalyzerUI extends CDOAbstractFeatureRuleAnalyzer |
| { |
| private static final long ELAPSE_TIME = 400L; |
| |
| private Map<CDOClusterOfFetchRule, CDOClusterOfFetchRule> featureRules = new HashMap<>(); |
| |
| private CDOClusterOfFetchRule currentClusterOfFetchRule; |
| |
| private long maxTimeBetweenOperation; |
| |
| public CDOFeatureAnalyzerUI() |
| { |
| this(ELAPSE_TIME); |
| } |
| |
| public CDOFeatureAnalyzerUI(long maxTimeBetweenOperation) |
| { |
| this.maxTimeBetweenOperation = maxTimeBetweenOperation; |
| } |
| |
| @Override |
| public CDOID getContext() |
| { |
| if (lastTraverseFeature.isMany()) |
| { |
| return CDOID.NULL; |
| } |
| |
| return lastTraverseCDOObject.cdoID(); |
| } |
| |
| public synchronized CDOClusterOfFetchRule getFeatureRule(EClass eClass, EStructuralFeature feature) |
| { |
| CDOClusterOfFetchRule search = new CDOClusterOfFetchRule(eClass, feature); |
| CDOClusterOfFetchRule featureRule = featureRules.get(search); |
| if (featureRule == null) |
| { |
| featureRule = search; |
| featureRules.put(search, featureRule); |
| } |
| |
| return featureRule; |
| } |
| |
| @Override |
| public List<CDOFetchRule> getFetchRules(Collection<CDOID> ids) |
| { |
| List<CDOFetchRule> list = new ArrayList<>(); |
| |
| boolean addRootFeature = true; |
| if (lastTraverseFeature != null) |
| { |
| fetchData(); |
| |
| if (lastTraverseFeature.isMany()) |
| { |
| addRootFeature = false; |
| } |
| |
| CDOClusterOfFetchRule search = new CDOClusterOfFetchRule(lastTraverseCDOObject.eClass(), lastTraverseFeature); |
| CDOClusterOfFetchRule fetchOfRule = featureRules.get(search); |
| if (fetchOfRule == null) |
| { |
| return null; |
| } |
| |
| Collection<CDOFetchRule> fetchRules = fetchOfRule.getFeatureInfo().getRules(null, null); |
| |
| for (CDOFetchRule fetchRule : fetchRules) |
| { |
| if (addRootFeature == true || lastTraverseCDOObject.eClass() != fetchRule.getEClass()) |
| { |
| list.add(fetchRule); |
| } |
| } |
| } |
| |
| return list; |
| } |
| |
| @Override |
| protected void doPreTraverseFeature(CDOObject cdoObject, EStructuralFeature feature, int index) |
| { |
| // Don`t handle containment relationship |
| // TODO Simon: Do you really mean containment here? The check is different... |
| // TODO Clarify feature maps |
| if (feature instanceof EReference) |
| { |
| if (lastElapseTimeBetweenOperations > maxTimeBetweenOperation || currentClusterOfFetchRule == null) |
| { |
| // The user interacted with the UI. Restart a new ClusterOfFetchRule |
| currentClusterOfFetchRule = getFeatureRule(cdoObject.eClass(), feature); |
| } |
| } |
| } |
| |
| @Override |
| protected void doPostTraverseFeature(CDOObject cdoObject, EStructuralFeature feature, int index, Object object) |
| { |
| if (didFetch()) |
| { |
| currentClusterOfFetchRule.getFeatureInfo().activate(cdoObject.eClass(), feature); |
| } |
| } |
| } |