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/*
* Copyright (c) 2004 - 2012 Eike Stepper (Berlin, 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.session.CDOCollectionLoadingPolicy;
import org.eclipse.emf.cdo.view.CDOFeatureAnalyzer;
import org.eclipse.emf.cdo.view.CDOFetchRuleManager;
import org.eclipse.emf.internal.cdo.bundle.OM;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.emf.ecore.EStructuralFeature;
/**
* @author Simon McDuff
*/
public abstract class CDOAbstractFeatureRuleAnalyzer implements CDOFeatureAnalyzer, CDOFetchRuleManager
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, CDOAbstractFeatureRuleAnalyzer.class);
protected EStructuralFeature lastTraverseFeature;
protected int lastTraverseIndex;
protected long lastAccessTime;
protected long lastElapseTimeBetweenOperations;
protected CDOObject lastTraverseCDOObject;
protected long lastLatencyTime;
protected CDOCollectionLoadingPolicy loadCollectionPolicy;
private boolean didFetch;
private int fetchCount;
public CDOAbstractFeatureRuleAnalyzer()
{
}
public int getFetchCount()
{
return fetchCount;
}
public CDOCollectionLoadingPolicy getCollectionLoadingPolicy()
{
return loadCollectionPolicy;
}
public void preTraverseFeature(CDOObject cdoObject, EStructuralFeature feature, int index)
{
if (TRACER.isEnabled())
{
TRACER.format("preTraverseFeature : {0}.{1}", cdoObject.eClass(), feature.getName()); //$NON-NLS-1$
}
loadCollectionPolicy = cdoObject.cdoView().getSession().options().getCollectionLoadingPolicy();
lastTraverseFeature = feature;
lastTraverseCDOObject = cdoObject;
lastTraverseIndex = index;
lastElapseTimeBetweenOperations = System.currentTimeMillis() - lastAccessTime;
lastAccessTime = System.currentTimeMillis();
didFetch = false;
CDOFetchRuleManagerThreadLocal.join(this);
doPreTraverseFeature(cdoObject, feature, index);
}
public void postTraverseFeature(CDOObject cdoObject, EStructuralFeature feature, int index, Object value)
{
if (TRACER.isEnabled())
{
TRACER.format("postTraverseFeature : {0}.{1}", cdoObject.eClass(), feature.getName()); //$NON-NLS-1$
}
try
{
doPostTraverseFeature(cdoObject, feature, index, value);
}
finally
{
CDOFetchRuleManagerThreadLocal.leave();
lastAccessTime = System.currentTimeMillis();
}
}
protected void doPreTraverseFeature(CDOObject cdoObject, EStructuralFeature feature, int index)
{
}
protected void doPostTraverseFeature(CDOObject cdoObject, EStructuralFeature feature, int index, Object value)
{
}
protected void fetchData()
{
didFetch = true;
fetchCount++;
}
protected boolean didFetch()
{
return didFetch;
}
}
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