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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:
* Ibrahim Sallam - initial API and implementation
*/
package org.eclipse.emf.cdo.server.internal.objectivity.clustering;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.id.CDOIDTemp;
import org.eclipse.emf.cdo.eresource.EresourcePackage;
import org.eclipse.emf.cdo.server.internal.objectivity.ObjectivityStore;
import org.eclipse.emf.cdo.server.internal.objectivity.bundle.OM;
import org.eclipse.emf.cdo.server.internal.objectivity.db.ObjyObject;
import org.eclipse.emf.cdo.server.internal.objectivity.db.ObjyScope;
import org.eclipse.emf.cdo.server.internal.objectivity.db.ObjySession;
import org.eclipse.emf.cdo.server.internal.objectivity.utils.OBJYCDOIDUtil;
import org.eclipse.emf.cdo.spi.common.id.AbstractCDOIDLong;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision;
import org.eclipse.emf.cdo.spi.server.InternalCommitContext;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.emf.ecore.EClass;
import com.objy.db.app.ooId;
import java.util.HashMap;
import java.util.Map;
/***
* This class will attempt to cluster objects with their container, or with a resource. It should be able to use the
* global clustering which will use model elements to locate where an object will end up.
*
* @author Ibrahim Sallam
*/
public class ObjyPlacementManagerLocal
{
private static final ContextTracer TRACER_DEBUG = new ContextTracer(OM.DEBUG, ObjyPlacementManagerLocal.class);
// private static final ContextTracer TRACER_ERROR = new ContextTracer(OM.ERROR, ObjyPlacementManagerLocal.class);
// private static final ContextTracer TRACER_INFO = new ContextTracer(OM.INFO, ObjyPlacementManagerLocal.class);
private String repositoryName = null;
ObjySession objySession = null;
InternalCommitContext commitContext = null;
Map<CDOID, InternalCDORevision> newObjectsMap;
Map<CDOID, CDOID> idMapper;
Map<CDOID, ObjyObject> newObjyObjectsMap;
public ObjyPlacementManagerLocal(ObjectivityStore objyStore, ObjySession objySession,
InternalCommitContext commitContext, Map<CDOID, ObjyObject> newObjyObjectsMap)
{
repositoryName = objyStore.getRepository().getName();
this.objySession = objySession;
this.commitContext = commitContext;
// first put them in a map for easy lookup and processing....
newObjectsMap = new HashMap<CDOID, InternalCDORevision>();
for (InternalCDORevision revision : commitContext.getNewObjects())
{
newObjectsMap.put(revision.getID(), revision);
}
idMapper = new HashMap<CDOID, CDOID>();
this.newObjyObjectsMap = newObjyObjectsMap;
}
public void processRevision(InternalCDORevision revision)
{
// the revision could've been processed in case if it's a container
// object and we reached it while processing another revision.
if (isIdProcessed(revision.getID()))
{
return;
}
// create the object and add it to mapping, this will recursively call
// other object creation as needed, based on the default clustering of
// having each object is stored with its container.
try
{
createObjectAndAddToMapping(revision);
}
catch (com.objy.db.ObjyRuntimeException ex)
{
ex.printStackTrace();
}
}
private ObjyObject createObjectAndAddToMapping(InternalCDORevision revision)
{
ObjyObject objyObject = createObject(revision);
CDOID newID = OBJYCDOIDUtil.getCDOID(objyObject.ooId());
// nearObject = objyObject.ooId();
if (TRACER_DEBUG.isEnabled())
{
TRACER_DEBUG.trace("Adding object to mapping from " + revision.getID() + " to " + newID);
}
commitContext.addIDMapping(revision.getID(), newID);
// keep a track of this mapping.
idMapper.put(revision.getID(), newID);
newObjyObjectsMap.put(newID, objyObject);
return objyObject;
}
protected boolean isIdProcessed(CDOID id)
{
// if the ID in the idMapper, then we did process the revision alreay
return idMapper.get(id) != null;
}
protected ObjyObject createObject(InternalCDORevision revision)
{
long startTime = System.nanoTime();
ooId nearObject = null;
EClass eClass = revision.getEClass();
if (TRACER_DEBUG.isEnabled())
{
TRACER_DEBUG.trace("Creating new object for revision: " + revision + " - eClass: " + eClass);
}
if (revision.isResourceNode())
{
String resourceName = (String)revision.data().get(EresourcePackage.eINSTANCE.getCDOResourceNode_Name(), 0);
// The resourcelist is in the ConfigDB, but each resource is in a resource
// container in the repo database, except the first root (ID == resourceID).
// if (revision.getID() == revision.getResourceID()) // Check with Eike!
if (resourceName == null) // root.
{
nearObject = objySession.getResourceList(repositoryName).ooId();
}
else
{
ObjyScope objyScope = new ObjyScope(repositoryName, resourceName /* ObjyDb.RESOURCELIST_CONT_NAME */);
nearObject = objyScope.getScopeContOid();
}
}
else
{
nearObject = getNearObject(revision);
}
if (nearObject == null)
{
// we have to put it somewhere.
// call the global placement manager.
nearObject = objySession.getObjectManager().getGlobalPlacementManager()
.getNearObject(null, null, revision.getEClass());
}
ObjyObject objyObject = objySession.getObjectManager().newObject(eClass, nearObject);
// // if it's a resource, collect it.
// if (revision.isResourceNode())
// {
// // Add resource to the list
// ObjyResourceList resourceList = objySession.getResourceList();
//
// // before we update the data into the object we need to check
// // if it's a resource and we're trying to add a duplicate.
// // TODO - do we need to check for Folder and resouce, or is the isResourceNode()
// // check is enough?!!!
// if (revision.isResourceFolder() || revision.isResource())
// {
// // this call will throw exception if we have a duplicate resource we trying to add.
// resourceList.checkDuplicateResources(revision);
// }
// SmartLock.lock(objyObject);
// resourceList.add(objyObject);
// }
ObjyObject.createObjectTime += System.nanoTime() - startTime;
ObjyObject.createObjectCount++;
return objyObject;
}
/***
* This function might be called recursively throw the call to createAndAddToMapping() to create all the container
* objects and or resources needed to cluster the rest of the new objects...
*/
protected ooId getNearObject(InternalCDORevision revision)
{
ooId nearObject = null;
// find the new object which is either a container or a resource.
Object id = revision.getContainerID();
if (id instanceof CDOID && (CDOID)id != CDOID.NULL)
{
nearObject = getOidFromCDOID((CDOID)id);
}
else
{
// use the resource...
CDOID resourceId = revision.getResourceID();
nearObject = getOidFromCDOID(resourceId);
}
return nearObject;
}
protected ooId getOidFromCDOID(CDOID id)
{
ooId oid = null;
// if (OBJYCDOIDUtil.isValidObjyId(id))
// oid = OBJYCDOIDUtil.getooId(id);
if (id instanceof AbstractCDOIDLong)
{
oid = OBJYCDOIDUtil.getooId(id);
}
else if (id instanceof CDOIDTemp)
{
// see if we've seen it before
CDOID nearId = idMapper.get(id);
if (nearId != null)
{
oid = OBJYCDOIDUtil.getooId(nearId);
}
else
{
// create that object since it wasn't created and mapped yet.
InternalCDORevision containerRevision = newObjectsMap.get(id);
if (containerRevision != null)
{
oid = createObjectAndAddToMapping(containerRevision).ooId();
}
}
}
return oid;
}
}
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