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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.schema;
import org.eclipse.emf.cdo.common.branch.CDOBranch;
import org.eclipse.emf.cdo.spi.common.branch.InternalCDOBranchManager.BranchLoader;
import org.eclipse.emf.cdo.spi.common.branch.InternalCDOBranchManager.BranchLoader.BranchInfo;
import org.eclipse.net4j.util.collection.Pair;
import com.objy.db.app.ooId;
import com.objy.db.app.ooObj;
import com.objy.db.util.ooTreeSetX;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* @author Ibrahim Sallam
*/
public class ObjyBranchManager extends ooObj
{
protected int nextBranchId;
protected int nextLocalBranchId;
protected ooTreeSetX branchSet;
private ObjyBranchManager()
{
nextBranchId = 0;
nextLocalBranchId = 0;
}
protected void createTreeSet(ooObj clusterObject)
{
branchSet = new ooTreeSetX();
clusterObject.cluster(branchSet);
}
public int getLastBranchId()
{
fetch();
return nextBranchId;
}
public int nextBranchId()
{
markModified();
return ++nextBranchId;
}
public int getlastLocalBranchId()
{
fetch();
return nextLocalBranchId;
}
public int nextLocalBranchId()
{
markModified();
return --nextLocalBranchId;
}
public Pair<Integer, Long> createBranch(int branchId, BranchInfo branchInfo)
{
markModified();
if (branchId == BranchLoader.NEW_BRANCH)
{
branchId = nextBranchId();
}
else if (branchId == BranchLoader.NEW_LOCAL_BRANCH)
{
branchId = nextLocalBranchId();
}
ObjyBranch newObjyBranch = ObjyBranch.create(this, branchId, branchInfo);
// if the baseBranchId is 0, then we just added to our branchSet, otherwise
// we'll lookup the ObjyBranch with the id, and add the newly created
// ObjyBranch to it's sub-branches set.
// int baseBranchId = branchInfo.getBaseBranchID();
// Initially I thought we could make a tree of branches, but for the
// first implementation we can just create a TreeSet of all branches,
// then resolve sub-branches dynamically by checking baseBranchId.
branchSet.add(newObjyBranch); // implicit clustering.
// if (baseBranchId == 0) // main branch.
// {
// branchSet.add(newObjyBranch); // implicit clustering.
// }
// else
// {
// Iterator<ObjyBranch> treeItr = branchSet.iterator();
// ObjyBranch objyBranch = null;
// boolean found = false;
// while (treeItr.hasNext() && !found)
// {
// objyBranch = treeItr.next();
// if (baseBranchId == objyBranch.getBaseBranchId())
// {
// found = true;
// continue;
// }
// objyBranch = null;
// }
//
// objyBranch.addSubBranch(newObjyBranch);
// }
return new Pair<Integer, Long>(branchId, branchInfo.getBaseTimeStamp());
}
public ObjyBranch getBranch(int branchId)
{
fetch();
@SuppressWarnings("unchecked")
Iterator<ObjyBranch> treeItr = branchSet.iterator();
ObjyBranch objyBranch = null;
while (treeItr.hasNext())
{
ObjyBranch tempObjyBranch = treeItr.next();
if (branchId == tempObjyBranch.getBranchId())
{
objyBranch = tempObjyBranch;
break;
}
}
return objyBranch;
}
public static ObjyBranchManager create(ooId scopeContOid)
{
ObjyBranchManager branchManager = new ObjyBranchManager();
ooObj clusterObject = ooObj.create_ooObj(scopeContOid);
clusterObject.cluster(branchManager);
branchManager.createTreeSet(branchManager);
branchManager.createMainBranch();
return branchManager;
}
public void createMainBranch()
{
ObjyBranch newObjyBranch = ObjyBranch.create(this, CDOBranch.MAIN_BRANCH_ID, CDOBranch.MAIN_BRANCH_ID,
CDOBranch.MAIN_BRANCH_NAME, 0);
branchSet.add(newObjyBranch); // implicit clustering.
}
public boolean deleteBranch(int branchId)
{
boolean done = false;
markModified();
@SuppressWarnings("unchecked")
Iterator<ObjyBranch> treeItr = branchSet.iterator();
ObjyBranch objyBranch = null;
while (treeItr.hasNext())
{
objyBranch = treeItr.next();
if (branchId == objyBranch.getBranchId())
{
done = branchSet.remove(objyBranch);
break;
}
}
return done;
}
public List<ObjyBranch> getSubBranches(int baseBranchId)
{
fetch();
List<ObjyBranch> objyBranchList = new ArrayList<ObjyBranch>();
Iterator<?> treeItr = branchSet.iterator();
ObjyBranch objyBranch = null;
while (treeItr.hasNext())
{
objyBranch = (ObjyBranch)treeItr.next();
if (objyBranch.getBranchId() == objyBranch.getBaseBranchId())
{
continue;
}
if (objyBranch.getBaseBranchId() == baseBranchId)
{
objyBranchList.add(objyBranch);
}
}
return objyBranchList;
}
public List<ObjyBranch> getBranches(int startId, int endId)
{
fetch();
List<ObjyBranch> objyBranchList = new ArrayList<ObjyBranch>();
int lastId = endId != 0 ? endId : Integer.MAX_VALUE;
@SuppressWarnings("unchecked")
Iterator<ObjyBranch> treeItr = branchSet.iterator();
ObjyBranch objyBranch = null;
while (treeItr.hasNext())
{
objyBranch = treeItr.next();
int id = objyBranch.getBranchId();
if (id >= startId && id <= lastId)
{
objyBranchList.add(objyBranch);
}
}
return objyBranchList;
}
}
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