| /* |
| * Copyright (c) 2011, 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: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.emf.cdo.server.internal.mongodb; |
| |
| import org.eclipse.emf.cdo.common.id.CDOID; |
| import org.eclipse.emf.cdo.common.id.CDOID.ObjectType; |
| import org.eclipse.emf.cdo.common.id.CDOIDUtil; |
| import org.eclipse.emf.cdo.common.revision.CDORevision; |
| import org.eclipse.emf.cdo.server.mongodb.IMongoDBStore; |
| import org.eclipse.emf.cdo.spi.server.LongIDStore; |
| |
| import org.eclipse.net4j.util.lifecycle.Lifecycle; |
| |
| import com.mongodb.DBObject; |
| |
| import java.util.Comparator; |
| import java.util.Set; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public interface IDHandler extends Comparator<CDOID> |
| { |
| public IMongoDBStore getStore(); |
| |
| public Set<ObjectType> getObjectIDTypes(); |
| |
| public CDOID getMinCDOID(); |
| |
| public CDOID getMaxCDOID(); |
| |
| public boolean isLocalCDOID(CDOID id); |
| |
| public CDOID getNextCDOID(CDORevision revision); |
| |
| public CDOID createCDOID(String val); |
| |
| public CDOID getNextLocalObjectID(); |
| |
| public void setNextLocalObjectID(CDOID nextLocalObjectID); |
| |
| public CDOID getLastObjectID(); |
| |
| public void setLastObjectID(CDOID lastObjectID); |
| |
| public void write(DBObject doc, String key, CDOID id); |
| |
| public CDOID read(DBObject doc, String key); |
| |
| public Object toValue(CDOID id); |
| |
| public CDOID fromValue(Object value); |
| |
| /** |
| * @author Eike Stepper |
| */ |
| public class LongValue extends Lifecycle implements IDHandler |
| { |
| public static final CDOID MIN = CDOID.NULL; |
| |
| public static final CDOID MAX = create(Long.MAX_VALUE); |
| |
| private MongoDBStore store; |
| |
| private CDOID lastObjectID = MIN; |
| |
| private CDOID nextLocalObjectID = MAX; |
| |
| public LongValue(MongoDBStore store) |
| { |
| this.store = store; |
| } |
| |
| public MongoDBStore getStore() |
| { |
| return store; |
| } |
| |
| public Set<ObjectType> getObjectIDTypes() |
| { |
| return LongIDStore.OBJECT_ID_TYPES; |
| } |
| |
| public CDOID getMinCDOID() |
| { |
| return MIN; |
| } |
| |
| public CDOID getMaxCDOID() |
| { |
| return MAX; |
| } |
| |
| public int compare(CDOID id1, CDOID id2) |
| { |
| return id1.compareTo(id2); |
| } |
| |
| public CDOID createCDOID(String val) |
| { |
| Long id = Long.valueOf(val); |
| return create(id); |
| } |
| |
| public synchronized CDOID getLastObjectID() |
| { |
| return lastObjectID; |
| } |
| |
| public synchronized void setLastObjectID(CDOID lastObjectID) |
| { |
| this.lastObjectID = lastObjectID; |
| } |
| |
| public synchronized CDOID getNextLocalObjectID() |
| { |
| return nextLocalObjectID; |
| } |
| |
| public synchronized void setNextLocalObjectID(CDOID nextLocalObjectID) |
| { |
| this.nextLocalObjectID = nextLocalObjectID; |
| } |
| |
| public synchronized CDOID getNextCDOID(CDORevision revision) |
| { |
| if (revision.getBranch().isLocal()) |
| { |
| CDOID result = nextLocalObjectID; |
| nextLocalObjectID = create(value(result) - 1); |
| return result; |
| } |
| |
| lastObjectID = create(value(lastObjectID) + 1); |
| return lastObjectID; |
| } |
| |
| public boolean isLocalCDOID(CDOID id) |
| { |
| return compare(id, nextLocalObjectID) > 0; |
| } |
| |
| private static CDOID create(long id) |
| { |
| return CDOIDUtil.createLong(id); |
| } |
| |
| private static long value(CDOID id) |
| { |
| return CDOIDUtil.getLong(id); |
| } |
| |
| public void write(DBObject doc, String key, CDOID id) |
| { |
| long value = toValue(id); |
| doc.put(key, value); |
| } |
| |
| public CDOID read(DBObject doc, String key) |
| { |
| long value = (Long)doc.get(key); |
| return fromValue(value); |
| } |
| |
| public Long toValue(CDOID id) |
| { |
| return CDOIDUtil.getLong(id); |
| } |
| |
| public CDOID fromValue(Object value) |
| { |
| return CDOIDUtil.createLong((Long)value); |
| } |
| } |
| } |