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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany.
* 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.db;
import org.eclipse.emf.cdo.internal.protocol.id.CDOIDMetaImpl;
import org.eclipse.emf.cdo.internal.protocol.model.CDOClassImpl;
import org.eclipse.emf.cdo.internal.protocol.model.CDOClassProxy;
import org.eclipse.emf.cdo.internal.protocol.model.CDOPackageImpl;
import org.eclipse.emf.cdo.internal.protocol.revision.InternalCDORevision;
import org.eclipse.emf.cdo.protocol.id.CDOID;
import org.eclipse.emf.cdo.protocol.id.CDOIDMetaRange;
import org.eclipse.emf.cdo.protocol.id.CDOIDUtil;
import org.eclipse.emf.cdo.protocol.model.CDOClass;
import org.eclipse.emf.cdo.protocol.model.CDOClassRef;
import org.eclipse.emf.cdo.protocol.model.CDOFeature;
import org.eclipse.emf.cdo.protocol.model.CDOModelUtil;
import org.eclipse.emf.cdo.protocol.model.CDOPackage;
import org.eclipse.emf.cdo.protocol.model.CDOPackageInfo;
import org.eclipse.emf.cdo.protocol.model.CDOType;
import org.eclipse.emf.cdo.protocol.revision.CDORevision;
import org.eclipse.emf.cdo.protocol.revision.CDORevisionUtil;
import org.eclipse.emf.cdo.server.IPackageManager;
import org.eclipse.emf.cdo.server.IRepository;
import org.eclipse.emf.cdo.server.IRevisionManager;
import org.eclipse.emf.cdo.server.ISession;
import org.eclipse.emf.cdo.server.IView;
import org.eclipse.emf.cdo.server.db.IClassMapping;
import org.eclipse.emf.cdo.server.db.IDBStoreReader;
import org.eclipse.emf.cdo.server.db.IMappingStrategy;
import org.eclipse.emf.cdo.server.internal.db.bundle.OM;
import org.eclipse.net4j.db.DBException;
import org.eclipse.net4j.db.DBUtil;
import org.eclipse.net4j.db.IDBRowHandler;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import org.eclipse.net4j.util.io.CloseableIterator;
import java.util.ArrayList;
import java.util.Collection;
/**
* @author Eike Stepper
*/
public class DBStoreReader extends DBStoreAccessor implements IDBStoreReader
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, DBStoreReader.class);
public DBStoreReader(DBStore store, ISession session) throws DBException
{
super(store, session);
}
protected DBStoreReader(DBStore store, IView view) throws DBException
{
super(store, view);
}
public DBStoreChunkReader createChunkReader(CDORevision revision, CDOFeature feature)
{
return new DBStoreChunkReader(this, revision, feature);
}
public Collection<CDOPackageInfo> readPackageInfos()
{
final Collection<CDOPackageInfo> result = new ArrayList<CDOPackageInfo>(0);
IDBRowHandler rowHandler = new IDBRowHandler()
{
public boolean handle(int row, final Object... values)
{
String packageURI = (String)values[0];
boolean dynamic = getBoolean(values[1]);
long lowerBound = (Long)values[2];
long upperBound = (Long)values[3];
CDOIDMetaRange metaIDRange = lowerBound == 0 ? null : CDOIDUtil.createMetaRange(new CDOIDMetaImpl(lowerBound),
(int)(upperBound - lowerBound) + 1);
result.add(new CDOPackageInfo(packageURI, dynamic, metaIDRange));
return true;
}
};
DBUtil.select(getConnection(), rowHandler, CDODBSchema.PACKAGES_URI, CDODBSchema.PACKAGES_DYNAMIC,
CDODBSchema.PACKAGES_RANGE_LB, CDODBSchema.PACKAGES_RANGE_UB);
return result;
}
public void readPackage(CDOPackage cdoPackage)
{
String where = CDODBSchema.PACKAGES_URI.getName() + " = '" + cdoPackage.getPackageURI() + "'";
Object[] values = DBUtil.select(getConnection(), where, CDODBSchema.PACKAGES_ID, CDODBSchema.PACKAGES_NAME,
CDODBSchema.PACKAGES_ECORE);
PackageServerInfo.setDBID(cdoPackage, (Integer)values[0]);
((CDOPackageImpl)cdoPackage).setName((String)values[1]);
((CDOPackageImpl)cdoPackage).setEcore((String)values[2]);
readClasses(cdoPackage);
mapPackages(cdoPackage);
}
protected void readClasses(final CDOPackage cdoPackage)
{
IDBRowHandler rowHandler = new IDBRowHandler()
{
public boolean handle(int row, Object... values)
{
int classID = (Integer)values[0];
int classifierID = (Integer)values[1];
String name = (String)values[2];
boolean isAbstract = getBoolean(values[3]);
CDOClass cdoClass = CDOModelUtil.createClass(cdoPackage, classifierID, name, isAbstract);
ClassServerInfo.setDBID(cdoClass, classID);
((CDOPackageImpl)cdoPackage).addClass(cdoClass);
readSuperTypes(cdoClass, classID);
readFeatures(cdoClass, classID);
return true;
}
};
String where = CDODBSchema.CLASSES_PACKAGE.getName() + "=" + ServerInfo.getDBID(cdoPackage);
DBUtil.select(getConnection(), rowHandler, where, CDODBSchema.CLASSES_ID, CDODBSchema.CLASSES_CLASSIFIER,
CDODBSchema.CLASSES_NAME, CDODBSchema.CLASSES_ABSTRACT);
}
protected void readSuperTypes(final CDOClass cdoClass, int classID)
{
IDBRowHandler rowHandler = new IDBRowHandler()
{
public boolean handle(int row, Object... values)
{
String packageURI = (String)values[0];
int classifierID = (Integer)values[1];
((CDOClassImpl)cdoClass).addSuperType(CDOModelUtil.createClassRef(packageURI, classifierID));
return true;
}
};
String where = CDODBSchema.SUPERTYPES_TYPE.getName() + "=" + classID;
DBUtil.select(getConnection(), rowHandler, where, CDODBSchema.SUPERTYPES_SUPERTYPE_PACKAGE,
CDODBSchema.SUPERTYPES_SUPERTYPE_CLASSIFIER);
}
protected void readFeatures(final CDOClass cdoClass, int classID)
{
IDBRowHandler rowHandler = new IDBRowHandler()
{
public boolean handle(int row, Object... values)
{
int featureID = (Integer)values[1];
String name = (String)values[2];
CDOType type = CDOModelUtil.getType((Integer)values[3]);
boolean many = getBoolean(values[6]);
CDOFeature feature;
if (type == CDOType.OBJECT)
{
String packageURI = (String)values[4];
int classifierID = (Integer)values[5];
boolean containment = getBoolean(values[7]);
CDOClassRef classRef = CDOModelUtil.createClassRef(packageURI, classifierID);
CDOClassProxy referenceType = new CDOClassProxy(classRef, cdoClass.getPackageManager());
feature = CDOModelUtil.createReference(cdoClass, featureID, name, referenceType, many, containment);
}
else
{
feature = CDOModelUtil.createAttribute(cdoClass, featureID, name, type, many);
}
FeatureServerInfo.setDBID(feature, (Integer)values[0]);
((CDOClassImpl)cdoClass).addFeature(feature);
return true;
}
};
String where = CDODBSchema.FEATURES_CLASS.getName() + "=" + classID;
DBUtil.select(getConnection(), rowHandler, where, CDODBSchema.FEATURES_ID, CDODBSchema.FEATURES_FEATURE,
CDODBSchema.FEATURES_NAME, CDODBSchema.FEATURES_TYPE, CDODBSchema.FEATURES_REFERENCE_PACKAGE,
CDODBSchema.FEATURES_REFERENCE_CLASSIFIER, CDODBSchema.FEATURES_MANY, CDODBSchema.FEATURES_CONTAINMENT);
}
public String readPackageURI(int packageID)
{
String where = CDODBSchema.PACKAGES_ID.getName() + "=" + packageID;
Object[] uri = DBUtil.select(getConnection(), where, CDODBSchema.PACKAGES_URI);
return (String)uri[0];
}
public CloseableIterator<CDOID> readObjectIDs(boolean withTypes)
{
if (TRACER.isEnabled())
{
TRACER.trace("Selecting object IDs");
}
return getStore().getMappingStrategy().readObjectIDs(this, withTypes);
}
public CDOClassRef readObjectType(CDOID id)
{
if (TRACER.isEnabled())
{
TRACER.format("Selecting object type: {0}", id);
}
return getStore().getMappingStrategy().readObjectType(this, id);
}
public CDOClassRef readClassRef(int classID)
{
String where = CDODBSchema.CLASSES_ID.getName() + "=" + classID;
Object[] res = DBUtil.select(getConnection(), where, CDODBSchema.CLASSES_CLASSIFIER, CDODBSchema.CLASSES_PACKAGE);
int classifierID = (Integer)res[0];
String packageURI = readPackageURI((Integer)res[1]);
return CDOModelUtil.createClassRef(packageURI, classifierID);
}
public CDORevision readRevision(CDOID id, int referenceChunk)
{
if (TRACER.isEnabled())
{
TRACER.format("Selecting revision: {0}", id);
}
IRevisionManager revisionManager = getStore().getRepository().getRevisionManager();
CDOClassImpl cdoClass = getObjectType(id);
InternalCDORevision revision = (InternalCDORevision)CDORevisionUtil.create(revisionManager, cdoClass, id);
IMappingStrategy mappingStrategy = getStore().getMappingStrategy();
IClassMapping mapping = mappingStrategy.getClassMapping(cdoClass);
mapping.readRevision(this, revision, referenceChunk);
return revision;
}
public CDORevision readRevisionByTime(CDOID id, int referenceChunk, long timeStamp)
{
if (TRACER.isEnabled())
{
TRACER.format("Selecting revision: {0}, timestamp={1,date} {1,time}", id, timeStamp);
}
IRevisionManager revisionManager = getStore().getRepository().getRevisionManager();
CDOClassImpl cdoClass = getObjectType(id);
InternalCDORevision revision = (InternalCDORevision)CDORevisionUtil.create(revisionManager, cdoClass, id);
IMappingStrategy mappingStrategy = getStore().getMappingStrategy();
IClassMapping mapping = mappingStrategy.getClassMapping(cdoClass);
mapping.readRevisionByTime(this, revision, timeStamp, referenceChunk);
return revision;
}
public CDORevision readRevisionByVersion(CDOID id, int referenceChunk, int version)
{
if (TRACER.isEnabled())
{
TRACER.format("Selecting revision: {0}, version={1}", id, version);
}
IRevisionManager revisionManager = getStore().getRepository().getRevisionManager();
CDOClassImpl cdoClass = getObjectType(id);
InternalCDORevision revision = (InternalCDORevision)CDORevisionUtil.create(revisionManager, cdoClass, id);
IMappingStrategy mappingStrategy = getStore().getMappingStrategy();
IClassMapping mapping = mappingStrategy.getClassMapping(cdoClass);
mapping.readRevisionByVersion(this, revision, version, referenceChunk);
return revision;
}
public CDOID readResourceID(String path)
{
IMappingStrategy mappingStrategy = getStore().getMappingStrategy();
return mappingStrategy.readResourceID(this, path);
}
public String readResourcePath(CDOID id)
{
IMappingStrategy mappingStrategy = getStore().getMappingStrategy();
return mappingStrategy.readResourcePath(this, id);
}
protected CDOClassImpl getObjectType(CDOID id)
{
IRepository repository = getStore().getRepository();
IPackageManager packageManager = repository.getPackageManager();
CDOClassRef type = readObjectType(id);
return (CDOClassImpl)type.resolve(packageManager);
}
}
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