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/***************************************************************************
* Copyright (c) 2004 - 2007 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.model.CDOPackageImpl;
import org.eclipse.emf.cdo.protocol.model.CDOClass;
import org.eclipse.emf.cdo.protocol.model.CDOFeature;
import org.eclipse.emf.cdo.protocol.model.CDOType;
import org.eclipse.emf.cdo.server.IStore;
import org.eclipse.emf.cdo.server.db.IMappingStrategy;
import org.eclipse.net4j.db.DBType;
import org.eclipse.net4j.db.IDBField;
import org.eclipse.net4j.db.IDBSchema;
import org.eclipse.net4j.db.IDBTable;
import org.eclipse.net4j.internal.db.DBSchema;
import org.eclipse.net4j.util.ImplementationError;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Properties;
import java.util.Set;
/**
* @author Eike Stepper
*/
public abstract class MappingStrategy implements IMappingStrategy
{
private IStore store;
private Properties properties;
private IDBSchema schema;
public MappingStrategy()
{
}
public IStore getStore()
{
return store;
}
public void setStore(IStore store)
{
this.store = store;
}
public Properties getProperties()
{
return properties;
}
public void setProperties(Properties properties)
{
this.properties = properties;
}
public IDBSchema getSchema()
{
return schema;
}
@Override
public String toString()
{
return getType();
}
public Set<IDBTable> map(CDOPackageImpl[] cdoPackages)
{
// Lazily create the schema
if (schema == null)
{
schema = createSchema();
}
// Prepare data structures
Set<IDBTable> affectedTables = new HashSet();
List<CDOClass> cdoClasses = new ArrayList();
// Map all packages before classes are mapped
for (CDOPackageImpl cdoPackage : cdoPackages)
{
((DBPackageInfo)cdoPackage.getServerInfo()).setSchema(schema);
}
// Map all classes before features are mapped
for (CDOPackageImpl cdoPackage : cdoPackages)
{
for (CDOClass cdoClass : cdoPackage.getClasses())
{
cdoClasses.add(cdoClass);
IDBTable table = map(schema, cdoClass, affectedTables);
if (table != null)
{
((DBClassInfo)cdoClass.getServerInfo()).setTable(table);
affectedTables.add(table);
}
}
}
// Map all features
for (CDOClass cdoClass : cdoClasses)
{
for (CDOFeature cdoFeature : cdoClass.getAllFeatures())
{
IDBField field = map(schema, cdoClass, cdoFeature, affectedTables);
if (field != null)
{
((DBFeatureInfo)cdoFeature.getServerInfo()).setField(field);
affectedTables.add(field.getTable());
}
}
}
return affectedTables;
}
/**
* @param affectedTables
* Can be used to indicate the creation or modification of additional
* tables. There is no need to add the returned table to this set of
* affected tables. The caller takes care of that.
*/
protected abstract IDBTable map(IDBSchema schema, CDOClass cdoClass, Set<IDBTable> affectedTables);
/**
* @param affectedTables
* Can be used to indicate the creation or modification of additional
* tables. There is no need to add the table of the returned field to
* this set of affected tables. The caller takes care of that.
*/
protected abstract IDBField map(IDBSchema schema, CDOClass cdoClass, CDOFeature cdoFeature,
Set<IDBTable> affectedTables);
protected IDBSchema createSchema()
{
String name = store.getRepository().getName();
return new DBSchema(name);
}
protected void initTable(IDBTable table, boolean full)
{
table.addField("cdo_id", DBType.BIGINT);
if (full)
{
table.addField("cdo_class", DBType.INTEGER);
}
}
protected DBType getDBType(CDOType type)
{
if (type == CDOType.BOOLEAN || type == CDOType.BOOLEAN_OBJECT)
{
return DBType.BOOLEAN;
}
else if (type == CDOType.BYTE || type == CDOType.BYTE_OBJECT)
{
return DBType.SMALLINT;
}
else if (type == CDOType.CHAR || type == CDOType.CHARACTER_OBJECT)
{
return DBType.CHAR;
}
else if (type == CDOType.DATE)
{
return DBType.DATE;
}
else if (type == CDOType.DOUBLE || type == CDOType.DOUBLE_OBJECT)
{
return DBType.DOUBLE;
}
else if (type == CDOType.FLOAT || type == CDOType.FLOAT_OBJECT)
{
return DBType.FLOAT;
}
else if (type == CDOType.INT || type == CDOType.INTEGER_OBJECT)
{
return DBType.INTEGER;
}
else if (type == CDOType.LONG || type == CDOType.INTEGER_OBJECT)
{
return DBType.BIGINT;
}
else if (type == CDOType.OBJECT)
{
return DBType.BIGINT;
}
else if (type == CDOType.SHORT || type == CDOType.SHORT_OBJECT)
{
return DBType.SMALLINT;
}
else if (type == CDOType.STRING)
{
return DBType.LONGVARCHAR;
}
throw new ImplementationError("Unrecognized CDOType: " + type);
}
}
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