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/*
* Copyright (c) 2009-2013 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.net4j.db.h2;
import org.eclipse.net4j.db.DBType;
import org.eclipse.net4j.db.DBUtil;
import org.eclipse.net4j.db.DBUtil.RunnableWithConnection;
import org.eclipse.net4j.db.IDBAdapter;
import org.eclipse.net4j.db.ddl.IDBField;
import org.eclipse.net4j.db.ddl.IDBIndex.Type;
import org.eclipse.net4j.db.ddl.IDBTable;
import org.eclipse.net4j.spi.db.DBAdapter;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
/**
* A {@link IDBAdapter DB adapter} for <a href="http://www.h2database.com/html/main.html">H2</a> databases.
*
* @author Eike Stepper
* @since 2.0
*/
public class H2Adapter extends DBAdapter
{
private static final String NAME = "h2"; //$NON-NLS-1$
public static final String VERSION = "1.1.114"; //$NON-NLS-1$
public H2Adapter()
{
super(NAME, VERSION);
}
@Override
protected String getTypeName(IDBField field)
{
DBType type = field.getType();
switch (type)
{
case BIT:
return "SMALLINT"; //$NON-NLS-1$
case FLOAT:
return "REAL"; //$NON-NLS-1$
case LONGVARCHAR:
return "VARCHAR"; //$NON-NLS-1$
case NUMERIC:
return "DECIMAL"; //$NON-NLS-1$
case LONGVARBINARY:
case VARBINARY:
return "BLOB"; //$NON-NLS-1$
}
return super.getTypeName(field);
}
public String[] getReservedWords()
{
return getSQL92ReservedWords();
}
@Override
protected boolean isPrimaryKeyShadow(Connection connection, IDBTable table, String name, Type type, IDBField[] fields)
{
if (!name.toUpperCase().startsWith("PRIMARY_KEY"))
{
return false;
}
return super.isPrimaryKeyShadow(connection, table, name, type, fields);
}
@Override
public boolean isDuplicateKeyException(SQLException ex)
{
String sqlState = ex.getSQLState();
return "23001".equals(sqlState) || "23505".equals(sqlState);
}
@Override
public String sqlRenameField(IDBField field, String oldName)
{
return "ALTER TABLE " + field.getTable() + " ALTER COLUMN " + oldName + " RENAME TO " + field;
}
/**
* @since 4.2
*/
public static void createSchema(DataSource dataSource, final String name, final boolean dropIfExists)
{
DBUtil.execute(DBUtil.createConnectionProvider(dataSource), new RunnableWithConnection<Object>()
{
public Object run(Connection connection) throws SQLException
{
if (dropIfExists)
{
DBUtil.execute(connection, "DROP SCHEMA IF EXISTS " + name);
}
DBUtil.execute(connection, "CREATE SCHEMA IF NOT EXISTS " + name);
return null;
}
});
}
}
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