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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.net4j.db.hsqldb;
import org.eclipse.net4j.db.DBType;
import org.eclipse.net4j.db.ddl.IDBField;
import org.eclipse.net4j.spi.db.DBAdapter;
import org.hsqldb.jdbcDriver;
import javax.sql.DataSource;
import java.sql.Driver;
import java.util.StringTokenizer;
/**
* @author Eike Stepper
* @since 2.0
*/
public class HSQLDBAdapter extends DBAdapter
{
private static final String NAME = "hsqldb";
public static final String VERSION = "1.8.0.8";
public HSQLDBAdapter()
{
super(NAME, VERSION);
}
public Driver getJDBCDriver()
{
return new jdbcDriver();
}
public DataSource createJDBCDataSource()
{
return new HSQLDBDataSource();
}
@Override
protected String getTypeName(IDBField field)
{
DBType type = field.getType();
switch (type)
{
case BOOLEAN:
case BIT:
case TINYINT:
case SMALLINT:
case INTEGER:
case BIGINT:
case FLOAT:
case REAL:
case DOUBLE:
case DATE:
case TIME:
case TIMESTAMP:
return type.toString();
case LONGVARCHAR:
return "LONGVARCHAR";
case LONGVARBINARY:
return "LONGVARBINARY";
case BLOB:
return "LONGVARBINARY";
case CLOB:
return "LONGVARCHAR";
case CHAR:
case VARCHAR:
case BINARY:
case VARBINARY:
return type.toString() + field.formatPrecision();
case NUMERIC:
case DECIMAL:
return type.toString() + field.formatPrecisionAndScale();
}
return super.getTypeName(field);
}
public String[] getReservedWords()
{
return getSQL92ReservedWords();
}
@Override
public void appendValue(StringBuilder builder, IDBField field, Object value)
{
Object newValue = value;
if (value instanceof String)
{
// HSQLDB just adds one additional single quote for a single quote
String str = (String)value;
StringTokenizer tokenizer = new StringTokenizer(str, "\'", true); // split on single quote
StringBuilder newValueBuilder = new StringBuilder();
while (tokenizer.hasMoreTokens())
{
String current = tokenizer.nextToken();
if (current.length() == 0)
{
continue;
}
if (current.length() > 1) // >1 -> can not be token -> normal string
{
newValueBuilder.append(current);
}
else
{ // length == 1
newValueBuilder.append(processEscape(current.charAt(0)));
}
}
newValue = newValueBuilder.toString();
}
else if (value instanceof Character)
{
newValue = processEscape((Character)value);
}
super.appendValue(builder, field, newValue);
}
private Object processEscape(char c)
{
if (c == '\'') // one single quote -->
{
return "\'\'"; // results two single quotes
}
return c; // no escape character --> return as is
}
}
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