/*
* Copyright 2008 biaoping.yin
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.frameworkset.orm.adapter;
/*
*
* Licensed under the Apache License, Version 2.0 (the "License")
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.sql.Connection;
import java.sql.SQLException;
import java.sql.Statement;
import com.frameworkset.orm.platform.PlatformInterbaseImpl;
/**
* This code should be used for an Interbase database pool.
*
* @author <a href="mailto:frank@opticode.co.za">Frank Conradie</a>
* @version $Id: DBInterbase.java,v 1.9 2005/01/31 19:43:55 tfischer Exp $
*/
public class DBInterbase extends DB
{
public DBInterbase()
{
this.platform = new PlatformInterbaseImpl();
}
/**
* This method is used to ignore case.
*
* @param in The string to transform to upper case.
* @return The upper case string.
*/
public String toUpperCase(String in)
{
return new StringBuffer("UPPER(").append(in).append(")").toString();
}
/**
* This method is used to ignore case.
*
* @param in The string whose case to ignore.
* @return The string in a case that can be ignored.
*/
public String ignoreCase(String in)
{
return new StringBuffer("UPPER(").append(in).append(")").toString();
}
/**
* This method is used to ignore case in an ORDER BY clause.
* Usually it is the same as ignoreCase, but some databases
* (Interbase for example) does not use the same SQL in ORDER BY
* and other clauses.
*
* @param in The string whose case to ignore.
* @return The string in a case that can be ignored.
*/
public String ignoreCaseInOrderBy(String in)
{
return in;
}
/**
* Gets the string delimiter (usually '\'').
*
* @return The delimiter.
*/
public char getStringDelimiter()
{
return '\'';
}
/**
* @see com.frameworkset.orm.adapter.DB#getIDMethodType()
*/
public String getIDMethodType()
{
return NO_ID_METHOD;
}
/**
* @see com.frameworkset.orm.adapter.DB#getIDMethodSQL(Object obj)
*/
public String getIDMethodSQL(Object obj)
{
return null;
}
/**
* Locks the specified table.
*
* @param con The JDBC connection to use.
* @param table The name of the table to lock.
* @exception SQLException No Statement could be created or executed.
*/
public void lockTable(Connection con, String table) throws SQLException
{
Statement statement = con.createStatement();
StringBuffer stmt = new StringBuffer();
stmt.append("SET TRANSACTION ")
.append("ISOLATION LEVEL READ COMMITTED ")
.append("NO RECORD_VERSION WAIT ")
.append("RESERVING ")
.append(table)
.append(" FOR PROTECTED WRITE");
statement.executeQuery(stmt.toString());
}
/**
* Unlocks the specified table.
*
* @param con The JDBC connection to use.
* @param table The name of the table to unlock.
* @exception SQLException No Statement could be created or executed.
*/
public void unlockTable(Connection con, String table) throws SQLException
{
// Tables in Interbase are unlocked when a commit is issued.
// The user may have issued a commit but do it here to be
// sure.
con.commit();
}
}