*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ---------------
* CommandDrop.java
* ---------------
* Author: Volker Berlin
*
*/
package smallsql.database;
import java.io.*;
public class CommandDrop extends Command {
CommandDrop( Logger log, String catalog, String name, int type ){
super(log);
this.type = type;
this.catalog = catalog;
this.name = name;
}
void executeImpl(SSConnection con, SSStatement st) throws Exception {
switch(type){
case SQLTokenizer.DATABASE:
if(name.startsWith("file:"))
name = name.substring(5);
File dir = new File( name );
if(!dir.isDirectory() ||
!new File( dir, Utils.MASTER_FILENAME ).exists())
throw Utils.createSQLException("Database '" + name + "' does not exists.");
File files[] = dir.listFiles();
if(files != null)
for(int i=0; i<files.length; i++){
files[i].delete();
}
dir.delete();
break;
case SQLTokenizer.TABLE:
Database.dropTable( con, catalog, name );
break;
case SQLTokenizer.VIEW:
Database.dropView( con, catalog, name );
break;
case SQLTokenizer.INDEX:
case SQLTokenizer.PROCEDURE:
throw new java.lang.UnsupportedOperationException();
default:
throw new Error();
}
}
}