Application: gvSIG desktop

/*

 * gvSIG. Desktop Geographic Information System.

 * 

 * Copyright (C) 2007-2020 gvSIG Association.

 * 

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 3

 * of the License, or (at your option) any later version.

 * 

 * This program 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 General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License 

 * along with this program. If not, see <https://www.gnu.org/licenses/>. 

 * 

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.sqlite.dal.functions;

import java.sql.SQLException;

import org.sqlite.SQLiteConnection;

/**

 *

 * @author gvSIG Team

 */

public class Reverseinstr extends Functions.AbstractFunction {

    public Reverseinstr(SQLiteConnection conn) {

        super("REVERSEINSTR", conn);

    }

    @Override

    protected void xFunc() throws SQLException {

        String string = value_text(0);

        if( string==null ) {

            this.result();

            return;

        }

        String substring = value_text(1);

        if( substring==null ) {

            this.result();

            return;

        }

        int n = string.lastIndexOf(substring);

        if (n < 0) {

            this.result();

        } else {

            this.result(n+1);

        }

    }

}