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package com.sun.gjc.spi.jdbc30;


import com.sun.gjc.spi.base.StatementWrapper;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * Wrapper for JDBC 3.0 Statement
 */
public class StatementWrapper30 extends StatementWrapper {

    /**
     * Creates a new instance of StatementWrapper for JDBC 3.0

     *
     * @param con       ConnectionWrapper 

     * @param statement Statement that is to be wrapped

     */
    public StatementWrapper30(Connection con, Statement statement) {
        super(con, statement);
    }

    /**
     * Executes the given SQL statement, which returns a single
     * ResultSet object.
     *
     * @param sql an SQL statement to be sent to the database, typically a
     *            static SQL SELECT statement
     * @return a ResultSet object that contains the data produced
     *         by the given query; never null
     * @throws SQLException if a database access error occurs or the given
     *                      SQL statement produces anything other than a single
     *                      ResultSet object
     */
    public java.sql.ResultSet executeQuery(final String sql) throws
            java.sql.SQLException {
        ResultSet rs = jdbcStatement.executeQuery(sql);
        return new ResultSetWrapper30(this, rs);
    }

    /**
     * Retrieves any auto-generated keys created as a result of executing this
     * Statement object. If this Statement object did
     * not generate any keys, an empty ResultSet
     * object is returned.
     *
     * @return a ResultSet object containing the auto-generated key(s)
     *         generated by the execution of this Statement object
     * @throws SQLException if a database access error occurs
     * @since 1.4
     */
    public java.sql.ResultSet getGeneratedKeys() throws java.sql.SQLException {
        ResultSet rs = jdbcStatement.getGeneratedKeys();
        if (rs == null)
            return null;
        return new ResultSetWrapper30(this, rs);
    }

    /**
     * Retrieves the current result as a ResultSet object.
     * This method should be called only once per result.
     *
     * @return the current result as a ResultSet object or
     *         null if the result is an update count or there are no more results
     * @throws SQLException if a database access error occurs
     * @see #execute
     */
    public java.sql.ResultSet getResultSet() throws java.sql.SQLException {
        ResultSet rs = jdbcStatement.getResultSet();
        if (rs == null)
            return null;
        return new ResultSetWrapper30(this, rs);
    }
}