resultsetjdbc20.java

derby database source code.good for you.

/*

   Derby - Class org.apache.derbyTesting.functionTests.tests.jdbcapi.resultsetJdbc20

   Copyright 1999, 2005 The Apache Software Foundation or its licensors, as applicable.

   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 org.apache.derbyTesting.functionTests.tests.jdbcapi;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSetMetaData;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.SQLException;
import java.sql.Types;

import org.apache.derby.tools.ij;
import org.apache.derby.tools.JDBCDisplayUtil;

/**
 * Test of additional methods in JDBC2.0 result set meta-data.
 * This program simply calls each of the additional result set meta-data
 * methods, one by one, and prints the results.
 *
 */

public class resultsetJdbc20 { 
	public static void main(String[] args) {
		Connection con;
		ResultSetMetaData met;
		ResultSet rs;
		Statement stmt;
		String[]  columnNames = {"i", "s", "r", "d", "dt", "t", "ts", "c", "v", "dc"};

		System.out.println("Test resultsetJdbc20 starting");

		try
		{
			// use the ij utility to read the property file and
			// make the initial connection.
			ij.getPropertyArg(args);
			con = ij.startJBMS();
			stmt = con.createStatement();

      //create a table, insert a row, do a select from the table,
      //get the resultset meta data and go through each column in
      //the selection list and get it's column class name.
			stmt.execute("create table t (i int, s smallint, r real, "+
				"d double precision, dt date, t time, ts timestamp, "+
				"c char(10), v varchar(40) not null, dc dec(10,2))");
			stmt.execute("insert into t values(1,2,3.3,4.4,date('1990-05-05'),"+
						 "time('12:06:06'),timestamp('1990-07-07 07:07:07.07'),"+
						 "'eight','nine', 10.1)");

			rs = stmt.executeQuery("select * from t");
			met = rs.getMetaData();

			int colCount;
			System.out.println("getColumnCount(): "+(colCount=met.getColumnCount()));

			// JDBC columns use 1-based counting
			for (int i=1;i<=colCount;i++) {
				// this test suffers from bug 5775.
				// this if should be removed if the bug is fixed.	
				if (i==2 && (met.getColumnClassName(i).equals("java.lang.Short")))
				{
					System.out.println("getColumnName("+i+"): "+met.getColumnName(i));
					//System.out.println("getColumnClassName("+i+"): "+met.getColumnClassName(i));
					System.out.println("FAIL: should be java.lang.Integer - but is java.lang.Short. see beetle 5775");	
				}
				else
				{
					System.out.println("getColumnName("+i+"): "+met.getColumnName(i));
					System.out.println("getColumnClassName("+i+"): "+met.getColumnClassName(i));
				}
			}

			rs.close();

			stmt.close();
			con.close();

		}
		catch (SQLException e) {
			dumpSQLExceptions(e);
			e.printStackTrace();
		}
		catch (Throwable e) {
			System.out.println("FAIL -- unexpected exception: "+e);
			e.printStackTrace();
		}

		System.out.println("Test resultsetJdbc20 finished");
    }

	static private void dumpSQLExceptions (SQLException se) {
		System.out.println("FAIL -- unexpected exception");
		while (se != null) {
			System.out.println("SQLSTATE("+se.getSQLState()+"): "+se);
			se = se.getNextException();
		}
	}

}