JDBC-ODBC - Missing Flat Data Files

This section describes what will happen if a flat data file is missing and you are trying to use it in a query.

If you made a mistake when writing the SELECT query statement or creating the data files, you may get a statement that refers to a table without any data file. In this case, the ODBC driver will return an exception. Try this sample program:

/* OdbcFlatMissingFile.java
 * Copyright (c) HerongYang.com. All Rights Reserved.
 */
import java.sql.*;
public class OdbcFlatMissingFile {
  public static void main(String [] args) {
    Connection con = null;
    try {
      Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
      con = DriverManager.getConnection("jdbc:odbc:HY_FLAT");
      Statement sta = con.createStatement();

// Running a query on a single table file
      ResultSet res = sta.executeQuery(
        "SELECT * FROM Account.txt");
      System.out.println("List of Accounts: ");
      while (res.next()) {
         System.out.println("   "+res.getString(1));
      }
      res.close();

      sta.close();
      con.close();
    } catch (Exception e) {
      System.err.println("Exception: "+e.getMessage());
    }
  }
}

Here is what I got from this program. The error message is pretty clear.

herong> progra~1\java\jdk1.7.0_45\bin\javac
   OdbcFlatMissingFile.java

herong> progra~1\java\jdk1.7.0_45\bin\java OdbcFlatMissingFile

Exception: [Microsoft][ODBC Text Driver]
The Microsoft Jet database engine could not find the object
'Account.txt'.  Make sure the object exists and that you spell
its name and the path name correctly.

Table of Contents

 About This Book

 JDBC (Java Database Connectivity) Introduction

 JDK (Java SE) Installation

 Installing and Running Java DB - Derby

 Derby (Java DB) JDBC Driver

 Derby (Java DB) JDBC DataSource Objects

 Java DB (Derby) - DML Statements

 Java DB (Derby) - ResultSet Objects of Queries

 Java DB (Derby) - PreparedStatement

 MySQL Installation on Windows

 MySQL JDBC Driver (MySQL Connector/J)

 MySQL - PreparedStatement

 MySQL - Reference Implementation of JdbcRowSet

 MySQL - JBDC CallableStatement

 MySQL CLOB (Character Large Object) - TEXT

 MySQL BLOB (Binary Large Object) - BLOB

 Oracle Express Edition Installation on Windows

 Oracle JDBC Drivers

 Oracle - Reference Implementation of JdbcRowSet

 Oracle - PreparedStatement

 Oracle - JBDC CallableStatement

 Oracle CLOB (Character Large Object) - TEXT

 Oracle BLOB (Binary Large Object) - BLOB

 Microsoft SQL Server Express Edition

 Microsoft JDBC Driver for SQL Server

 Microsoft JDBC Driver - Query Statements and Result Sets

 Microsoft JDBC Driver - DatabaseMetaData Object

 Microsoft JDBC Driver - DDL Statements

 Microsoft JDBC Driver - DML Statements

 SQL Server - PreparedStatement

 SQL Server CLOB (Character Large Object) - TEXT

 SQL Server BLOB (Binary Large Object) - BLOB

 JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver

JDBC-ODBC Bridge Driver - Flat Text Files

 JDBC-ODBC - Creating DSN for Flat Test File

 JDBC-ODBC - Connecting to Flat Text Files

 JDBC-ODBC - Getting Flat File Driver Info

 JDBC-ODBC - CREATE TABLE in Flat Text Files

 JDBC-ODBC - Listing Tables with meta.GetTables()

 JDBC-ODBC - Tab Delimited Flat File Data

 JDBC-ODBC - ODBC Configuration for Flat Files

 JDBC-ODBC - Executing Queries on Flat Files

JDBC-ODBC - Missing Flat Data Files

 JDBC-ODBC Bridge Driver - MS Access

 JDBC-ODBC Bridge Driver - MS SQL Server

 Summary of JDBC Drivers and Database Servers

 Using Connection Pool with JDBC

 Archived Tutorials

 References

 Full Version in PDF/EPUB