suncertify.db.tool
Class DataConvToolSwing

java.lang.Object
  |
  +--suncertify.db.tool.DataConvToolSwing

public class DataConvToolSwing

extends java.lang.Object

implements java.awt.event.ActionListener

The class is the Data Conversion tool with a Swing GUI,and it converts the ascii file containing data about a DataBase to a binary file to be used by the Data class object.

Version:

1.0 08/09/1999

Constructor Summary

DataConvToolSwing(javax.swing.JFrame frameArg)
The class constructor.

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e) The actionPerformed method to be called when the "Conversion" button is pressed.
protected void	createHeader() The method creates the "header" of the DataBaseFile.
protected void	getFieldsInfo() The method get the names of the fields and its corresponding Length and stores into two Vectors.
protected void	insertRecords() The method inserts into the "outputDataBaseFile" the dataRecords fetched from the "DataFile".
static void	main(java.lang.String[] args) The main method to create an instance of "DataConvTool" and initiate conversion.
protected void	nameFiles(java.io.File fieldsFile, java.io.File dataFile, java.io.File dbFile) The Method to initialize the Variables for the file names.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataConvToolSwing

public DataConvToolSwing(javax.swing.JFrame frameArg)

The class constructor. It constructs a Swing GUI for accepting Name of Schema files and the DataFile.

Parameters:

frameArg - : A JFrame that contains the main GUI of teh application.

Method Detail

nameFiles

protected void nameFiles(java.io.File fieldsFile,
                         java.io.File dataFile,
                         java.io.File dbFile)
                  throws DataConversionException

The Method to initialize the Variables for the file names. This method is called when the ActionEvent of "Conversion" button id fired.

Parameters:

fieldsFile - : The File Object that represents the "fieldsFile"/ "SchemaFile"

dataFile - : The File Object that represents dataRecords

dbFile - :The File Object that represents the "outputDataBaseFile"

getFieldsInfo

protected void getFieldsInfo()
                      throws DataConversionException

The method get the names of the fields and its corresponding Length and stores into two Vectors.

Throws:

DataConversionException: - if the "fieldsFile" does contain values in the form "fieldName=fieldLength"

createHeader

protected void createHeader()
                     throws DataConversionException

The method creates the "header" of the DataBaseFile. It contains the following information, in order:

• headerLen -- and integer value specifying the length of header block.
• noOfFields -- and integer value specifying the number of fields in the DataBase
• recordCount -- and integer value specifying the number of DataRecords
• "noOfFields" number of pairs of the form (fieldName=fieldLength) where "fieldName" is a UTF string and "fieldLength" is an integral value.
• "0XC0C0BABE" -- separator of the header from the DataRecords.

Throws:

DataConversionException - : whenever an IOException occurs.

insertRecords

protected void insertRecords()
                      throws DataConversionException

The method inserts into the "outputDataBaseFile" the dataRecords fetched from the "DataFile".

Throws:

DataConversionException - : whenever an IOEXception occurs.

main

public static void main(java.lang.String[] args)

The main method to create an instance of "DataConvTool" and initiate conversion.

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

The actionPerformed method to be called when the "Conversion" button is pressed. It gets the name of the files from the corresponding JTextFields and create File objects, which are passed to "nameFiles" method. It does the conversion by calling the "getFieldsInfo", "createHeader" and "insertRecords" methods.

Specified by:

actionPerformed in interface java.awt.event.ActionListener