Class PlanExporter

java.lang.Object

org.apache.derby.tools.PlanExporter

public class PlanExporter
extends Object

This class is the main entry point to the tool Graphical Query Explainer.

Field Summary

Fields

Modifier and Type	Field	Description
private static String	dbURL
private static final int	HTML
private static final LocalizedResource	LOC_RES
private static final int	XML
private static final int	XSL
private static String	xslStyleSheetName

Constructor Summary

Constructors

Constructor	Description
PlanExporter()

Method Summary

Modifier and Type	Method	Description
private static void	deleteFile(String fileName)
private static void	generateHTML(String arg, String path, String style, boolean def)
private static void	generateXML(AccessDatabase access, String arg, String stmt, String time, String xsl)
static void	main(String[] args)
private static void	printHelp()
private static int	selectArg(String arg)	Reading the user's option

Methods inherited from class Object

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

Field Details

dbURL

private static String dbURL

xslStyleSheetName

private static String xslStyleSheetName

XML

private static final int XML

See Also:

• Constant Field Values

HTML

private static final int HTML

See Also:

• Constant Field Values

XSL

private static final int XSL

See Also:

• Constant Field Values

LOC_RES

private static final LocalizedResource LOC_RES

Constructor Details

PlanExporter

public PlanExporter()

Method Details

main

public static void main(String[] args)

Parameters:

args - 1) database URL eg: jdbc:derby:myDB --------- 2) database schema ----------------------------- 3) statement ID (36 characters) ---------------- and user specified arguments.

selectArg

private static int selectArg(String arg)

Reading the user's option

Parameters:

arg - user's option

Returns:

the argument type

generateXML

private static void generateXML(AccessDatabase access,
 String arg,
 String stmt,
 String time,
 String xsl)
                         throws IOException

Parameters:

access - instance of AccessDatabase class

arg - path of XML

stmt - statement executed

time - time which the statement was executed

xsl - name of the style sheet

Throws:

IOException - if an error occurs when writing the XML file

generateHTML

private static void generateHTML(String arg,
 String path,
 String style,
 boolean def)
                          throws Exception

Parameters:

arg - path to xml

path - path of HTML

style - path to xsl

def - whether the default xsl or not

Throws:

Exception

printHelp

private static void printHelp()

deleteFile

private static void deleteFile(String fileName)