org.eclipse.datatools.enablement.ingres.internal.ui.plan
Class QEPLogExtractor

java.lang.Object
  org.eclipse.datatools.enablement.ingres.internal.ui.plan.QEPLogExtractor

public final class QEPLogExtractor
extends java.lang.Object

This class is responsible for extracting QEP's from the Ingres JDBC driver's logfile. It watches the log file that is defined in the system property "ingres.jdbc.trace.log".

Author:

enrico.schenk@ingres.com

Method Summary

java.lang.String[]	extractLastQEP() Reads the log file to the last line and returns the last QEP found.
static QEPLogExtractor	getInstance()
void	skipAll() Reads to the end of the file, without retrieving a QEP.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static QEPLogExtractor getInstance()

skipAll

public void skipAll()
             throws java.io.IOException

Reads to the end of the file, without retrieving a QEP.

Throws:

java.io.IOException

extractLastQEP

public java.lang.String[] extractLastQEP()
                                  throws java.io.IOException

Reads the log file to the last line and returns the last QEP found.

Returns:

String array containing the lines of the QEP. Empty if no QEP was found.

Throws:

java.io.IOException