Package acdp.tools

Class KeyFigures

java.lang.Object

acdp.tools.KeyFigures

public final class KeyFigures
extends Object

Writes to the standard output stream a few key figures of the stores of the tables of a WR database. Knowing these figures, a user can decide to do the following things:

• Compacting the VL or FL file space.
• Changing the values of the table-specific settings nobsRowRef, nobsOutrowPtr and nobsRefCount.

Author:

Beat Hörmann

Method Summary

Modifier and Type	Method	Description
static final void	run(Path layoutFile)	Writes to the standard output stream a few key figures of the stores of the tables of the specified WR database.

Methods inherited from class java.lang.Object

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

Method Details

run

public static final void run(Path layoutFile)
                      throws NullPointerException,
UnsupportedOperationException,
OverlappingFileLockException,
CreationException,
IOFailureException

Writes to the standard output stream a few key figures of the stores of the tables of the specified WR database.

Note that this method fails if the database is not a WR database or if the database is currently open.

Note also that if the given path denotes a valid file path but not of a valid layout file of a WR database then this method may throw an exception that is different from the listed exceptions.

Parameters:

layoutFile - The layout file of the WR database, not allowed to be null.

Throws:

NullPointerException - If layoutFile is null.

UnsupportedOperationException - If the database is an RO database.

OverlappingFileLockException - If the database is currently open.

CreationException - If the database can't be opened due to any other reason.

IOFailureException - If an I/O error occurs.