Package hec.io.dbf

Class AbstractDBaseUpdate

java.lang.Object

hec.io.dbf.AbstractDBaseUpdate

All Implemented Interfaces:

DBaseUpdate

Direct Known Subclasses:

DBaseIVMemoUpdate

public abstract class AbstractDBaseUpdate
extends Object
implements DBaseUpdate

This is an abstract class that defines methods and constants that are genderica to all xBase class of database files. This includes (DBase). At the bottom is the layout of the header.

Field Summary

Fields

Modifier and Type	Field	Description
protected DBFFieldDescriptor[]	_fdList
protected DBFHeader	_header

Constructor Summary

Constructors

Constructor	Description
AbstractDBaseUpdate(File newFile, File oldFile, boolean[] columsToRemove, boolean[] columnsToAdd, boolean[] columnsToResize, DBFFieldDescriptor[] fdList)

Method Summary

Modifier and Type	Method	Description
protected boolean	readHeader()	This method reads the header of the database file into the internal header object
boolean	runUpdate()	Runs the update which copies the files, adding and removing columns as it needs.

Methods inherited from class java.lang.Object

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

Field Details

_fdList

protected DBFFieldDescriptor[] _fdList

_header

protected DBFHeader _header

Constructor Details

AbstractDBaseUpdate

public AbstractDBaseUpdate(File newFile,
 File oldFile,
 boolean[] columsToRemove,
 boolean[] columnsToAdd,
 boolean[] columnsToResize,
 DBFFieldDescriptor[] fdList)

Method Details

runUpdate

public boolean runUpdate()

Runs the update which copies the files, adding and removing columns as it needs.

Specified by:

runUpdate in interface DBaseUpdate

readHeader

protected boolean readHeader()

This method reads the header of the database file into the internal header object