com.partnersoft.v3x.graphics.codec.shapeFile
Class SHXFile

java.lang.Object
  com.partnersoft.v3x.io.formats.ObjectDatafile
      com.partnersoft.v3x.graphics.codec.shapeFile.SHXFile

public class SHXFile
extends ObjectDatafile

a shx file. simply an index into the shp file

Constructor Summary

SHXFile(java.lang.String filename)

Method Summary

DoubleRectangle	getExtents()
java.io.RandomAccessFile	getFile() If you just have to bang on the file, use this.
int	getNumberOfRecords()
int	getRecordType()
protected void	readRecordImp(java.lang.Object recycleMe, java.io.RandomAccessFile filet) Subclasses must override this to read an object from the fixed-length format, given an object to put the results into.
protected java.lang.Object	readRecordImp(java.io.RandomAccessFile filet) Subclasses must override this to read an object from the fixed-length format.
void	setExtents(DoubleRectangle dr)
void	setNumberOfRecords(int newNumber)
void	setRecordType(int newType)
void	updateHeader(int newNumberOfRecords, DoubleRectangle extents, java.io.RandomAccessFile filet) this will update the record length and extents
void	writeHeader()
protected void	writeHeaderImp(java.lang.Object header, java.io.RandomAccessFile filet) Override this if you want it to do anything.
protected void	writeRecordImp(java.lang.Object source, java.io.RandomAccessFile filet) Subclasses must override this to write out the object in the desired form.

Methods inherited from class com.partnersoft.v3x.io.formats.ObjectDatafile

appendRecord, clear, close, compare, compare, compareImp, compareImp, findClosest, getHeaderSize, getRecordSize, getSize, openRead, openWrite, readHeader, readHeaderImp, readKey, readKeyImp, readRecord, readRecord, search, setHeaderSize, setRecordSize, sort, writeHeader, writeRecord

Methods inherited from class java.lang.Object

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

Constructor Detail

SHXFile

public SHXFile(java.lang.String filename)

Method Detail

getFile

public java.io.RandomAccessFile getFile()

Description copied from class: ObjectDatafile

If you just have to bang on the file, use this. Be careful, dammit!

Overrides:

getFile in class ObjectDatafile

writeRecordImp

protected void writeRecordImp(java.lang.Object source,
                              java.io.RandomAccessFile filet)
                       throws java.io.IOException

Description copied from class: ObjectDatafile

Subclasses must override this to write out the object in the desired form. The RandomAccessFile is advanced to the correct spot; just write away.

Specified by:

writeRecordImp in class ObjectDatafile

Throws:

java.io.IOException

readRecordImp

protected java.lang.Object readRecordImp(java.io.RandomAccessFile filet)

Description copied from class: ObjectDatafile

Subclasses must override this to read an object from the fixed-length format. The RandomAccessFile is advanced to the correct spot; just read away.

Specified by:

readRecordImp in class ObjectDatafile

readRecordImp

protected void readRecordImp(java.lang.Object recycleMe,
                             java.io.RandomAccessFile filet)

Description copied from class: ObjectDatafile

Subclasses must override this to read an object from the fixed-length format, given an object to put the results into. Quite often, for speed, you don't want to create objects, but reuse them instead. This allows you to do that.

The RandomAccessFile is advanced to the correct spot; just read away.

Specified by:

readRecordImp in class ObjectDatafile

writeHeader

public void writeHeader()
                 throws java.io.IOException

Throws:

java.io.IOException

writeHeaderImp

protected void writeHeaderImp(java.lang.Object header,
                              java.io.RandomAccessFile filet)
                       throws java.io.IOException

Description copied from class: ObjectDatafile

Override this if you want it to do anything. Be sure to set your header size!

Overrides:

writeHeaderImp in class ObjectDatafile

Throws:

java.io.IOException

updateHeader

public void updateHeader(int newNumberOfRecords,
                         DoubleRectangle extents,
                         java.io.RandomAccessFile filet)

this will update the record length and extents

setExtents

public void setExtents(DoubleRectangle dr)

getExtents

public DoubleRectangle getExtents()

setNumberOfRecords

public void setNumberOfRecords(int newNumber)

getNumberOfRecords

public int getNumberOfRecords()

setRecordType

public void setRecordType(int newType)

getRecordType

public int getRecordType()