org.geotools.data.shapefile
Class Lock

java.lang.Object
  org.geotools.data.shapefile.Lock

public class Lock

extends java.lang.Object

A read-write lock for shapefiles so that OS file locking exceptions will not ruin an attempt to update a shapefile. On windows there are often operating system locking conflicts when writing to a shapefile. In order to not have exceptions thrown everytime a write is made, geotools has implemented file locking for shapefiles.

Author:

jeichar

Constructor Summary

Lock()

Method Summary

void	lockRead() Called by shapefileReader before a read is started and before an IOStream is openned.
void	lockWrite() Called by ShapefileDataStore before a write is started and before an IOStream is openned.
void	unlockRead() Called by ShapefileReader after a read is complete and after the IOStream is closed.
void	unlockWrite()

Methods inherited from class java.lang.Object

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

Constructor Detail

Lock

public Lock()

Method Detail

lockRead

public void lockRead()
              throws java.io.IOException

Called by shapefileReader before a read is started and before an IOStream is openned.

Throws:

java.io.IOException

unlockRead

public void unlockRead()

Called by ShapefileReader after a read is complete and after the IOStream is closed.

lockWrite

public void lockWrite()
               throws java.io.IOException

Called by ShapefileDataStore before a write is started and before an IOStream is openned.

Throws:

java.io.IOException

unlockWrite

public void unlockWrite()