FeatureManager
Class WindsurfFeatureManagerTxt

java.lang.Object
  FeatureManager.FeatureManager
      FeatureManager.WindsurfFeatureManagerTxt

public class WindsurfFeatureManagerTxt
extends FeatureManager

Implements the text-based Feature Manager for Windsurf.

Field Summary

Fields inherited from class FeatureManager.FeatureManager

time

Constructor Summary

WindsurfFeatureManagerTxt(java.lang.String filename)
Basic constructor.

Method Summary

void	closeConnection() Closes the connection to the features file.
void	closeScan() Closes a sequential scan over image features.
void	createConnection() Connects to the features file.
void	createScan() Creates a sequential scan over image features.
protected Image	loadFeatures(ImageID id) Loads the features of an image from the features file given the image ID.
protected Image	loadFeaturesNext() Loads the features of the next image from the features file.
ImageID	nextID() Returns an image ID for a new image.
protected boolean	saveFeatures(Image image) Saves the features of a given image in the features file.

Methods inherited from class FeatureManager.FeatureManager

contains, getTime, load, loadNext, resetTime, save

Methods inherited from class java.lang.Object

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

Constructor Detail

WindsurfFeatureManagerTxt

public WindsurfFeatureManagerTxt(java.lang.String filename)

Basic constructor.

Parameters:

filename - The name for the features file.

Method Detail

createConnection

public void createConnection()

Connects to the features file.

Specified by:

createConnection in class FeatureManager

closeConnection

public void closeConnection()

Closes the connection to the features file.

Specified by:

closeConnection in class FeatureManager

saveFeatures

protected boolean saveFeatures(Image image)

Saves the features of a given image in the features file.

Specified by:

saveFeatures in class FeatureManager

Parameters:

image - Image whose features are to be saved.

Returns:

true if the features have been successfully saved, false otherwise.

loadFeatures

protected Image loadFeatures(ImageID id)

Loads the features of an image from the features file given the image ID.

Specified by:

loadFeatures in class FeatureManager

Parameters:

id - ID of the image to be loaded.

Returns:

Image object containing loaded features (null if no such image exists).

createScan

public void createScan()

Creates a sequential scan over image features.

Specified by:

createScan in class FeatureManager

closeScan

public void closeScan()

Closes a sequential scan over image features.

Specified by:

closeScan in class FeatureManager

loadFeaturesNext

protected Image loadFeaturesNext()

Loads the features of the next image from the features file.

Specified by:

loadFeaturesNext in class FeatureManager

Returns:

Image object containing loaded features (null if no next image exists).

nextID

public ImageID nextID()

Returns an image ID for a new image.

Specified by:

nextID in class FeatureManager

Returns:

ImageIDnumerical object not associated to any DB image.