examples.postcard
Class PostcardServiceImpl

java.lang.Object
  de.fhg.igd.semoa.service.AbstractService
      examples.postcard.PostcardServiceImpl

All Implemented Interfaces:

PostcardService, Service

public class PostcardServiceImpl

extends AbstractService

implements PostcardService

Author:

Ulrich Pinsdorf

Field Summary

private int	BUF_SIZE The size of the buffer used to load images.
private BufferedImage	image_ The postcard image of this service.
private String	location_ The host location.
private String	url_ The unique host URL.

Fields inherited from class de.fhg.igd.semoa.service.AbstractService

REV_POSTFIX, REV_PREFIX

Fields inherited from interface examples.postcard.PostcardService

PUBLISH_KEY

Constructor Summary

PostcardServiceImpl()
Construtor.

Method Summary

String	author() Returns the name of the author of the service.
private void	debug(Object debugInfo)
Postcard	getPostcard() Retrieves an image which is stamped with the agent's name, the server URL, the owners name and a time stamp.
Postcard	getPostcard(BufferedImage image) Stamps the given image as described at getPostcard() getPostcard.
String	info() Returns the informative string which should describe the service's essence in a sentence.
String	revision() Returns the revision number of this class as a string.
void	setImage(File f) Allows to read the image to be used as postcard from a file.

Methods inherited from class de.fhg.igd.semoa.service.AbstractService

checkDependencies, dependencies, docs, doPrivileged, doPrivileged, getACC, getEnvironment, majorVersion, minorVersion, toString

Methods inherited from class java.lang.Object

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

Field Detail

image_

private BufferedImage image_

The postcard image of this service.

url_

private String url_

The unique host URL.

location_

private String location_

The host location.

BUF_SIZE

private final int BUF_SIZE

The size of the buffer used to load images.

See Also:

Constant Field Values

Constructor Detail

PostcardServiceImpl

public PostcardServiceImpl()

Construtor. The image is per default initialized with a white picture.

Method Detail

getPostcard

public Postcard getPostcard()

Description copied from interface: PostcardService

Retrieves an image which is stamped with the agent's name, the server URL, the owners name and a time stamp. The information will be retrieved from the agent itself. The image should be a picture of a local point of interest or a photo of the server machine.

Specified by:

getPostcard in interface PostcardService

Returns:

the stamped image

getPostcard

public Postcard getPostcard(BufferedImage image)

Description copied from interface: PostcardService

Stamps the given image as described at getPostcard() getPostcard.

Specified by:

getPostcard in interface PostcardService

Returns:

the stamped image

author

public String author()

Description copied from class: AbstractService

Returns the name of the author of the service. The format to be used should be John Doe <jdoe@zilch.net>.

Specified by:

author in interface Service

Specified by:

author in class AbstractService

Returns:

the String with the author's name.

revision

public String revision()

Description copied from class: AbstractService

Returns the revision number of this class as a string. This class provides default implementations of methods majorVersion(), minorVersion based on the assumption that this method returns a revision string as generated by rcs(1) for the template "$Revision: 1.7 $/$Date: 2007-08-08 04:41:53 +0200 (Wed, 08 Aug 2007) $".

Specified by:

revision in class AbstractService

info

public String info()

Description copied from class: AbstractService

Returns the informative string which should describe the service's essence in a sentence.

Specified by:

info in interface Service

Specified by:

info in class AbstractService

Returns:

the String with the service's short description.

setImage

public void setImage(File f)

Allows to read the image to be used as postcard from a file. The method is not intended to be used by an agent, but to initialze the service at startup time. Therefor it does not occur in PostcardService.

Parameters:

f - the file containing an image

Throws:

IOException - when the file could not be read

debug

private void debug(Object debugInfo)