org.evolvica.engine
Class Connection

java.lang.Object
  org.evolvica.engine.Connection

All Implemented Interfaces:

IConnection

public class Connection

extends java.lang.Object

implements IConnection

Default implementation for a connection.

Since:

0.4.0

Version:

$Revision: 1.5 $ $Date: 2004/05/26 11:58:22 $

Author:

Andreas Rummler

Field Summary

protected java.lang.Object	data The stored data object.
protected IElement	source The source element.
protected IElement	target The target element.

Constructor Summary

Connection(IElement source, IElement target)
Constructor.

Method Summary

void	addPropertyChangeListener(java.beans.PropertyChangeListener listener)
void	firePropertyChangeEvent(java.beans.PropertyChangeEvent event)
java.lang.Object	getData() Retrieves a data object from this connection without removing it.
IElement	getSource() Returns the source element of this connection.
IElement	getTarget() Returns the target element of this connection.
boolean	hasData() Checks if there is a data object associated to this connection.
java.lang.Object	popData() Retrieves a data object from this connection.
void	pushData(java.lang.Object data) Pushes a data object into this connection.
void	removePropertyChangeListener(java.beans.PropertyChangeListener listener)
void	setSource(IElement source) Sets a new source element.
void	setTarget(IElement target) Sets a new target element.

Methods inherited from class java.lang.Object

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

Field Detail

source

protected IElement source

The source element.

target

protected IElement target

The target element.

data

protected java.lang.Object data

The stored data object.

Constructor Detail

Connection

public Connection(IElement source,
                  IElement target)

Constructor.

Parameters:

source - source element

target - target element

Method Detail

getSource

public IElement getSource()

Description copied from interface: IConnection

Returns the source element of this connection.

Specified by:

getSource in interface IConnection

Returns:

source element

See Also:

IConnection.getSource()

setSource

public void setSource(IElement source)

Description copied from interface: IConnection

Sets a new source element.

Specified by:

setSource in interface IConnection

Parameters:

source - new source element

See Also:

IConnection.setSource(org.evolvica.engine.IElement)

getTarget

public IElement getTarget()

Description copied from interface: IConnection

Returns the target element of this connection.

Specified by:

getTarget in interface IConnection

Returns:

target element

See Also:

IConnection.getTarget()

setTarget

public void setTarget(IElement target)

Description copied from interface: IConnection

Sets a new target element.

Specified by:

setTarget in interface IConnection

Parameters:

target - new target element

See Also:

IConnection.setTarget(org.evolvica.engine.IElement)

pushData

public void pushData(java.lang.Object data)

Description copied from interface: IConnection

Pushes a data object into this connection.

Specified by:

pushData in interface IConnection

Parameters:

data - data object

See Also:

IConnection.pushData(java.lang.Object)

hasData

public boolean hasData()

Description copied from interface: IConnection

Checks if there is a data object associated to this connection.

Specified by:

hasData in interface IConnection

Returns:

true if this connection contains some data object, false instead

See Also:

IConnection.hasData()

popData

public java.lang.Object popData()

Description copied from interface: IConnection

Retrieves a data object from this connection. The object is returned and removed from this connection.

Specified by:

popData in interface IConnection

Returns:

data object stored in this connection

See Also:

IConnection.popData()

getData

public java.lang.Object getData()

Description copied from interface: IConnection

Retrieves a data object from this connection without removing it.

Specified by:

getData in interface IConnection

Returns:

data object stored in this connection

See Also:

IConnection.getData()

addPropertyChangeListener

public void addPropertyChangeListener(java.beans.PropertyChangeListener listener)

Specified by:

addPropertyChangeListener in interface IConnection

removePropertyChangeListener

public void removePropertyChangeListener(java.beans.PropertyChangeListener listener)

Specified by:

removePropertyChangeListener in interface IConnection

firePropertyChangeEvent

public void firePropertyChangeEvent(java.beans.PropertyChangeEvent event)

Specified by:

firePropertyChangeEvent in interface IConnection