com.asakusafw.vocabulary.flow.graph

Class PortConnection

java.lang.Object

com.asakusafw.vocabulary.flow.graph.PortConnection

public final class PortConnection
extends Object

Represents a connection between FlowElementPorts.

Method Summary

Modifier and Type	Method and Description
static void	connect(FlowElementOutput upstream, FlowElementInput downstream) Connects between the two ports.
void	disconnect() Disposes this connection.
FlowElementInput	getDownstream() Returns the downstream port.
FlowElementOutput	getUpstream() Returns the upstream port.
boolean	isValid() Returns whether this connection is valid or not.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

connect

public static void connect(FlowElementOutput upstream,
                           FlowElementInput downstream)

Connects between the two ports.

Parameters:

upstream - the upstream port

downstream - the downstream port

Throws:

IllegalArgumentException - if the data type is not consistent, or some parameters are null

disconnect

public void disconnect()

Disposes this connection. If this has been already disposed, this method will have no effects.

isValid

public boolean isValid()

Returns whether this connection is valid or not.

Returns:

true if this connection is valid, or false if this is disposed

getUpstream

public FlowElementOutput getUpstream()

Returns the upstream port.

Returns:

the upstream port

getDownstream

public FlowElementInput getDownstream()

Returns the downstream port.

Returns:

the downstream port

toString

public String toString()

Overrides:

toString in class Object