com.highqsoft.fwk

Class FwkColumnDataObserver

java.lang.Object

com.highqsoft.fwk.FwkColumnDataObserver

All Implemented Interfaces:

FwkColumnDataObserverInterface, javax.infobus.DataItemChangeManager

Direct Known Subclasses:

ERGDataObserver, FwkColumnDataObserverByte, FwkColumnDataObserverDate, FwkColumnDataObserverDouble, FwkColumnDataObserverDoubleImplicit, FwkColumnDataObserverFloat, FwkColumnDataObserverInt, FwkColumnDataObserverLong, FwkColumnDataObserverShort, FwkColumnScaledDataObserver, FwkImplicitColumnDataObserver, RpcIIIColumnAccess.FwkObserver

public abstract class FwkColumnDataObserver
extends java.lang.Object
implements FwkColumnDataObserverInterface

The FwkColumnDataObserver defines the basic functionality of a column data observer object.

Since:

$Date: 2017/04/06 13:28:57 $

Version:

$Revision: 1.15 $

Author:

Andreas Hofmann

Field Summary

Fields

Modifier and Type	Field and Description
protected javax.infobus.DataItemChangeManagerSupport	changeManager The change manager.
protected short[]	flags
protected short	globalFlag
protected boolean	globalFlagValid
protected boolean	suspended

Constructor Summary

Constructors

Constructor and Description
FwkColumnDataObserver() The constructor.
FwkColumnDataObserver(double[] scale) The constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	addDataItemChangeListener(javax.infobus.DataItemChangeListener listener) Add a data item change listener.
static double[]	createScale() Create the default scaling vector.
short	getFlagAt(int index) Get a data flag.
double[]	getScale() Get the scaling.
boolean	isChangeManagerSuspended() Get a boolean whether the change manager is suspended.
boolean	isImplicit() Return a boolean whether the data is implicit defined.
void	release() Request to release data.
void	removeDataItemChangeListener(javax.infobus.DataItemChangeListener listener) Remove a data item change listener.
void	setFlagAt(int index, short flag) Set a flag
void	setScale(double[] scale) Set the scaling.
void	suspendChangeManager(boolean flag) Suspend the change manager fire mechanismn.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.highqsoft.interfaces.fwk.FwkColumnDataObserverInterface

getCount, getNativeDatatype, getNativeValues, getNativeValues, getValueAt, setValueAt

Field Detail

changeManager

protected transient javax.infobus.DataItemChangeManagerSupport changeManager

The change manager. Use this instance to fire data item change events.

flags

protected short[] flags

suspended

protected boolean suspended

globalFlag

protected short globalFlag

globalFlagValid

protected boolean globalFlagValid

Constructor Detail

FwkColumnDataObserver

public FwkColumnDataObserver()

The constructor.

FwkColumnDataObserver

public FwkColumnDataObserver(double[] scale)

The constructor.

Parameters:

the - scaling.

Method Detail

createScale

public static double[] createScale()

Create the default scaling vector.

Returns:

the default scaling

setScale

public void setScale(double[] scale)

Set the scaling. Up to three parameter are currently possible.
result = (scale[0]+scale[1]*value)*scale[2];

Specified by:

setScale in interface FwkColumnDataObserverInterface

Parameters:

scale - an double array containing the scaling.

getScale

public double[] getScale()

Get the scaling.

Specified by:

getScale in interface FwkColumnDataObserverInterface

Returns:

an double array containing the scaling.

release

public void release()

Request to release data.

Specified by:

release in interface FwkColumnDataObserverInterface

getFlagAt

public short getFlagAt(int index)

Get a data flag.

Specified by:

getFlagAt in interface FwkColumnDataObserverInterface

Parameters:

index - The index of the flag.

Returns:

the flag.

See Also:

FwkColumnAccessInterface

setFlagAt

public void setFlagAt(int index,
             short flag)

Set a flag

Specified by:

setFlagAt in interface FwkColumnDataObserverInterface

Parameters:

index - the index of the flag to changed.

flag - the new flag.

See Also:

FwkColumnAccessInterface

isImplicit

public boolean isImplicit()

Return a boolean whether the data is implicit defined.

Specified by:

isImplicit in interface FwkColumnDataObserverInterface

Returns:

true if the data is implicit defined.

suspendChangeManager

public void suspendChangeManager(boolean flag)

Suspend the change manager fire mechanismn.

Specified by:

suspendChangeManager in interface FwkColumnDataObserverInterface

Parameters:

flag - if true the manager doesn' t send messages.

isChangeManagerSuspended

public boolean isChangeManagerSuspended()

Get a boolean whether the change manager is suspended.

Specified by:

isChangeManagerSuspended in interface FwkColumnDataObserverInterface

Returns:

true if change manager is suspended.

addDataItemChangeListener

public void addDataItemChangeListener(javax.infobus.DataItemChangeListener listener)

Add a data item change listener.

Specified by:

addDataItemChangeListener in interface javax.infobus.DataItemChangeManager

Parameters:

listener - The listener.

removeDataItemChangeListener

public void removeDataItemChangeListener(javax.infobus.DataItemChangeListener listener)

Remove a data item change listener.

Specified by:

removeDataItemChangeListener in interface javax.infobus.DataItemChangeManager

Parameters:

listener - the listener to be removed.