equip.data.beans
Class PropertyPublisherBean

java.lang.Object
  java.beans.beancontext.BeanContextChildSupport
      equip.data.beans.PropertyPublisherBean

All Implemented Interfaces:

java.beans.beancontext.BeanContextChild, java.beans.beancontext.BeanContextServiceRevokedListener, java.beans.beancontext.BeanContextServicesListener, java.util.EventListener, java.beans.PropertyChangeListener, java.io.Serializable

public class PropertyPublisherBean

extends java.beans.beancontext.BeanContextChildSupport

implements java.beans.PropertyChangeListener

generic property publisher. monitors a bean property and publishes it as a Tuple in a dataspace. PropertyPublisherBean publishes a data item of class equip.data.Tuple with two fields. The first is a equip.data.StringBox with the nominal class name of the tuple, and the second is the property value itself (if a subclass of equip.runtime.ValueBase) or an equip.data.SerializedObject (if the property value is serializable). The name of the item (field of equip.data.ItemData) is also set by configuration to identify individual data items. The GUID is arbitrary and allocated on creation. to be active we require: - a dataspace to publish to (reference to equip.data.beans.DataspaceBean) - a source bean reference (java.lang.Object) - name of property to publish (String) - name to use for data item (String) - nominal tuple class name (String)

See Also:

Serialized Form

Field Summary

boolean	debug debug
protected DataspaceBean	mDataspace dataspace
protected boolean	mIsConnected active/connected
protected java.lang.String	mItemClassName item class name
protected GUID	mItemId dataspace item id
protected java.lang.String	mItemName item name
protected java.lang.String	mPropertyName source property name
protected java.lang.Object	mSource source as object
protected java.lang.Object	mValue last value

Fields inherited from class java.beans.beancontext.BeanContextChildSupport

beanContext, beanContextChildPeer, pcSupport, rejectedSetBCOnce, vcSupport

Constructor Summary

PropertyPublisherBean()
no-arg constructor - required

Method Summary

protected ItemData	encodePropertyValue(java.lang.Object value) overridable type conversion of property value
void	firePropertyChange(java.lang.String propertyName, java.lang.Object oldValue, java.lang.Object newValue) fire property changed
DataspaceBean	getDataspace() source getter
boolean	getDebug()
java.lang.String	getItemClassName() item name getter
java.lang.String	getItemName() item name getter
java.lang.String	getPropertyName() property name getter
java.lang.Object	getSource() source getter
void	propertyChange(java.beans.PropertyChangeEvent evt) property change event
void	setDataspace(DataspaceBean dataspace) dataspace setter - initialisation time only
void	setDebug(boolean d)
void	setItemClassName(java.lang.String itemClassName) item class name setter - initialisation time only
void	setItemName(java.lang.String itemName) item name setter - initialisation time only
void	setPropertyName(java.lang.String propertyName) property name setter - initialisation time only
void	setSource(java.lang.Object source) source setter - initialisation time only

Methods inherited from class java.beans.beancontext.BeanContextChildSupport

addPropertyChangeListener, addVetoableChangeListener, fireVetoableChange, getBeanContext, getBeanContextChildPeer, initializeBeanContextResources, isDelegated, releaseBeanContextResources, removePropertyChangeListener, removeVetoableChangeListener, serviceAvailable, serviceRevoked, setBeanContext, validatePendingSetBeanContext

Methods inherited from class java.lang.Object

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

Field Detail

debug

public boolean debug

debug

mValue

protected java.lang.Object mValue

last value

mSource

protected java.lang.Object mSource

source as object

mPropertyName

protected java.lang.String mPropertyName

source property name

mDataspace

protected DataspaceBean mDataspace

dataspace

mItemName

protected java.lang.String mItemName

item name

mItemClassName

protected java.lang.String mItemClassName

item class name

mIsConnected

protected boolean mIsConnected

active/connected

mItemId

protected GUID mItemId

dataspace item id

Constructor Detail

PropertyPublisherBean

public PropertyPublisherBean()

no-arg constructor - required

Method Detail

setDebug

public void setDebug(boolean d)

getDebug

public boolean getDebug()

firePropertyChange

public void firePropertyChange(java.lang.String propertyName,
                               java.lang.Object oldValue,
                               java.lang.Object newValue)

fire property changed

setSource

public void setSource(java.lang.Object source)

source setter - initialisation time only

getSource

public java.lang.Object getSource()

source getter

setPropertyName

public void setPropertyName(java.lang.String propertyName)

property name setter - initialisation time only

getPropertyName

public java.lang.String getPropertyName()

property name getter

setItemName

public void setItemName(java.lang.String itemName)

item name setter - initialisation time only

getItemName

public java.lang.String getItemName()

item name getter

setItemClassName

public void setItemClassName(java.lang.String itemClassName)

item class name setter - initialisation time only

getItemClassName

public java.lang.String getItemClassName()

item name getter

setDataspace

public void setDataspace(DataspaceBean dataspace)

dataspace setter - initialisation time only

getDataspace

public DataspaceBean getDataspace()

source getter

propertyChange

public void propertyChange(java.beans.PropertyChangeEvent evt)

property change event

Specified by:

propertyChange in interface java.beans.PropertyChangeListener

encodePropertyValue

protected ItemData encodePropertyValue(java.lang.Object value)
                                throws java.io.IOException

overridable type conversion of property value

Throws:

java.io.IOException