cgl.narada.event.impl
Class EventPropertiesImpl

java.lang.Object
  cgl.narada.event.impl.EventPropertiesImpl

All Implemented Interfaces:

EventProperties

public class EventPropertiesImpl
extends Object
implements EventProperties

Constructor Summary

protected	EventPropertiesImpl()
protected	EventPropertiesImpl(byte[] propertyBytes)

Method Summary

byte[]	getBytes() Get a byte stream representation of the event header
Object	getLastModifier(Object propertyName) Get the last modifier of a certain property.
Object	getProperty(Object propertyName) Retrieve the value associated with a property.
Enumeration	getPropertyChanges(Object propertyName) Get a list of the changes associated with a mutable property.
Enumeration	getPropertyModifiers(Object propertyName) Gets a list of modifiers on a property.
Enumeration	getPropertyNames() Retrieve the list of property names
Enumeration	getPropertyNamesWithChangeTracking() Retrieve the list of property names with change tracking enabled.
boolean	hasProperties() Check if there are any properties associated with the event
boolean	hasPropertyChangeTracking(Object propertyName) Indicates if property change tracking has been enabled for the property in question.
boolean	isModified() Indicates if the EventProperties has been modified since the last time that it was serialized.
boolean	isMutable(Object propertyName) Check to see if this is a mutable property.
void	setImmutableProperty(Object propertyName, Object property, Object creator) Set an immutable property.
void	setMutableProperty(Object propertyName, Object property, Object modifier) Set a mutable property.
String	toString()
void	trackPropertyChanges(Object propertyName) Track the changes to a specific property.

Methods inherited from class java.lang.Object

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

Constructor Detail

EventPropertiesImpl

protected EventPropertiesImpl()

EventPropertiesImpl

protected EventPropertiesImpl(byte[] propertyBytes)

Method Detail

hasProperties

public boolean hasProperties()

Check if there are any properties associated with the event

Specified by:

hasProperties in interface EventProperties

getPropertyNames

public Enumeration getPropertyNames()

Retrieve the list of property names

Specified by:

getPropertyNames in interface EventProperties

getPropertyNamesWithChangeTracking

public Enumeration getPropertyNamesWithChangeTracking()

Retrieve the list of property names with change tracking enabled. Note that this just returns the list of mutable properties that have change tracking enabled for them.

Specified by:

getPropertyNamesWithChangeTracking in interface EventProperties

getProperty

public Object getProperty(Object propertyName)
                   throws NBEventException

Retrieve the value associated with a property. This method throws an exception if
(a) This propertyName is not a valid one.
(b) The specified propertyName is NULL

Specified by:

getProperty in interface EventProperties

Throws:

NBEventException

setMutableProperty

public void setMutableProperty(Object propertyName,
                               Object property,
                               Object modifier)
                        throws NBEventException

Set a mutable property. This method throws an exception if
(a) This property has been previously defined as a mutable property.
(b) Also neither the property or the property name can be NULL.

Specified by:

setMutableProperty in interface EventProperties

Throws:

NBEventException

setImmutableProperty

public void setImmutableProperty(Object propertyName,
                                 Object property,
                                 Object creator)
                          throws NBEventException

Set an immutable property. This method throws an exception if
(a) This immutable property already exists.
(b) Also neither the property or the property name can be NULL.

Specified by:

setImmutableProperty in interface EventProperties

Throws:

NBEventException

isMutable

public boolean isMutable(Object propertyName)
                  throws NBEventException

Check to see if this is a mutable property. This method throws an exception if
(a) This property does not exist
(a) The specified propetyName is NULL

Specified by:

isMutable in interface EventProperties

Throws:

NBEventException

getLastModifier

public Object getLastModifier(Object propertyName)
                       throws NBEventException

Get the last modifier of a certain property. This method works with both mutable and immutable properties. This method throws an exception if
(a) This property does not exist
(a) The specified propetyName is NULL

Specified by:

getLastModifier in interface EventProperties

Throws:

NBEventException

trackPropertyChanges

public void trackPropertyChanges(Object propertyName)
                          throws NBEventException

Track the changes to a specific property. This method throws an exception if
(a) This is an immutable property
(b) If this property does not exist.
(c) The specified propertyName is NULL

Specified by:

trackPropertyChanges in interface EventProperties

Throws:

NBEventException

hasPropertyChangeTracking

public boolean hasPropertyChangeTracking(Object propertyName)
                                  throws NBEventException

Indicates if property change tracking has been enabled for the property in question. This method throws an exception if
(a) This property does not exist
(b) The specified propertyName is not NULL

Specified by:

hasPropertyChangeTracking in interface EventProperties

Throws:

NBEventException

getPropertyChanges

public Enumeration getPropertyChanges(Object propertyName)
                               throws NBEventException

Get a list of the changes associated with a mutable property. This method throws an exception if
(a) changeTracking was not enabled on this property
(b) The specified property does not exist
(c) The specified propertyName is NULL

Specified by:

getPropertyChanges in interface EventProperties

Throws:

NBEventException

getPropertyModifiers

public Enumeration getPropertyModifiers(Object propertyName)
                                 throws NBEventException

Gets a list of modifiers on a property. This method throws an exception if
(a) changeTracking was not enabled on this property
(b) The specified property does not exist
(c) The specified propertyName is NULL

Specified by:

getPropertyModifiers in interface EventProperties

Throws:

NBEventException

getBytes

public byte[] getBytes()

Get a byte stream representation of the event header

Specified by:

getBytes in interface EventProperties

toString

public String toString()

Overrides:

toString in class Object

isModified

public boolean isModified()

Description copied from interface: EventProperties

Indicates if the EventProperties has been modified since the last time that it was serialized.

Specified by:

isModified in interface EventProperties