com.topologi.diffx.event.impl
Class AttributeEventImpl

java.lang.Object
  extended bycom.topologi.diffx.event.impl.DiffXEventBase
      extended bycom.topologi.diffx.event.impl.AttributeEventImpl
All Implemented Interfaces:
AttributeEvent, DiffXEvent, XMLFormattable, XMLWritable

public final class AttributeEventImpl
extends com.topologi.diffx.event.impl.DiffXEventBase
implements AttributeEvent

A basic implementation of the attribute event.

This implementation is not namespace aware.

Version:
3 April 2005
Author:
Christophe Lauret, Jean-Baptiste Reure

Constructor Summary
AttributeEventImpl(String name, String value)
          Creates a new attribute event.
 
Method Summary
 boolean equals(DiffXEvent e)
          Returns true if the event is a
 boolean equals(Object o)
          Invokes the DiffXEvent.equals(DiffXEvent) method if the specified object if not null and is an instance of DiffXEvent.
 String getName()
          Returns the local name of the attribute.
 String getURI()
          Always return null.
 String getValue()
          Returns the value of the attribute.
 int getWeight()
          Returns the weight of this event.
 int hashCode()
           
 void setWeight(int weight)
          Sets the weight of this event.
 String toString()
           
 String toXML()
          Returns a xml representation of the object of the implementing class.
 StringBuffer toXML(StringBuffer xml)
          Appends the XML representation of the object of the implementing class.
 void toXML(XMLWriter xml)
          Writes the XML representation of the implementing instance using the specified XMLWriter.
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface com.topologi.diffx.event.DiffXEvent
getWeight, setWeight
 
Methods inherited from interface com.topologi.diffx.xml.XMLFormattable
toXML
 

Constructor Detail

AttributeEventImpl

public AttributeEventImpl(String name,
                          String value)
                   throws NullPointerException
Creates a new attribute event.

Parameters:
name - The local name of the attribute.
value - The value of the attribute.
Throws:
NullPointerException - if any of the argument is null.
Method Detail

getName

public String getName()
Description copied from interface: AttributeEvent
Returns the local name of the attribute.

This method should never return null.

Specified by:
getName in interface AttributeEvent
Returns:
The local name of the attribute.
See Also:
AttributeEvent.getName()

getURI

public String getURI()
Always return null.

Specified by:
getURI in interface AttributeEvent
Returns:
The namespace URI the attribute belongs to or null.
See Also:
AttributeEvent.getURI()

getValue

public String getValue()
Description copied from interface: AttributeEvent
Returns the value of the attribute.

This method should never return null.

Specified by:
getValue in interface AttributeEvent
Returns:
The value of the attribute.
See Also:
AttributeEvent.getValue()

hashCode

public int hashCode()
See Also:
Object.hashCode()

equals

public boolean equals(DiffXEvent e)
Returns true if the event is a

Specified by:
equals in interface DiffXEvent
Parameters:
e - The event to compare with this event.
Returns:
true if this event is equal to the specified event; false otherwise.
See Also:
DiffXEvent.equals(DiffXEvent)

toString

public String toString()
See Also:
Object.toString()

toXML

public void toXML(XMLWriter xml)
           throws IOException
Description copied from interface: XMLWritable
Writes the XML representation of the implementing instance using the specified XMLWriter.

Specified by:
toXML in interface XMLWritable
Parameters:
xml - The XMLWriter to use.
Throws:
IOException - IF an I/O exception occurs whilst writing.
See Also:
XMLWritable.toXML(com.topologi.diffx.xml.XMLWriter)

toXML

public StringBuffer toXML(StringBuffer xml)
                   throws NullPointerException
Description copied from interface: XMLFormattable
Appends the XML representation of the object of the implementing class.

Implementations must ensure that the returned string buffer is the same object as the specified string buffer.

Specified by:
toXML in interface XMLFormattable
Parameters:
xml - The string buffer to which the XML representation is appended to.
Returns:
The modified string buffer.
Throws:
NullPointerException - if the specified character sequence is null.
See Also:
XMLWritable.toXML(com.topologi.diffx.xml.XMLWriter)

equals

public final boolean equals(Object o)
Invokes the DiffXEvent.equals(DiffXEvent) method if the specified object if not null and is an instance of DiffXEvent.

Parameters:
o - The object to compare.
Returns:
true if the specified object is equal; false otherwise.

toXML

public String toXML()
Description copied from interface: XMLFormattable

Returns a xml representation of the object of the implementing class.

Most implementation should use the following code to ensure consistent data with the other toXML method:

return this.toXML(new StringBuffer()).toString();

Specified by:
toXML in interface XMLFormattable
Returns:
a XML representation of the object of the implementing class.
See Also:
XMLFormattable.toXML()

getWeight

public int getWeight()
Description copied from interface: DiffXEvent
Returns the weight of this event.

The default weight should be 1.

Specified by:
getWeight in interface DiffXEvent
Returns:
The weight of this event.
See Also:
DiffXEvent.getWeight()

setWeight

public void setWeight(int weight)
Description copied from interface: DiffXEvent
Sets the weight of this event.

This method is intended for use by algorithms, optimisers and loaders in order to adjust the importance of an event.

Specified by:
setWeight in interface DiffXEvent
Parameters:
weight - The weight of this event.
See Also:
DiffXEvent.setWeight(int)