org.fosstrak.ale.server.readers
Class CompositeReader

java.lang.Object
  java.util.Observable
      org.fosstrak.ale.server.readers.LogicalReader
          org.fosstrak.ale.server.readers.CompositeReader

All Implemented Interfaces:

java.util.Observer

public class CompositeReader
extends LogicalReader
implements java.util.Observer

represents a compositeReader that is a composition of different logicalreaders.

Author:

sawielan

Field Summary

Fields inherited from class org.fosstrak.ale.server.readers.LogicalReader

logicalReaderProperties, logicalReaderSpec, properties, readerName, started

Constructor Summary

CompositeReader()
constructor for the composite reader.

Method Summary

void	addReader(LogicalReader reader) add a logicalReader to the composite.
void	initialize(java.lang.String name, org.fosstrak.ale.xsd.ale.epcglobal.LRSpec aspec) initializes a Composite Reader. this method must be called befor the Reader can be used.
void	removeReader(LogicalReader reader) removes a given reader from the composite.
void	start() starts all components of a composite reader.
void	stop() stops all components of a composite reader.
void	unregisterAsObserver() unregister this compositeReader from its observables.
void	update(org.fosstrak.ale.xsd.ale.epcglobal.LRSpec aspec) this method changes the specification of a reader.
void	update(java.util.Observable o, java.lang.Object arg) implements the update-method for the observer-pattern for events.

Methods inherited from class org.fosstrak.ale.server.readers.LogicalReader

createReader, getLRSpec, getName, getProperties, isStarted, setLRSpec, setName, setProperties, setStarted, setStopped

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeReader

public CompositeReader()

constructor for the composite reader.

Method Detail

initialize

public void initialize(java.lang.String name,
                       org.fosstrak.ale.xsd.ale.epcglobal.LRSpec aspec)
                throws org.fosstrak.ale.wsdl.ale.epcglobal.ImplementationExceptionResponse

initializes a Composite Reader. this method must be called befor the Reader can be used.

Overrides:

initialize in class LogicalReader

Parameters:

name - the name for the reader encapsulated by this reader.

aspec - the specification that describes the current reader.

Throws:

org.fosstrak.ale.wsdl.ale.epcglobal.ImplementationException - whenever an internal error occurs.

org.fosstrak.ale.wsdl.ale.epcglobal.ImplementationExceptionResponse

unregisterAsObserver

public void unregisterAsObserver()

unregister this compositeReader from its observables.

update

public void update(java.util.Observable o,
                   java.lang.Object arg)

implements the update-method for the observer-pattern for events.

Specified by:

update in interface java.util.Observer

Parameters:

o - the observed object

arg - the arguments passed by the observable

addReader

public void addReader(LogicalReader reader)

add a logicalReader to the composite.

Parameters:

reader - a logicalReader (baseReader or CompositeReader)

removeReader

public void removeReader(LogicalReader reader)

removes a given reader from the composite.

Parameters:

reader - a logicalReader (baseReader or CompositeReader).

update

public void update(org.fosstrak.ale.xsd.ale.epcglobal.LRSpec aspec)
            throws org.fosstrak.ale.wsdl.ale.epcglobal.ImplementationExceptionResponse

this method changes the specification of a reader.

Specified by:

update in class LogicalReader

Parameters:

aspec - an LRSpec containing the changes for the reader

Throws:

org.fosstrak.ale.wsdl.ale.epcglobal.ImplementationException - whenever an internal error occurs

org.fosstrak.ale.wsdl.ale.epcglobal.ImplementationExceptionResponse

start

public void start()

starts all components of a composite reader.

Specified by:

start in class LogicalReader

stop

public void stop()

stops all components of a composite reader.

Specified by:

stop in class LogicalReader