com.k_int.hss
Class AggregateFragmentSource

java.lang.Object
  |
  +--java.util.Observable
        |
        +--com.k_int.hss.AggregateFragmentSource

All Implemented Interfaces:

InformationFragmentSource

public class AggregateFragmentSource

extends java.util.Observable

implements InformationFragmentSource

AggregateFragmentSource. Object used in conunction with HeterogeneousSetOfSearchable object to track the progress of a specific HSS query and provide access to it's results (And component searches)

Version:

$Id: AggregateFragmentSource.java,v 1.6 2001/06/19 17:19:59 ianibbo Exp $

Author:

Ian Ibbotson

See Also:

InformationFragmentSource

Field Summary

java.util.Observer

subset_observer

Constructor Summary

AggregateFragmentSource()

Method Summary

void	addFragmentSourceObserver(java.util.Observer o) For notification of events This object to be used by objects only interested in being notified about the changing numbers of available records
void	addSource(InformationFragmentSource s)
void	destroy() Release all resources and shut down the object
protected void	finalize()
InformationFragment	getFragment(int index) Position based access to the result set.
InformationFragment[]	getFragment(int starting_fragment, int count) Position based range access to the result set.
InformationFragment	getFragment(java.lang.String handle) Allow access to the set of objects based on a handle system (DOI?)
int	getFragmentCount() Current number of fragments available
java.lang.String	getStatusReport() Return a string based status report intended for display to the user Typical FragmentSource states include EMPTY, FILLING, COMPLETE, and SOURCE_NO_LONGER_AVAILABLE these should be presented in a human readable form.
void	newRecordsAvailable(InformationFragmentSource ifs, int i)

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, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

subset_observer

public java.util.Observer subset_observer

Constructor Detail

AggregateFragmentSource

public AggregateFragmentSource()

Method Detail

finalize

protected void finalize()

Overrides:

finalize in class java.lang.Object

addSource

public void addSource(InformationFragmentSource s)

getFragment

public InformationFragment getFragment(java.lang.String handle)

Description copied from interface: InformationFragmentSource

Allow access to the set of objects based on a handle system (DOI?)

Specified by:

getFragment in interface InformationFragmentSource

getFragment

public InformationFragment getFragment(int index)
                                throws PresentException

Description copied from interface: InformationFragmentSource

Position based access to the result set. Implementation must be 1 based: IE, First record in result set is 1 not 0. Local mappings (e.g to vector) must account for this!

Specified by:

getFragment in interface InformationFragmentSource

getFragment

public InformationFragment[] getFragment(int starting_fragment,
                                         int count)
                                  throws PresentException

Description copied from interface: InformationFragmentSource

Position based range access to the result set. Implementation must be 1 based: IE, First record in result set is 1 not 0. Local mappings (e.g to vector) must account for this!

Specified by:

getFragment in interface InformationFragmentSource

getFragmentCount

public int getFragmentCount()

Description copied from interface: InformationFragmentSource

Current number of fragments available

Specified by:

getFragmentCount in interface InformationFragmentSource

newRecordsAvailable

public void newRecordsAvailable(InformationFragmentSource ifs,
                                int i)

addFragmentSourceObserver

public void addFragmentSourceObserver(java.util.Observer o)

Description copied from interface: InformationFragmentSource

For notification of events This object to be used by objects only interested in being notified about the changing numbers of available records

Specified by:

addFragmentSourceObserver in interface InformationFragmentSource

destroy

public void destroy()

Description copied from interface: InformationFragmentSource

Release all resources and shut down the object

Specified by:

destroy in interface InformationFragmentSource

getStatusReport

public java.lang.String getStatusReport()

Description copied from interface: InformationFragmentSource

Return a string based status report intended for display to the user Typical FragmentSource states include EMPTY, FILLING, COMPLETE, and SOURCE_NO_LONGER_AVAILABLE these should be presented in a human readable form.

Specified by:

getStatusReport in interface InformationFragmentSource