com.k_int.z3950.server.demo
Class DemoSearchTask

java.lang.Object
  |
  +--java.util.Observable
        |
        +--com.k_int.IR.SearchTask
              |
              +--com.k_int.z3950.server.demo.DemoSearchTask

All Implemented Interfaces:

InformationFragmentSource

public class DemoSearchTask

extends SearchTask

implements InformationFragmentSource

Field Summary

int	demo_search_status

Fields inherited from class com.k_int.IR.SearchTask

create_time, max_messages, message_log, query, TASK_COMPLETE, TASK_EXECUTING_ASYNC, TASK_EXECUTING_SYNC, TASK_FAILURE, task_identifier, TASK_IDLE, task_status_code, user_data

Constructor Summary

DemoSearchTask(DemoSearchable source, java.util.Observer[] observers)

Method Summary

void	destroy() Release all resources and shut down the object
void	destroyTask() From SearchTask abstract base class
int	evaluate(int timeout) Evaluate the query, waiting at most timeout milliseconds, returning the search status.
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
int	getPrivateTaskStatusCode()
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.
InformationFragmentSource	getTaskResultSet() getTaskResultSet.
java.lang.String	lookupPrivateStatusCode(int code)
void	setFragmentCount(int i)
void	setPrivateTaskStatusCode(int i)
void	store(int id, InformationFragment fragment)

Methods inherited from class com.k_int.IR.SearchTask

addFragmentSourceObserver, cancelTask, getLastStatusMessages, getQuery, getSubtasks, getTaskCreationTime, getTaskIdentifier, getTaskStatusCode, getUserData, hasSubtasks, logStatusMessage, setMaxStatusMessageItems, setQuery, setTaskStatusCode, setUserData, waitForStatus

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

Methods inherited from interface com.k_int.IR.InformationFragmentSource

addFragmentSourceObserver

Field Detail

demo_search_status

public int demo_search_status

Constructor Detail

DemoSearchTask

public DemoSearchTask(DemoSearchable source,
                      java.util.Observer[] observers)

Method Detail

getPrivateTaskStatusCode

public int getPrivateTaskStatusCode()

Overrides:

getPrivateTaskStatusCode in class SearchTask

setPrivateTaskStatusCode

public void setPrivateTaskStatusCode(int i)

lookupPrivateStatusCode

public java.lang.String lookupPrivateStatusCode(int code)

Overrides:

lookupPrivateStatusCode in class SearchTask

evaluate

public int evaluate(int timeout)

Description copied from class: SearchTask

Evaluate the query, waiting at most timeout milliseconds, returning the search status. InformationFragmentSource object should be used to check the final number of result records.

Overrides:

evaluate in class SearchTask

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)

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)

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

store

public void store(int id,
                  InformationFragment fragment)

setFragmentCount

public void setFragmentCount(int i)

getFragmentCount

public int getFragmentCount()

Description copied from interface: InformationFragmentSource

Current number of fragments available

Specified by:

getFragmentCount in interface InformationFragmentSource

getTaskResultSet

public InformationFragmentSource getTaskResultSet()

Description copied from class: SearchTask

getTaskResultSet. Search tasks delagate the responsibility of managing a result set to an instance of the InformationFragmentSource. Often, the SearchTask will implement InformationFragmentSource itself, and return (this) as the realisation of the getTaskResultSet method. Other SearchTasks may use some cache managing FragmentSource to wrapper the source result set and return that object.

Overrides:

getTaskResultSet in class SearchTask

destroy

public void destroy()

Description copied from interface: InformationFragmentSource

Release all resources and shut down the object

Specified by:

destroy in interface InformationFragmentSource

destroyTask

public void destroyTask()

From SearchTask abstract base class

Overrides:

destroyTask in class SearchTask

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