zeta
Class TaskServer

java.lang.Object
  |
  +--zeta.TaskServer

public class TaskServer

extends java.lang.Object

Defines the task at the server side.

Field Summary

private java.math.BigInteger	decryptionNumber Decryption number for the Decryptor (half-certified Diffie-Hellman protocol).
private static java.math.BigInteger	defaultDecryptionNumber The default decryption number for the half-certified Diffie-Hellman protocol.
private byte[]	encryptionClass The bytes that make up the class data which contains the key to encrypt the results of this task.
private java.lang.String	encryptionSignature Digital signature of the class name which contains the key to encrypt the results of this task.
private int	id ID of the task.
private static java.util.Map	mapTask Maps a task name on a task.
private java.lang.String	name The unique name of the task.
private java.util.Map	parameter Parameters of the HttpRequest.
private TaskRequestWorkUnitProcessor	requestProcessor An object which processes the request for work units of the task.
private TaskResultProcessor	resultProcessor An object for the specified class name which processes the task results.

Constructor Summary

private	TaskServer(int id, java.lang.String name, java.util.Map parameter) The method getTask must be used.
private	TaskServer(TaskServer taskServer, ZetaServlet servlet, java.util.Map parameter)

Method Summary

java.math.BigInteger	getDecryptionNumber() Returns the decryption number for the Decryptor (half-certified Diffie-Hellman protocol).
private static java.math.BigInteger	getDefaultDecryptionNumber(ZetaServlet servlet) Returns the default decryption number for the half-certified Diffie-Hellman protocol.
byte[]	getEncryptionClass() Returns the bytes that make up the class data which contains the key to encrypt the results of this task.
java.lang.String	getEncryptionSignature() Returns the digital signature (big integer radix 32) of the class name which contains the key to encrypt the results of this task.
int	getId() Returns the ID of the task.
java.lang.String	getName() Returns the unique name of the task.
java.util.Map	getParameter() Returns the decrypted parameters of the HttpRequest.
java.lang.String	getParameter(java.lang.String key) Returns a value for a key from the specified map with parameters.
private static TaskRequestWorkUnitProcessor	getRequestProcessor(ZetaServlet servlet, java.sql.Statement stmt, java.lang.String requestProcessorName, java.util.Map parameter) Returns an object for the specified class name which processes the request for work units of the task.
TaskRequestWorkUnitProcessor	getRequestWorkUnitProcessor() Returns an object which processes the request for work units of the task.
TaskResultProcessor	getResultProcessor() Returns an object which processes the task results.
private static TaskResultProcessor	getResultProcessor(ZetaServlet servlet, java.sql.Statement stmt, java.lang.String resultProcessorName, java.util.Map parameter) Returns an object for the specified class name which processes the task results.
static TaskServer	getTask(ZetaServlet servlet, java.util.Map parameter) Returns the task object of a specified task name.

Methods inherited from class java.lang.Object

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

Field Detail

id

private int id

ID of the task.

name

private java.lang.String name

The unique name of the task.

encryptionClass

private byte[] encryptionClass

The bytes that make up the class data which contains the key to encrypt the results of this task.

encryptionSignature

private java.lang.String encryptionSignature

Digital signature of the class name which contains the key to encrypt the results of this task. A big integer radix 32.

decryptionNumber

private java.math.BigInteger decryptionNumber

Decryption number for the Decryptor (half-certified Diffie-Hellman protocol).

requestProcessor

private TaskRequestWorkUnitProcessor requestProcessor

An object which processes the request for work units of the task.

resultProcessor

private TaskResultProcessor resultProcessor

An object for the specified class name which processes the task results.

parameter

private java.util.Map parameter

Parameters of the HttpRequest.

mapTask

private static java.util.Map mapTask

Maps a task name on a task.

defaultDecryptionNumber

private static java.math.BigInteger defaultDecryptionNumber

The default decryption number for the half-certified Diffie-Hellman protocol.

Constructor Detail

TaskServer

private TaskServer(int id,
                   java.lang.String name,
                   java.util.Map parameter)

The method getTask must be used.

Parameters:

id - ID of the task

name - name of the task

TaskServer

private TaskServer(TaskServer taskServer,
                   ZetaServlet servlet,
                   java.util.Map parameter)

Method Detail

getTask

public static TaskServer getTask(ZetaServlet servlet,
                                 java.util.Map parameter)
                          throws javax.servlet.ServletException,
                                 java.sql.SQLException

Returns the task object of a specified task name.

Parameters:

servlet - surrounding servlet

Returns:

the task object of a specified task ID if it is defined, otherwise null.

Throws:

java.sql.SQLException - if a database access error occurs.

javax.servlet.ServletException

getId

public int getId()

Returns the ID of the task.

Returns:

the ID of the task.

getName

public java.lang.String getName()

Returns the unique name of the task.

Returns:

the unique name of the task.

getEncryptionClass

public byte[] getEncryptionClass()

Returns the bytes that make up the class data which contains the key to encrypt the results of this task.

Returns:

the bytes that make up the class data which contains the key to encrypt the results of this task.

getEncryptionSignature

public java.lang.String getEncryptionSignature()

Returns the digital signature (big integer radix 32) of the class name which contains the key to encrypt the results of this task.

Returns:

the digital signature (big integer radix 32) of the class name which contains the key to encrypt the results of this task.

getDecryptionNumber

public java.math.BigInteger getDecryptionNumber()

Returns the decryption number for the Decryptor (half-certified Diffie-Hellman protocol).

Returns:

the decryption number for the Decryptor (half-certified Diffie-Hellman protocol).

getRequestWorkUnitProcessor

public TaskRequestWorkUnitProcessor getRequestWorkUnitProcessor()

Returns an object which processes the request for work units of the task.

Returns:

an object which processes the request for work units of the task or null if it is not defined.

getResultProcessor

public TaskResultProcessor getResultProcessor()

Returns an object which processes the task results.

Returns:

an object which processes the task results or null if it is not defined.

getParameter

public java.util.Map getParameter()

Returns the decrypted parameters of the HttpRequest.

Returns:

the decrypted parameters of the HttpRequest.

getParameter

public java.lang.String getParameter(java.lang.String key)

Returns a value for a key from the specified map with parameters.

Parameters:

key - key

Returns:

value for a key from the specified map with parameters; null if no value was found.

getRequestProcessor

private static TaskRequestWorkUnitProcessor getRequestProcessor(ZetaServlet servlet,
                                                                java.sql.Statement stmt,
                                                                java.lang.String requestProcessorName,
                                                                java.util.Map parameter)

Returns an object for the specified class name which processes the request for work units of the task.

Parameters:

servlet - surrounding servlet

stmt - statement object's database

requestProcessorName - class name which processes the request for work units of the task

Returns:

an object for the specified class name which processes the request for work units of the task or null if the class is not defined.

getResultProcessor

private static TaskResultProcessor getResultProcessor(ZetaServlet servlet,
                                                      java.sql.Statement stmt,
                                                      java.lang.String resultProcessorName,
                                                      java.util.Map parameter)

Returns an object for the specified class name which processes the task results.

Parameters:

servlet - surrounding servlet

stmt - statement object's database

resultProcessorName - class name which processes the task results

Returns:

an object for the specified class name which processes the task results or null if the class is not defined.

getDefaultDecryptionNumber

private static java.math.BigInteger getDefaultDecryptionNumber(ZetaServlet servlet)
                                                        throws javax.servlet.ServletException,
                                                               java.sql.SQLException

Returns the default decryption number for the half-certified Diffie-Hellman protocol.

Parameters:

servlet - surrounding servlet

Returns:

the default decryption number for the half-certified Diffie-Hellman protocol.

Throws:

java.sql.SQLException - if a database access error occurs.

javax.servlet.ServletException