com.opmath.util.db
Class DBRemoteObject

java.lang.Object
  |
  +--com.opmath.util.db.DBObject
        |
        +--com.opmath.util.db.DBRemoteObject

All Implemented Interfaces:

DB, DBRemote

public abstract class DBRemoteObject

extends DBObject

implements DBRemote

The superclass for implementations of the com.opmath.util.db.DBRemote interface.

This class implements instance variables and methods that are likely to be common to all implementations of com.opmath.util.db.DBRemote.

Copyright: (c) 2002 The Open Math Company Limited

The Terms of Distribution of this software are stipulated in the javadoc Overview for this project.

Since:

J2SE 1.3.0

Version:

DB v1.0

Author:

Bruno Beloff bruno.beloff@opmath.com

Field Summary

protected String

host The name of the host for this DBRemote server.

Fields inherited from class com.opmath.util.db.DBObject

conn, path, protocol

Constructor Summary

DBRemoteObject()

Method Summary

String	getHost() Returns the host for the current connection.
static DB	newDbConnection(String className, String path) Explicitly prohibited by this class.
static DBRemote	newDbConnection(String className, String host, String path) A factory method for implementations of the DBRemote interface.

Methods inherited from class com.opmath.util.db.DBObject

className, create, createTable, delete, delete, dropTable, getConnection, getPath, getProtocol, isAvailable, maxIndex, query, read, read, readAll, update, update

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.opmath.util.db.DB

className, close, connect, create, createTable, delete, delete, dropTable, getConnection, getDriver, getPath, getProtocol, isAvailable, maxIndex, query, read, read, readAll, update, update

Field Detail

host

protected String host

The name of the host for this DBRemote server.

Since:

J2SE 1.3

Constructor Detail

DBRemoteObject

public DBRemoteObject()

Method Detail

newDbConnection

public static DB newDbConnection(String className,
                                 String path)
                          throws UnsupportedOperationException

Explicitly prohibited by this class.

Throws:

UnsupportedOperationException - always.

Since:

J2SE 1.3

See Also:

DBObject.newDbConnection(String, String)

newDbConnection

public static DBRemote newDbConnection(String className,
                                       String host,
                                       String path)
                                throws ClassNotFoundException

A factory method for implementations of the DBRemote interface.

NOTE: This method can only construct DBRemote objects where a constructor of the form <ClassName>(String host, String path) is available.

Parameters:

className - a String the name of the class implementing DBRemote.

host - a String identifying the host.

path - a String specifying the absolute path, including the database file or directory.

Returns:

A new object implementing DBRemote.

Throws:

ClassNotFoundException - if it was not possible to construct the specified object.

Since:

J2SE 1.3

getHost

public String getHost()

Returns the host for the current connection. Returns null if there is no current connection.

Specified by:

getHost in interface DBRemote

Returns:

A String identifying the host.

Since:

J2SE 1.3