snmp.mibdb
Class MibDatabaseImpl

java.lang.Object
  |
  +--snmp.mibdb.MibDatabase
        |
        +--snmp.mibdb.MibDatabaseImpl

All Implemented Interfaces:

java.io.Serializable

class MibDatabaseImpl

extends MibDatabase

implements java.io.Serializable

This class reads the MIB file and loads the mib tree into a link list. Each node in the link list represents a object variable in the MIB file. Each object variable contains a reference to its parent variable and a list of child variables. In order to access the object variable efficiently, it also contains a hash map that can access the variable object group directly.

Version:

$Revision: 0.1 $ $Date: 2004/03/09 06:03:55 $

Author:

Scott Cheng

Field Summary

private java.util.HashMap	indexList
private static MibDatabaseImpl	instance
private OidEntity	root

Constructor Summary

private

MibDatabaseImpl(java.lang.String mibFile) Constructs the MIB database using the passed mib file name.

Method Summary

(package private) void	addIndex(OidEntity node) Adds the OidEntity node into the index list.
static MibDatabase	create(java.lang.String mibFile) Creates the singleton MibDatabase instance from the passed MIB file.
private void	createDB(net.percederberg.mib.Mib mib)
private void	createDB(net.percederberg.mib.symbol.Symbol symbol)
static MibDatabase	getInstance() Gets the singleton MibDatabase instance.
OidEntity	getOidGroup(java.lang.String oid) Retrieves the OidEntity object that matches to the passed OID string in the MIB database.
OidRecord	getOidRecord(java.lang.String oid) Retrieves the OidRecord that matches to the passed OID string in the MIB database.

Methods inherited from class java.lang.Object

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

Field Detail

instance

private static MibDatabaseImpl instance

indexList

private java.util.HashMap indexList

root

private OidEntity root

Constructor Detail

MibDatabaseImpl

private MibDatabaseImpl(java.lang.String mibFile)
                 throws SnmpException

Constructs the MIB database using the passed mib file name.

Parameters:

mibFile - The MIB file name.

Method Detail

getOidRecord

public OidRecord getOidRecord(java.lang.String oid)
                       throws SnmpException

Retrieves the OidRecord that matches to the passed OID string in the MIB database.

Specified by:

getOidRecord in class MibDatabase

Parameters:

oid - OID string

Returns:

The matched OidRecord

Throws:

SnmpException - Thrown if there is no such OID record.

getOidGroup

public OidEntity getOidGroup(java.lang.String oid)
                      throws SnmpException

Retrieves the OidEntity object that matches to the passed OID string in the MIB database.

Parameters:

oid - OID string

Returns:

The matched group OidRecord

Throws:

SnmpException - Thrown if there is no such OID group.

createDB

private void createDB(net.percederberg.mib.Mib mib)
               throws SnmpException

SnmpException

createDB

private void createDB(net.percederberg.mib.symbol.Symbol symbol)
               throws SnmpException

SnmpException

addIndex

void addIndex(OidEntity node)

Adds the OidEntity node into the index list.

Parameters:

node - The OidEntity node.

create

public static MibDatabase create(java.lang.String mibFile)
                          throws SnmpException

Creates the singleton MibDatabase instance from the passed MIB file.

Parameters:

mibFile - The MIB file name.

Returns:

The MibDatabase instance.

Throws:

SnmpException - Thrown when any error occurs during the MIB database creation.

getInstance

public static MibDatabase getInstance()
                               throws SnmpException

Gets the singleton MibDatabase instance.

Returns:

The MibDatabase instance.

Throws:

SnmpException - Thrown when there is no instance of the MibDatabase existed.