net.percederberg.mibble.value
Class NullValue

java.lang.Object
  net.percederberg.mibble.MibValue
      net.percederberg.mibble.value.NullValue

All Implemented Interfaces:

java.lang.Comparable

public class NullValue
extends MibValue

A null MIB value.

Since:

2.0

Field Summary

static NullValue

NULL The one a only null value instance.

Method Summary

int	compareTo(java.lang.Object obj) Compares this object with the specified object for order.
MibValue	createReference() Creates a value reference to this value.
boolean	equals(java.lang.Object obj) Checks if this object equals another object.
int	hashCode() Returns a hash code for this object.
MibValue	initialize(MibLoaderLog log, MibType type) Initializes the MIB value.
java.lang.Object	toObject() Returns a Java null representation of this value.
java.lang.String	toString() Returns a string representation of this value.

Methods inherited from class net.percederberg.mibble.MibValue

clear, getName, getReferenceSymbol, isReferenceTo, isReferenceTo, setReferenceSymbol

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

NULL

public static final NullValue NULL

The one a only null value instance.

Method Detail

initialize

public MibValue initialize(MibLoaderLog log,
                           MibType type)

Initializes the MIB value. This will remove all levels of indirection present, such as references to other values. No value information is lost by this operation. This method may modify this object as a side-effect, and will return the basic value.

NOTE: This is an internal method that should only be called by the MIB loader.

Specified by:

initialize in class MibValue

Parameters:

log - the MIB loader log

type - the value type

Returns:

the basic MIB value

createReference

public MibValue createReference()

Creates a value reference to this value. The value reference is normally an identical value. Only certain values support being referenced, and the default implementation of this method throws an exception.

NOTE: This is an internal method that should only be called by the MIB loader.

Overrides:

createReference in class MibValue

Returns:

the MIB value reference

Since:

2.2

compareTo

public int compareTo(java.lang.Object obj)

Compares this object with the specified object for order. This method will only compare the string representations with each other.

Parameters:

obj - the object to compare to

Returns:

less than zero if this object is less than the specified, zero if the objects are equal, or greater than zero otherwise

Since:

2.6

equals

public boolean equals(java.lang.Object obj)

Checks if this object equals another object. This method will compare the string representations for equality.

Overrides:

equals in class java.lang.Object

Parameters:

obj - the object to compare with

Returns:

true if the objects are equal, or false otherwise

Since:

2.6

hashCode

public int hashCode()

Returns a hash code for this object.

Overrides:

hashCode in class java.lang.Object

Returns:

a hash code for this object

Since:

2.6

toObject

public java.lang.Object toObject()

Returns a Java null representation of this value.

Specified by:

toObject in class MibValue

Returns:

a Java null representation of this value

toString

public java.lang.String toString()

Returns a string representation of this value.

Overrides:

toString in class java.lang.Object

Returns:

a string representation of this value