com.nt.udc.nar

Class NARKey

java.lang.Object

com.nt.udc.nar.NARKey

All Implemented Interfaces:

java.io.Serializable

public class NARKey
extends java.lang.Object
implements java.io.Serializable

This class implements a simple NAR key. For the most part, this class should be used when the user needs to deal with a set of NAR's, but would like to access them via a key, rather than by searching (such as in a Hashtable-type Object).

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	hash
protected boolean	hash_made
protected byte[]	keyvalue

Constructor Summary

Constructors

Constructor and Description
NARKey(byte[] value) Use this constructor when you already have a set of bytes that qualifies as the hash code.
NARKey(NAR data, FieldKey[] fieldKeyAttrs)
NARKey(NAR nar, int[] attrs) Creates a NAR Key from the given NAR, using the given attributes to build the key.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(java.lang.Object o) Tests for equality among 2 NARKeys.
int	hashCode() Returns the hash code of this NARKey.
byte[]	toBytes() Returns the byte array value for this key.
java.lang.String	toString() Converts this key to a String.

Methods inherited from class java.lang.Object

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

Field Detail

keyvalue

protected byte[] keyvalue

hash

protected int hash

hash_made

protected boolean hash_made

Constructor Detail

NARKey

public NARKey(byte[] value)

Use this constructor when you already have a set of bytes that qualifies as the hash code.

Parameters:

value - Bytes, to be used as the hash code

NARKey

public NARKey(NAR nar,
      int[] attrs)
       throws java.lang.NullPointerException

Creates a NAR Key from the given NAR, using the given attributes to build the key.

Parameters:

nar - NAR to build the key from.

attrs - Attributes to use when building the key.

Throws:

java.lang.NullPointerException

NARKey

public NARKey(NAR data,
      FieldKey[] fieldKeyAttrs)

Method Detail

toBytes

public byte[] toBytes()

Returns the byte array value for this key.

hashCode

public int hashCode()

Returns the hash code of this NARKey.

Overrides:

hashCode in class java.lang.Object

Returns:

Hash code of this NARKey.

equals

public boolean equals(java.lang.Object o)

Tests for equality among 2 NARKeys. Although this method allows any Object as a parameter, this method will always return false if the parameter is not a NARKey object.

Overrides:

equals in class java.lang.Object

Parameters:

o - NARKey Object to compare.

Returns:

true, if keys are equal

toString

public java.lang.String toString()

Converts this key to a String.

Overrides:

toString in class java.lang.Object

Returns:

Key, in String format.