org.apache.harmony.security.asn1

Class ObjectIdentifier

java.lang.Object

org.apache.harmony.security.asn1.ObjectIdentifier

public final class ObjectIdentifier
extends Object

Instance of this class represents ObjectIdentifier (OID). According to X.690: OID is represented as a sequence of subidentifier. Each subidentifier is represented as non negative integer value. There are at least 2 subidentifiers in the sequence. Valid values for first subidentifier are 0, 1 and 2. If the first subidentifier has 0 or 1 value the second subidentifier must be less then 40.

See Also:

ASN.1

Constructor Summary

Constructors

Constructor and Description
ObjectIdentifier(int[] oid) Creates ObjectIdentifier(OID) from array of integers.
ObjectIdentifier(String strOid) Creates ObjectIdentifier(OID) from string representation.

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
int	hashCode() Returns an integer hash code for this object.
static boolean	isOID(String str) Returns whether the given string is a valid ObjectIdentifier (OID) representation.
static int[]	toIntArray(String str) Gets ObjectIdentifier (OID) from string representation.
String	toString() Returns a string containing a concise, human-readable description of this object.
static String	toString(int[] oid) Returns string representation of OID.
static void	validate(int[] oid) Validates ObjectIdentifier (OID).

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectIdentifier

public ObjectIdentifier(int[] oid)

Creates ObjectIdentifier(OID) from array of integers.

Parameters:

oid - array of integers

Throws:

IllegalArgumentException - if oid is invalid or null

ObjectIdentifier

public ObjectIdentifier(String strOid)

Creates ObjectIdentifier(OID) from string representation.

Parameters:

strOid - oid string

Throws:

IllegalArgumentException - if oid string is invalid or null

Method Detail

equals

public boolean equals(Object o)

Description copied from class: Object

Compares this instance with the specified object and indicates if they are equal. In order to be equal, o must represent the same object as this instance using a class-specific comparison. The general contract is that this comparison should be reflexive, symmetric, and transitive. Also, no object reference other than null is equal to null.

The default implementation returns true only if this == o. See Writing a correct equals method if you intend implementing your own equals method.

The general contract for the equals and Object.hashCode() methods is that if equals returns true for any two objects, then hashCode() must return the same value for these objects. This means that subclasses of Object usually override either both methods or neither of them.

Overrides:

equals in class Object

Parameters:

o - the object to compare this instance with.

Returns:

true if the specified object is equal to this Object; false otherwise.

See Also:

Object.hashCode()

toString

public String toString()

Description copied from class: Object

Returns a string containing a concise, human-readable description of this object. Subclasses are encouraged to override this method and provide an implementation that takes into account the object's type and data. The default implementation is equivalent to the following expression:

   getClass().getName() + '@' + Integer.toHexString(hashCode())

See Writing a useful toString method if you intend implementing your own toString method.

Overrides:

toString in class Object

Returns:

a printable representation of this object.

hashCode

public int hashCode()

Description copied from class: Object

Returns an integer hash code for this object. By contract, any two objects for which Object.equals(java.lang.Object) returns true must return the same hash code value. This means that subclasses of Object usually override both methods or neither method.

Note that hash values must not change over time unless information used in equals comparisons also changes.

See Writing a correct hashCode method if you intend implementing your own hashCode method.

Overrides:

hashCode in class Object

Returns:

this object's hash code.

See Also:

Object.equals(java.lang.Object)

validate

public static void validate(int[] oid)

Validates ObjectIdentifier (OID).

Parameters:

oid - oid as array of integers

Throws:

IllegalArgumentException - if oid is invalid or null

toString

public static String toString(int[] oid)

Returns string representation of OID. Note: it is supposed that passed array of integers contains valid OID value, so no checks are performed.

Parameters:

oid - oid as array of integers

Returns:

oid string representation

toIntArray

public static int[] toIntArray(String str)

Gets ObjectIdentifier (OID) from string representation. String representation is defined by the following syntax: OID = subidentifier 1*("." subidentifier) subidentifier = 1*(digit)

Parameters:

str - string representation of OID

Returns:

oid as array of integers

Throws:

IllegalArgumentException - if oid string is invalid or null

isOID

public static boolean isOID(String str)

Returns whether the given string is a valid ObjectIdentifier (OID) representation. String representation is defined as for toIntArray(java.lang.String).

Parameters:

str - string representation of OID

Returns:

true if oidString has valid syntax or false if not