Class ObjectIdentifier
- All Implemented Interfaces:
Serializable
Object Identifiers are arbitrary length hierarchical identifiers. The individual components are numbers, and they define paths from the root of an ISO-managed identifier space. You will sometimes see a string name used instead of (or in addition to) the numerical id. These are synonyms for the numerical IDs, but are not widely used since most sites do not know all the requisite strings, while all sites can parse the numeric forms.
So for example, JavaSoft has the sole authority to assign the meaning to identifiers below the 1.3.6.1.4.42.2.17 node in the hierarchy, and other organizations can easily acquire the ability to assign such unique identifiers.
- See Also:
-
Constructor Summary
ConstructorsConstructorDescriptionObjectIdentifier
(int[] values) Constructs an object ID from an array of integers.ObjectIdentifier
(long[] values) Constructs an object ID from an array of longs This is used to construct constant object IDs.ObjectIdentifier
(String oid) Constructs an object identifier from a string.ObjectIdentifier
(BigInteger[] values) Constructs an object ID from an ASN.1 encoded input stream. -
Method Summary
Modifier and TypeMethodDescriptionvoid
encode
(DerOutputStream out) boolean
boolean
equals
(ObjectIdentifier other) Compares this identifier with another, for equality.static ObjectIdentifier
getObjectIdentifier
(int[] values) static ObjectIdentifier
int
hashCode()
boolean
precedes
(ObjectIdentifier other) Compares this identifier with another, for sorting purposes.toString()
Returns a string form of the object ID.
-
Constructor Details
-
ObjectIdentifier
Constructs an object identifier from a string. This string should be of the form 1.23.34.45.56 etc. -
ObjectIdentifier
public ObjectIdentifier(int[] values) Constructs an object ID from an array of integers. This is used to construct constant object IDs. -
ObjectIdentifier
-
ObjectIdentifier
public ObjectIdentifier(long[] values) Constructs an object ID from an array of longs This is used to construct constant object IDs. -
ObjectIdentifier
Constructs an object ID from an ASN.1 encoded input stream. The encoding of the ID in the stream uses "DER", a BER/1 subset. In this case, that means a triple { typeId, length, data }.NOTE: When an exception is thrown, the input stream has not been returned to its "initial" state.
- Parameters:
in
- DER-encoded data holding an object ID- Throws:
IOException
- indicates a decoding error
-
-
Method Details
-
encode
- Throws:
IOException
-
precedes
Compares this identifier with another, for sorting purposes. An identifier does not precede itself.- Parameters:
other
- identifer that may precede this one.- Returns:
- true iff other precedes this one in a particular sorting order.
-
equals
-
equals
Compares this identifier with another, for equality.- Returns:
- true iff the names are identical.
-
hashCode
public int hashCode() -
toString
Returns a string form of the object ID. The format is the conventional "dot" notation for such IDs, without any user-friendly descriptive strings, since those strings will not be understood everywhere. -
getObjectIdentifier
- Throws:
IOException
-
getObjectIdentifier
- Throws:
IOException
-