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Class netscape.security.util.ObjectIdentifier

netscape.security.util.ObjectIdentifier

public final class ObjectIdentifier
Represent an ISO Object Identifier.

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.


Constructor Index

 o ObjectIdentifier(DerInputStream)
Constructs an object ID from an ASN.1 encoded input stream.
 o ObjectIdentifier(int[])
Constructs an object ID from an array of integers.
 o ObjectIdentifier(String)
Constructs an object identifier from a string.

Method Index

 o equals(Object)
 o equals(ObjectIdentifier)
Compares this identifier with another, for equality.
 o hashCode()
 o precedes(ObjectIdentifier)
Compares this identifier with another, for sorting purposes.
 o toString()
Returns a string form of the object ID.

Constructors

 o ObjectIdentifier
 public ObjectIdentifier(String oid)
Constructs an object identifier from a string. This string should be of the form 1.23.34.45.56 etc.

 o ObjectIdentifier
 public ObjectIdentifier(int values[])
Constructs an object ID from an array of integers. This is used to construct constant object IDs.

 o ObjectIdentifier
 public ObjectIdentifier(DerInputStream in) throws IOException
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

Methods

 o precedes
 public boolean precedes(ObjectIdentifier other)
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.
 o equals
 public boolean equals(Object other)
 o equals
 public boolean equals(ObjectIdentifier other)
Compares this identifier with another, for equality.

Returns:
true iff the names are identical.
 o hashCode
 public int hashCode()
 o toString
 public String 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.


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