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ObjectIdentifier


org.apache.harmony.security.asn1

Class 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

      Methods
      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).
    • 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


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