Represents an ASN.1 NULL value.

no subtypes hierarchy

Initializer
Asn1Null(Byte[] encoded, IdentityInfo identityInfo, Integer lengthOctetsOffset, Integer contentOctetsOffset, Boolean violatesDer)
Attributes
asn1ValueStringshared actual String asn1ValueString

still not decided when to output what

defaultTagshared actual Tag defaultTag

The tag that an instance of this class has when used without tag in a specification.

hashshared actual Integer hash

The hash value of the value, which allows the value to be an element of a hash-based set or key of a hash-based map. Implementations must respect the constraint that:

  • if x==y then x.hash==y.hash.

Therefore, a class which refines equals must also refine hash.

In general, hash values vary between platforms and between executions of the same program.

Note that when executing on a Java Virtual Machine, the 64-bit Integer value returned by an implementation of hash is truncated to a 32-bit integer value by removal of the 32 highest order bits, before returning the value to the caller.

Refines Identifiable.hash ultimately refines Object.hash
Inherited Attributes
Attributes inherited from: Asn1Value<Value>
Attributes inherited from: GenericAsn1Value
Attributes inherited from: Object
hash, string
Methods
decodeshared actual Null decode()

Subclasses must implement this if the decoded value is not stored in the instance and thus must be decoded each time Asn1Value.val is called.

If the decoded value is stored in the instance, then this method need not be refined.

equalsshared actual Boolean equals(Object other)

Determine if two values are equal. Implementations should respect the constraints that:

  • if x===y then x==y (reflexivity),
  • if x==y then y==x (symmetry),
  • if x==y and y==z then x==z (transitivity).

Furthermore it is recommended that implementations ensure that if x==y then x and y have the same concrete class.

A class which explicitly refines equals() is said to support value equality, and the equality operator == is considered much more meaningful for such classes than for a class which simply inherits the default implementation of identity equality from Identifiable.

Note that an implementation of equals() that always returns false does satisfy the constraints given above. Therefore, in very rare cases where there is no reasonable definition of value equality for a class, for example, function references (Callable), it is acceptable for equals() to be defined to return false for every argument.

Refines Identifiable.equals ultimately refines Object.equals
Inherited Methods
Methods inherited from: Asn1Value<Value>
Methods inherited from: Object
equals