com.objsys.asn1j.runtime
Class Asn1Null

java.lang.Object
  com.objsys.asn1j.runtime.Asn1Type
      com.objsys.asn1j.runtime.Asn1Null

All Implemented Interfaces:

Asn1TypeIF, java.lang.Cloneable, java.io.Serializable

public class Asn1Null

extends Asn1Type

This class represents the ASN.1 NULL built-in type.

See Also:

Serialized Form

Field Summary

static Asn1Null	NULL_VALUE The NULL_VALUE constant represents a NULL value.
static Asn1Tag	TAG The TAG constant describes the universal tag for this data type (UNIVERSAL 5).

Fields inherited from class com.objsys.asn1j.runtime.Asn1Type

BIT_STRING, BMPString, BOOLEAN, ENUMERATED, EOC, EXTERNAL, GeneralString, GeneralTime, GraphicString, IA5String, INTEGER, NULL, NumericString, OBJECT_IDENTIFIER, ObjectDescriptor, OCTET_STRING, OpenType, PrintableString, REAL, RelativeOID, SEQUENCE, SET, T61String, TeletexString, UniversalString, UTCTime, UTF8String, VideotexString, VisibleString

Constructor Summary

Asn1Null()

Method Summary

void	decode(Asn1BerDecodeBuffer buffer, boolean explicit, int implicitLength) This method decodes an ASN.1 null value including the UNIVERSAL tag value and length if explicit tagging is specified.
void	decode(Asn1PerDecodeBuffer buffer) This method decodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).
void	decodeXER(java.lang.String buffer, java.lang.String attrs) This method decodes an ASN.1 null value using the XML encoding rules (XER).
void	decodeXML(java.lang.String buffer, java.lang.String attrs) This method decodes an ASN.1 null value using the XML schema encoding rules.
int	encode(Asn1BerEncodeBuffer buffer, boolean explicit) This method encodes an ASN.1 null value including the UNIVERSAL tag value and length if explicit tagging is specified.
void	encode(Asn1BerOutputStream out, boolean explicit) This method encodes and writes to the stream an ASN.1 NULL value including the UNIVERSAL tag value and length if explicit tagging is specified.
void	encode(Asn1PerEncodeBuffer buffer) This method encodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).
void	encode(Asn1PerOutputStream out) This method encodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).
void	encode(Asn1XerEncoder buffer, java.lang.String elemName) This method encodes an ASN.1 null value using the XML encoding rules (XER).
void	encode(Asn1XerEncoder buffer, java.lang.String elemName, java.lang.String attribute) This method encodes an ASN.1 null value using the XML Encoding as specified in the XML schema standard(asn2xsd).
java.lang.String	toString() This method will return a string representation of the null value.

Methods inherited from class com.objsys.asn1j.runtime.Asn1Type

clone, decode, decode, decode, encode, encode, encode, getLength, getTypeName, indent, isOpenType, matchTag, matchTag, matchTypeName, pdiag, print, setKey, setOpenType

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

TAG

public static final Asn1Tag TAG

The TAG constant describes the universal tag for this data type (UNIVERSAL 5).

NULL_VALUE

public static final Asn1Null NULL_VALUE

The NULL_VALUE constant represents a NULL value.

Constructor Detail

Asn1Null

public Asn1Null()

Method Detail

decode

public void decode(Asn1BerDecodeBuffer buffer,
                   boolean explicit,
                   int implicitLength)
            throws Asn1Exception,
                   java.io.IOException

This method decodes an ASN.1 null value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version uses the Basic Encoding Rules (BER).

Specified by:

decode in interface Asn1TypeIF

Overrides:

decode in class Asn1Type

Parameters:

buffer - Decode message buffer object

explicit - Flag indicating element is explicitly tagged

implicitLength - Length of contents if implicit

Returns:

Decoded integer value

Throws:

Asn1Exception

java.io.IOException

encode

public int encode(Asn1BerEncodeBuffer buffer,
                  boolean explicit)
           throws Asn1Exception

This method encodes an ASN.1 null value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version used the Basic Encoding Rules (BER).

Specified by:

encode in interface Asn1TypeIF

Overrides:

encode in class Asn1Type

Parameters:

buffer - Encode message buffer object

explicit - Flag indicating explicit tagging should be done

Returns:

Length (in octets) of encoded component

Throws:

Asn1Exception

decode

public void decode(Asn1PerDecodeBuffer buffer)
            throws Asn1Exception,
                   java.io.IOException

This method decodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Specified by:

decode in interface Asn1TypeIF

Overrides:

decode in class Asn1Type

Parameters:

buffer - Decode message buffer object

Throws:

Asn1Exception

java.io.IOException

encode

public void encode(Asn1PerEncodeBuffer buffer)
            throws Asn1Exception,
                   java.io.IOException

This method encodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Specified by:

encode in interface Asn1TypeIF

Overrides:

encode in class Asn1Type

Parameters:

buffer - Encode message buffer object

Throws:

Asn1Exception

java.io.IOException

encode

public void encode(Asn1XerEncoder buffer,
                   java.lang.String elemName)
            throws java.io.IOException,
                   Asn1Exception

This method encodes an ASN.1 null value using the XML encoding rules (XER).

Specified by:

encode in interface Asn1TypeIF

Overrides:

encode in class Asn1Type

Parameters:

buffer - Encode message buffer object

elemName - Element name

Throws:

Asn1Exception - Thrown, if operation is failed.

java.io.IOException - Any exception thrown by the underlying stream.

decodeXER

public void decodeXER(java.lang.String buffer,
                      java.lang.String attrs)
               throws Asn1Exception

This method decodes an ASN.1 null value using the XML encoding rules (XER).

Parameters:

buffer - String containing data to be decoded

attrs - Attributes string from element tag

Throws:

Asn1Exception

encode

public void encode(Asn1XerEncoder buffer,
                   java.lang.String elemName,
                   java.lang.String attribute)
            throws java.io.IOException,
                   Asn1Exception

This method encodes an ASN.1 null value using the XML Encoding as specified in the XML schema standard(asn2xsd).

Specified by:

encode in interface Asn1TypeIF

Overrides:

encode in class Asn1Type

Parameters:

buffer - Encode message buffer object

elemName - Element name

attribute - Element attribute value

Throws:

Asn1Exception - Thrown, if operation is failed.

java.io.IOException - Any exception thrown by the underlying stream.

decodeXML

public void decodeXML(java.lang.String buffer,
                      java.lang.String attrs)
               throws Asn1Exception

This method decodes an ASN.1 null value using the XML schema encoding rules.

Parameters:

buffer - String containing data to be decoded

attrs - Attributes string from element tag

Throws:

Asn1Exception

toString

public java.lang.String toString()

This method will return a string representation of the null value. The format is the ASN.1 vlaue format for this type..

Returns:

Stringified representation of the value

encode

public void encode(Asn1BerOutputStream out,
                   boolean explicit)
            throws Asn1Exception,
                   java.io.IOException

This method encodes and writes to the stream an ASN.1 NULL value including the UNIVERSAL tag value and length if explicit tagging is specified. This overloaded version uses the Basic Encoding Rules (BER).

Specified by:

encode in interface Asn1TypeIF

Overrides:

encode in class Asn1Type

Parameters:

out - BER Output Stream object

explicit - Flag indicating explicit tagging should be done

Throws:

java.io.IOException - Any exception thrown by the underlying OutputStream.

Asn1Exception - Thrown, if operation is failed.

encode

public void encode(Asn1PerOutputStream out)
            throws Asn1Exception,
                   java.io.IOException

This method encodes an ASN.1 null value in accordance with the Packed Encoding Rules (PER).

Specified by:

encode in interface Asn1TypeIF

Overrides:

encode in class Asn1Type

Parameters:

out - PER Output Stream object

Throws:

java.io.IOException - Any exception thrown by the Asn1PerOutputStream.

Asn1Exception - Thrown, if operation is failed.