schemajic.encoder
Class CXEREncoder

java.lang.Object
  schemajic.codec.Encoder
      schemajic.encoder.BXEREncoder
          schemajic.encoder.CXEREncoder

All Implemented Interfaces:

ValueVisitor

public class CXEREncoder
extends BXEREncoder
implements ValueVisitor

Encoder for Canonical XML Encoding Rules (CXER) of ASN.1.

Note that XML Comments and Processing Instructions are NOT standardized in BXER/CXER.

Version:

1.00 - 2006/02/12

Author:

support@phillipgriffin.com

Field Summary

Fields inherited from class schemajic.encoder.BXEREncoder

_binaryFormat, _buffer, _currentSchema, _curXmlFormat, _gtFormat, _output, _type, _useNamedIntegers

Constructor Summary

CXEREncoder()

Method Summary

protected XmlWriter	createXmlWriter(java.io.OutputStream out) Creates a new XML writer for the given output stream.
protected void	printArcs(int[] arcs)
protected void	printDefaultValue(ASN1Value value, Field fieldInfo)
java.lang.Object	visit(ASN1BitString value, java.lang.Object object) Encode the bits of the BIT STRING as a string of ones and zeroes with no trailing bits.
java.lang.Object	visit(ASN1Boolean value, java.lang.Object object) The only valid values for a BOOLEAN are 'true' or 'false'.
java.lang.Object	visit(ASN1Choice value, java.lang.Object object) Encode the value of the chosen field.
java.lang.Object	visit(ASN1Enumerated value, java.lang.Object object) Always print the named number as an empty tag.
java.lang.Object	visit(ASN1GeneralizedTime value, java.lang.Object object) An ASN.1 type GeneralizedTime visit method with value and object parameters.
java.lang.Object	visit(ASN1Integer value, java.lang.Object object) An integer value that is not part of a NamedNumberList must be of the format SignedNumber: 0 | -n | n.
java.lang.Object	visit(ASN1ObjectIdentifier value, java.lang.Object object) We always encode the value of an OBJECT-IDENTIFIER using the XMLNumberForm ( dot notation ).
java.lang.Object	visit(ASN1OctetString value, java.lang.Object object) Print as a string of hex characters.
java.lang.Object	visit(ASN1OpenType value, java.lang.Object object) If the OpenType contains a decoded ASN.1 value, then encode the contained value, otherwise assume that the user has provided a correctly encoded value and copy that value into the output stream.
java.lang.Object	visit(ASN1RelativeOID value, java.lang.Object object) We always encode the value of an OBJECT-IDENTIFIER using the XMLNumberForm ( dot notation ).
protected void	writeProlog() The prolog is required to be absent in the encoding.

Methods inherited from class schemajic.encoder.BXEREncoder

encode, printArcs, setUseNamedIntegers, setWriteProlog, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

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

Methods inherited from interface schemajic.model.ValueVisitor

visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Constructor Detail

CXEREncoder

public CXEREncoder()

Method Detail

createXmlWriter

protected XmlWriter createXmlWriter(java.io.OutputStream out)

Creates a new XML writer for the given output stream.

Overrides:

createXmlWriter in class BXEREncoder

Parameters:

out - an output stream

Returns:

a new XmlWriter

visit

public java.lang.Object visit(ASN1Boolean value,
                              java.lang.Object object)
                       throws VisitorException

The only valid values for a BOOLEAN are 'true' or 'false'.

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of an ASN.1 type BOOLEAN in its encoded form

object - visit an object of ASN.1 type BOOLEAN

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1BitString value,
                              java.lang.Object object)
                       throws VisitorException

Encode the bits of the BIT STRING as a string of ones and zeroes with no trailing bits.

Note that only the basic BIT STRING type is supported, and there is no support for NamedBitList values.

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of ASN.1 type BIT STRING

object - an Object to visit

Returns:

the null value

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1Choice value,
                              java.lang.Object object)
                       throws VisitorException

Encode the value of the chosen field.

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of some ASN.1 CHOICE type in its encoded form

object - visit an object of the ASN.1 CHOICE type

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1Enumerated value,
                              java.lang.Object object)
                       throws VisitorException

Always print the named number as an empty tag.

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of ASN.1 type ENUMERATED in its encoded form

object - visit an object of ASN.1 type ENUMERATED

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1GeneralizedTime value,
                              java.lang.Object object)
                       throws VisitorException

Description copied from interface: ValueVisitor

An ASN.1 type GeneralizedTime visit method with value and object parameters.

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of ASN.1 type GeneralizedTime in its encoded form

object - visit an object of ASN.1 type GeneralizedTime

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1Integer value,
                              java.lang.Object object)
                       throws VisitorException

An integer value that is not part of a NamedNumberList must be of the format SignedNumber: 0 | -n | n. The minus sign must NOT be present if the value of the Number is 0.

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of ASN.1 type INTEGER in its encoded form

object - visit an object of ASN.1 type INTEGER

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1ObjectIdentifier value,
                              java.lang.Object object)
                       throws VisitorException

We always encode the value of an OBJECT-IDENTIFIER using the XMLNumberForm ( dot notation ). i.e.: 1.2.3.4

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of ASN.1 type OBJECT IDENTIFIER in its encoded form

object - visit an object of ASN.1 type OBJECT IDENTIFIER

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1OctetString value,
                              java.lang.Object object)
                       throws VisitorException

Print as a string of hex characters.

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of ASN.1 type OCTET STRING in its encoded form

object - visit an object of ASN.1 type OCTET STRING

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1RelativeOID value,
                              java.lang.Object object)
                       throws VisitorException

We always encode the value of an OBJECT-IDENTIFIER using the XMLNumberForm ( dot notation ). i.e.: 1.2.3.4

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of ASN.1 type RELATIVE_OID in its encoded form

object - visit an object of ASN.1 type RELATIVE_OID

Throws:

VisitorException

visit

public java.lang.Object visit(ASN1OpenType value,
                              java.lang.Object object)
                       throws VisitorException

If the OpenType contains a decoded ASN.1 value, then encode the contained value, otherwise assume that the user has provided a correctly encoded value and copy that value into the output stream.

Specified by:

visit in interface ValueVisitor

Overrides:

visit in class BXEREncoder

Parameters:

value - a value of an ASN.1 type in its encoded form (an open type)

object - visit an object of the ASN.1 open type

Throws:

VisitorException

writeProlog

protected void writeProlog()

The prolog is required to be absent in the encoding.

Overrides:

writeProlog in class BXEREncoder

printDefaultValue

protected void printDefaultValue(ASN1Value value,
                                 Field fieldInfo)
                          throws EncodingException

Overrides:

printDefaultValue in class BXEREncoder

Throws:

EncodingException

printArcs

protected void printArcs(int[] arcs)