com.objsys.asn1j.runtime
Class Asn1CharSet

java.lang.Object
  com.objsys.asn1j.runtime.Asn1CharSet

Direct Known Subclasses:

Asn1CharRange, Asn1DiscreteCharSet

public abstract class Asn1CharSet
extends java.lang.Object

This is the base class for representing character sets that are defined in ASN.1 permitted alphabet constraints.

Field Summary

protected int	mABitsPerChar This variable holds number of bits-per-character (PER aligned).
protected int	mUBitsPerChar This variable holds number of bits-per-character (PER unaligned).

Constructor Summary

protected

Asn1CharSet(int nchars) This constructor sets the number of bits-per-character values based on the given number of characters in the character set.

Method Summary

abstract int	getCharAtIndex(int index) This method will fetch the character from the permitted alphabet at the given index.
abstract int	getCharIndex(int charValue) This method will determine the index of the given character within the permitted alphabet character set.
abstract int	getMaxValue() This method will determine the maximum value of the given character within the permitted alphabet character set.
int	getNumBitsPerChar(boolean aligned) This method will return the number of bits-per-character.
abstract boolean	validate(java.lang.String s) This method will validate a character string by comparing its contents to the character set.

Methods inherited from class java.lang.Object

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

Field Detail

mABitsPerChar

protected int mABitsPerChar

This variable holds number of bits-per-character (PER aligned).

mUBitsPerChar

protected int mUBitsPerChar

This variable holds number of bits-per-character (PER unaligned).

Constructor Detail

Asn1CharSet

protected Asn1CharSet(int nchars)

This constructor sets the number of bits-per-character values based on the given number of characters in the character set.

Parameters:

nchars - Number of characters in the character set

Method Detail

getCharAtIndex

public abstract int getCharAtIndex(int index)
                            throws Asn1ConsVioException

This method will fetch the character from the permitted alphabet at the given index.

Parameters:

index - Index of character within the character set

Returns:

Character at given index

Throws:

Asn1ConsVioException - Index not within define range

getCharIndex

public abstract int getCharIndex(int charValue)
                          throws Asn1ConsVioException

This method will determine the index of the given character within the permitted alphabet character set.

Parameters:

charValue - Character value to search for

Returns:

Index of character

Throws:

Asn1ConsVioException - Character not found in set

getMaxValue

public abstract int getMaxValue()

This method will determine the maximum value of the given character within the permitted alphabet character set.

Returns:

Upper Bound Character or Character with max int value

getNumBitsPerChar

public int getNumBitsPerChar(boolean aligned)

This method will return the number of bits-per-character.

Parameters:

aligned - Boolean value indicating whether number of aligned (true) or unaligned (false) characters should be returned.

validate

public abstract boolean validate(java.lang.String s)

This method will validate a character string by comparing its contents to the character set. If a character string contains characters that are not in the character set, this method will return false. Otherwise it returns true.

Parameters:

s - The string to be validated.

Returns:

False if the string contains invalid characters; true otherwise.