org.apache.asn1.ber.digester.rules
Class PrimitiveBooleanRule

java.lang.Object
  org.apache.asn1.ber.digester.AbstractRule
      org.apache.asn1.ber.digester.rules.PrimitiveBooleanRule

All Implemented Interfaces:

Rule

public class PrimitiveBooleanRule
extends AbstractRule

A rule to Decode a BER encoded ASN.1 INTEGER into a Java primitive int.

The bytes to form the integer are extracted from the BER value which may arrive in multiple chunks. The individual bytes are temporarily stored within a 4 byte array while incrementing a counter to track the capture. Once gathered the bytes are decoded into a int in the finish

As a side effect once the decode is complete, the primitive value is pushed onto the primitive int stack to be utilized by other rules later. If there is a loss of precision where the ASN.1 INTEGER is larger or smaller than the maximum or minimum value of a Java primitive integer an exception is thrown.

Version:

$Rev: 157644 $

Author:

Apache Directory Project

Field Summary

private boolean	octetSet boolean flag to determine if we have read the single octet
private TagEnum	tag the tag this rule accepts
private byte	value the octet for the Java primitive boolean

Constructor Summary

PrimitiveBooleanRule()
Creates a default primitive boolean decoding rule that only accepts tags of UniversalTag.BOOLEAN.

PrimitiveBooleanRule(TagEnum tag)
Creates a default primitive integer decoding rule that only accepts tags of UniversalTag.INTEGER.

Method Summary

void	finish() Called when the tlv has been completely consumed.
void	length(int length) Called when the length of a TLV is encountered.
void	tag(int id, boolean isPrimitive, TypeClass typeClass) Called when the tag of the matched TLV is encountered.
void	value(java.nio.ByteBuffer buf) Called when a peice of the value is available.

Methods inherited from class org.apache.asn1.ber.digester.AbstractRule

getDigester, setDigester

Methods inherited from class java.lang.Object

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

Field Detail

value

private byte value

the octet for the Java primitive boolean

octetSet

private boolean octetSet

boolean flag to determine if we have read the single octet

tag

private final TagEnum tag

the tag this rule accepts

Constructor Detail

PrimitiveBooleanRule

public PrimitiveBooleanRule()

Creates a default primitive boolean decoding rule that only accepts tags of UniversalTag.BOOLEAN.

PrimitiveBooleanRule

public PrimitiveBooleanRule(TagEnum tag)

Creates a default primitive integer decoding rule that only accepts tags of UniversalTag.INTEGER.

Method Detail

tag

public void tag(int id,
                boolean isPrimitive,
                TypeClass typeClass)

Description copied from interface: Rule

Called when the tag of the matched TLV is encountered.

Specified by:

tag in interface Rule

Overrides:

tag in class AbstractRule

Parameters:

id - the tag's id

isPrimitive - whether tlv is primitive or constructed

typeClass - the tag's type class

length

public void length(int length)

Description copied from interface: Rule

Called when the length of a TLV is encountered.

Specified by:

length in interface Rule

Overrides:

length in class AbstractRule

Parameters:

length - the length in bytes of the value

value

public void value(java.nio.ByteBuffer buf)

Description copied from interface: Rule

Called when a peice of the value is available.

Specified by:

value in interface Rule

Overrides:

value in class AbstractRule

Parameters:

buf - a portion of the value

finish

public void finish()

Description copied from interface: Rule

Called when the tlv has been completely consumed.

Specified by:

finish in interface Rule

Overrides:

finish in class AbstractRule