org.apache.geronimo.util.asn1
Class ASN1Sequence

java.lang.Object
  org.apache.geronimo.util.asn1.ASN1Encodable
      org.apache.geronimo.util.asn1.DERObject
          org.apache.geronimo.util.asn1.ASN1Sequence

All Implemented Interfaces:

DEREncodable, DERTags

Direct Known Subclasses:

DERConstructedSequence, DERSequence

public abstract class ASN1Sequence
extends DERObject

Field Summary

Fields inherited from interface org.apache.geronimo.util.asn1.DERTags

APPLICATION, BIT_STRING, BMP_STRING, BOOLEAN, CONSTRUCTED, ENUMERATED, EXTERNAL, GENERAL_STRING, GENERALIZED_TIME, GRAPHIC_STRING, IA5_STRING, INTEGER, NULL, NUMERIC_STRING, OBJECT_IDENTIFIER, OCTET_STRING, PRINTABLE_STRING, SEQUENCE, SEQUENCE_OF, SET, SET_OF, T61_STRING, TAGGED, UNIVERSAL_STRING, UTC_TIME, UTF8_STRING, VIDEOTEX_STRING, VISIBLE_STRING

Constructor Summary

ASN1Sequence()

Method Summary

protected void	addObject(DEREncodable obj)
boolean	equals(Object o)
static ASN1Sequence	getInstance(ASN1TaggedObject obj, boolean explicit) Return an ASN1 sequence from a tagged object.
static ASN1Sequence	getInstance(Object obj) return an ASN1Sequence from the given object.
DEREncodable	getObjectAt(int index) return the object at the sequence postion indicated by index.
Enumeration	getObjects()
int	hashCode()
int	size() return the number of objects in this sequence.

Methods inherited from class org.apache.geronimo.util.asn1.DERObject

toASN1Object

Methods inherited from class org.apache.geronimo.util.asn1.ASN1Encodable

getDERObject, getEncoded

Methods inherited from class java.lang.Object

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

Constructor Detail

ASN1Sequence

public ASN1Sequence()

Method Detail

getInstance

public static ASN1Sequence getInstance(Object obj)

return an ASN1Sequence from the given object.

Parameters:

obj - the object we want converted.

Throws:

IllegalArgumentException - if the object cannot be converted.

getInstance

public static ASN1Sequence getInstance(ASN1TaggedObject obj,
                                       boolean explicit)

Return an ASN1 sequence from a tagged object. There is a special case here, if an object appears to have been explicitly tagged on reading but we were expecting it to be implictly tagged in the normal course of events it indicates that we lost the surrounding sequence - so we need to add it back (this will happen if the tagged object is a sequence that contains other sequences). If you are dealing with implicitly tagged sequences you really should be using this method.

Parameters:

obj - the tagged object.

explicit - true if the object is meant to be explicitly tagged, false otherwise.

Throws:

IllegalArgumentException - if the tagged object cannot be converted.

getObjects

public Enumeration getObjects()

getObjectAt

public DEREncodable getObjectAt(int index)

return the object at the sequence postion indicated by index.

Parameters:

index - the sequence number (starting at zero) of the object

Returns:

the object at the sequence postion indicated by index.

size

public int size()

return the number of objects in this sequence.

Returns:

the number of objects in this sequence.

hashCode

public int hashCode()

Specified by:

hashCode in class DERObject

equals

public boolean equals(Object o)

Specified by:

equals in class DERObject

addObject

protected void addObject(DEREncodable obj)