Attribute

All Implemented Interfaces:

io.anyline.nfc.bouncycastle.asn1.ASN1Encodable , io.anyline.nfc.bouncycastle.util.Encodable
```
public class Attribute
extends ASN1Object
                    
```
RFC 5652: Attribute is a pair of OID (as type identifier) + set of values.
```
Attribute ::= SEQUENCE {
    attrType OBJECT IDENTIFIER,
    attrValues SET OF AttributeValue
}

AttributeValue ::= ANY
```
General rule on values is that same AttributeValue must not be included multiple times into the set. That is, if the value is a SET OF INTEGERs, then having same value repeated is wrong: (1, 1), but different values is OK: (1, 2). Normally the AttributeValue syntaxes are more complicated than that.
General rule of Attribute usage is that the Attributes containers must not have multiple Attribute:s with same attrType (OID) there.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description
`public ASN1ObjectIdentifier`	`attrType`
`public ASN1Set`	`attrValues`

Constructor Summary

Constructors
Constructor	Description
`Attribute(ASN1ObjectIdentifier attrType, ASN1Set attrValues)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`ASN1ObjectIdentifier`	`getAttrType()`
`ASN1Set`	`getAttrValues()`
`static Attribute`	`getInstance(Object o)`	Return an Attribute object from the given object.
`Array<ASN1Encodable>`	`getAttributeValues()`
`ASN1Primitive`	`toASN1Primitive()`	Produce an object suitable for an ASN1OutputStream.

Methods inherited from class io.anyline.nfc.bouncycastle.asn1.ASN1Object
encodeTo, encodeTo, equals, getEncoded, getEncoded, hashCode
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Attribute
```
Attribute(ASN1ObjectIdentifier attrType, ASN1Set attrValues)
```
- Method Detail
  - getAttrType
```
 ASN1ObjectIdentifier getAttrType()
```
  - getAttrValues
```
 ASN1Set getAttrValues()
```
  - getInstance
```
 static Attribute getInstance(Object o)
```
    Return an Attribute object from the given object.
    Accepted inputs:
    null → null
    Attribute object
    ASN1Sequence input formats with Attribute structure inside
    Parameters:
    
    o - the object we want converted.
  - getAttributeValues
```
 Array<ASN1Encodable> getAttributeValues()
```
  - toASN1Primitive
```
 ASN1Primitive toASN1Primitive()
```
    Produce an object suitable for an ASN1OutputStream.