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The Bouncy Castle Java APIs for CMS, PKCS, EAC, TSP, CMP, CRMF, OCSP, and certificate generation. This jar contains APIs for JDK 1.5 and up. The APIs can be used in conjunction with a JCE/JCA provider such as the one provided with the Bouncy Castle Cryptography APIs.

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package org.bouncycastle.asn1.x509.qualified;

import java.util.Enumeration;

import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DERSequence;

/**
 * The QCStatement object.
 *  * QCStatement ::= SEQUENCE {
 *   statementId        OBJECT IDENTIFIER,
 *   statementInfo      ANY DEFINED BY statementId OPTIONAL} 
 * 
 */

public class QCStatement 
    extends ASN1Object
    implements ETSIQCObjectIdentifiers, RFC3739QCObjectIdentifiers
{
    ASN1ObjectIdentifier qcStatementId;
    ASN1Encodable        qcStatementInfo;

    public static QCStatement getInstance(
        Object obj)
    {
        if (obj instanceof QCStatement)
        {
            return (QCStatement)obj;
        }
        if (obj != null)
        {
            return new QCStatement(ASN1Sequence.getInstance(obj));            
        }
        
        return null;
    }    
    
    private QCStatement(
        ASN1Sequence seq)
    {
        Enumeration e = seq.getObjects();

        // qcStatementId
        qcStatementId = ASN1ObjectIdentifier.getInstance(e.nextElement());
        // qcstatementInfo
        if (e.hasMoreElements())
        {
            qcStatementInfo = (ASN1Encodable) e.nextElement();
        }
    }    
    
    public QCStatement(
        ASN1ObjectIdentifier qcStatementId)
    {
        this.qcStatementId = qcStatementId;
        this.qcStatementInfo = null;
    }
    
    public QCStatement(
        ASN1ObjectIdentifier qcStatementId,
        ASN1Encodable       qcStatementInfo)
    {
        this.qcStatementId = qcStatementId;
        this.qcStatementInfo = qcStatementInfo;
    }    
        
    public ASN1ObjectIdentifier getStatementId()
    {
        return qcStatementId;
    }
    
    public ASN1Encodable getStatementInfo()
    {
        return qcStatementInfo;
    }

    public ASN1Primitive toASN1Primitive()
    {
        ASN1EncodableVector seq = new ASN1EncodableVector(2);
        seq.add(qcStatementId);       
        
        if (qcStatementInfo != null)
        {
            seq.add(qcStatementInfo);
        }

        return new DERSequence(seq);
    }
}