SignaturePolicyId.java

/*
 * SignaturePolicyId.java
 * PROJECT: JDigiDoc
 * DESCRIPTION: corresponds to XAdES SignaturePolicyId structure
 * AUTHOR:  Veiko Sinivee, Sunset Software OÜ
 *==================================================
 * Copyright (C) AS Sertifitseerimiskeskus
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * GNU Lesser General Public Licence is available at
 * http://www.gnu.org/copyleft/lesser.html
 *==================================================
 */
package ee.sk.digidoc;
import java.io.Serializable;
import java.util.ArrayList;

/**
 * Models an XML-DSIG/ETSI SignaturePolicyId structure. 
 * @author  Veiko Sinivee
 * @version 1.0
 */
public class SignaturePolicyId implements Serializable
{
	private static final long serialVersionUID = 1L;
	/** SigPolicyId */
	private ObjectIdentifier m_sigPolicyId;
	/** SigPolicyHash - digest alg and hash */
	/** DigestMethod */
	private String m_digestAlg;
	/** DigestValue */
	private byte[] m_digestVal;
	/** SigPolicyQualifiers */
	private ArrayList m_qualifiers;
	
	
	public SignaturePolicyId(ObjectIdentifier oid)
	{
		m_sigPolicyId = oid;
		m_digestAlg = null;
		m_digestVal = null;
		m_qualifiers = null;
	}
	
	
	/**
     * Accessor for ObjectIdentifier content
     * @return value of ObjectIdentifier content
     */
	public ObjectIdentifier getSigPolicyId()
	{
		return m_sigPolicyId;
	}
	
	/**
     * Mutator for ObjectIdentifier content
     * @param oid new value for ObjectIdentifier content
     */    
    public void setSigPolicyId(ObjectIdentifier oid) 
    {
    	m_sigPolicyId = oid;
    }
    
    /**
     * Accessor for DigestAlgorithm element
     * @return value of DigestAlgorithm element
     */
	public String getDigestAlgorithm()
	{
		return m_digestAlg;
	}
	
	/**
     * Mutator for DigestAlgorithm element
     * @param alg new value for DigestAlgorithm element
     */    
    public void setDigestAlgorithm(String alg) 
    {
    	m_digestAlg = alg;
    }
    
    /**
     * Accessor for DigestValue element
     * @return value of DigestValue element
     */
	public byte[] getDigestValue()
	{
		return m_digestVal;
	}
	
	/**
     * Mutator for DigestValue element
     * @param hash new value for DigestValue element
     */    
    public void setDigestValue(byte[] hash) 
    {
    	m_digestVal = hash;
    }
    
	
	/**
     * return the count of SigPolicyQualifier objects
     * @return count of SigPolicyQualifier objects
     */
    public int countSigPolicyQualifiers()
    {
        return ((m_qualifiers == null) ? 0 : m_qualifiers.size());
    }
    
    /**
     * Adds a new SigPolicyQualifier object
     * @param spq new object to be added
     */
    public void addSigPolicyQualifier(SigPolicyQualifier spq)
    {
    	if(m_qualifiers == null)
    		m_qualifiers = new ArrayList();
    	m_qualifiers.add(spq);
    }
    
    /**
     * Retrieves SigPolicyQualifier element with the desired index
     * @param idx SigPolicyQualifier index
     * @return SigPolicyQualifier element or null if not found
     */
    public SigPolicyQualifier getSigPolicyQualifier(int idx)
    {
    	if(m_qualifiers != null && idx < m_qualifiers.size()) {
    		return (SigPolicyQualifier)m_qualifiers.get(idx);
    	}
    	return null; // not found
    }
	
}