package edu.stanford.rt.credential;


/**
 * @author Ninghui Li, Sandra Qiu<br>
 * 
 * HashID is the identifier of a <code>DomainSpecification</code> element.
 * It is represented by the "id" attribute of the element.
 *
 */
public class HashID
{
	/** 
     * ApplicationDomain type of hash id 
     */
	static public final int APPLICATION_DOMAIN = 1;
	/** 
     * CredentialDomain type of hash id 
     */
	static public final int CREDENTIAL_DOMAIN = 2;
    /**
     * the hash value for the element.
     */	
	private String hashValue;
    /**
     * type of the hash id.
     */
	private int hashType;
	
	/**
	 * Constructor for HashID
	 */
	public HashID(int hashType, String hashValue)
	{
		this.hashType = hashType;
		this.hashValue = hashValue;
	}
	
	/* (non-Javadoc)
	 * @see java.lang.Object#hashCode()
	 */
	public int hashCode()
	{
		return hashValue.hashCode();
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#equals(Object)
	 */
	public boolean equals(Object id)
	{
        if(! (id instanceof HashID))
            return false;

        HashID hashid = (HashID) id;
		return    this.hashType == hashid.getHashType() 
			  &&   this.hashCode() == hashid.hashCode();
	}
	/**
	 * Returns the hashType.
	 * @return int
	 */
	public int getHashType()
	{
		return hashType;
	}

	/**
	 * Returns the hashValue.
	 * @return String
	 */
	public String getHashValue()
	{
		return hashValue;
	}

	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */
    public String toString()
    {
        return hashValue;
    }
}