/*
 * LinkedRole.java
 */

package edu.stanford.peer.rbtm.credential;

import java.util.*;

/**
 * Represent a LinkedRole.
 */
public class LinkedRole implements EntityExpression
{
    private Role        firstRole;
    private RoleName    secondName;

	public LinkedRole(Role r, RoleName n) { firstRole = r;  secondName = n; }

	public LinkedRole(Role r, String n) { 
		firstRole = r;
		secondName = new SimpleRoleName(n);
	}

	public LinkedRole(Entity issuer, String n1, String n2) {
		firstRole = new Role(issuer, n1);
		secondName = new SimpleRoleName(n2);
	}

	public LinkedRole(String issuer, String n1, String n2) {
		firstRole = new Role(issuer, n1);
		secondName = new SimpleRoleName(n2);
	}

    public int hashCode() {  
        return firstRole.hashCode() * 2 + secondName.hashCode();
    }

    public boolean equals(Object o) {
        return (o instanceof LinkedRole) 
               && firstRole.equals(((LinkedRole)o).firstRole)
               && secondName.equals(((LinkedRole)o).secondName);
    }

    public String toString() {
        return firstRole.toString() + "." + secondName.toString();
    }

    public Role getFirstRole() {
        return firstRole;
    }

    public RoleName getSecondRoleName() {
        return secondName;
    }
    //public Entity getIssuer() { return (Entity)_names.get(0); }

/*
    public LinkedRole(String[] strs) {
        _names = new ArrayList();
        _names.add(new Entity(strs[0]));
        for (int i=1; i<strs.length; i++) {
            _names.add(new SimpleRoleName(strs[i]));
        }
    }

    public LinkedRole(ArrayList strs) {
        _names = new ArrayList();
        _names.add(new Entity((String)strs.get(0)));
        for (int i=1; i<strs.size(); i++) {
            _names.add(new SimpleRoleName((String) strs.get(i)));
        }
    }
    public int hashCode() {
        long value = 0;
        for (int i=0; i<_names.size(); i++) {
            value *= 2;
            value += _names.get(i).hashCode();
        }
        return (int)value;
    }
    public boolean equals(Object o) 
    {
        return (o instanceof LinkedRole) &&
               _names.equals(((LinkedRole)o)._names);
    }
    public String toString() {
        StringBuffer buf = new StringBuffer();
        buf.append("(").append(_names.get(0));
        for (int i=1; i<_names.size(); i++) {
            buf.append("'s ").append(_names.get(i));
        }
        buf.append(")");
        return buf.toString();
    }
    public RoleName getIthRoleName(int i) { return (RoleName)_names.get(i); }

    public RoleName getLastRoleName() { 
        return (RoleName)_names.get(_names.size()-1); 
    }

*/

}