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 * and Distribution License("CDDL") (collectively, the "License").  You
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 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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// Portions Copyright [2018-2019] [Payara Foundation and/or its affiliates]

package org.glassfish.security.common;

import java.io.Serializable;
import java.security.Principal;

/**
 * This class implements the principal interface.
 *
 * @author Harish Prabandham
 */
public class PrincipalImpl implements Principal, Serializable {

    private static final long serialVersionUID = 373616283817165845L;
    
    /**
     * @serial
     */
    private final String name;

    /**
     * Construct a principal from a string user name.
     * 
     * @param user The string form of the principal name.
     */
    public PrincipalImpl(String user) {
        this.name = user;
    }

    /**
     * This function returns true if the object passed matches the principal represented in this implementation
     * 
     * @param another the Principal to compare with.
     * @return true if the Principal passed is the same as that encapsulated in this object, false otherwise
     */
    @Override
    public boolean equals(Object another) {
        // XXX for bug 4889642: if groupA and userA have
        // the same name, then groupA.equals(userA) return false
        // BUT userA.equals(groupA) return "true"
        if (another instanceof Group) {
            return false;
        }
        
        if (another instanceof PrincipalImpl) {
            Principal p = (Principal) another;
            return getName().equals(p.getName());
        }
        
        return false;
    }

    /**
     * Prints a stringified version of the principal.
     * 
     * @return A java.lang.String object returned by the method getName()
     */
    @Override
    public String toString() {
        return getName();
    }

    /**
     * Returns the hashcode for this Principal object
     * 
     * @return a hashcode for the principal.
     */
    @Override
    public int hashCode() {
        return name.hashCode();
    }

    /**
     * Gets the name of the Principal as a java.lang.String
     * 
     * @return the name of the principal.
     */
    @Override
    public String getName() {
        return name;
    }

}