UserDetailsImpl.java

package es.alvsanand.webpage.model.security;

import java.io.Serializable;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;


public class UserDetailsImpl implements UserDetails {
    /**
	 * 
	 */
	private static final long serialVersionUID = -257637803931652165L;
	
	private String password;
    private final String username;
    private final Set<GrantedAuthority> authorities;
    private boolean authenticated;

    public UserDetailsImpl(String username, String password, Collection<? extends GrantedAuthority> authorities) {

        if (((username == null) || "".equals(username)) || (password == null)) {
            throw new IllegalArgumentException("Cannot pass null or empty values to constructor");
        }

        this.username = username;
        this.password = password;
        this.authorities = Collections.unmodifiableSet(sortAuthorities(authorities));
    }

    public Collection<GrantedAuthority> getAuthorities() {
        return authorities;
    }

    public String getPassword() {
        return password;
    }

    public String getUsername() {
        return username;
    }

	public boolean isAuthenticated() {
		return authenticated;
	}

	public void setAuthenticated(boolean authenticated) throws IllegalArgumentException {
		this.authenticated = authenticated;
	}

	public String getName() {
		return username;
	}

    private static SortedSet<GrantedAuthority> sortAuthorities(Collection<? extends GrantedAuthority> authorities) {
        if(authorities==null)
        	throw new IllegalArgumentException("Cannot pass a null GrantedAuthority collection");

        SortedSet<GrantedAuthority> sortedAuthorities =
            new TreeSet<GrantedAuthority>(new AuthorityComparator());

        for (GrantedAuthority grantedAuthority : authorities) {
        	if(grantedAuthority==null)
            	throw new IllegalArgumentException("GrantedAuthority list cannot contain any null elements");
            sortedAuthorities.add(grantedAuthority);
        }

        return sortedAuthorities;
    }

    private static class AuthorityComparator implements Comparator<GrantedAuthority>, Serializable {
        /**
		 * 
		 */
		private static final long serialVersionUID = 6478555450565907178L;

		public int compare(GrantedAuthority g1, GrantedAuthority g2) {
            if (g2.getAuthority() == null) {
                return -1;
            }

            if (g1.getAuthority() == null) {
                return 1;
            }

            return g1.getAuthority().compareTo(g2.getAuthority());
        }
    }

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + (authenticated ? 1231 : 1237);
		result = prime * result + ((authorities == null) ? 0 : authorities.hashCode());
		result = prime * result + ((password == null) ? 0 : password.hashCode());
		result = prime * result + ((username == null) ? 0 : username.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		UserDetailsImpl other = (UserDetailsImpl) obj;
		if (authenticated != other.authenticated) {
			return false;
		}
		if (authorities == null) {
			if (other.authorities != null) {
				return false;
			}
		} else if (!authorities.equals(other.authorities)) {
			return false;
		}
		if (password == null) {
			if (other.password != null) {
				return false;
			}
		} else if (!password.equals(other.password)) {
			return false;
		}
		if (username == null) {
			if (other.username != null) {
				return false;
			}
		} else if (!username.equals(other.username)) {
			return false;
		}
		return true;
	}

	@Override
	public String toString() {
		return "UserDetailsImpls [password=" + password + ", username=" + username + ", authorities=" + authorities + ", authenticated="
				+ authenticated + "]";
	}
}