~ubuntu-branches/ubuntu/wily/libhibernate3-java/wily-proposed

package org.hibernate.test.hql;

 

import java.io.Serializable;

import java.util.HashMap;

 

/**

 * Mimic a JDK 5 enum.

 *

 * @author Steve Ebersole

 */

public class Classification implements Serializable, Comparable {

 

        public static final Classification COOL = new Classification( "COOL", 0 );

        public static final Classification LAME = new Classification( "LAME", 1 );

 

        private static final HashMap INSTANCES = new HashMap();

        static {

                INSTANCES.put( COOL.name, COOL );

                INSTANCES.put( LAME.name, LAME );

        }

 

        private final String name;

        private final int ordinal;

        private final int hashCode;

 

        private Classification(String name, int ordinal) {

                this.name = name;

                this.ordinal = ordinal;

 

                int hashCode = name.hashCode();

                hashCode = 29 * hashCode + ordinal;

                this.hashCode = hashCode;

        }

 

        public String name() {

                return name;

        }

 

        public int ordinal() {

                return ordinal;

        }

 

        public boolean equals(Object obj) {

                return compareTo( obj ) == 0;

        }

 

        public int compareTo(Object o) {

                int otherOrdinal = ( ( Classification ) o ).ordinal;

                if ( ordinal == otherOrdinal ) {

                        return 0;

                }

                else if ( ordinal > otherOrdinal ) {

                        return 1;

                }

                else {

                        return -1;

                }

        }

 

        public int hashCode() {

                return hashCode;

        }

 

        public static Classification valueOf(String name) {

                return ( Classification ) INSTANCES.get( name );

        }

 

        public static Classification valueOf(Integer ordinal) {

                if ( ordinal == null ) {

                        return null;

                }

                switch ( ordinal.intValue() ) {

                        case 0: return COOL;

                        case 1: return LAME;

                        default: throw new IllegalArgumentException( "unknown classification ordinal [" + ordinal + "]" );

                }

        }

}