Application: gvSIG desktop » Library: org.gvsig.tools

package org.gvsig.tools.util;

import java.util.Collections;

import java.util.Iterator;

/**

 *

 * @author jjdelcerro

 */

public interface UnmodifiableBasicSet<V> extends UnmodifiableBasicCollection<V> {

    default public boolean contains(V value) {

        Iterator<V> it = this.iterator();

        while( it.hasNext() ) {

            V v = it.next();

            if( v == value ) {

                return true;

            }

            if( v!=null && value!=null ) {

                if( v.equals(value) ) {

                    return true;

                }

            }

        }

        return false;

    }

    public final UnmodifiableBasicSet EMPTY_UNMODIFIABLEBASICSET = new UnmodifiableBasicSet() {

        @Override

        public boolean isEmpty() {

            return true;

        }

        @Override

        public int size() {

            return 0;

        }

        @Override

        public Iterator iterator() {

            return Collections.EMPTY_LIST.iterator();

        }

        @Override

        public boolean contains(Object value) {

            return false;

        }

    };

}