home *** CD-ROM | disk | FTP | other *** search
Java Source | 1997-03-14 | 2.8 KB | 111 lines |
- // Copyright(c) 1997 ObjectSpace, Inc.
-
- package COM.objectspace.jgl;
-
- import java.util.Dictionary;
- import java.util.Enumeration;
-
- /**
- * Map is the abstract class that in implemented by all JGL maps.
- * <p>
- * This abstract class was deprecated because it wasn't deemed to give
- * enough value for the added complexity. No functionality is lost from the
- * concrete classes as Map is effectively just an interface.
- * <p>
- * @deprecated
- * @see COM.objectspace.jgl.HashMap
- * @see COM.objectspace.jgl.OrderedMap
- * @version 2.0.2
- * @author ObjectSpace, Inc.
- */
-
- public abstract class Map extends Dictionary implements Container
- {
- /**
- * Return the number of key/value pairs that match a particular key.
- * @param key The key to match against.
- */
- public abstract int count( Object key );
-
- /**
- * Return the number of values that match a given object.
- * @param value The value to match against.
- */
- public abstract int countValues( Object value );
-
- /**
- * Return an Enumeration of all my keys that are associated with a particular value.
- * @param value The value to match.
- */
- public abstract Enumeration keys( Object value );
-
- /**
- * Return an Enumeration of all my values that are associated with a particular key.
- * @param key The key to match.
- */
- public abstract Enumeration values( Object key );
-
- //
- // The following methods are all from the Container interface.
- // They are listed here again to avoid a compiler bug.
- //
-
- /**
- * Return a shallow copy of myself.
- */
- public abstract Object clone();
-
- /**
- * Return a string that describes me.
- */
- public abstract String toString();
-
- /**
- * Return true if I'm equal to a specified object.
- * @param object The object to compare myself against.
- * @return true if I'm equal to the specified object.
- */
- public abstract boolean equals( Object object );
-
- /**
- * Return the number of objects that I contain.
- */
- public abstract int size();
-
- /**
- * Return the maximum number of objects that I can contain.
- */
- public abstract int maxSize();
-
- /**
- * Return true if I contain no objects.
- */
- public abstract boolean isEmpty();
-
- /**
- * Remove all of my objects.
- */
- public abstract void clear();
-
- /**
- * Return an Enumeration of the components in this container
- */
- public abstract Enumeration elements();
-
- /**
- * Return an iterator positioned at my first item.
- */
- public abstract ForwardIterator start();
-
- /**
- * Return an iterator positioned immediately after my last item.
- */
- public abstract ForwardIterator finish();
-
- /**
- * Add an object to myself. If appropriate, return the object that it replaced, otherwise
- * return null.
- */
- public abstract Object add( Object object );
- }
-