StrutsCatalog:Provide a multipurpose form that can be instrumented.

IN ORDER TO USE THIS YOU HAVE TO USE CLASSES THAT ARE NOT READILY AVAILABLE.
IF YOU ARE INTERESTED, PLEASE CONTACT ME AT mike@michaelmcgrady.com.

This !BeanMapForm class allows you to instrument your !ActionForms and use them
as dynamic property setters and getters as well.  (The size 89 is chosen because
the series created by x = 2x + 1 stays prime for a considerable time, e.g. 89, 179,
359,etc.  This maximizes the benefits of the lookup algorithms.)  You don't
have to use this class as a form, of course.  You can use it just for the
dynamic property setters and getters and instrument that, if you like, or not.
But, there are lots of reasons to instrument action forms and this allows you to do that.

You instrument such forms, of course, by subclassing !BeanMapForm.  Check Joshua
Bloch'sEffective Java, Item 14 (favor composition over inheritance), p. 71
et seq, to understand the intricacies involved with instrumentation and
collection classes.

Also, cf. http://jakarta.apache.org/struts/faqs/indexedprops.html


public class BeanMapForm
    extends    ActionForm
    implements Map {
  private Map map;

  public BeanMapForm() {
    int size = 89;
    this.map = Collections.synchronizedMap(new HashMap(size));
  }

  public void setMap(Map map) {
    this.map = map;
  }

  public Map getMap() {
    return map;
  }

  public void setProperty(Object key, Object value) {
    map.put(key,value);
  }

  public Object getProperty(Object key) {
    return map.get(key);
  }

  public void       clear()                       { map.clear(); }
  public boolean    containsKey(Object key)       { return map.containsKey(key);}
  public boolean    containsValue(Object value)   { return map.containsValue(value); }
  public Set        entrySet()                    { return map.entrySet(); }
  public boolean    equals(Object object)         { return map.equals(object); }
  public Object     get(Object key)               { return map.get(key); }
  public int        hashCode()                    { return map.hashCode(); }
  public boolean    isEmpty()                     { return map.isEmpty(); }
  public Set        keySet()                      { return map.keySet(); }
  public Object     put(Object key, Object value) { return map.put(key,value); }
  public void       putAll(Map map)               { map.putAll(map); }
  public Object     remove(Object key)            { return map.remove(key); }
  public int        size()                        { return map.size(); }
  public Collection values()                      { return map.values(); }
  public String     toString()                    { return "BeanMapForm[" + map.toString() + "]"; }
} ///;-)

-- Michael !McGrady