//-----------------------------------------------------------------------
/**
* Replaces the superclass method to store the state of this class.
* <p>
* Serialization is not one of the JDK's nicest topics. Normal serialization will
* initialise the superclass before the subclass. Sometimes however, this isn't
* what you want, as in this case the <code>put()</code> method on read can be
* affected by subclass state.
* <p>
* The solution adopted here is to serialize the state data of this class in
* this protected method. This method must be called by the
* <code>writeObject()</code> of the first java.io.Serializable subclass.
* <p>
* Subclasses may override if they have a specific field that must be present
* on read before this implementation will work. Generally, the read determines
* what must be serialized here, if anything.
*
* @param out the output stream
*/
protected void dowriteObject(java.io.ObjectOutputStream outJ)
{//throws IOException {
outJ.writeInt(keyType);
outJ.writeInt(valueType);
outJ.writeBoolean(purgeValues);
outJ.writeFloat(loadFactor);
outJ.writeInt(data.Length);
for (MapIterator it = mapIterator(); it.hasNext();)
{
outJ.writeObject(it.next());
outJ.writeObject(it.getValue());
}
outJ.writeObject(null); // null terminate map
// do not call base.doWriteObject() as code there doesn't work for reference map
}
//-----------------------------------------------------------------------
/**
* Removes all mappings where the first key is that specified.
* <p>
* This method removes all the mappings where the <code>MultiKey</code>
* has one or more keys, and the first matches that specified.
*
* @param key1 the first key
* @return true if any elements were removed
*/
public bool removeAll(Object key1)
{
bool modified = false;
MapIterator it = mapIterator();
while (it.hasNext())
{
MultiKey multi = (MultiKey)it.next();
if (multi.size() >= 1 &&
(key1 == null ? multi.getKey(0) == null : key1.equals(multi.getKey(0))))
{
it.remove();
modified = true;
}
}
return(modified);
}
/**
* Removes all mappings where the first four keys are those specified.
* <p>
* This method removes all the mappings where the <code>MultiKey</code>
* has four or more keys, and the first four match those specified.
*
* @param key1 the first key
* @param key2 the second key
* @param key3 the third key
* @param key4 the fourth key
* @return true if any elements were removed
*/
public bool removeAll(Object key1, Object key2, Object key3, Object key4)
{
bool modified = false;
MapIterator it = mapIterator();
while (it.hasNext())
{
MultiKey multi = (MultiKey)it.next();
if (multi.size() >= 4 &&
(key1 == null ? multi.getKey(0) == null : key1.equals(multi.getKey(0))) &&
(key2 == null ? multi.getKey(1) == null : key2.equals(multi.getKey(1))) &&
(key3 == null ? multi.getKey(2) == null : key3.equals(multi.getKey(2))) &&
(key4 == null ? multi.getKey(3) == null : key4.equals(multi.getKey(3))))
{
it.remove();
modified = true;
}
}
return(modified);
}
public Object next()
{
return(iterator.next());
}
