//$Id: PersistentSortedMap.java 7714 2005-08-01 16:29:33Z oneovthafew $
package org.hibernate.collection;
import java.io.Serializable;
import java.util.Collection;
import java.util.Comparator;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import org.hibernate.EntityMode;
import org.hibernate.HibernateException;
import org.hibernate.engine.SessionImplementor;
import org.hibernate.persister.collection.BasicCollectionPersister;
/**
* A persistent wrapper for a <tt>java.util.SortedMap</tt>. Underlying
* collection is a <tt>TreeMap</tt>.
*
* @see java.util.TreeMap
* @author <a href="mailto:[email protected]">e</a>
*/
public class PersistentSortedMap extends PersistentMap implements SortedMap {
protected Comparator comparator;
protected Serializable snapshot(BasicCollectionPersister persister, EntityMode entityMode) throws HibernateException {
TreeMap clonedMap = new TreeMap(comparator);
Iterator iter = map.entrySet().iterator();
while ( iter.hasNext() ) {
Map.Entry e = (Map.Entry) iter.next();
clonedMap.put( e.getKey(), persister.getElementType().deepCopy( e.getValue(), entityMode, persister.getFactory() ) );
}
return clonedMap;
}
public PersistentSortedMap(SessionImplementor session) {
super(session);
}
public void setComparator(Comparator comparator) {
this.comparator = comparator;
}
public PersistentSortedMap(SessionImplementor session, SortedMap map) {
super(session, map);
comparator = map.comparator();
}
public PersistentSortedMap() {} //needed for SOAP libraries, etc
/**
* @see PersistentSortedMap#comparator()
*/
public Comparator comparator() {
return comparator;
}
/**
* @see PersistentSortedMap#subMap(Object, Object)
*/
public SortedMap subMap(Object fromKey, Object toKey) {
read();
SortedMap m = ( (SortedMap) map ).subMap(fromKey, toKey);
return new SortedSubMap(m);
}
/**
* @see PersistentSortedMap#headMap(Object)
*/
public SortedMap headMap(Object toKey) {
read();
SortedMap m;
m = ( (SortedMap) map ).headMap(toKey);
return new SortedSubMap(m);
}
/**
* @see PersistentSortedMap#tailMap(Object)
*/
public SortedMap tailMap(Object fromKey) {
read();
SortedMap m;
m = ( (SortedMap) map ).tailMap(fromKey);
return new SortedSubMap(m);
}
/**
* @see PersistentSortedMap#firstKey()
*/
public Object firstKey() {
read();
return ( (SortedMap) map ).firstKey();
}
/**
* @see PersistentSortedMap#lastKey()
*/
public Object lastKey() {
read();
return ( (SortedMap) map ).lastKey();
}
class SortedSubMap implements SortedMap {
SortedMap submap;
SortedSubMap(SortedMap m) {
this.submap = m;
}
// from Map
public int size() {
return submap.size();
}
public boolean isEmpty() {
return submap.isEmpty();
}
public boolean containsKey(Object key) {
return submap.containsKey(key);
}
public boolean containsValue(Object key) {
return submap.containsValue(key) ;
}
public Object get(Object key) {
return submap.get(key);
}
public Object put(Object key, Object value) {
write();
return submap.put(key, value);
}
public Object remove(Object key) {
write();
return submap.remove(key);
}
public void putAll(Map other) {
write();
submap.putAll(other);
}
public void clear() {
write();
submap.clear();
}
public Set keySet() {
return new SetProxy( submap.keySet() );
}
public Collection values() {
return new SetProxy( submap.values() );
}
public Set entrySet() {
return new EntrySetProxy( submap.entrySet() );
}
// from SortedMap
public Comparator comparator() {
return submap.comparator();
}
public SortedMap subMap(Object fromKey, Object toKey) {
SortedMap m;
m = submap.subMap(fromKey, toKey);
return new SortedSubMap( m );
}
public SortedMap headMap(Object toKey) {
SortedMap m;
m = submap.headMap(toKey);
return new SortedSubMap(m);
}
public SortedMap tailMap(Object fromKey) {
SortedMap m;
m = submap.tailMap(fromKey);
return new SortedSubMap(m);
}
public Object firstKey() {
return submap.firstKey();
}
public Object lastKey() {
return submap.lastKey();
}
}
}
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