/*
* Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.quercus.env;
import com.caucho.quercus.QuercusRuntimeException;
import com.caucho.quercus.program.JavaClassDef;
import java.util.*;
/**
* Represents a marshalled Map argument.
*/
public class JavaMapAdapter<K,V>
extends JavaAdapter<Map<K,V>>
{
/**
*
*/
private static final long serialVersionUID = 1L;
private Map<K,V> _map;
private long _nextAvailableIndex;
public JavaMapAdapter(Env env, Map<K,V> map)
{
this(env, map, env.getJavaClassDefinition(map.getClass()));
}
public JavaMapAdapter(Env env, Map<K,V> map, JavaClassDef def)
{
super(env, map, def);
_map = map;
updateNextAvailableIndex();
}
/**
* Clears the array
*/
@Override
public void clear()
{
_map.clear();
_nextAvailableIndex = 0;
}
public int size()
{
return _map.size();
}
/**
* Converts to a java object.
*/
@SuppressWarnings("unchecked")
@Override
public <T> T toJavaObject(Env env, Class<T> type)
{
if (type.isAssignableFrom(_map.getClass())) {
return (T)_map;
}
else {
env.warning(L.l("Can't assign {0} to {1}",
_map.getClass().getName(), type.getName()));
return null;
}
}
/**
* Copy for assignment.
*/
@Override
public Value copy()
{
try {
return new JavaMapAdapter<K,V>(getEnv(), _map, getClassDef());
}
catch (Exception e) {
throw new QuercusRuntimeException(e);
}
}
/**
* Copy for serialization
*/
@Override
public Value copy(Env env, IdentityHashMap<Value,Value> map)
{
return new JavaMapAdapter<K,V>(env, _map, getClassDef());
}
/**
* Returns the size.
*/
@Override
public int getSize()
{
return size();
}
/**
* Gets a new value.
*/
@Override
public Value get(Value key)
{
Object obj = _map.get(key.toJavaObject());
if (obj != null)
return wrapJava(_map.get(key.toJavaObject()));
else
return UnsetValue.UNSET;
}
/**
* Removes a value.
*/
@Override
public Value remove(Value key)
{
updateNextAvailableIndex();
if (key.isLongConvertible() || key instanceof BooleanValue) {
//if (key instanceof LongValue) {
long pos = key.toLong();
Object value = _map.remove(Long.valueOf(pos));
if (value != null) {
if (pos + 1 == _nextAvailableIndex)
updateNextAvailableIndex();
return wrapJava(value);
}
}
else {
Object value = _map.remove(key.toJavaObject());
if (value != null)
return wrapJava(value);
}
return UnsetValue.UNSET;
}
/**
* Creatse a tail index.
*/
@Override
public Value createTailKey()
{
updateNextAvailableIndex();
return LongValue.create(_nextAvailableIndex);
}
/**
* Adds a new value.
*/
@Override
@SuppressWarnings("unchecked")
public Value putImpl(Value key, Value value)
{
K keyObject;
if (key.isLongConvertible() || key instanceof BooleanValue) {
keyObject = (K)Long.valueOf(key.toLong());
}
else {
keyObject = (K)key.toJavaObject();
}
Value val = wrapJava(_map.put(keyObject, (V)value.toJavaObject()));
updateNextAvailableIndex(keyObject);
return val;
}
/**
* Returns the corresponding valeu if this array contains the given key
*
* @param key the key to search for in the array
*
* @return the value if it is found in the array, NULL otherwise
*/
public Value containsKey(Value key)
{
return BooleanValue.create(_map.containsKey(key.toJavaObject()));
}
@Override
public Iterator<Value> getKeyIterator(Env env)
{
return new KeyIterator();
}
@Override
public Iterator<Value> getValueIterator(Env env)
{
return new ValueIterator();
}
@Override
public Iterator<Map.Entry<Value, Value>> getIterator(Env env)
{
return new MapIterator();
}
/**
* Returns a set of all the of the entries.
*/
@Override
public Set<Map.Entry<Value,Value>> entrySet()
{
return new MapSet();
}
/**
* Returns a collection of the values.
*/
@Override
@SuppressWarnings("unchecked")
public Set<Map.Entry> objectEntrySet()
{
return (Set<Map.Entry>)_map.entrySet();
}
/**
* Returns a collection of the values.
*/
@Override
public Collection<Value> values()
{
return new ValueCollection();
}
/**
* Updates _nextAvailableIndex on a remove of the highest value
*/
private void updateNextAvailableIndex()
{
_nextAvailableIndex = 0;
for (Object key : _map.keySet()) {
updateNextAvailableIndex(key);
}
}
/**
* Updates _nextAvailableIndex.
*/
private void updateNextAvailableIndex(Object objectKey)
{
if (objectKey instanceof Long) {
long key = ((Long)objectKey).longValue();
if (_nextAvailableIndex <= key)
_nextAvailableIndex = key + 1;
}
}
public class MapSet
extends AbstractSet<Map.Entry<Value,Value>>
{
MapSet()
{
}
@Override
public int size()
{
return getSize();
}
@Override
public Iterator<Map.Entry<Value,Value>> iterator()
{
return new MapIterator();
}
}
public class MapIterator
implements Iterator<Map.Entry<Value,Value>>
{
private Iterator<Map.Entry<K,V>> _iterator;
public MapIterator()
{
_iterator = _map.entrySet().iterator();
}
public boolean hasNext()
{
return _iterator.hasNext();
}
public Map.Entry<Value,Value> next()
{
Map.Entry entry = _iterator.next();
Value key = wrapJava(entry.getKey());
Value value = wrapJava(entry.getValue());
return new ArrayValue.Entry(key, value);
}
public void remove()
{
throw new UnsupportedOperationException();
}
}
public class ValueCollection
extends AbstractCollection<Value>
{
ValueCollection()
{
}
@Override
public int size()
{
return getSize();
}
@Override
public Iterator<Value> iterator()
{
return new ValueIterator();
}
}
public class ValueIterator
implements Iterator<Value>
{
private Iterator _iterator;
public ValueIterator()
{
_iterator = _map.values().iterator();
}
public boolean hasNext()
{
return _iterator.hasNext();
}
public Value next()
{
return wrapJava(_iterator.next());
}
public void remove()
{
throw new UnsupportedOperationException();
}
}
public class KeyIterator
implements Iterator<Value>
{
private Iterator _iterator;
public KeyIterator()
{
_iterator = _map.keySet().iterator();
}
public boolean hasNext()
{
return _iterator.hasNext();
}
public Value next()
{
return wrapJava(_iterator.next());
}
public void remove()
{
throw new UnsupportedOperationException();
}
}
}