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Public API for the Apache MyFaces Trinidad project
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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.myfaces.trinidad.bean.util;

import java.util.AbstractMap;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import javax.faces.context.FacesContext;

import org.apache.myfaces.trinidad.bean.FacesBean;
import org.apache.myfaces.trinidad.bean.PropertyKey;
import org.apache.myfaces.trinidad.bean.PropertyMap;


public class FlaggedPropertyMap extends AbstractMap
                                implements PropertyMap
{
  @Override
  public boolean containsKey(
    Object key)
  {
    PropertyKey pKey = (PropertyKey) key;
    int index = pKey.getIndex();

    if (index >= 0 && index < 64)
    {
      // if we don't have the property, don't search the map
      return ((_flags & (1L << index)) == 0);
    }

    Map map = getPropertyMap(false);
    return (map != null) ? map.containsKey(pKey) : false;
  }

  @Override
  public Object get(
    Object key)
  {
    PropertyKey pKey = (PropertyKey) key;
    int index = pKey.getIndex();

    if (index >= 0 && index < 64)
    {
      // if we don't have the property, don't search the map
      if ((_flags & (1L << index)) == 0)
      {
        return null;
      }
    }

    Map map = getPropertyMap(false);
    return (map != null) ? map.get(key) : null;
  }

  @Override
  public Object put(
    PropertyKey key,
    Object      value)
  {
    int index = key.getIndex();

    if (index >= 0 && index < 64)
    {
      // set the property mask
      _flags |= (1L << index);
    }

    Map map = getPropertyMap(true);
    return map.put(key, value);
  }

  @Override
  public Object remove(
    Object key)
  {
    PropertyKey pKey = (PropertyKey) key;
    int index = pKey.getIndex();

    if (index >= 0 && index < 64)
    {
      long propertyMask = (1L << index);

      // if we don't have the property, don't search the map
      if ((_flags & propertyMask) == 0)
      {
        return null;
      }

      // clear the property mask
      _flags &= ~propertyMask;
    }

    Map map = getPropertyMap(false);
    return (map != null) ? map.remove(key) : null;
  }

  @Override
  public void putAll(Map t)
  {
    Iterator iter = t.keySet().iterator();

    PropertyKey key;

    while(iter.hasNext())
    {
      key = iter.next();
      int index = key.getIndex();

      if (index >= 0 && index < 64)
      {
        long propertyMask = (1L << index);
        // set the property mask
        _flags |= propertyMask;
      }
    }

    Map map = getPropertyMap(true);
    map.putAll(t);
  }

  @Override
  public Set> entrySet()
  {
    Map map = getPropertyMap(false);
    if ((map == null) || map.isEmpty())
      return Collections.emptySet();

    return map.entrySet();
  }

  // TODO Optimize to take advantage of flags.
  @Override
  public Set keySet()
  {
    Map map = getPropertyMap(false);
    if ((map == null) || map.isEmpty())
      return Collections.emptySet();

    return map.keySet();
  }

  @Override
  public Collection