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/* readonlymultimap.vala
*
* Copyright (C) 2013 Maciej Piechotka
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library 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. See the GNU
* Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Author:
* Maciej Piechotka <uzytkownik2@gmail.com>
*/
using GLib;
/**
* Read-only view for {@link MultiMap} collections.
*
* This class decorates any class which implements the {@link MultiMap}
* interface by making it read only. Any method which normally modify data will
* throw an error.
*
* @see MultiMap
*/
internal class Gee.ReadOnlyMultiMap<K, V> : Object, MultiMap<K, V> {
/**
* Constructs a read-only multi-set that mirrors the content of the specified
* list.
*
* @param multiset the multi-set to decorate.
*/
public ReadOnlyMultiMap (MultiMap<K, V> multimap) {
this._multimap = multimap;
}
/**
* {@inheritDoc}
*/
public int size { get { return _multimap.size; } }
/**
* {@inheritDoc}
*/
public bool read_only { get { return true; } }
/**
* {@inheritDoc}
*/
public Set<K> get_keys () {
return _multimap.get_keys ();
}
/**
* {@inheritDoc}
*/
public MultiSet<K> get_all_keys () {
return _multimap.get_all_keys ();
}
/**
* {@inheritDoc}
*/
public Collection<V> get_values () {
return _multimap.get_values ();
}
/**
* {@inheritDoc}
*/
public bool contains (K key) {
return _multimap.contains (key);
}
/**
* {@inheritDoc}
*/
public new Collection<V> get (K key) {
return _multimap.get (key);
}
/**
* {@inheritDoc}
*/
public new void set (K key, V value) {
assert_not_reached ();
}
/**
* {@inheritDoc}
*/
public bool remove (K key, V value) {
assert_not_reached ();
}
/**
* {@inheritDoc}
*/
public bool remove_all (K key) {
assert_not_reached ();
}
/**
* {@inheritDoc}
*/
public void clear () {
assert_not_reached ();
}
/**
* {@inheritDoc}
*/
public MapIterator<K, V> map_iterator () {
return new ReadOnlyMap.MapIterator<K, V> (_multimap.map_iterator ());
}
/**
* {@inheritDoc}
*/
public virtual new MultiMap<K, V> read_only_view { owned get { return this; } }
private MultiMap<K, V> _multimap;
}
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