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/* hashmultimap.vala
*
* Copyright (C) 2009 Ali Sabil
*
* 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:
* Ali Sabil <ali.sabil@gmail.com>
*/
/**
* Hash table implementation of the {@link MultiMap} interface.
*/
public class Gee.HashMultiMap<K,V> : AbstractMultiMap<K,V> {
public HashDataFunc<K> key_hash_func {
get { return ((HashMap<K, Set<V>>) _storage_map).key_hash_func; }
}
public EqualDataFunc<K> key_equal_func {
get { return ((HashMap<K, Set<V>>) _storage_map).key_equal_func; }
}
[CCode (notify = false)]
public HashDataFunc<V> value_hash_func { private set; get; }
[CCode (notify = false)]
public EqualDataFunc<V> value_equal_func { private set; get; }
/**
* Constructs a new, empty hash multimap.
*
* If not provided, the functions parameters are requested to the
* {@link Functions} function factory methods.
*
* @param key_hash_func an optional key hash function
* @param key_equal_func an optional key equality testing function
* @param value_hash_func an optional value hash function
* @param value_equal_func an optional value equality testing function
*/
public HashMultiMap (owned HashDataFunc<K>? key_hash_func = null, owned EqualDataFunc<K>? key_equal_func = null,
owned HashDataFunc<V>? value_hash_func = null, owned EqualDataFunc<V>? value_equal_func = null) {
base (new HashMap<K, Set<V>> (key_hash_func, key_equal_func, Functions.get_equal_func_for (typeof (Set))));
if (value_hash_func == null) {
value_hash_func = Functions.get_hash_func_for (typeof (V));
}
if (value_equal_func == null) {
value_equal_func = Functions.get_equal_func_for (typeof (V));
}
this.value_hash_func = value_hash_func;
this.value_equal_func = value_equal_func;
}
protected override Collection<V> create_value_storage () {
return new HashSet<V> (_value_hash_func, _value_equal_func);
}
protected override MultiSet<K> create_multi_key_set () {
return new HashMultiSet<K> (key_hash_func, key_equal_func);
}
protected override EqualDataFunc get_value_equal_func () {
return _value_equal_func;
}
}
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