db_dict.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef _DB_DICT_H_
- #define _DB_DICT_H_
- #include "db_dict_abs.h"
- /*
- *
- * "Client"
- *
- * DB_implem*
- * _
- * |_|
- * |_| "Client.5"
- * |_|
- * |_| DB_node* Property*
- * |_| _ _
- * |_|----->|_|---->|_|---+
- * |_| |
- * |_| V
- * DB_implem*
- * _
- * |_|
- * |_|
- * |_|
- * |_| "Client.4.protocol"
- * |_|
- * |_| DB_node* Property*
- * |_| _ _
- * |_|----->|_|---->|_|--->"RTSP"
- * |_|
- * |_|
- *
- * the "Client" (DB_implem*) is the OWNER DB of "Client.5" (DB_node*)
- * and the Property*
- * i.e.
- * client5DB_node->get_db() will return the DB_implem* for Client
- * client5Property->_owner_db is the SAME AS the DB_implem* for Client
- *
- * the "Client.5" (DB_node*) is the OWNER NODE of its Property
- * i.e.
- * client5Property->_owner_node is the SAME AS client5DB_node*
- *
- * the "Client.5" (DB_node*) is the OWNER NODE for "Client.5" (DB_implem*)
- * i.e.
- * client5DB_implem->owner_node() is the SAME AS client5DB_node*
- */
- extern UINT32 hash_torek(const char*key);
- class Property;
- class DB_dict;
- class DB_node;
- class DB_node
- {
- public:
- DB_node() : obj(0), hash(0), next(0), owner_db(0) {}
- ~DB_node() {}
- void key(Keytype k) { hash = k; }
- Keytype get_key() { return hash; }
- void id(Keytype k) { _id = k; }
- Keytype get_id() { return _id; }
- void data(Property* p) { obj = p; }
- Property* get_data() { return obj; }
- void db(DB_implem* ldb) { owner_db = ldb; }
- DB_implem* get_db() { return owner_db; }
- Property* obj;
- private:
- friend class DB_dict;
- Keytype hash;
- Keytype _id;
- DB_node* next;
- DB_implem* owner_db;
- };
- class DB_dict : public DB_implem
- {
- public:
- DB_dict();
- DB_dict(DB_node* parent,
- Keytype nbuckets = 16,
- Keytype(*hash)(const char*) = hash_torek,
- int(*comp)(const char*,const char*) = strcmp);
- ~DB_dict();
- DB_node* add(char* key_str, Property* new_p);
- Keytype del(const char* key_str);
- Keytype del(DB_node* node);
- DB_node* first();
- DB_node* find(char* key_str);
- DB_node* next(DB_node* d);
- DB_node* owner_node() const;
- Keytype hash(const char* str) const;
- Keytype size() const;
- int count() const;
- private:
- HX_RESULT init();
- void strtolower(char* str);
- DB_node** _table;
- };
- inline Keytype
- DB_dict::size() const
- {
- return _size;
- }
- inline int
- DB_dict::count() const
- {
- return _count;
- }
- inline DB_node*
- DB_dict::first()
- {
- for (Keytype i = 0; i < _size; i++)
- if (_table[i])
- return _table[i];
- return 0;
- }
- inline DB_node*
- DB_dict::owner_node() const
- {
- return _owner_node;
- }
- inline Keytype
- DB_dict::hash(const char* str) const
- {
- return _hash(str);
- }
- #endif //_DB_DICT_H_