1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_BROWSER_HISTORY_HISTORY_MEMORY_DB_H__
#define CHROME_BROWSER_HISTORY_HISTORY_MEMORY_DB_H__
#include "base/basictypes.h"
#include "chrome/browser/history/url_database.h"
#include "chrome/common/sqlite_compiled_statement.h"
struct sqlite3;
namespace history {
// Class used for a fast in-memory cache of typed URLs. Used for inline
// autocomplete since it is fast enough to be called synchronously as the user
// is typing.
class InMemoryDatabase : public URLDatabase {
public:
InMemoryDatabase();
virtual ~InMemoryDatabase();
// Creates an empty in-memory database.
bool InitFromScratch();
// Initializes the database by directly slurping the data from the given
// file. Conceptually, the InMemoryHistoryBackend should do the populating
// after this object does some common initialization, but that would be
// much slower.
bool InitFromDisk(const std::wstring& history_name);
protected:
// Implemented for URLDatabase.
virtual sqlite3* GetDB();
virtual SqliteStatementCache& GetStatementCache();
private:
// Initializes the database connection, this is the shared code between
// InitFromScratch() and InitFromDisk() above. Returns true on success.
bool InitDB();
// The close scoper will free the database and delete the statement cache in
// the correct order automatically when we are destroyed.
DBCloseScoper db_closer_;
sqlite3* db_;
SqliteStatementCache* statement_cache_;
DISALLOW_EVIL_CONSTRUCTORS(InMemoryDatabase);
};
} // namespace history
#endif // CHROME_BROWSER_HISTORY_HISTORY_MEMORY_DB_H__
|
