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Side by Side Diff: content/browser/indexed_db/indexed_db_cursor.h

Issue 19117005: IndexedDB: Coding conventions and cleanup (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Created 7 years, 5 months ago
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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_ 5 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_
6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_ 6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_
7 7
8 #include <string> 8 #include <string>
9 9
10 #include "base/basictypes.h" 10 #include "base/basictypes.h"
11 #include "base/memory/ref_counted.h" 11 #include "base/memory/ref_counted.h"
12 #include "base/memory/scoped_ptr.h" 12 #include "base/memory/scoped_ptr.h"
13 #include "content/browser/indexed_db/indexed_db_backing_store.h" 13 #include "content/browser/indexed_db/indexed_db_backing_store.h"
14 #include "content/browser/indexed_db/indexed_db_database.h" 14 #include "content/browser/indexed_db/indexed_db_database.h"
15 #include "content/common/indexed_db/indexed_db_key_range.h" 15 #include "content/common/indexed_db/indexed_db_key_range.h"
16 16
17 namespace content { 17 namespace content {
18 18
19 class IndexedDBTransaction; 19 class IndexedDBTransaction;
20 20
21 class CONTENT_EXPORT IndexedDBCursor 21 class CONTENT_EXPORT IndexedDBCursor
22 : NON_EXPORTED_BASE(public base::RefCounted<IndexedDBCursor>) { 22 : NON_EXPORTED_BASE(public base::RefCounted<IndexedDBCursor>) {
23 public: 23 public:
24 static scoped_refptr<IndexedDBCursor> Create( 24 IndexedDBCursor(scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
25 scoped_ptr<IndexedDBBackingStore::Cursor> cursor, 25 indexed_db::CursorType cursor_type,
26 indexed_db::CursorType cursor_type, 26 IndexedDBDatabase::TaskType task_type,
27 IndexedDBTransaction* transaction) { 27 IndexedDBTransaction* transaction);
28 return make_scoped_refptr(
29 new IndexedDBCursor(cursor.Pass(),
30 cursor_type,
31 IndexedDBDatabase::NORMAL_TASK,
32 transaction));
33 }
34 static scoped_refptr<IndexedDBCursor> Create(
35 scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
36 indexed_db::CursorType cursor_type,
37 IndexedDBDatabase::TaskType task_type,
38 IndexedDBTransaction* transaction) {
39 return make_scoped_refptr(new IndexedDBCursor(
40 cursor.Pass(), cursor_type, task_type, transaction));
41 }
42 28
43 // IndexedDBCursor
44 void Advance(uint32 count, scoped_refptr<IndexedDBCallbacks> callbacks); 29 void Advance(uint32 count, scoped_refptr<IndexedDBCallbacks> callbacks);
45 void Continue(scoped_ptr<IndexedDBKey> key, 30 void Continue(scoped_ptr<IndexedDBKey> key,
46 scoped_refptr<IndexedDBCallbacks> callbacks); 31 scoped_refptr<IndexedDBCallbacks> callbacks);
47 void PrefetchContinue(int number_to_fetch, 32 void PrefetchContinue(int number_to_fetch,
48 scoped_refptr<IndexedDBCallbacks> callbacks); 33 scoped_refptr<IndexedDBCallbacks> callbacks);
49 void PrefetchReset(int used_prefetches, int unused_prefetches); 34 void PrefetchReset(int used_prefetches, int unused_prefetches);
50 35
51 const IndexedDBKey& key() const { return cursor_->key(); } 36 const IndexedDBKey& key() const { return cursor_->key(); }
52 const IndexedDBKey& primary_key() const { return cursor_->primary_key(); } 37 const IndexedDBKey& primary_key() const { return cursor_->primary_key(); }
53 std::string* Value() const { 38 std::string* Value() const {
54 return (cursor_type_ == indexed_db::CURSOR_KEY_ONLY) ? NULL 39 return (cursor_type_ == indexed_db::CURSOR_KEY_ONLY) ? NULL
55 : cursor_->Value(); 40 : cursor_->Value();
56 } 41 }
57 void Close(); 42 void Close();
58 43
59 private: 44 private:
60 friend class base::RefCounted<IndexedDBCursor>; 45 friend class base::RefCounted<IndexedDBCursor>;
61 46
62 IndexedDBCursor(scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
63 indexed_db::CursorType cursor_type,
64 IndexedDBDatabase::TaskType task_type,
65 IndexedDBTransaction* transaction);
66 ~IndexedDBCursor(); 47 ~IndexedDBCursor();
67 48
68 class CursorIterationOperation; 49 class CursorIterationOperation;
69 class CursorAdvanceOperation; 50 class CursorAdvanceOperation;
70 class CursorPrefetchIterationOperation; 51 class CursorPrefetchIterationOperation;
71 52
72 IndexedDBDatabase::TaskType task_type_; 53 IndexedDBDatabase::TaskType task_type_;
73 indexed_db::CursorType cursor_type_; 54 indexed_db::CursorType cursor_type_;
74 const scoped_refptr<IndexedDBTransaction> transaction_; 55 const scoped_refptr<IndexedDBTransaction> transaction_;
75 56
76 // Must be destroyed before transaction_. 57 // Must be destroyed before transaction_.
77 scoped_ptr<IndexedDBBackingStore::Cursor> cursor_; 58 scoped_ptr<IndexedDBBackingStore::Cursor> cursor_;
78 // Must be destroyed before transaction_. 59 // Must be destroyed before transaction_.
79 scoped_ptr<IndexedDBBackingStore::Cursor> saved_cursor_; 60 scoped_ptr<IndexedDBBackingStore::Cursor> saved_cursor_;
80 61
81 bool closed_; 62 bool closed_;
82 }; 63 };
83 64
84 } // namespace content 65 } // namespace content
85 66
86 #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_ 67 #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_
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