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Side by Side Diff: content/common/indexed_db/proxy_webidbcursor_impl.h

Issue 10854081: IndexedDB: Simplify cursor data callbacks. (Closed) Base URL: http://git.chromium.org/chromium/src.git@master
Patch Set: Created 8 years, 4 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 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_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ 5 #ifndef CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_
6 #define CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ 6 #define CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_
7 7
8 #include <deque> 8 #include <deque>
9 #include <vector> 9 #include <vector>
10 10
11 #include "base/basictypes.h" 11 #include "base/basictypes.h"
12 #include "content/common/indexed_db/indexed_db_key.h" 12 #include "content/common/indexed_db/indexed_db_key.h"
13 #include "content/public/common/serialized_script_value.h" 13 #include "content/public/common/serialized_script_value.h"
14 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCallbacks.h" 14 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCallbacks.h"
15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCursor.h" 15 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBCursor.h"
16 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKey.h" 16 #include "third_party/WebKit/Source/WebKit/chromium/public/WebIDBKey.h"
17 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSerialize dScriptValue.h" 17 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebSerialize dScriptValue.h"
18 18
19 class RendererWebIDBCursorImpl : public WebKit::WebIDBCursor { 19 class RendererWebIDBCursorImpl : public WebKit::WebIDBCursor {
20 public: 20 public:
21 explicit RendererWebIDBCursorImpl(int32 idb_cursor_id); 21 explicit RendererWebIDBCursorImpl(int32 idb_cursor_id);
22 virtual ~RendererWebIDBCursorImpl(); 22 virtual ~RendererWebIDBCursorImpl();
23 23
24 // TODO(jsbell): Remove the following three methods after WK92278 rolls.
25 virtual WebKit::WebIDBKey key() const;
26 virtual WebKit::WebIDBKey primaryKey() const;
27 virtual WebKit::WebSerializedScriptValue value() const;
28 virtual void advance(unsigned long count, 24 virtual void advance(unsigned long count,
29 WebKit::WebIDBCallbacks* callback, 25 WebKit::WebIDBCallbacks* callback,
30 WebKit::WebExceptionCode& ec); 26 WebKit::WebExceptionCode& ec);
31 virtual void continueFunction(const WebKit::WebIDBKey& key, 27 virtual void continueFunction(const WebKit::WebIDBKey& key,
32 WebKit::WebIDBCallbacks* callback, 28 WebKit::WebIDBCallbacks* callback,
33 WebKit::WebExceptionCode& ec); 29 WebKit::WebExceptionCode& ec);
34 virtual void deleteFunction(WebKit::WebIDBCallbacks* callback, 30 virtual void deleteFunction(WebKit::WebIDBCallbacks* callback,
35 WebKit::WebExceptionCode& ec); 31 WebKit::WebExceptionCode& ec);
36 virtual void postSuccessHandlerCallback(); 32 virtual void postSuccessHandlerCallback();
37 33
38 // TODO(jsbell): Remove the following method after WK92278 rolls.
39 void SetKeyAndValue(const content::IndexedDBKey& key,
40 const content::IndexedDBKey& primary_key,
41 const content::SerializedScriptValue& value);
42 void SetPrefetchData( 34 void SetPrefetchData(
43 const std::vector<content::IndexedDBKey>& keys, 35 const std::vector<content::IndexedDBKey>& keys,
44 const std::vector<content::IndexedDBKey>& primary_keys, 36 const std::vector<content::IndexedDBKey>& primary_keys,
45 const std::vector<content::SerializedScriptValue>& values); 37 const std::vector<content::SerializedScriptValue>& values);
46 38
47 void CachedContinue(WebKit::WebIDBCallbacks* callbacks); 39 void CachedContinue(WebKit::WebIDBCallbacks* callbacks);
48 void ResetPrefetchCache(); 40 void ResetPrefetchCache();
49 41
50 private: 42 private:
51 int32 idb_cursor_id_; 43 int32 idb_cursor_id_;
52 44
53 // TODO(jsbell): Remove the following three members after WK92278 rolls.
54 content::IndexedDBKey key_;
55 content::IndexedDBKey primary_key_;
56 content::SerializedScriptValue value_;
57
58 // Prefetch cache. 45 // Prefetch cache.
59 std::deque<content::IndexedDBKey> prefetch_keys_; 46 std::deque<content::IndexedDBKey> prefetch_keys_;
60 std::deque<content::IndexedDBKey> prefetch_primary_keys_; 47 std::deque<content::IndexedDBKey> prefetch_primary_keys_;
61 std::deque<content::SerializedScriptValue> prefetch_values_; 48 std::deque<content::SerializedScriptValue> prefetch_values_;
62 49
63 // Number of continue calls that would qualify for a pre-fetch. 50 // Number of continue calls that would qualify for a pre-fetch.
64 int continue_count_; 51 int continue_count_;
65 52
66 // Number of items used from the last prefetch. 53 // Number of items used from the last prefetch.
67 int used_prefetches_; 54 int used_prefetches_;
68 55
69 // Number of onsuccess handlers we are waiting for. 56 // Number of onsuccess handlers we are waiting for.
70 int pending_onsuccess_callbacks_; 57 int pending_onsuccess_callbacks_;
71 58
72 // Number of items to request in next prefetch. 59 // Number of items to request in next prefetch.
73 int prefetch_amount_; 60 int prefetch_amount_;
74 61
75 enum { kPrefetchContinueThreshold = 2 }; 62 enum { kPrefetchContinueThreshold = 2 };
76 enum { kMinPrefetchAmount = 5 }; 63 enum { kMinPrefetchAmount = 5 };
77 enum { kMaxPrefetchAmount = 100 }; 64 enum { kMaxPrefetchAmount = 100 };
78 }; 65 };
79 66
80 #endif // CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_ 67 #endif // CONTENT_COMMON_INDEXED_DB_PROXY_WEBIDBCURSOR_IMPL_H_
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