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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 #include "webkit/browser/dom_storage/dom_storage_database.h" | 5 #include "webkit/browser/dom_storage/dom_storage_database.h" |
6 | 6 |
7 #include "base/bind.h" | 7 #include "base/bind.h" |
8 #include "base/file_util.h" | 8 #include "base/file_util.h" |
9 #include "base/logging.h" | 9 #include "base/logging.h" |
10 #include "sql/statement.h" | 10 #include "sql/statement.h" |
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71 return; | 71 return; |
72 | 72 |
73 sql::Statement statement(db_->GetCachedStatement(SQL_FROM_HERE, | 73 sql::Statement statement(db_->GetCachedStatement(SQL_FROM_HERE, |
74 "SELECT * from ItemTable")); | 74 "SELECT * from ItemTable")); |
75 DCHECK(statement.is_valid()); | 75 DCHECK(statement.is_valid()); |
76 | 76 |
77 while (statement.Step()) { | 77 while (statement.Step()) { |
78 base::string16 key = statement.ColumnString16(0); | 78 base::string16 key = statement.ColumnString16(0); |
79 base::string16 value; | 79 base::string16 value; |
80 statement.ColumnBlobAsString16(1, &value); | 80 statement.ColumnBlobAsString16(1, &value); |
81 (*result)[key] = NullableString16(value, false); | 81 (*result)[key] = base::NullableString16(value, false); |
82 } | 82 } |
83 known_to_be_empty_ = result->empty(); | 83 known_to_be_empty_ = result->empty(); |
84 } | 84 } |
85 | 85 |
86 bool DomStorageDatabase::CommitChanges(bool clear_all_first, | 86 bool DomStorageDatabase::CommitChanges(bool clear_all_first, |
87 const ValuesMap& changes) { | 87 const ValuesMap& changes) { |
88 if (!LazyOpen(!changes.empty())) { | 88 if (!LazyOpen(!changes.empty())) { |
89 // If we're being asked to commit changes that will result in an | 89 // If we're being asked to commit changes that will result in an |
90 // empty database, we return true if the database file doesn't exist. | 90 // empty database, we return true if the database file doesn't exist. |
91 return clear_all_first && changes.empty() && | 91 return clear_all_first && changes.empty() && |
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102 return false; | 102 return false; |
103 known_to_be_empty_ = true; | 103 known_to_be_empty_ = true; |
104 } | 104 } |
105 | 105 |
106 bool did_delete = false; | 106 bool did_delete = false; |
107 bool did_insert = false; | 107 bool did_insert = false; |
108 ValuesMap::const_iterator it = changes.begin(); | 108 ValuesMap::const_iterator it = changes.begin(); |
109 for(; it != changes.end(); ++it) { | 109 for(; it != changes.end(); ++it) { |
110 sql::Statement statement; | 110 sql::Statement statement; |
111 base::string16 key = it->first; | 111 base::string16 key = it->first; |
112 NullableString16 value = it->second; | 112 base::NullableString16 value = it->second; |
113 if (value.is_null()) { | 113 if (value.is_null()) { |
114 statement.Assign(db_->GetCachedStatement(SQL_FROM_HERE, | 114 statement.Assign(db_->GetCachedStatement(SQL_FROM_HERE, |
115 "DELETE FROM ItemTable WHERE key=?")); | 115 "DELETE FROM ItemTable WHERE key=?")); |
116 statement.BindString16(0, key); | 116 statement.BindString16(0, key); |
117 did_delete = true; | 117 did_delete = true; |
118 } else { | 118 } else { |
119 statement.Assign(db_->GetCachedStatement(SQL_FROM_HERE, | 119 statement.Assign(db_->GetCachedStatement(SQL_FROM_HERE, |
120 "INSERT INTO ItemTable VALUES (?,?)")); | 120 "INSERT INTO ItemTable VALUES (?,?)")); |
121 statement.BindString16(0, key); | 121 statement.BindString16(0, key); |
122 statement.BindBlob(1, value.string().data(), | 122 statement.BindBlob(1, value.string().data(), |
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282 sql::Statement statement(db_->GetCachedStatement(SQL_FROM_HERE, | 282 sql::Statement statement(db_->GetCachedStatement(SQL_FROM_HERE, |
283 "SELECT * FROM ItemTable")); | 283 "SELECT * FROM ItemTable")); |
284 DCHECK(statement.is_valid()); | 284 DCHECK(statement.is_valid()); |
285 | 285 |
286 // Need to migrate from TEXT value column to BLOB. | 286 // Need to migrate from TEXT value column to BLOB. |
287 // Store the current database content so we can re-insert | 287 // Store the current database content so we can re-insert |
288 // the data into the new V2 table. | 288 // the data into the new V2 table. |
289 ValuesMap values; | 289 ValuesMap values; |
290 while (statement.Step()) { | 290 while (statement.Step()) { |
291 base::string16 key = statement.ColumnString16(0); | 291 base::string16 key = statement.ColumnString16(0); |
292 NullableString16 value(statement.ColumnString16(1), false); | 292 base::NullableString16 value(statement.ColumnString16(1), false); |
293 values[key] = value; | 293 values[key] = value; |
294 } | 294 } |
295 | 295 |
296 sql::Transaction migration(db_.get()); | 296 sql::Transaction migration(db_.get()); |
297 return migration.Begin() && | 297 return migration.Begin() && |
298 db_->Execute("DROP TABLE ItemTable") && | 298 db_->Execute("DROP TABLE ItemTable") && |
299 CreateTableV2() && | 299 CreateTableV2() && |
300 CommitChanges(false, values) && | 300 CommitChanges(false, values) && |
301 migration.Commit(); | 301 migration.Commit(); |
302 } | 302 } |
303 | 303 |
304 void DomStorageDatabase::Close() { | 304 void DomStorageDatabase::Close() { |
305 db_.reset(NULL); | 305 db_.reset(NULL); |
306 } | 306 } |
307 | 307 |
308 } // namespace dom_storage | 308 } // namespace dom_storage |
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