| OLD | NEW |
|---|
| (Empty) |
| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "chrome/browser/autocomplete/network_action_predictor_database.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/file_util.h" | |
| 9 #include "base/logging.h" | |
| 10 #include "base/metrics/histogram.h" | |
| 11 #include "base/stringprintf.h" | |
| 12 #include "base/utf_string_conversions.h" | |
| 13 #include "chrome/browser/profiles/profile.h" | |
| 14 #include "chrome/common/guid.h" | |
| 15 #include "content/public/browser/browser_thread.h" | |
| 16 #include "sql/statement.h" | |
| 17 | |
| 18 namespace { | |
| 19 | |
| 20 const char kNetworkActionPredictorTableName[] = "network_action_predictor"; | |
| 21 const FilePath::CharType kNetworkActionPredictorDatabaseName[] = | |
| 22 FILE_PATH_LITERAL("Network Action Predictor"); | |
| 23 | |
| 24 // The maximum length allowed for strings in the database. | |
| 25 const size_t kMaxDataLength = 2048; | |
| 26 | |
| 27 void BindRowToStatement(const NetworkActionPredictorDatabase::Row& row, | |
| 28 sql::Statement* statement) { | |
| 29 DCHECK(guid::IsValidGUID(row.id)); | |
| 30 statement->BindString(0, row.id); | |
| 31 statement->BindString16(1, row.user_text.substr(0, kMaxDataLength)); | |
| 32 statement->BindString(2, row.url.spec().substr(0, kMaxDataLength)); | |
| 33 statement->BindInt(3, row.number_of_hits); | |
| 34 statement->BindInt(4, row.number_of_misses); | |
| 35 } | |
| 36 | |
| 37 bool StepAndInitializeRow(sql::Statement* statement, | |
| 38 NetworkActionPredictorDatabase::Row* row) { | |
| 39 if (!statement->Step()) | |
| 40 return false; | |
| 41 | |
| 42 row->id = statement->ColumnString(0); | |
| 43 row->user_text = statement->ColumnString16(1); | |
| 44 row->url = GURL(statement->ColumnString(2)); | |
| 45 row->number_of_hits = statement->ColumnInt(3); | |
| 46 row->number_of_misses = statement->ColumnInt(4); | |
| 47 return true; | |
| 48 } | |
| 49 | |
| 50 void LogDatabaseStats(const FilePath& db_path, sql::Connection* db) { | |
| 51 int64 db_size; | |
| 52 bool success = file_util::GetFileSize(db_path, &db_size); | |
| 53 DCHECK(success) << "Failed to get file size for " << db_path.value(); | |
| 54 UMA_HISTOGRAM_MEMORY_KB("NetworkActionPredictor.DatabaseSizeKB", | |
| 55 static_cast<int>(db_size / 1024)); | |
| 56 | |
| 57 sql::Statement count_statement(db->GetUniqueStatement( | |
| 58 base::StringPrintf("SELECT count(id) FROM %s", | |
| 59 kNetworkActionPredictorTableName).c_str())); | |
| 60 if (!count_statement.Step()) | |
| 61 return; | |
| 62 UMA_HISTOGRAM_COUNTS("NetworkActionPredictor.DatabaseRowCount", | |
| 63 count_statement.ColumnInt(0)); | |
| 64 } | |
| 65 | |
| 66 } | |
| 67 | |
| 68 NetworkActionPredictorDatabase::Row::Row() | |
| 69 : number_of_hits(0), | |
| 70 number_of_misses(0) { | |
| 71 } | |
| 72 | |
| 73 NetworkActionPredictorDatabase::Row::Row(const Row::Id& id, | |
| 74 const string16& user_text, | |
| 75 const GURL& url, | |
| 76 int number_of_hits, | |
| 77 int number_of_misses) | |
| 78 : id(id), | |
| 79 user_text(user_text), | |
| 80 url(url), | |
| 81 number_of_hits(number_of_hits), | |
| 82 number_of_misses(number_of_misses) { | |
| 83 } | |
| 84 | |
| 85 NetworkActionPredictorDatabase::NetworkActionPredictorDatabase(Profile* profile) | |
| 86 : db_path_(profile->GetPath().Append(kNetworkActionPredictorDatabaseName)) { | |
| 87 } | |
| 88 | |
| 89 NetworkActionPredictorDatabase::~NetworkActionPredictorDatabase() { | |
| 90 } | |
| 91 | |
| 92 void NetworkActionPredictorDatabase::Initialize() { | |
| 93 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 94 | |
| 95 if (canceled_.IsSet()) | |
| 96 return; | |
| 97 | |
| 98 db_.set_exclusive_locking(); | |
| 99 if (!db_.Open(db_path_)) { | |
| 100 canceled_.Set(); | |
| 101 return; | |
| 102 } | |
| 103 | |
| 104 if (!db_.DoesTableExist(kNetworkActionPredictorTableName)) | |
| 105 CreateTable(); | |
| 106 | |
| 107 LogDatabaseStats(db_path_, &db_); | |
| 108 } | |
| 109 | |
| 110 void NetworkActionPredictorDatabase::GetRow(const Row::Id& id, Row* row) { | |
| 111 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 112 | |
| 113 if (canceled_.IsSet()) | |
| 114 return; | |
| 115 | |
| 116 sql::Statement statement(db_.GetCachedStatement(SQL_FROM_HERE, | |
| 117 base::StringPrintf( | |
| 118 "SELECT * FROM %s WHERE id=?", | |
| 119 kNetworkActionPredictorTableName).c_str())); | |
| 120 statement.BindString(0, id); | |
| 121 | |
| 122 bool success = StepAndInitializeRow(&statement, row); | |
| 123 DCHECK(success) << "Failed to get row " << id << " from " | |
| 124 << kNetworkActionPredictorTableName; | |
| 125 } | |
| 126 | |
| 127 void NetworkActionPredictorDatabase::GetAllRows( | |
| 128 std::vector<NetworkActionPredictorDatabase::Row>* row_buffer) { | |
| 129 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 130 CHECK(row_buffer); | |
| 131 row_buffer->clear(); | |
| 132 | |
| 133 if (canceled_.IsSet()) | |
| 134 return; | |
| 135 | |
| 136 sql::Statement statement(db_.GetCachedStatement(SQL_FROM_HERE, | |
| 137 base::StringPrintf( | |
| 138 "SELECT * FROM %s", kNetworkActionPredictorTableName).c_str())); | |
| 139 | |
| 140 Row row; | |
| 141 while (StepAndInitializeRow(&statement, &row)) | |
| 142 row_buffer->push_back(row); | |
| 143 } | |
| 144 | |
| 145 void NetworkActionPredictorDatabase::AddRow( | |
| 146 const NetworkActionPredictorDatabase::Row& row) { | |
| 147 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 148 | |
| 149 if (canceled_.IsSet()) | |
| 150 return; | |
| 151 | |
| 152 sql::Statement statement(db_.GetCachedStatement(SQL_FROM_HERE, | |
| 153 base::StringPrintf( | |
| 154 "INSERT INTO %s " | |
| 155 "(id, user_text, url, number_of_hits, number_of_misses) " | |
| 156 "VALUES (?,?,?,?,?)", kNetworkActionPredictorTableName).c_str())); | |
| 157 BindRowToStatement(row, &statement); | |
| 158 | |
| 159 bool success = statement.Run(); | |
| 160 DCHECK(success) << "Failed to insert row " << row.id << " into " | |
| 161 << kNetworkActionPredictorTableName; | |
| 162 } | |
| 163 | |
| 164 void NetworkActionPredictorDatabase::UpdateRow( | |
| 165 const NetworkActionPredictorDatabase::Row& row) { | |
| 166 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 167 | |
| 168 if (canceled_.IsSet()) | |
| 169 return; | |
| 170 | |
| 171 sql::Statement statement(db_.GetCachedStatement(SQL_FROM_HERE, | |
| 172 base::StringPrintf( | |
| 173 "UPDATE %s " | |
| 174 "SET id=?, user_text=?, url=?, number_of_hits=?, number_of_misses=? " | |
| 175 "WHERE id=?1", kNetworkActionPredictorTableName).c_str())); | |
| 176 BindRowToStatement(row, &statement); | |
| 177 | |
| 178 statement.Run(); | |
| 179 DCHECK_GT(db_.GetLastChangeCount(), 0); | |
| 180 } | |
| 181 | |
| 182 void NetworkActionPredictorDatabase::DeleteRow(const Row::Id& id) { | |
| 183 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 184 | |
| 185 if (canceled_.IsSet()) | |
| 186 return; | |
| 187 | |
| 188 DeleteRows(std::vector<Row::Id>(1, id)); | |
| 189 } | |
| 190 | |
| 191 void NetworkActionPredictorDatabase::DeleteRows( | |
| 192 const std::vector<Row::Id>& id_list) { | |
| 193 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 194 | |
| 195 if (canceled_.IsSet()) | |
| 196 return; | |
| 197 | |
| 198 sql::Statement statement(db_.GetUniqueStatement(base::StringPrintf( | |
| 199 "DELETE FROM %s WHERE id=?", | |
| 200 kNetworkActionPredictorTableName).c_str())); | |
| 201 | |
| 202 db_.BeginTransaction(); | |
| 203 for (std::vector<Row::Id>::const_iterator it = id_list.begin(); | |
| 204 it != id_list.end(); ++it) { | |
| 205 statement.BindString(0, *it); | |
| 206 statement.Run(); | |
| 207 statement.Reset(true); | |
| 208 } | |
| 209 db_.CommitTransaction(); | |
| 210 } | |
| 211 | |
| 212 void NetworkActionPredictorDatabase::DeleteAllRows() { | |
| 213 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 214 | |
| 215 if (canceled_.IsSet()) | |
| 216 return; | |
| 217 | |
| 218 sql::Statement statement(db_.GetCachedStatement(SQL_FROM_HERE, | |
| 219 base::StringPrintf("DELETE FROM %s", | |
| 220 kNetworkActionPredictorTableName).c_str())); | |
| 221 | |
| 222 statement.Run(); | |
| 223 } | |
| 224 | |
| 225 void NetworkActionPredictorDatabase::BeginTransaction() { | |
| 226 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 227 | |
| 228 if (canceled_.IsSet()) | |
| 229 return; | |
| 230 | |
| 231 db_.BeginTransaction(); | |
| 232 } | |
| 233 | |
| 234 void NetworkActionPredictorDatabase::CommitTransaction() { | |
| 235 CHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::DB)); | |
| 236 | |
| 237 if (canceled_.IsSet()) | |
| 238 return; | |
| 239 | |
| 240 db_.CommitTransaction(); | |
| 241 } | |
| 242 | |
| 243 void NetworkActionPredictorDatabase::OnPredictorDestroyed() { | |
| 244 canceled_.Set(); | |
| 245 } | |
| 246 | |
| 247 void NetworkActionPredictorDatabase::CreateTable() { | |
| 248 bool success = db_.Execute(base::StringPrintf( | |
| 249 "CREATE TABLE %s ( " | |
| 250 "id TEXT PRIMARY KEY, " | |
| 251 "user_text TEXT, " | |
| 252 "url TEXT, " | |
| 253 "number_of_hits INTEGER, " | |
| 254 "number_of_misses INTEGER)", kNetworkActionPredictorTableName).c_str()); | |
| 255 DCHECK(success) << "Failed to create " << kNetworkActionPredictorTableName | |
| 256 << " table."; | |
| 257 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 9610006:
Refactoring, moving and renaming the NetworkActionPredictor. (Closed)
Base URL: http://git.chromium.org/chromium/src.git@master