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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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 "chrome/browser/meta_table_helper.h" | 5 #include "chrome/browser/meta_table_helper.h" |
| 6 | 6 |
| 7 #include "base/logging.h" | 7 #include "base/logging.h" |
| 8 #include "base/string_util.h" | 8 #include "base/string_util.h" |
| 9 #include "chrome/common/sqlite_utils.h" | 9 #include "chrome/common/sqlite_utils.h" |
| 10 | 10 |
| 11 // Key used in our meta table for version numbers. | 11 // Key used in our meta table for version numbers. |
| 12 static const char kVersionKey[] = "version"; | 12 static const char kVersionKey[] = "version"; |
| 13 static const char kCompatibleVersionKey[] = "last_compatible_version"; | 13 static const char kCompatibleVersionKey[] = "last_compatible_version"; |
| 14 | 14 |
| 15 // static | 15 // static |
| 16 void MetaTableHelper::PrimeCache(const std::string& db_name, sqlite3* db) { | 16 void MetaTableHelper::PrimeCache(const std::string& db_name, sqlite3* db) { |
| 17 // A statement must be open for the preload command to work. If the meta | 17 // A statement must be open for the preload command to work. If the meta |
| 18 // table doesn't exist, it probably means this is a new database and there | 18 // table doesn't exist, it probably means this is a new database and there |
| 19 // is nothing to preload (so it's OK we do nothing). | 19 // is nothing to preload (so it's OK we do nothing). |
| 20 SQLStatement dummy; | 20 SQLStatement dummy; |
| 21 if (!DoesSqliteTableExist(db, db_name.c_str(), "meta")) | 21 if (!DoesSqliteTableExist(db, db_name.c_str(), "meta")) |
| 22 return; | 22 return; |
| 23 std::string sql("SELECT * from "); | 23 std::string sql("SELECT * from "); |
| 24 appendMetaTableName(db_name, &sql); | 24 appendMetaTableName(db_name, &sql); |
| 25 if (dummy.prepare(db, sql.c_str()) != SQLITE_OK) | 25 if (dummy.prepare(db, sql.c_str()) != SQLITE_OK) |
| 26 return; | 26 return; |
| 27 if (dummy.step() != SQLITE_ROW) | 27 if (dummy.step() != SQLITE_ROW) |
| 28 return; | 28 return; |
| 29 | 29 |
| 30 sqlite3Preload(db); | 30 // TODO(jar): Temporary removal of the following optimization... be sure to |
| 31 // put it back in RSN (if we verify that it was not causing crashes). |
| 32 // sqlite3Preload(db); |
| 31 } | 33 } |
| 32 | 34 |
| 33 MetaTableHelper::MetaTableHelper() : db_(NULL) { | 35 MetaTableHelper::MetaTableHelper() : db_(NULL) { |
| 34 } | 36 } |
| 35 | 37 |
| 36 MetaTableHelper::~MetaTableHelper() { | 38 MetaTableHelper::~MetaTableHelper() { |
| 37 } | 39 } |
| 38 | 40 |
| 39 bool MetaTableHelper::Init(const std::string& db_name, | 41 bool MetaTableHelper::Init(const std::string& db_name, |
| 40 int version, | 42 int version, |
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| 176 sql.append(" WHERE key = ?"); | 178 sql.append(" WHERE key = ?"); |
| 177 if (statement->prepare(db_, sql.c_str()) != SQLITE_OK) { | 179 if (statement->prepare(db_, sql.c_str()) != SQLITE_OK) { |
| 178 NOTREACHED() << sqlite3_errmsg(db_); | 180 NOTREACHED() << sqlite3_errmsg(db_); |
| 179 return false; | 181 return false; |
| 180 } | 182 } |
| 181 statement->bind_string(0, key); | 183 statement->bind_string(0, key); |
| 182 if (statement->step() != SQLITE_ROW) | 184 if (statement->step() != SQLITE_ROW) |
| 183 return false; | 185 return false; |
| 184 return true; | 186 return true; |
| 185 } | 187 } |
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