Refactoring AutocompleteActionPredictor Database.

chrome/browser/predictors/predictor_table_base.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/predictors/predictor_table_base.h"
+
+#include "base/logging.h"
+#include "content/public/browser/browser_thread.h"
+#include "sql/connection.h"
+
+using content::BrowserThread;
+
+namespace predictors {
+
+PredictorTableBase::PredictorTableBase() : db_(NULL) {
+}
+
+PredictorTableBase::~PredictorTableBase() {
+}
+
+void PredictorTableBase::Initialize(sql::Connection* db) {
+  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
+  db_ = db;
+  CreateTableIfNonExistent();
+}
+
+sql::Connection* PredictorTableBase::DB() {
+  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
+  return db_;
+}
+
+void PredictorTableBase::ResetDB() {
+  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
+  db_ = NULL;
+}
+
+bool PredictorTableBase::CantAccessDatabase() {
+  CHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
+  return cancelled_.IsSet() || !db_;
+}
+
+}  // namespace predictors