Database usage adjustment for .../webkit

webkit/database/quota_table.cc

 // Copyright (c) 2011 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 "webkit/database/quota_table.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "sql/statement.h"
 
 namespace webkit_database {
 
 bool QuotaTable::Init() {
   // 'Quota' schema:
   //   origin          The origin.
   //   quota           The quota for this origin.
   return db_->DoesTableExist("Quota") ||
       db_->Execute(
            "CREATE TABLE Quota ("
            "origin TEXT NOT NULL PRIMARY KEY, "
            "quota INTEGER NOT NULL)");
 }
 
 int64 QuotaTable::GetOriginQuota(const string16& origin_identifier) {
   sql::Statement statement(db_->GetCachedStatement(
       SQL_FROM_HERE, "SELECT quota FROM Quota WHERE origin = ?"));
-  if (statement.is_valid() &&
-      statement.BindString(0, UTF16ToUTF8(origin_identifier)) &&
-      statement.Step()) {
+  statement.BindString16(0, origin_identifier);
+
+  if (statement.Step()) {
     return statement.ColumnInt64(0);
   }
 
   return -1;
 }
 
 bool QuotaTable::SetOriginQuota(const string16& origin_identifier,
                                 int64 quota) {
   DCHECK(quota >= 0);
 
   // Insert or update the quota for this origin.
   sql::Statement replace_statement(db_->GetCachedStatement(
       SQL_FROM_HERE, "REPLACE INTO Quota VALUES (?, ?)"));
-  if (replace_statement.is_valid() &&
-      replace_statement.BindString(0, UTF16ToUTF8(origin_identifier)) &&
-      replace_statement.BindInt64(1, quota)) {
-    return replace_statement.Run();
-  }
+  replace_statement.BindString16(0, origin_identifier);
+  replace_statement.BindInt64(1, quota);
 
-  return false;
+  return replace_statement.Run();
 }
 
 bool QuotaTable::ClearOriginQuota(const string16& origin_identifier) {
   sql::Statement statement(db_->GetCachedStatement(
       SQL_FROM_HERE, "DELETE FROM Quota WHERE origin = ?"));
-  if (statement.is_valid() &&
-      statement.BindString(0, UTF16ToUTF8(origin_identifier))) {
-    return (statement.Run() && db_->GetLastChangeCount());
-  }
+  statement.BindString16(0, origin_identifier);
 
-  return false;
+  return (statement.Run() && db_->GetLastChangeCount());
 }
 
 }  // namespace webkit_database