Create a class to represent a DOM Storage Database.

sql/statement.h

 // 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.
 
 #ifndef SQL_STATEMENT_H_
 #define SQL_STATEMENT_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 108 matching lines @@
   // Returns the number of output columns in the result.
   int ColumnCount() const;
 
   // Returns the type associated with the given column.
   //
   // Watch out: the type may be undefined if you've done something to cause a
   // "type conversion." This means requesting the value of a column of a type
   // where that type is not the native type. For safety, call ColumnType only
   // on a column before getting the value out in any way.
   ColType ColumnType(int col) const;
+  ColType DeclaredColumnType(int col) const;
 
   // These all take a 0-based argument index.
   bool ColumnBool(int col) const;
   int ColumnInt(int col) const;
   int64 ColumnInt64(int col) const;
   double ColumnDouble(int col) const;
   std::string ColumnString(int col) const;
   string16 ColumnString16(int col) const;
 
   // When reading a blob, you can get a raw pointer to the underlying data,
   // along with the length, or you can just ask us to copy the blob into a
   // vector. Danger! ColumnBlob may return NULL if there is no data!
   int ColumnByteLength(int col) const;
   const void* ColumnBlob(int col) const;
   bool ColumnBlobAsString(int col, std::string* blob);
+  bool ColumnBlobAsString16(int col, string16* val) const;
   bool ColumnBlobAsVector(int col, std::vector<char>* val) const;
   bool ColumnBlobAsVector(int col, std::vector<unsigned char>* val) const;
 
   // Diagnostics --------------------------------------------------------------
 
   // Returns the original text of sql statement. Do not keep a pointer to it.
   const char* GetSQLStatement();
 
  private:
   // This is intended to check for serious errors and report them to the
@@ skipping 27 matching lines @@
 
   // See Succeeded() for what this holds.
   bool succeeded_;
 
   DISALLOW_COPY_AND_ASSIGN(Statement);
 };
 
 }  // namespace sql
 
 #endif  // SQL_STATEMENT_H_