gecko/storage/src/mozStoragePrivateHelpers.h

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 * 1.1 (the "License"); you may not use this file except in compliance with
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 * The Original Code is Oracle Corporation code.
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 * The Initial Developer of the Original Code is
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 * Contributor(s):
 *   Vladimir Vukicevic <vladimir.vukicevic@oracle.com>
 *   Shawn Wilsher <me@shawnwilsher.com>
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#ifndef _mozStoragePrivateHelpers_h_
#define _mozStoragePrivateHelpers_h_

/**
 * This file contains convenience methods for mozStorage.
 */

#include "sqlite3.h"
#include "nsIVariant.h"
#include "mozStorage.h"
#include "jsapi.h"

class mozIStorageStatement;

namespace mozilla {
namespace storage {

////////////////////////////////////////////////////////////////////////////////
//// Macros

#define ENSURE_INDEX_VALUE(aIndex, aCount) \
  NS_ENSURE_TRUE(aIndex < aCount, NS_ERROR_INVALID_ARG)

////////////////////////////////////////////////////////////////////////////////
//// Functions

/**
 * Converts a SQLite return code to an nsresult return code.
 *
 * @param aSQLiteResultCode
 *        The SQLite return code to convert.
 * @returns the corresponding nsresult code for aSQLiteResultCode.
 */
nsresult convertResultCode(int aSQLiteResultCode);

/**
 * Checks the performance of a SQLite statement and logs a warning with
 * NS_WARNING.  Currently this only checks the number of sort operations done
 * on a statement, and if more than zero have been done, the statement can be
 * made faster with the careful use of an index.
 *
 * @param aStatement
 *        The sqlite3_stmt object to check.
 */
void checkAndLogStatementPerformance(sqlite3_stmt *aStatement);

/**
 *
 */
bool
bindJSValue(JSContext *aCtx,
            mozIStorageStatement *aStatement,
            int aIdx,
            jsval aValue);

} // namespace storage
} // namespace mozilla

#endif // _mozStoragePrivateHelpers_h_