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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozStorageSQLFunctions_h
#define mozStorageSQLFunctions_h
#include "sqlite3.h"
#include "nscore.h"
namespace mozilla {
namespace storage {
/**
* Registers the functions declared here with the specified database.
*
* @param aDB
* The database we'll be registering the functions with.
* @return the SQLite status code indicating success or failure.
*/
int registerFunctions(sqlite3* aDB);
////////////////////////////////////////////////////////////////////////////////
//// Predefined Functions
/**
* Overridden function to perform the SQL functions UPPER and LOWER. These
* support unicode, which the default implementations do not do.
*
* @param aCtx
* The sqlite_context that this function is being called on.
* @param aArgc
* The number of arguments the function is being called with.
* @param aArgv
* An array of the arguments the functions is being called with.
*/
void caseFunction(sqlite3_context* aCtx, int aArgc, sqlite3_value** aArgv);
/**
* Overridden function to perform the SQL function LIKE. This supports unicode,
* which the default implementation does not do.
*
* @param aCtx
* The sqlite_context that this function is being called on.
* @param aArgc
* The number of arguments the function is being called with.
* @param aArgv
* An array of the arguments the functions is being called with.
*/
void likeFunction(sqlite3_context* aCtx, int aArgc, sqlite3_value** aArgv);
/**
* An implementation of the Levenshtein Edit Distance algorithm for use in
* Sqlite queries.
*
* @param aCtx
* The sqlite_context that this function is being called on.
* @param aArgc
* The number of arguments the function is being called with.
* @param aArgv
* An array of the arguments the functions is being called with.
*/
void levenshteinDistanceFunction(sqlite3_context* aCtx, int aArgc,
sqlite3_value** aArgv);
/**
* An alternative string length function that uses XPCOM string classes for
* string length calculation.
*
* @param aCtx
* The sqlite_context that this function is being called on.
* @param aArgc
* The number of arguments the function is being called with.
* @param aArgv
* An array of the arguments the functions is being called with.
*/
void utf16LengthFunction(sqlite3_context* aCtx, int aArgc,
sqlite3_value** aArgv);
} // namespace storage
} // namespace mozilla
#endif // mozStorageSQLFunctions_h
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