/* 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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