nsFts3Tokenizer.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* 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/. */

#include "nsFts3Tokenizer.h"

#include "nsGlodaRankerFunction.h"

#include "nsIFts3Tokenizer.h"

#include "mozIStorageConnection.h"

#include "mozIStorageStatement.h"

#include "nsString.h"

extern "C" void sqlite3Fts3PorterTokenizerModule(

    sqlite3_tokenizer_module const** ppModule);

extern "C" void glodaRankFunc(sqlite3_context* pCtx, int nVal,

                              sqlite3_value** apVal);

NS_IMPL_ISUPPORTS(nsFts3Tokenizer, nsIFts3Tokenizer)

nsFts3Tokenizer::nsFts3Tokenizer() {}

nsFts3Tokenizer::~nsFts3Tokenizer() {}

NS_IMETHODIMP

nsFts3Tokenizer::RegisterTokenizer(mozIStorageConnection* connection) {

  nsresult rv;

  nsCOMPtr<mozIStorageStatement> selectStatement;

  // -- register the tokenizer

  rv = connection->CreateStatement("SELECT fts3_tokenizer(?1, ?2)"_ns,

                                   getter_AddRefs(selectStatement));

  NS_ENSURE_SUCCESS(rv, rv);

  const sqlite3_tokenizer_module* module = nullptr;

  sqlite3Fts3PorterTokenizerModule(&module);

  if (!module) return NS_ERROR_FAILURE;

  rv = selectStatement->BindUTF8StringByIndex(0, "mozporter"_ns);

  NS_ENSURE_SUCCESS(rv, rv);

  rv = selectStatement->BindBlobByIndex(1, (uint8_t*)&module, sizeof(module));

  NS_ENSURE_SUCCESS(rv, rv);

  bool hasMore;

  rv = selectStatement->ExecuteStep(&hasMore);

  NS_ENSURE_SUCCESS(rv, rv);

  // -- register the ranking function

  nsCOMPtr<mozIStorageFunction> func = new nsGlodaRankerFunction();

  NS_ENSURE_TRUE(func, NS_ERROR_OUT_OF_MEMORY);

  rv = connection->CreateFunction("glodaRank"_ns,

                                  -1,  // variable argument support

                                  func);

  NS_ENSURE_SUCCESS(rv, rv);

  return rv;