зеркало из https://github.com/mozilla/gecko-dev.git
284 строки
8.3 KiB
C++
284 строки
8.3 KiB
C++
/* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_places_SQLFunctions_h_
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#define mozilla_places_SQLFunctions_h_
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/**
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* This file contains functions that Places adds to the database handle that can
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* be accessed by SQL queries.
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*/
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#include "mozIStorageFunction.h"
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#include "mozilla/Attributes.h"
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class mozIStorageConnection;
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namespace mozilla {
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namespace places {
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////////////////////////////////////////////////////////////////////////////////
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//// AutoComplete Matching Function
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/**
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* This function is used to determine if a given set of data should match an
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* AutoComplete query.
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*
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* In SQL, you'd use it in the WHERE clause like so:
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* WHERE AUTOCOMPLETE_MATCH(aSearchString, aURL, aTitle, aTags, aVisitCount,
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* aTyped, aBookmark, aOpenPageCount, aMatchBehavior,
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* aSearchBehavior)
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*
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* @param aSearchString
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* The string to compare against.
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* @param aURL
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* The URL to test for an AutoComplete match.
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* @param aTitle
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* The title to test for an AutoComplete match.
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* @param aTags
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* The tags to test for an AutoComplete match.
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* @param aVisitCount
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* The number of visits aURL has.
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* @param aTyped
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* Indicates if aURL is a typed URL or not. Treated as a boolean.
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* @param aBookmark
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* Indicates if aURL is a bookmark or not. Treated as a boolean.
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* @param aOpenPageCount
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* The number of times aURL has been registered as being open. (See
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* mozIPlacesAutoComplete::registerOpenPage.)
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* @param aMatchBehavior
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* The match behavior to use for this search.
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* @param aSearchBehavior
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* A bitfield dictating the search behavior.
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*/
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class MatchAutoCompleteFunction MOZ_FINAL : public mozIStorageFunction
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_MOZISTORAGEFUNCTION
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/**
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* Registers the function with the specified database connection.
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*
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* @param aDBConn
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* The database connection to register with.
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*/
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static nsresult create(mozIStorageConnection *aDBConn);
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private:
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/**
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* Argument Indexes
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*/
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static const PRUint32 kArgSearchString = 0;
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static const PRUint32 kArgIndexURL = 1;
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static const PRUint32 kArgIndexTitle = 2;
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static const PRUint32 kArgIndexTags = 3;
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static const PRUint32 kArgIndexVisitCount = 4;
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static const PRUint32 kArgIndexTyped = 5;
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static const PRUint32 kArgIndexBookmark = 6;
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static const PRUint32 kArgIndexOpenPageCount = 7;
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static const PRUint32 kArgIndexMatchBehavior = 8;
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static const PRUint32 kArgIndexSearchBehavior = 9;
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static const PRUint32 kArgIndexLength = 10;
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/**
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* Typedefs
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*/
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typedef bool (*searchFunctionPtr)(const nsDependentCSubstring &aToken,
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const nsACString &aSourceString);
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typedef nsACString::const_char_iterator const_char_iterator;
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/**
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* Obtains the search function to match on.
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*
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* @param aBehavior
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* The matching behavior to use defined by one of the
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* mozIPlacesAutoComplete::MATCH_* values.
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* @return a pointer to the function that will perform the proper search.
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*/
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static searchFunctionPtr getSearchFunction(PRInt32 aBehavior);
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/**
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* Tests if aSourceString starts with aToken.
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*
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* @param aToken
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* The string to search for.
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* @param aSourceString
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* The string to search.
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* @return true if found, false otherwise.
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*/
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static bool findBeginning(const nsDependentCSubstring &aToken,
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const nsACString &aSourceString);
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/**
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* Tests if aSourceString starts with aToken in a case sensitive way.
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*
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* @param aToken
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* The string to search for.
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* @param aSourceString
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* The string to search.
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* @return true if found, false otherwise.
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*/
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static bool findBeginningCaseSensitive(const nsDependentCSubstring &aToken,
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const nsACString &aSourceString);
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/**
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* Searches aSourceString for aToken anywhere in the string in a case-
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* insensitive way.
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*
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* @param aToken
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* The string to search for.
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* @param aSourceString
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* The string to search.
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* @return true if found, false otherwise.
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*/
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static bool findAnywhere(const nsDependentCSubstring &aToken,
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const nsACString &aSourceString);
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/**
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* Tests if aToken is found on a word boundary in aSourceString.
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*
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* @param aToken
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* The string to search for.
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* @param aSourceString
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* The string to search.
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* @return true if found, false otherwise.
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*/
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static bool findOnBoundary(const nsDependentCSubstring &aToken,
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const nsACString &aSourceString);
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/**
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* Fixes a URI's spec such that it is ready to be searched. This includes
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* unescaping escaped characters and removing certain specs that we do not
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* care to search for.
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*
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* @param aURISpec
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* The spec of the URI to prepare for searching.
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* @param aMatchBehavior
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* The matching behavior to use defined by one of the
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* mozIPlacesAutoComplete::MATCH_* values.
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* @param _fixedSpec
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* An out parameter that is the fixed up string.
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*/
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static void fixupURISpec(const nsCString &aURISpec, PRInt32 aMatchBehavior,
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nsCString &_fixedSpec);
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};
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////////////////////////////////////////////////////////////////////////////////
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//// Frecency Calculation Function
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/**
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* This function is used to calculate frecency for a page.
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*
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* In SQL, you'd use it in when setting frecency like:
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* SET frecency = CALCULATE_FRECENCY(place_id).
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* Optional parameters must be passed in if the page is not yet in the database,
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* otherwise they will be fetched from it automatically.
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*
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* @param pageId
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* The id of the page. Pass -1 if the page is being added right now.
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* @param [optional] typed
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* Whether the page has been typed in. Default is false.
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* @param [optional] fullVisitCount
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* Count of all the visits (All types). Default is 0.
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* @param [optional] isBookmarked
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* Whether the page is bookmarked. Default is false.
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*/
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class CalculateFrecencyFunction MOZ_FINAL : public mozIStorageFunction
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_MOZISTORAGEFUNCTION
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/**
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* Registers the function with the specified database connection.
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*
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* @param aDBConn
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* The database connection to register with.
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*/
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static nsresult create(mozIStorageConnection *aDBConn);
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};
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/**
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* SQL function to generate a GUID for a place or bookmark item. This is just
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* a wrapper around GenerateGUID in Helpers.h.
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*
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* @return a guid for the item.
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*/
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class GenerateGUIDFunction MOZ_FINAL : public mozIStorageFunction
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_MOZISTORAGEFUNCTION
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/**
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* Registers the function with the specified database connection.
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*
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* @param aDBConn
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* The database connection to register with.
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*/
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static nsresult create(mozIStorageConnection *aDBConn);
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};
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/**
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* SQL function to unreverse the rev_host of a page.
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*
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* @param rev_host
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* The rev_host value of the page.
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*
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* @return the unreversed host of the page.
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*/
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class GetUnreversedHostFunction MOZ_FINAL : public mozIStorageFunction
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_MOZISTORAGEFUNCTION
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/**
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* Registers the function with the specified database connection.
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*
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* @param aDBConn
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* The database connection to register with.
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*/
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static nsresult create(mozIStorageConnection *aDBConn);
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};
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////////////////////////////////////////////////////////////////////////////////
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//// Fixup URL Function
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/**
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* Make a given URL more suitable for searches, by removing common prefixes
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* such as "www."
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*
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* @param url
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* A URL.
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* @return
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* The same URL, with redundant parts removed.
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*/
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class FixupURLFunction MOZ_FINAL : public mozIStorageFunction
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_MOZISTORAGEFUNCTION
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/**
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* Registers the function with the specified database connection.
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*
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* @param aDBConn
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* The database connection to register with.
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*/
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static nsresult create(mozIStorageConnection *aDBConn);
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};
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} // namespace places
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} // namespace storage
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#endif // mozilla_places_SQLFunctions_h_
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