mirror of
https://github.com/silverstripe/silverstripe-mssql
synced 2024-10-22 08:05:53 +02:00
latest updates for MSSQL
This commit is contained in:
Geoff Munn
parent
6352ea3f18
commit
b219062d4d
@ -153,6 +153,18 @@ class MSSQLDatabase extends Database {
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return $this->query("SELECT @@IDENTITY FROM \"$table\"")->value();
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}
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function getPrimaryKey($tableName){
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$indexes=DB::query("EXEC sp_helpindex '$tableName';");
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$primary_key='';
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foreach($indexes as $this_index){
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if($this_index['index_keys']=='ID'){
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$primary_key=$this_index['index_name'];
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break;
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}
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}
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return $primary_key;
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}
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/**
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* OBSOLETE: Get the ID for the next new record for the table.
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*
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@ -471,13 +483,14 @@ class MSSQLDatabase extends Database {
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//We need the name of the primary key for this table:
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//TODO: There MUST be a better way of doing this.... shurely....
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//$primary_key=$this->query("SELECT [name] FROM syscolumns WHERE [id] IN (SELECT [id] FROM sysobjects WHERE [name] = '$tableName') AND colid IN (SELECT SIK.colid FROM sysindexkeys SIK JOIN sysobjects SO ON SIK.[id] = SO.[id] WHERE SIK.indid = 1 AND SO.[name] = '$tableName');")->first();
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$indexes=DB::query("EXEC sp_helpindex '$tableName';");
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foreach($indexes as $this_index){
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if($this_index['index_keys']=='ID'){
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$primary_key=$this_index['index_name'];
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break;
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}
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}
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//$indexes=DB::query("EXEC sp_helpindex '$tableName';");
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//foreach($indexes as $this_index){
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// if($this_index['index_keys']=='ID'){
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// $primary_key=$this_index['index_name'];
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// break;
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// }
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//}
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$primary_key=$this->getPrimaryKey($tableName);
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//First, we need to see if a full text search already exists:
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$result=$this->query("SELECT object_id FROM sys.fulltext_indexes WHERE object_id=object_id('$tableName');")->first();
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@ -832,52 +845,80 @@ class MSSQLDatabase extends Database {
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*/
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public function sqlQueryToString(SQLQuery $sqlQuery) {
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if (!$sqlQuery->from) return '';
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//TODO: remove me when the limit function supposedly works
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$sqlQuery->limit='';
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//Get the limit and offset
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$limit='';
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$offset='0';
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if(is_array($sqlQuery->limit)){
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$limit=$sqlQuery->limit['limit'];
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if(isset($sqlQuery->limit['start']))
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$offset=$sqlQuery->limit['start'];
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} else {
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//could be a comma delimited string
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$bits=explode(',', $sqlQuery->limit);
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$limit=trim($bits[0]);
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if(isset($bits[1]))
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$offset=trim($bits[1]);
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}
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$text='';
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if($sqlQuery->limit) {
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$text='SELECT * FROM ( SELECT ROW_NUMBER() OVER (';
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$limitText=' ORDER BY ' . $sqlQuery->orderby . ') AS Number,';
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}
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$distinct = $sqlQuery->distinct ? "DISTINCT " : "";
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if($sqlQuery->delete) {
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$text = "DELETE ";
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} else if($sqlQuery->select) {
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$text = "SELECT $distinct" . implode(", ", $sqlQuery->select);
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//NOTE: Assumes that deletes don't have limit/offset clauses
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if($sqlQuery->delete)
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$text = 'DELETE ';
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else if($sqlQuery->select) {
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if($limitText=='')
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$text.='SELECT';
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$text .= "$limitText $distinct" . implode(", ", $sqlQuery->select);
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}
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$text .= " FROM " . implode(" ", $sqlQuery->from);
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if($sqlQuery->where) $text .= " WHERE (" . $sqlQuery->getFilter(). ")";
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if($sqlQuery->groupby) $text .= " GROUP BY " . implode(", ", $sqlQuery->groupby);
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if($sqlQuery->having) $text .= " HAVING ( " . implode(" ) AND ( ", $sqlQuery->having) . " )";
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if($sqlQuery->orderby) $text .= " ORDER BY " . $sqlQuery->orderby;
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if($limitText=='')
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if($sqlQuery->orderby) $text .= " ORDER BY " . $sqlQuery->orderby;
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// Limit not implemented
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if($sqlQuery->limit){
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$text.=') AS Numbered WHERE Number BETWEEN ' . $offset . ' AND ' . ($offset+$limit) . ';';
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}
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//if($sqlQuery->limit) {
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/*if($sqlQuery->limit) {
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*/
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/*
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* For MSSQL, we need to do something different since it doesn't support LIMIT OFFSET as most normal
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* databases do
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*
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* select * from (
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select row_number() over (order by PrimaryKeyId) as number, * from MyTable
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* This is our preferred method, but we need to know the primary key name:
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*
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select * from (
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select row_number() over (order by $this->orderby) as number, * from MyTable
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) as numbered
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where number between 21 and 30
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SELECT * FROM (
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SELECT ROW_NUMBER() OVER (SELECT ORDER BY "Sort") AS Number, "SiteTree".*, "GhostPage".*, "ErrorPage".*, "RedirectorPage".*, "VirtualPage".*, "ExamplePage".*, "SiteTree"."ID", CASE WHEN "SiteTree"."ClassName" IS NOT NULL THEN "SiteTree"."ClassName" ELSE 'SiteTree' END AS "RecordClassName" FROM "SiteTree" LEFT JOIN "GhostPage" ON "GhostPage"."ID" = "SiteTree"."ID" LEFT JOIN "ErrorPage" ON "ErrorPage"."ID" = "SiteTree"."ID" LEFT JOIN "RedirectorPage" ON "RedirectorPage"."ID" = "SiteTree"."ID" LEFT JOIN "VirtualPage" ON "VirtualPage"."ID" = "SiteTree"."ID" LEFT JOIN "ExamplePage" ON "ExamplePage"."ID" = "SiteTree"."ID" WHERE ("URLSegment" = 'home') ORDER BY "Sort"
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) AS Numbered WHERE Number BETWEEN 0 AND 1;
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SELECT * FROM (
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select ROW_NUMBER() over (order by SiteTree.Title) AS RowNum, *
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FROM SiteTree) as Numbered
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WHERE RowNum Between 0 And 1;
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*/
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/*$limit = $sqlQuery->limit;
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// Pass limit as array or SQL string value
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if(is_array($limit)) {
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if(!array_key_exists('limit',$limit)) user_error('SQLQuery::limit(): Wrong format for $limit', E_USER_ERROR);
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if(isset($limit['start']) && is_numeric($limit['start']) && isset($limit['limit']) && is_numeric($limit['limit'])) {
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$combinedLimit = (int)$limit['start'] . ',' . (int)$limit['limit'];
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} elseif(isset($limit['limit']) && is_numeric($limit['limit'])) {
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$combinedLimit = (int)$limit['limit'];
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} else {
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$combinedLimit = false;
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}
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if(!empty($combinedLimit)) $this->limit = $combinedLimit;
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//}
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} else {
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$text .= " LIMIT " . $sqlQuery->limit;
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}
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}
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*/
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return $text;
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}
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@ -901,6 +942,110 @@ class MSSQLDatabase extends Database {
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function modifyIndex($index){
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return str_replace('_', ',', $index);
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}
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/**
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* The core search engine, used by this class and its subclasses to do fun stuff.
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* Searches both SiteTree and File.
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*
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* @param string $keywords Keywords as a string.
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*/
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public function searchEngine($classesToSearch, $keywords, $pageLength = null, $sortBy = "Relevance DESC", $extraFilter = "", $booleanSearch = false, $alternativeFileFilter = "", $invertedMatch = false) {
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$result=DB::query('EXEC sp_help_fulltext_columns;');
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//Get a list of all the tables and columns we'll be searching on:
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$tables=Array();
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foreach($result as $row){
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$tables[$row['TABLE_NAME']]=$row['FULLTEXT_COLUMN_NAME'];
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}
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//We'll do a union query on all of these tables... it's easeier!
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/*if(!$pageLength) $pageLength = $this->pageLength;
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$fileFilter = '';
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$keywords = Convert::raw2sql($keywords);
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$htmlEntityKeywords = htmlentities($keywords);
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$extraFilters = array('SiteTree' => '', 'File' => '');
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if($booleanSearch) $boolean = "IN BOOLEAN MODE";
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if($extraFilter) {
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$extraFilters['SiteTree'] = " AND $extraFilter";
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if($alternativeFileFilter) $extraFilters['File'] = " AND $alternativeFileFilter";
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else $extraFilters['File'] = $extraFilters['SiteTree'];
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}
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if($this->showInSearchTurnOn) $extraFilters['SiteTree'] .= " AND showInSearch <> 0";
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$start = isset($_GET['start']) ? (int)$_GET['start'] : 0;
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$limit = $start . ", " . (int) $pageLength;
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$notMatch = $invertedMatch ? "NOT " : "";
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if($keywords) {
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$match['SiteTree'] = "
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MATCH (Title, MenuTitle, Content, MetaTitle, MetaDescription, MetaKeywords) AGAINST ('$keywords' $boolean)
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+ MATCH (Content) AGAINST ('$htmlEntityKeywords' $boolean)
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";
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$match['File'] = "MATCH (Filename, Title, Content) AGAINST ('$keywords' $boolean) AND ClassName = 'File'";
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// We make the relevance search by converting a boolean mode search into a normal one
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$relevanceKeywords = str_replace(array('*','+','-'),'',$keywords);
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$htmlEntityRelevanceKeywords = str_replace(array('*','+','-'),'',$htmlEntityKeywords);
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$relevance['SiteTree'] = "MATCH (Title) AGAINST ('$relevanceKeywords') + MATCH(Content) AGAINST ('$htmlEntityRelevanceKeywords') + MATCH (Title, MenuTitle, Content, MetaTitle, MetaDescription, MetaKeywords) AGAINST ('$relevanceKeywords')";
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$relevance['File'] = "MATCH (Filename, Title, Content) AGAINST ('$relevanceKeywords')";
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} else {
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$relevance['SiteTree'] = $relevance['File'] = 1;
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$match['SiteTree'] = $match['File'] = "1 = 1";
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}
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// Generate initial queries and base table names
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$baseClasses = array('SiteTree' => '', 'File' => '');
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foreach($classesToSearch as $class) {
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$queries[$class] = singleton($class)->extendedSQL($notMatch . $match[$class] . $extraFilters[$class], "");
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$baseClasses[$class] = reset($queries[$class]->from);
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}
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// Make column selection lists
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$select = array(
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'SiteTree' => array("ClassName","$baseClasses[SiteTree].ID","ParentID","Title","URLSegment","Content","LastEdited","Created","_utf8'' AS Filename", "_utf8'' AS Name", "$relevance[SiteTree] AS Relevance", "CanViewType"),
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'File' => array("ClassName","$baseClasses[File].ID","_utf8'' AS ParentID","Title","_utf8'' AS URLSegment","Content","LastEdited","Created","Filename","Name","$relevance[File] AS Relevance","NULL AS CanViewType"),
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);
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// Process queries
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foreach($classesToSearch as $class) {
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// There's no need to do all that joining
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$queries[$class]->from = array(str_replace('`','',$baseClasses[$class]) => $baseClasses[$class]);
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$queries[$class]->select = $select[$class];
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$queries[$class]->orderby = null;
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}
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// Combine queries
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$querySQLs = array();
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$totalCount = 0;
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foreach($queries as $query) {
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$querySQLs[] = $query->sql();
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$totalCount += $query->unlimitedRowCount();
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}
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$fullQuery = implode(" UNION ", $querySQLs) . " ORDER BY $sortBy LIMIT $limit";
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// Get records
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echo 'full query: ' . $fullQuery . '<br>';
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$records = DB::query($fullQuery);
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foreach($records as $record)
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$objects[] = new $record['ClassName']($record);
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if(isset($objects)) $doSet = new DataObjectSet($objects);
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else $doSet = new DataObjectSet();
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$doSet->setPageLimits($start, $pageLength, $totalCount);
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return $doSet;*/
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}
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}
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/**
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