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<?php |
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/** |
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* Basic Forum Database Search. For a better search try the {@link ForumSphinxSearch} |
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* |
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* @package forum |
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*/ |
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class ForumDatabaseSearch implements ForumSearchProvider |
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{ |
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/** |
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* Get the results from the database |
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* |
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* @param Int $forumHolderID ForumHolderID to limit it too |
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* @param String $query need to make real escape for data safe |
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* @param String $order |
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* @param Int Offset |
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* @param Int Limit |
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* |
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* @return DataSet Results of matching posts or empty DataSet if no results. |
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*/ |
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public function getResults($forumHolderID, $query, $order = null, $offset = 0, $limit = 10) |
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{ |
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//sanitise the query string to avoid XSS (Using the ORM will also help avoid this too). |
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$query = Convert::raw2sql(trim($query)); |
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//sanitise the order/sorting as it can be changed by the user in quesry string. |
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$order = Convert::raw2sql(trim($order)); |
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//explode the query into the multiple terms to search, supply as an array to pass into the ORM filter. |
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$terms = explode(' ', $query); |
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//Add the original full query as one of the keywords. |
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$terms[] = $query; |
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//Get posts (limitation is that it picks up the whole phase rather than a FULLTEXT SEARCH. |
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//We are aiming to keep this as simple as possible). More complex impementations acheived with Solr. |
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//Rquires the post be moderated, then Checks for any match of Author name or Content partial match. |
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//Author name checks the full query whereas Content checks each term for matches. |
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$posts = Post::get() |
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->filter(array( |
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'Status' => 'Moderated', //posts my be moderated/visible. |
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'Forum.ParentID' => $forumHolderID //posts must be from a particular forum section. |
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)) |
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->filterAny(array( |
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'Author.Nickname:PartialMatch:nocase' => $query, |
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'Author.FirstName:PartialMatch:nocase' => $query, |
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'Author.Surname:PartialMatch:nocase' => $query, |
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'Content:PartialMatch:nocase' => $terms |
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)) |
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->leftJoin('ForumThread', 'Post.ThreadID = ForumThread.ID'); |
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// Work out what sorting method |
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switch ($order) { |
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case 'newest': |
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$posts = $posts->sort('Created', 'DESC'); |
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break; |
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case 'oldest': |
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break; |
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case 'title': |
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$posts = $posts->sort(array('Thread.Title'=>'ASC')); |
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break; |
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default: |
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$posts = $posts->sort(array( |
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'Thread.Title'=>'ASC', |
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'Created' => 'DESC' |
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)); |
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break; |
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} |
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return $posts ? $posts: new DataList(); |
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} |
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/** |
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* Callback when this Provider is loaded. For dealing with background processes |
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*/ |
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public function load() |
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{ |
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return true; |
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} |
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} |
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This check looks for function calls that miss required arguments.