diff --git a/presentation/lookAndFeel/knowledgeTree/search/booleanSearch.php b/presentation/lookAndFeel/knowledgeTree/search/booleanSearch.php
index a4aa28a..2580c39 100644
--- a/presentation/lookAndFeel/knowledgeTree/search/booleanSearch.php
+++ b/presentation/lookAndFeel/knowledgeTree/search/booleanSearch.php
@@ -8,6 +8,7 @@ require_once(KT_LIB_DIR . "/database/dbutil.inc");
 require_once(KT_LIB_DIR . "/util/ktutil.inc");
 require_once(KT_LIB_DIR . "/dispatcher.inc.php");
 require_once(KT_LIB_DIR . "/browse/Criteria.inc");
+require_once(KT_LIB_DIR . "/visualpatterns/PatternBrowsableSearchResults.inc");
 
 // specific includes
 
@@ -38,6 +39,124 @@ class BooleanSearchDispatcher extends KTStandardDispatcher {
         $main->setCentralPayload($data);
         $main->render();
     }
+    
+    function do_performSearch() {
+        // TODO first extract environ vars
+        // TODO second create criterion objects (see getAdvancedSearchResults for this.
+        // TODO third get each one to generate the SQL snippet. (ENSURE that they are wrapped in '('..')' )
+        // TODO fourth array().join(' AND ') where appropriate
+        // TODO finally return via PatternBrowseableSearchResults (urgh.)
+        
+        $datavars = KTUtil::arrayGet($_REQUEST, 'boolean_search');
+        $booleanJoinName = KTUtil::arrayGet($_REQUEST, 'boolean_condition');
+        
+        if (empty($datavars)) {
+            $this->errorRedirectToMain('You need to have at least 1 condition.');
+        }
+        if (empty($booleanJoinName)) {
+             $this->errorRedirectToMain('You need to specify which kind of search (ALL/ANY) you wish to perform.');
+        }
+        
+        
+        // Step 1:  extract the criteria selection, and create an array of criteria.
+        $criteria_set = array();
+        foreach ($datavars as $order => $dataset) {
+             
+             $oCriterion =& Criteria::getCriterionByNumber($dataset["type"]);             
+             if (PEAR::isError($oCriterion)) {
+                 $this->errorRedirectToMain('Invalid criteria specified.');
+             }
+             
+             $criteria_set[] = array($oCriterion, $dataset['data']);
+        }
+        
+        $res = $this->handleCriteriaSet($criteria_set, $booleanJoinName);
+        
+        return $res;
+    }
+    
+    function handleCriteriaSet($aCriteriaSet, $mergeType='AND') {
+		global $default;
+		$aSQL = array();
+		$aJoinSQL = array();
+		foreach ($aCriteriaSet as $oCriterionPair) {
+		    $oCriterion = $oCriterionPair[0];
+			$aReq = $oCriterionPair[1];
+			$res = $oCriterion->searchSQL($aReq);
+			if (!is_null($res)) {
+				$aSQL[] = $res;
+			}
+			$res = $oCriterion->searchJoinSQL();
+			if (!is_null($res)) {
+				$aJoinSQL[] = $res;
+			}
+		}
+		
+		$aCritParams = array();
+		$aCritQueries = array();
+		foreach ($aSQL as $sSQL) {
+			if (is_array($sSQL)) {
+				$aCritQueries[] = '('.$sSQL[0].')';
+				$aCritParams = array_merge($aCritParams , $sSQL[1]);
+			} else {
+				$aCritQueries[] = '('.$sSQL.')';
+			}
+		}
+	
+		if (count($aCritQueries) == 0) {
+			$this->errorRedirectToMain("No search criteria were specified");
+			exit(0);
+		}
+	
+		$sSQLSearchString = join("\n ".$mergeType." ", $aCritQueries);
+		$sJoinSQL = join(" ", $aJoinSQL);
+	
+		$sToSearch = KTUtil::arrayGet($aOrigReq, 'fToSearch', 'Live'); // actually never present in this version.
+	
+		$sQuery = DBUtil::compactQuery("
+	SELECT
+		F.name AS folder_name, F.id AS folder_id, D.id AS document_id,
+		D.name AS document_name, D.filename AS file_name, COUNT(D.id) AS doc_count, 'View' AS view
+	FROM
+		$default->documents_table AS D
+		INNER JOIN $default->folders_table AS F ON D.folder_id = F.id
+		$sJoinSQL
+		INNER JOIN $default->search_permissions_table AS SDUL ON SDUL.document_id = D.id
+		INNER JOIN $default->status_table AS SL on D.status_id=SL.id
+	WHERE
+		(F.is_public OR
+		SDUL.user_id = ?)
+		AND SL.name = ?
+		AND ($sSQLSearchString)
+	GROUP BY D.id
+	ORDER BY doc_count DESC");
+	
+		$aParams = array();
+		$aParams[] = $_SESSION["userID"];
+		$aParams[] = $sToSearch;
+		$aParams = array_merge($aParams, $aCritParams);
+	
+		//'<pre>'.var_dump(DBUtil::getResultArray(array($sQuery, $aParams)));
+		//exit(0);
+		//return '<pre>'.print_r(DBUtil::getResultArray(array($sQuery, $aParams)), true).'</pre>';
+	
+		$aColumns = array("folder_name", "file_name", "document_name", "doc_count", "view");
+		$aColumnTypes = array(3,3,3,1,3);
+		$aColumnHeaders = array("<font color=\"ffffff\"><img src=$default->graphicsUrl/widgets/dfolder.gif>" . _("Folder") . "</font>", "<font color=\"ffffff\">" . _("Name") . "</font>", "<font color=\"ffffff\">" . _("Title") . "</font>", "<font color=\"ffffff\">" . _("Matches") . "</font>", "<font color=\"ffffff\">" . _("View") . "</font>");
+		$aLinkURLs = array("$default->rootUrl/control.php?action=browse","$default->rootUrl/control.php?action=viewDocument", "$default->rootUrl/control.php?action=viewDocument", null, "$default->rootUrl/control.php?action=downloadDocument");
+		$aDBQueryStringColumns = array("document_id","folder_id");
+		$aQueryStringVariableNames = array("fDocumentID", "fFolderID");
+	
+		$oPatternBrowse = & new PatternBrowseableSearchResults(array($sQuery, $aParams), 10, $aColumns, $aColumnTypes, $aColumnHeaders, $aLinkURLs, $aDBQueryStringColumns, $aQueryStringVariableNames);
+		$oPatternBrowse->setStartIndex($iStartIndex);
+		$oPatternBrowse->setSearchText("");
+		$oPatternBrowse->setRememberValues($aReq);
+		$sForSearch = "<input type=\"hidden\" name=\"fForSearch\" value=\"1\" />";
+	
+		return renderHeading(_("Advanced Search")) . $oPatternBrowse->render() . $sForSearch . $sRefreshMessage;
+
+        //return '<pre>'.$sSQLSearchString.'</pre>';
+    }
 }
 
 $oDispatcher = new BooleanSearchDispatcher();