diff --git a/lib/documentmanagement/Document.inc b/lib/documentmanagement/Document.inc
index 0fd48b8..13725dd 100644
--- a/lib/documentmanagement/Document.inc
+++ b/lib/documentmanagement/Document.inc
@@ -713,7 +713,7 @@ class Document extends KTEntity {
 		$sQuery = array("SELECT field_id FROM $default->document_type_fields_table DTFL " . /*ok*/
                   "INNER JOIN $default->document_fields_table AS DF ON DF.id = DTFL.field_id " .
                   "WHERE DTFL.document_type_id = ? " .
-                  "AND DF.is_generic = 0", $this->iDocumentTypeID);
+                  "AND DF.is_generic = ?", array($this->iDocumentTypeID, false));
 		$sql = $default->db;
 		$sql->query($sQuery);
 		$aFieldIDs = array();
diff --git a/lib/documentmanagement/DocumentCollaboration.inc b/lib/documentmanagement/DocumentCollaboration.inc
index 6132036..edec697 100644
--- a/lib/documentmanagement/DocumentCollaboration.inc
+++ b/lib/documentmanagement/DocumentCollaboration.inc
@@ -34,8 +34,8 @@ class DocumentCollaboration {
 	function documentCollaborationStarted($iDocumentID) {
 		global $default;
 		$sql = $default->db;
-        $sQuery = "SELECT id FROM $default->folders_user_roles_table WHERE document_id = ? AND (active = 1 OR done = 1)";/*ok*/
-        $aParams = array($iDocumentID);
+        $sQuery = "SELECT id FROM $default->folders_user_roles_table WHERE document_id = ? AND (active = ? OR done = ?)";/*ok*/
+        $aParams = array($iDocumentID, true, true);
 		$sql->query(array($sQuery, $aParams));
 		if ($sql->next_record()) {
 			return true;
@@ -46,8 +46,8 @@ class DocumentCollaboration {
     function documentCollaborationDone($iDocumentID) {
 		global $default;
 		$sql = $default->db;
-        $sQuery = "SELECT id FROM $default->folders_user_roles_table WHERE document_id = ? AND done = 0";/*ok*/
-        $aParams = array($iDocumentID);
+        $sQuery = "SELECT id FROM $default->folders_user_roles_table WHERE document_id = ? AND done = ?";/*ok*/
+        $aParams = array($iDocumentID, false);
 		$sql->query(array($sQuery, $aParams));
 		if ($sql->num_rows() > 0) {
 			return false;
@@ -64,8 +64,8 @@ class DocumentCollaboration {
 	function userIsPerformingCurrentCollaborationStep($iDocumentID) {
 		global $default;
 		$sql = $default->db;
-        $sQuery = "SELECT id FROM $default->folders_user_roles_table WHERE document_id = ? AND active = 1 AND user_id = ?";/*ok*/
-        $aParams = array($iDocumentID, $_SESSION["userID"]);
+        $sQuery = "SELECT id FROM $default->folders_user_roles_table WHERE document_id = ? AND active = ? AND user_id = ?";/*ok*/
+        $aParams = array($iDocumentID, true, $_SESSION["userID"]);
 		$sql->query(array($sQuery, $aParams));
 		if ($sql->next_record()) {
 			return true;
@@ -274,9 +274,9 @@ class DocumentCollaboration {
 				"INNER JOIN $default->groups_folders_approval_table AS GFAT ON FURL.group_folder_approval_id = GFAT.id " .
 				"WHERE FURL.document_id = ? " .
 				"AND FURL.user_id = ? " .
-				"AND FURL.active = 1 " .
+				"AND FURL.active = ? " .
 				"ORDER BY GFAT.precedence ASC";
-        $aParams = array($iDocumentID, $_SESSION["userID"]);
+        $aParams = array($iDocumentID, $_SESSION["userID"], true);
 				
 		$sql = $default->db;
 		$sql->query(array($sQuery, $aParams));
diff --git a/lib/foldermanagement/Folder.inc b/lib/foldermanagement/Folder.inc
index 8b4ed26..59c32be 100644
--- a/lib/foldermanagement/Folder.inc
+++ b/lib/foldermanagement/Folder.inc
@@ -709,8 +709,9 @@ class Folder extends KTEntity {
             $aDocumentIDs = split(',', $sDocumentIDs);
             $sQms = DBUtil::paramArray($aDocumentIDs);
 
-            $sQuery = "SELECT * FROM folders_users_roles_link WHERE document_id in ($sQms) AND (active = 1)";/*ok*/
+            $sQuery = "SELECT * FROM folders_users_roles_link WHERE document_id in ($sQms) AND (active = ?)";/*ok*/
             $aParams = $aDocumentIDs;
+            $aParams[] = true;
             $sql = $default->db;
             $sql->query(array($sQuery, $aParams));
             if ($sql->next_record()) {
diff --git a/lib/security/Permission.inc b/lib/security/Permission.inc
index 7d23ffa..d3cc007 100644
--- a/lib/security/Permission.inc
+++ b/lib/security/Permission.inc
@@ -168,8 +168,8 @@ class Permission {
                         "FROM $default->groups_folders_table AS GFL INNER JOIN $default->users_groups_table AS UGL ON GFL.group_id = UGL.group_id " .
                         "WHERE UGL.user_id = ? " .
                         "AND GFL.folder_id = ? " .
-                        "AND GFL.can_write = 1 ";
-        $aParams = array($_SESSION["userID"], $oFolder->getPermissionFolderID());
+                        "AND GFL.can_write = ? ";
+        $aParams = array($_SESSION["userID"], $oFolder->getPermissionFolderID(), true);
 
         $res = DBUtil::runQuery(array($sQuery, $aParams));
         
@@ -230,8 +230,8 @@ class Permission {
                   "FROM $default->groups_folders_table AS GFL INNER JOIN $default->users_groups_table AS UGL ON GFL.group_id = UGL.group_id " .
                   "WHERE UGL.user_id = ? " .
                   "AND GFL.folder_id = ? " .
-                  "AND GFL.can_read = 1 ";
-        $aParams = array($_SESSION["userID"], $oFolder->getPermissionFolderID());
+                  "AND GFL.can_read = ? ";
+        $aParams = array($_SESSION["userID"], $oFolder->getPermissionFolderID(), true);
         
         //$sql->query(array($sQuery, $aParams));
         $res = DBUtil::runQuery(array($sQuery, $aParams));
@@ -306,9 +306,9 @@ class Permission {
                     "INNER JOIN $default->roles_table AS R ON GFAL.role_id = R.id " .                   
                     "WHERE FURL.user_id = ? " .
                     "AND FURL.document_id = ? " .
-                    "AND R.can_write = 1 " . 
-                    "AND R.active = 1";
-        $aParams = array($_SESSION["userID"], $oDocument->getID());
+                    "AND R.can_write = ? " . 
+                    "AND R.active = ?";
+        $aParams = array($_SESSION["userID"], $oDocument->getID(), true, true);
         $sql->query(array($sQuery, $aParams));
         if ($sql->next_record()) {
             return true;
@@ -331,8 +331,8 @@ class Permission {
                     "INNER JOIN $default->roles_table AS R ON GFAL.role_id = R.id " .                   
                     "WHERE FURL.user_id = ? " .
                     "AND FURL.document_id = ? " .
-                    "AND R.can_read = 1";
-        $aParams = array($_SESSION["userID"], $oDocument->getID());
+                    "AND R.can_read = ?";
+        $aParams = array($_SESSION["userID"], $oDocument->getID(), true);
         $sql->query(array($sQuery, $aParams));
         if ($sql->next_record()) {
             return true;
diff --git a/presentation/lookAndFeel/knowledgeTree/administration/doctypemanagement/editDocTypeFieldsUI.inc b/presentation/lookAndFeel/knowledgeTree/administration/doctypemanagement/editDocTypeFieldsUI.inc
index 559386d..004b778 100644
--- a/presentation/lookAndFeel/knowledgeTree/administration/doctypemanagement/editDocTypeFieldsUI.inc
+++ b/presentation/lookAndFeel/knowledgeTree/administration/doctypemanagement/editDocTypeFieldsUI.inc
@@ -125,7 +125,7 @@ function getFailurePage($sMessage, $iDocTypeID) {
 
 function getGenericFieldsList() {
     global $default;
-    $aGenericDocumentFields = DocumentField::getList("is_generic=1");/*ok*/
+    $aGenericDocumentFields = DocumentField::getList(array("is_generic=?"), array(true)));/*ok*/
     for($i = 0; $i < count($aGenericDocumentFields); $i++) {
         $sToRender .= "<li>" . $aGenericDocumentFields[$i]->getName() . "</li>\n";
     }
diff --git a/presentation/lookAndFeel/knowledgeTree/documentmanagement/addDocumentUI.inc b/presentation/lookAndFeel/knowledgeTree/documentmanagement/addDocumentUI.inc
index 52f7ed6..c90236c 100644
--- a/presentation/lookAndFeel/knowledgeTree/documentmanagement/addDocumentUI.inc
+++ b/presentation/lookAndFeel/knowledgeTree/documentmanagement/addDocumentUI.inc
@@ -73,9 +73,9 @@ function getUploadDocument() {
  */
 function getGenericMetaDataForm() {
     global $default;
-    /*ok*/ $sQuery = "SELECT DISTINCT -1 AS document_id, DF.id AS document_field_id, DF.name AS field_name, -1 AS id " .
+    /*ok*/ $sQuery = array("SELECT DISTINCT -1 AS document_id, DF.id AS document_field_id, DF.name AS field_name, -1 AS id " .
 			  "FROM document_fields AS DF LEFT OUTER JOIN document_fields_link AS DFL ON DF.id = DFL.document_field_id " .				
-			  "WHERE DF.is_generic = 1 ";
+			  "WHERE DF.is_generic = ? ", array(true));
 
     $aStoreColumnNames = array("document_id", "document_field_id", "value");
     $aDisplayColumnNames = array("document_id", "field_name", "value");
@@ -105,8 +105,8 @@ function getTypeSpecificMetaDataForm($iFolderID, $iDocumentTypeID) {
 	/*ok*/ $sQuery = array("SELECT DISTINCT -1 AS document_id, DF.id AS document_field_id, DF.name AS field_name, DTFL.is_mandatory AS is_mandatory, -1 AS id " .
 			  "FROM document_type_fields_link AS DTFL INNER JOIN document_fields AS DF ON DTFL.field_id = DF.id " .
 			  "LEFT OUTER JOIN document_fields_link AS DFL ON DFL.document_field_id = DTFL.field_id " .
-			  "WHERE DF.is_generic = 0 " .
-			  "AND DTFL.document_type_id = ?", $iDocumentTypeID);
+			  "WHERE DF.is_generic = ? " .
+			  "AND DTFL.document_type_id = ?", array(false, $iDocumentTypeID));
 			  
 	$aStoreColumnNames = array("document_id", "document_field_id", "value");
     $aDisplayColumnNames = array("document_id", "field_name", "value");