this bug 5882 was solved, we added a way to validate it

workflow/engine/classes/model/Step.php

@@ -454,6 +454,65 @@ class Step extends BaseStep {
   }
  }
  
+ /**
+   * verify if a dbconnection is assigned in some dynaforms or triggers
+   *
+   * @param      string $sproUid   the uid of the process
+   * @param      string $sdbsUid   the uid of the db connection
+   */
+  function loadInfoAssigConnecctionDB($sproUid,$sdbsUid){
+
+   require_once ( "classes/model/DynaformPeer.php" );
+   G::LoadSystem('dynaformhandler');     
+    $swDynaform = true;
+    $swTriggers = true;
+    //we are looking for triggers if there is at least one db connection
+    $oC = new Criteria('workflow');
+    $oC->add(TriggersPeer::PRO_UID,  $sproUid);
+    $oDataset = TriggersPeer::doSelectRS($oC);
+    $oDataset->setFetchmode(ResultSet::FETCHMODE_ASSOC);
+    $oDataset->next();
+    //print $sproUid;
+    while($aRowT = $oDataset->getRow()){  
+     $uidConnection =preg_quote($sdbsUid) ;
+     if( strrpos($uidConnection,$aRowT['TRI_WEBBOT']) ) { 
+      $swTriggers = false;
+     }
+    $oDataset->next();
+    }
+    //we are looking for dynaforms if there is at least one db connection
+    $oC = new Criteria('workflow');
+    $oC->add(DynaformPeer::PRO_UID,  $sproUid);
+    $oDataset = DynaformPeer::doSelectRS($oC);
+    $oDataset->setFetchmode(ResultSet::FETCHMODE_ASSOC);
+    $oDataset->next();
+    while($aRow = $oDataset->getRow()){
+      if($aRow['DYN_TYPE']=='xmlform') {
+        $dynHandler = new dynaFormHandler(PATH_DYNAFORM.$aRow['DYN_FILENAME'].".xml");
+        $dynFields = $dynHandler->getFields();
+        $sxmlgrid = '';
+        $sType = '';
+        $check=0;
+        foreach($dynFields as $field){
+         $ssqlConnection = $this->getAttribute($field, 'sqlconnection');
+         if($ssqlConnection==$sdbsUid)
+          $swDynaform=false;
+        }//end foreach 
+        
+      }//end if
+    $oDataset->next();
+    }//end while
+   //is there a connecction?
+   if ($swDynaform && $swTriggers){
+   //there is no db connection, you can delete this connection
+    return true;
+   } else {
+   //there is a db connection, you can not delete this connection
+    return false;
+   }
+  die;
+  }
+ 
   /**
    * Get related steps for a determinated case
    *

workflow/engine/js/dbConnections/main.js

@@ -157,8 +157,15 @@ function editDbConnection(DBS_UID)
 	oRPC.make();
 }
 
-function deleteDbConnection(DBS_UID)
+function deleteDbConnection(DBS_UID,PRO_UID)
 {
+
+   isokDependent = ajax_function(PROCESS_REQUEST_FILE,'loadInfoAssigConnecctionDB','DBS_UID='+DBS_UID+'&PRO_UID='+PRO_UID,'POST');
+
+   if(!isokDependent){
+	  msgBox(G_STRINGS.ID_DB_CONNECTION_ASSIGN,"alert");
+	  return;
+   }
   	new leimnud.module.app.confirm().make({
   		label:G_STRINGS.ID_MSG_CONFIRM_REMOVE_DBS,
     	action:function(){

workflow/engine/methods/dbConnections/dbConnectionsAjax.php

@@ -30,8 +30,8 @@
  * @Param  var action from POST request
  */
 
-if( isset($_POST['action']) ){
+if( isset($_POST['action']) || isset($_POST['function']) ){
-	$action = $_POST['action'];
+	$action = (isset($_POST['action']))?$_POST['action']:$_POST['function'];
 } else {
 	throw new Exception('dbconnections Fatal error, No action defined!...');
 }
@@ -50,7 +50,12 @@ G::LoadClass ('dbConnections');
 global $_DBArray;
 
 switch ( $action ){
-
+  
+  case 'loadInfoAssigConnecctionDB':
+   $oStep = new Step();
+    return print ($oStep->loadInfoAssigConnecctionDB($_POST['PRO_UID'],$_POST['DBS_UID']));
+  break;
+  
 	case 'showDbConnectionsList':
 
 		$oProcess = new processMap();

workflow/engine/xmlform/dbConnections/dbConnections.xml

@@ -25,10 +25,10 @@
   <en>Edit</en>
 </DBS_EDIT>
 
-<DBS_DELETE type="link" colWidth="50" link="javascript:deleteDbConnection(&#039;@#DBS_UID&#039;)">
+<DBS_DELETE type="link" colWidth="50" link="javascript:deleteDbConnection(&#039;@#DBS_UID&#039;,&#039;@#PRO_UID&#039;)">
   <en>Delete</en>
 </DBS_DELETE>
 
 <GET_UID type="link" colWidth="40" value="UID" link="#" onclick="msgBox(&#039;UID: &#039;+@QDBS_UID, &#039;info&#039;);return false;"/>
 
-</dynaForm>  
+</dynaForm>