Make using transactions for partial index configurable

Author: avstudnitz

app/code/community/Hackathon/AsyncIndex/Model/Manager.php

@@ -18,7 +18,10 @@ public function executePartialIndex( Mage_Index_Model_Process $process )
     {
         /** @var $resourceModel Mage_Index_Model_Resource_Process */
         $resourceModel = Mage::getResourceSingleton('index/process');
-        $resourceModel->beginTransaction();
+
+        if (Mage::getStoreConfigFlag('system/asyncindex/use_transations')) {
+            $resourceModel->beginTransaction();
+        }
 
         $indexMode = 'schedule';
         $pendingMode = 'pending';
@@ -36,11 +39,15 @@ public function executePartialIndex( Mage_Index_Model_Process $process )
             if ( count(Mage::getResourceSingleton('index/event')->getUnprocessedEvents($process)) === 0 ) {
                 $process->changeStatus($pendingMode);
             }
-            $resourceModel->commit();
+            if (Mage::getStoreConfigFlag('system/asyncindex/use_transations')) {
+                $resourceModel->commit();
+            }
         }
         catch (Exception $e)
         {
-            $resourceModel->rollBack();
+            if (Mage::getStoreConfigFlag('system/asyncindex/use_transations')) {
+                $resourceModel->rollBack();
+            }
             throw $e;
         }
 

app/code/community/Hackathon/AsyncIndex/etc/config.xml

@@ -94,6 +94,7 @@
                 <auto_index>1</auto_index>
                 <scheduler_cron_expr>*/5 * * * *</scheduler_cron_expr>
                 <event_limit>100</event_limit>
+                <use_transactions>1</use_transactions>
             </asyncindex>
         </system>
     </default>

app/code/community/Hackathon/AsyncIndex/etc/system.xml

@@ -59,6 +59,15 @@
                             <show_in_website>0</show_in_website>
                             <show_in_store>0</show_in_store>
                         </blacklist_indexes>
+                        <use_transactions>
+                            <label>Use Transactions for Partial Index</label>
+                            <frontend_type>select</frontend_type>
+                            <source_model>adminhtml/system_config_source_yesno</source_model>
+                            <sort_order>60</sort_order>
+                            <show_in_default>1</show_in_default>
+                            <show_in_website>0</show_in_website>
+                            <show_in_store>0</show_in_store>
+                        </use_transactions>
                     </fields>
                 </asyncindex>
             </groups>