updated functionality to catch category and product save/update event and flag to reindex data. @todo:: if saved product is new then flag based on brand/manufacturer assigned to a product

Author: damu

app/code/community/Technooze/Tindexer/Model/Indexer.php

@@ -33,6 +33,8 @@ class Technooze_Tindexer_Model_Indexer extends Mage_Index_Model_Indexer_Abstract
     // var to protect multiple runs
     protected $_registered = false;
     protected $_processed = false;
+    protected $_categoryId = 0;
+    protected $_productIds = array();
 
     /**
      * not sure why this is required.
@@ -94,6 +96,9 @@ protected function _registerProductEvent(Mage_Index_Model_Event $event)
 
         if ($eventType == Mage_Index_Model_Event::TYPE_SAVE || $eventType == Mage_Index_Model_Event::TYPE_MASS_ACTION) {
             $process = $event->getProcess();
+            $this->_productIds = $event->getDataObject()->getData('product_ids');
+            $this->flagIndexRequired($this->_productIds, 'products');
+
             $process->changeStatus(Mage_Index_Model_Process::STATUS_REQUIRE_REINDEX);
         }
     }
@@ -113,6 +118,9 @@ protected function _registerCategoryEvent(Mage_Index_Model_Event $event)
 
         if ($category->getIsChangedProductList() || $category->getAffectedCategoryIds()) {
             $process = $event->getProcess();
+            $this->_categoryId = $event->getDataObject()->getData('entity_id');
+            $this->flagIndexRequired($this->_categoryId, 'categories');
+
             $process->changeStatus(Mage_Index_Model_Process::STATUS_REQUIRE_REINDEX);
         }
     }
@@ -123,9 +131,21 @@ protected function _processEvent(Mage_Index_Model_Event $event){
         }
     }
 
-    public function reindexAll(){
-        // reindex all data | initFilteredProductsCount
+    public function flagIndexRequired($ids=array(), $type='products'){
+        $ids = (array)$ids;
         $collection = Mage::getModel('tindexer/products')->getCollection();
+        $filter = array();
+        foreach($ids as $id){
+            $filter[] = array('like' => "%,{$id},%");
+        }
+        $collection->addFieldToFilter($type, $filter);
+        $collection->setDataToAll('flag', 1);
+        $collection->save();
+    }
+
+    public function reindexAll(){
+        // reindex all data which are flagged 1 | initFilteredProductsCount
+        $collection = Mage::getModel('tindexer/products')->getCollection()->addFieldToFilter('flag', 1);
         foreach($collection as $v){
             try{
                 Mage::getModel('tindexer/products')->initFilteredProductsCount('brand', $v->getData('attr_id'), $v->getData('tindexer_id'));

app/code/community/Technooze/Tindexer/Model/Products.php

@@ -185,10 +185,15 @@ public function initFilteredProductsCount($filter = 'brand', $optionId = 0, $id
                             ->addAttributeToFilter($filter,$optionId)
                             ->addStoreFilter()
                             ;
+
+        // ---
+        $includedCategories = $includedProducts = array();
         if($collection->count()){
             foreach($collection as $v){
                 $cats = $this->getProductCategories($v);
+                $includedProducts[] = $v->getId();
                 foreach($cats as $cat){
+                    $includedCategories[] = $cat;
                     if(isset($this->_filteredProducts[$optionId][$cat])){
                         $this->_filteredProducts[$optionId][$cat]++;
                         continue;
@@ -205,18 +210,18 @@ public function initFilteredProductsCount($filter = 'brand', $optionId = 0, $id
                 $data = array(
                     'attr_id' => $optionId,
                     'count' => $counts,
+                    'products' => ','.implode(',', $includedProducts).',',
+                    'categories' => ','.implode(',', $includedCategories).',',
                     'flag' => 0,
                     'store_id' => 0,
                 );
                 $model->addData($data);
                 $model->save();
-                Mage::log('save');
             } catch (Exception $e) {
                 Mage::log($e->getMessage());
                 return;
             }
         } else {
-            Mage::log('nill');
         }
         return;
     }

app/code/community/Technooze/Tindexer/sql/tindexer_setup/mysql4-install-0.1.0.php

@@ -25,6 +25,8 @@
    `tindexer_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
    `attr_id` int(10) DEFAULT NULL,
    `count` text,
+   `categories` text,
+   `products` text,
    `store_id` int(11) NOT NULL DEFAULT '1',
    `flag` int(1) NOT NULL DEFAULT '0',
    `update` timestamp NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,