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CatalogSearch - Ensure facets are correctly build when using MySQL as… #9

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Oct 30, 2015
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CatalogSearch - Ensure facets are correctly build when using MySQL as… #9

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134 changes: 134 additions & 0 deletions ...e/community/Smile/MongoCatalog/Model/Resource/Override/Catalog/Layer/Filter/Attribute.php
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@@ -0,0 +1,134 @@
<?php
/**
* MongoGento
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE_AFL.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade MongoGento to newer
* versions in the future.
*/

/**
* Overriden class allowing to build search facet based on MongoDB data
*
* @category Smile
* @package Smile_MongoCatalog
* @author Romain Ruaud <romain.ruaud@smile.fr>
* @copyright 2015 Smile
* @license http://opensource.org/licenses/afl-3.0.php Academic Free License (AFL 3.0)
*/
class Smile_MongoCatalog_Model_Resource_Override_Catalog_Layer_Filter_Attribute
extends Mage_Catalog_Model_Resource_Layer_Filter_Attribute
{
/**
* Retrieve array with products counts per attribute option
*
* @param Mage_Catalog_Model_Layer_Filter_Attribute $filter The current catalog filter
*
* @return array
*/
public function getCount($filter)
{
$catalogResource = Mage::getResourceModel("catalog/product");
$attribute = $filter->getAttributeModel();

/**
* For legacy SQL based attributes, Magento based the query on "catalog/product_index_eav", let him do
*/
if (in_array($attribute->getAttributeCode(), $catalogResource->getSqlAttributesCodes())) {
return parent::getCount($filter);
}

/**
* Since we have MongoDB, nothing is stored on eav index table for other attributes
* Let's build the query with an aggregation
*
* @see http://docs.mongodb.org/manual/reference/operator/aggregation/
*/
$collection = clone $filter->getLayer()->getProductCollection();

/** @var Smile_MongoCore_Model_Resource_Connection_Adapter $adapter */
$adapter = Mage::getSingleton('mongocore/resource_connection_adapter');
$queryBuilder = $adapter->getQueryBuilder();
$collectionName = Mage::getResourceModel('catalog/product')->getEntityTable();
$docCollection = $adapter->getCollection($collectionName);

/** Build a condition to have all products which have the specified attribute as "notnull" AND not an empty string */
$scopedAttributeName = 'attr_' . $filter->getStoreId() . '.' . $attribute->getAttributeCode();
$globalAttributeName = 'attr_' . Mage_Core_Model_App::ADMIN_STORE_ID . '.' . $attribute->getAttributeCode();

$filterCascade = array(
'$or' => array(
array('$and'=> array(
array($scopedAttributeName => array('$exists' => 1)),
)),
array('$and'=> array(
array($scopedAttributeName => array('$exists' => 0)),
array($globalAttributeName => array('$exists' => 1)),
)),
)
);

$documentFilter = $filterCascade;

$documentFilter['$or'][0]['$and'][] = array($scopedAttributeName => array('$' . "ne" => 'null'));
$documentFilter['$or'][0]['$and'][] = array($scopedAttributeName => array('$' . "ne" => ''));
$documentFilter['$or'][1]['$and'][] = array($globalAttributeName => array('$' . "ne" => 'null'));
$documentFilter['$or'][1]['$and'][] = array($globalAttributeName => array('$' . "ne" => ''));

/** First, the matching, current product ids, and our calculated document filter **/
$match = array(
'$and' => array(
$queryBuilder->getIdsFilter($collection->getAllIds()), // This avoid to parse the whole collection
$documentFilter // This match only products having data for this attribute
)
);

/** And then, the grouping, by attribute values, and calculating a sum */
$group = array(
"_id" => array(
"{$scopedAttributeName}" => '$' . $scopedAttributeName,
"{$globalAttributeName}" => '$' . $globalAttributeName,
),
"total" => array('$sum' => 1)
);

/** Building aggregation pipeline based on match and group previously built */
$pipeline = array(
array('$match' => $match),
array('$group' => $group)
);

$aggregation = $docCollection->aggregate($pipeline);

/**
* Now parse the aggregation result
* Goal is to obtain an array like this :
*
* <attribute option id> => <total number of occurences>
*/
$aggregationResult = array();
if (($aggregation['ok'] == 1) && (isset($aggregation["result"]))) {
foreach ($aggregation["result"] as $aggregate) {
if (isset($aggregate["_id"]) && (isset($aggregate['total']))) {
$option = null;
foreach ($aggregate["_id"] as $value) {
$option = $value;
}
if (!is_null($option)) {
$aggregationResult[$option] = $aggregate['total'];
}
}
}
}

return ksort($aggregationResult);
}
}
2 changes: 2 additions & 0 deletions src/app/code/community/Smile/MongoCatalog/etc/config.xml
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<product_action>Smile_MongoCatalog_Model_Resource_Override_Catalog_Product_Action</product_action>
<product_collection>Smile_MongoCatalog_Model_Resource_Override_Catalog_Product_Collection</product_collection>
<url>Smile_MongoCatalog_Model_Resource_Override_Catalog_Url</url>
<!-- To handle search facet count based on data stored in MongoDB -->
<layer_filter_attribute>Smile_MongoCatalog_Model_Resource_Override_Catalog_Layer_Filter_Attribute</layer_filter_attribute>
</rewrite>
</catalog_resource>
</models>
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