API_ItemSearch の検索結果に商品規格も含めるように拡張したAPIです。 data/downloads/api 以下に配置して下さい。

ItemSearchWithClass.php

<?php
/*
 * This file is part of EC-CUBE
 *
 * Copyright(c) 2000-2013 LOCKON CO.,LTD. All Rights Reserved.
 *
 * http://www.lockon.co.jp/
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

/**
 * API_ItemSearch の検索結果に商品規格も含めるように拡張したAPIです。
 *
 * @package Api
 * @author Seiji Nitta
 * @see API_ItemSearch
 */
require_once CLASS_EX_REALDIR . 'api_extends/operations/ItemSearch.php';

class API_ItemSearchWithClass extends API_ItemSearch_Ex {
    public function doAction($arrParam) {
        $successful = parent::doAction($arrParam);
        if (!$successful) {
            return false;
        }
        
        $query = SC_Query_Ex::getSingletonInstance();
        
        // 検索結果に含まれる商品IDを取得
        $product_ids = array();
        $response = $this->getResponseArray();
        $response_key = 'Item';
        foreach ($response[$response_key] as $key => $product) {
            $product_ids[$key] = $product['product_id'];
        }
        
        // 検索結果が空なら何もしない
        if (!$product_ids) {
            return true;
        }
        
        // 各商品の商品規格を取得
        $from = 'dtb_products_class AS pc'
            . ' LEFT JOIN mtb_product_type AS pt ON pc.product_type_id = pt.id'
            . ' LEFT JOIN dtb_classcategory AS cc1 ON cc1.classcategory_id = pc.classcategory_id1'
            . ' LEFT JOIN dtb_class AS c1 ON c1.class_id = cc1.class_id'
            . ' LEFT JOIN dtb_classcategory AS cc2 ON cc2.classcategory_id = pc.classcategory_id2'
            . ' LEFT JOIN dtb_class AS c2 ON c2.class_id = cc2.class_id';
        
        $placeholders = implode(',', array_fill(0, count($product_ids), '?'));
        $where = 'pc.del_flg = ?'
            . ' AND cc1.del_flg = ?'
            . ' AND cc2.del_flg = ?'
            . " AND pc.product_id IN ($placeholders)";
        $where_values = array_merge(array(0, 0, 0), $product_ids);
        
        $where .= ' ORDER BY cc1.rank DESC, cc2.rank DESC';

        $cols = implode(',', array(
            'product_id',
            'product_class_id',
            'product_code',
            'stock',
            'stock_unlimited',
            'sale_limit',
            'price01',
            'price02',
            'deliv_fee',
            'point_rate',
            'down_filename',
            'down_realfilename',
            'pt.name AS product_type',
            'c1.name AS class1_name',
            'cc1.name AS classcategory1_name',
            'c2.name AS class2_name',
            'cc2.name AS classcategory2_name',
        ));
        
        $rows = $query->select($cols, $from, $where, $where_values);
        $products_classes = array();
        foreach ($rows as $row) {
            $product_class = $row;
            unset($product_class['product_id']);
            $products_classes[$row['product_id']]['product_class'][] = $product_class;
        }
        
        // 検索結果に商品規格をマージ
        foreach ($product_ids as $key => $product_id) {
            $response[$response_key][$key]['product_classes'] = array_key_exists($product_id, $products_classes)
                ? $products_classes[$product_id]
                : array();
        }

        // レスポンスを上書き
        $this->setResponse($response_key, $response[$response_key]);
        return true;
    }
}