<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Mage
 * @package     Mage_Downloadable
 * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/* @var $installer Mage_Catalog_Model_Resource_Setup */
$installer = $this;
$installer->startSetup();

/**
 * Drop foreign keys
 */
$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/link'),
    'FK_DOWNLODABLE_LINK_PRODUCT'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/link_price'),
    'FK_DOWNLOADABLE_LINK_PRICE_LINK'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/link_price'),
    'FK_DOWNLOADABLE_LINK_PRICE_WEBSITE'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/link_purchased'),
    'FK_DOWNLOADABLE_LINK_ORDER_ID'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/link_purchased_item'),
    'FK_DOWNLOADABLE_LINK_PURCHASED_ID'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/link_purchased_item'),
    'FK_DOWNLOADABLE_LINK_ORDER_ITEM_ID'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/link_title'),
    'FK_DOWNLOADABLE_LINK_TITLE_LINK'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/link_title'),
    'FK_DOWNLOADABLE_LINK_TITLE_STORE'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable/sample'),
    'FK_DOWNLODABLE_SAMPLE_PRODUCT'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable_sample_title'),
    'FK_DOWNLOADABLE_SAMPLE_TITLE_SAMPLE'
);

$installer->getConnection()->dropForeignKey(
    $installer->getTable('downloadable_sample_title'),
    'FK_DOWNLOADABLE_SAMPLE_TITLE_STORE'
);


/**
 * Drop indexes
 */
$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link'),
    'DOWNLODABLE_LINK_PRODUCT'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link'),
    'DOWNLODABLE_LINK_PRODUCT_SORT_ORDER'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_price'),
    'DOWNLOADABLE_LINK_PRICE_LINK'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_price'),
    'DOWNLOADABLE_LINK_PRICE_WEBSITE'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_purchased'),
    'DOWNLOADABLE_ORDER_ID'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_purchased'),
    'DOWNLOADABLE_CUSTOMER_ID'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_purchased'),
    'KEY_DOWNLOADABLE_ORDER_ITEM_ID'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_purchased_item'),
    'DOWNLOADABLE_LINK_PURCHASED_ID'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_purchased_item'),
    'DOWNLOADABLE_ORDER_ITEM_ID'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_purchased_item'),
    'DOWNLOADALBE_LINK_HASH'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_title'),
    'UNQ_LINK_TITLE_STORE'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_title'),
    'DOWNLOADABLE_LINK_TITLE_LINK'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/link_title'),
    'DOWNLOADABLE_LINK_TITLE_STORE'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/sample'),
    'DOWNLODABLE_SAMPLE_PRODUCT'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/sample_title'),
    'UNQ_SAMPLE_TITLE_STORE'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/sample_title'),
    'DOWNLOADABLE_SAMPLE_TITLE_SAMPLE'
);

$installer->getConnection()->dropIndex(
    $installer->getTable('downloadable/sample_title'),
    'DOWNLOADABLE_SAMPLE_TITLE_STORE'
);


/**
 * Change columns
 */

$tables = array(
    $installer->getTable('downloadable/link') => array(
        'columns' => array(
            'link_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'identity'  => true,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Link ID'
            ),
            'product_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Product ID'
            ),
            'sort_order' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Sort order'
            ),
            'number_of_downloads' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'comment'   => 'Number of downloads'
            ),
            'is_shareable' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Shareable flag'
            ),
            'link_url' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Link Url'
            ),
            'link_file' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Link File'
            ),
            'link_type' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 20,
                'comment'   => 'Link Type'
            ),
            'sample_url' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Sample Url'
            ),
            'sample_file' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Sample File'
            ),
            'sample_type' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 20,
                'comment'   => 'Sample Type'
            )
        ),
        'comment' => 'Downloadable Link Table'
    ),
    $installer->getTable('downloadable/link_title') => array(
        'columns' => array(
            'title_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'identity'  => true,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Title ID'
            ),
            'link_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Link ID'
            ),
            'store_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Store ID'
            ),
            'title' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Title'
            )
        ),
        'comment' => 'Link Title Table'
    ),
    $installer->getTable('downloadable/link_price') => array(
        'columns' => array(
            'price_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'identity'  => true,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Price ID'
            ),
            'link_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Link ID'
            ),
            'website_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Website ID'
            ),
            'price' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_DECIMAL,
                'scale'     => 4,
                'precision' => 12,
                'nullable'  => false,
                'default'   => '0.0000',
                'comment'   => 'Price'
            )
        ),
        'comment' => 'Downloadable Link Price Table'
    ),
    $installer->getTable('downloadable/sample') => array(
        'columns' => array(
            'sample_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'identity'  => true,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Sample ID'
            ),
            'product_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Product ID'
            ),
            'sample_url' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Sample URL'
            ),
            'sample_file' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Sample file'
            ),
            'sample_type' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 20,
                'comment'   => 'Sample Type'
            ),
            'sort_order' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Sort Order'
            )
        ),
        'comment' => 'Downloadable Sample Table'
    ),
    $installer->getTable('downloadable/sample_title') => array(
        'columns' => array(
            'title_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'identity'  => true,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Title ID'
            ),
            'sample_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Sample ID'
            ),
            'store_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Store ID'
            ),
            'title' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Title'
            )
        ),
        'comment' => 'Downloadable Sample Title Table'
    ),
    $installer->getTable('downloadable/link_purchased') => array(
        'columns' => array(
            'purchased_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'identity'  => true,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Purchased ID'
            ),
            'order_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'default'   => '0',
                'comment'   => 'Order ID'
            ),
            'order_increment_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 50,
                'comment'   => 'Order Increment ID'
            ),
            'order_item_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Order Item ID'
            ),
            'created_at' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TIMESTAMP,
                'nullable'  => false,
                'comment'   => 'Date of creation'
            ),
            'updated_at' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TIMESTAMP,
                'nullable'  => false,
                'comment'   => 'Date of modification'
            ),
            'customer_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'default'   => '0',
                'comment'   => 'Customer ID'
            ),
            'product_name' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Product name'
            ),
            'product_sku' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Product sku'
            ),
            'link_section_title' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Link_section_title'
            )
        ),
        'comment' => 'Downloadable Link Purchased Table'
    ),
    $installer->getTable('downloadable/link_purchased_item') => array(
        'columns' => array(
            'item_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'identity'  => true,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Item ID'
            ),
            'purchased_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Purchased ID'
            ),
            'order_item_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'default'   => '0',
                'comment'   => 'Order Item ID'
            ),
            'product_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'default'   => '0',
                'comment'   => 'Product ID'
            ),
            'link_hash' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Link hash'
            ),
            'number_of_downloads_bought' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Number of downloads bought'
            ),
            'number_of_downloads_used' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Number of downloads used'
            ),
            'link_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Link ID'
            ),
            'link_title' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Link Title'
            ),
            'is_shareable' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'default'   => '0',
                'comment'   => 'Shareable Flag'
            ),
            'link_url' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Link Url'
            ),
            'link_file' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Link File'
            ),
            'link_type' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 255,
                'comment'   => 'Link Type'
            ),
            'status' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TEXT,
                'length'    => 50,
                'comment'   => 'Status'
            ),
            'created_at' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TIMESTAMP,
                'nullable'  => false,
                'comment'   => 'Creation Time'
            ),
            'updated_at' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_TIMESTAMP,
                'nullable'  => false,
                'comment'   => 'Update Time'
            )
        ),
        'comment' => 'Downloadable Link Purchased Item Table'
    ),
    $installer->getTable('downloadable/product_price_indexer_idx') => array(
        'columns' => array(
            'entity_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Entity ID'
            ),
            'customer_group_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Customer Group ID'
            ),
            'website_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Website ID'
            ),
            'min_price' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_DECIMAL,
                'scale'     => 4,
                'precision' => 12,
                'nullable'  => false,
                'default'   => '0.0000',
                'comment'   => 'Minimum price'
            ),
            'max_price' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_DECIMAL,
                'scale'     => 4,
                'precision' => 12,
                'nullable'  => false,
                'default'   => '0.0000',
                'comment'   => 'Maximum price'
            )
        ),
        'comment' => 'Indexer Table for price of downloadable products'
    ),
    $installer->getTable('downloadable/product_price_indexer_tmp') => array(
        'columns' => array(
            'entity_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_INTEGER,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Entity ID'
            ),
            'customer_group_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Customer Group ID'
            ),
            'website_id' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_SMALLINT,
                'unsigned'  => true,
                'nullable'  => false,
                'primary'   => true,
                'comment'   => 'Website ID'
            ),
            'min_price' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_DECIMAL,
                'scale'     => 4,
                'precision' => 12,
                'nullable'  => false,
                'default'   => '0.0000',
                'comment'   => 'Minimum price'
            ),
            'max_price' => array(
                'type'      => Varien_Db_Ddl_Table::TYPE_DECIMAL,
                'scale'     => 4,
                'precision' => 12,
                'nullable'  => false,
                'default'   => '0.0000',
                'comment'   => 'Maximum price'
            )
        ),
        'comment' => 'Temporary Indexer Table for price of downloadable products'
    )
);

$installer->getConnection()->modifyTables($tables);


/**
 * Add indexes
 */
$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link'),
    $installer->getIdxName('downloadable/link', array('product_id')),
    array('product_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link'),
    $installer->getIdxName('downloadable/link', array('product_id', 'sort_order')),
    array('product_id', 'sort_order')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_price'),
    $installer->getIdxName('downloadable/link_price', array('link_id')),
    array('link_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_price'),
    $installer->getIdxName('downloadable/link_price', array('website_id')),
    array('website_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_purchased'),
    $installer->getIdxName('downloadable/link_purchased', array('order_id')),
    array('order_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_purchased'),
    $installer->getIdxName('downloadable/link_purchased', array('order_item_id')),
    array('order_item_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_purchased'),
    $installer->getIdxName('downloadable/link_purchased', array('customer_id')),
    array('customer_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_purchased_item'),
    $installer->getIdxName('downloadable/link_purchased_item', array('link_hash')),
    array('link_hash')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_purchased_item'),
    $installer->getIdxName('downloadable/link_purchased_item', array('order_item_id')),
    array('order_item_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_purchased_item'),
    $installer->getIdxName('downloadable/link_purchased_item', array('purchased_id')),
    array('purchased_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_title'),
    $installer->getIdxName(
        'downloadable/link_title',
        array('link_id', 'store_id'),
        Varien_Db_Adapter_Interface::INDEX_TYPE_UNIQUE
    ),
    array('link_id', 'store_id'),
    Varien_Db_Adapter_Interface::INDEX_TYPE_UNIQUE
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_title'),
    $installer->getIdxName('downloadable/link_title', array('link_id')),
    array('link_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/link_title'),
    $installer->getIdxName('downloadable/link_title', array('store_id')),
    array('store_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/sample'),
    $installer->getIdxName('downloadable/sample', array('product_id')),
    array('product_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/sample_title'),
    $installer->getIdxName(
        'downloadable/sample_title',
        array('sample_id', 'store_id'),
        Varien_Db_Adapter_Interface::INDEX_TYPE_UNIQUE
    ),
    array('sample_id', 'store_id'),
    Varien_Db_Adapter_Interface::INDEX_TYPE_UNIQUE
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/sample_title'),
    $installer->getIdxName('downloadable/sample_title', array('sample_id')),
    array('sample_id')
);

$installer->getConnection()->addIndex(
    $installer->getTable('downloadable/sample_title'),
    $installer->getIdxName('downloadable/sample_title', array('store_id')),
    array('store_id')
);


/**
 * Add foreign keys
 */
$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/link', 'product_id', 'catalog/product', 'entity_id'),
    $installer->getTable('downloadable/link'),
    'product_id',
    $installer->getTable('catalog/product'),
    'entity_id'
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/link_price', 'link_id', 'downloadable/link', 'link_id'),
    $installer->getTable('downloadable/link_price'),
    'link_id',
    $installer->getTable('downloadable/link'),
    'link_id'
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/link_price', 'website_id', 'core/website', 'website_id'),
    $installer->getTable('downloadable/link_price'),
    'website_id',
    $installer->getTable('core/website'),
    'website_id'
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/link_purchased', 'customer_id', 'customer/entity', 'entity_id'),
    $installer->getTable('downloadable/link_purchased'),
    'customer_id',
    $installer->getTable('customer/entity'),
    'entity_id',
    Varien_Db_Ddl_Table::ACTION_SET_NULL
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/link_purchased', 'order_id', 'sales/order', 'entity_id'),
    $installer->getTable('downloadable/link_purchased'),
    'order_id',
    $installer->getTable('sales/order'),
    'entity_id',
    Varien_Db_Ddl_Table::ACTION_SET_NULL
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName(
        'downloadable/link_purchased_item',
        'purchased_id',
        'downloadable/link_purchased',
        'purchased_id'
    ),
    $installer->getTable('downloadable/link_purchased_item'),
    'purchased_id',
    $installer->getTable('downloadable/link_purchased'),
    'purchased_id'
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/link_purchased_item', 'order_item_id', 'sales/order_item', 'item_id'),
    $installer->getTable('downloadable/link_purchased_item'),
    'order_item_id',
    $installer->getTable('sales/order_item'),
    'item_id',
    Varien_Db_Ddl_Table::ACTION_SET_NULL
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/link_title', 'link_id', 'downloadable/link', 'link_id'),
    $installer->getTable('downloadable/link_title'),
    'link_id',
    $installer->getTable('downloadable/link'),
    'link_id'
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/link_title', 'store_id', 'core/store', 'store_id'),
    $installer->getTable('downloadable/link_title'),
    'store_id',
    $installer->getTable('core/store'),
    'store_id'
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/sample', 'product_id', 'catalog/product', 'entity_id'),
    $installer->getTable('downloadable/sample'),
    'product_id',
    $installer->getTable('catalog/product'),
    'entity_id'
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/sample_title', 'sample_id', 'downloadable/sample', 'sample_id'),
    $installer->getTable('downloadable/sample_title'),
    'sample_id',
    $installer->getTable('downloadable/sample'),
    'sample_id'
);

$installer->getConnection()->addForeignKey(
    $installer->getFkName('downloadable/sample_title', 'store_id', 'core/store', 'store_id'),
    $installer->getTable('downloadable/sample_title'),
    'store_id',
    $installer->getTable('core/store'),
    'store_id'
);

$installer->endSetup();