Magento Store Based EAV Entity Tables Setup Model

Setup.php

final class Dng_Customeav_Model_Setup extends Mage_Eav_Model_Entity_Setup
{
    /**
     * create store based eav entity tables
     *
     * @param string $baseName
     * @param array $options
     *      - (bool) no-main            don't create entity main table
     *      - (bool) no-default-types   don't create default types
     *      - (array) types             valid Types or custom types
     *         - 'datetime'  => array(Varien_Db_Ddl_Table::TYPE_DATETIME, null),
     *         -  'decimal'  => array(Varien_Db_Ddl_Table::TYPE_DECIMAL, '12,4'),
     *         - 'int'       => array(Varien_Db_Ddl_Table::TYPE_INTEGER, null),
     *         - 'text'      => array(Varien_Db_Ddl_Table::TYPE_TEXT, '64k'),
     *         - 'varchar'   => array(Varien_Db_Ddl_Table::TYPE_TEXT, '255'),
     *         - 'char'      => array(Varien_Db_Ddl_Table::TYPE_TEXT, '255')
     *
     * @return Mage_Eav_Model_Entity_Setup
     */
    public function createStoreBasedEntityTables($baseTableName, array $options = array())
    {
        parent::createEntityTables($baseTableName, $options);
 
        $isNoDefaultTypes = $this->_getValue($options, 'no-default-types', false);
        $customTypes = $this->_getValue($options, 'types', array());
 
        $types = array();
        if (!$isNoDefaultTypes) {
            $types = array(
                'datetime' => array(Varien_Db_Ddl_Table::TYPE_DATETIME, null),
                'decimal' => array(Varien_Db_Ddl_Table::TYPE_DECIMAL, '12,4'),
                'int' => array(Varien_Db_Ddl_Table::TYPE_INTEGER, null),
                'text' => array(Varien_Db_Ddl_Table::TYPE_TEXT, '64k'),
                'varchar' => array(Varien_Db_Ddl_Table::TYPE_TEXT, '255'),
                'char' => array(Varien_Db_Ddl_Table::TYPE_TEXT, '255')
            );
        }
 
        if (!empty($customTypes)) {
            foreach ($customTypes as $type => $fieldType) {
                $types[$type] = $fieldType;
            }
        }
 
        foreach (array_keys($types) as $type) {
            $this->getConnection()->addIndex(
                $this->getTable(array($baseTableName, $type)),
                $this->getIdxName(
                    array($baseTableName, $type),
                    array('entity_id', 'attribute_id', 'store_id'),
                    Varien_Db_Adapter_Interface::INDEX_TYPE_UNIQUE
                ),
                array('entity_id', 'attribute_id', 'store_id'),
                Varien_Db_Adapter_Interface::INDEX_TYPE_UNIQUE);
        }
 
        return $this;
    }
}