/**
* Get tax rate based on store shipping origin address settings
* This rate can be used for conversion store price including tax to
* store price excluding tax
*
* @param Varien_Object $request
* @return float
*/
public function getStoreRate($request, $store = null)
{
$storeRequest = $this->getRateOriginRequest($store)->setProductClassId($request->getProductClassId());
return $this->getRate($storeRequest);
}
/**
* Get information about tax rates applied to request
*
* @param Varien_Object $request
* @return array
*/
public function getAppliedRates($request)
{
if (!$request->getCountryId() || !$request->getCustomerClassId() || !$request->getProductClassId()) {
return array();
}
$cacheKey = $this->_getRequestCacheKey($request);
if (!isset($this->_rateCalculationProcess[$cacheKey])) {
$this->_rateCalculationProcess[$cacheKey] = $this->_getResource()->getCalculationProcess($request);
}
return $this->_rateCalculationProcess[$cacheKey];
}
/**
* Returns tax rates for request - either pereforms SELECT from DB, or returns already cached result
* Notice that productClassId due to optimization can be array of ids
*
* @param Varien_Object $request
* @return array
*/
protected function _getRates($request)
{
// Extract params that influence our SELECT statement and use them to create cache key
$storeId = Mage::app()->getStore($request->getStore())->getId();
$customerClassId = $request->getCustomerClassId();
$countryId = $request->getCountryId();
$regionId = $request->getRegionId();
$postcode = $request->getPostcode();
// Process productClassId as it can be array or usual value. Form best key for cache.
$productClassId = $request->getProductClassId();
$ids = is_array($productClassId) ? $productClassId : array($productClassId);
foreach ($ids as $key => $val) {
$ids[$key] = (int) $val;
// Make it integer for equal cache keys even in case of null/false/0 values
}
$ids = array_unique($ids);
sort($ids);
$productClassKey = implode(',', $ids);
// Form cache key and either get data from cache or from DB
$cacheKey = implode('|', array($storeId, $customerClassId, $productClassKey, $countryId, $regionId, $postcode));
if (!isset($this->_ratesCache[$cacheKey])) {
// Make SELECT and get data
$select = $this->_getReadAdapter()->select();
$select->from(array('main_table' => $this->getMainTable()), array('tax_calculation_rate_id', 'tax_calculation_rule_id', 'customer_tax_class_id', 'product_tax_class_id'))->where('customer_tax_class_id = ?', (int) $customerClassId);
if ($productClassId) {
$select->where('product_tax_class_id IN (?)', $productClassId);
}
$ifnullTitleValue = $this->_getReadAdapter()->getCheckSql('title_table.value IS NULL', 'rate.code', 'title_table.value');
$ruleTableAliasName = $this->_getReadAdapter()->quoteIdentifier('rule.tax_calculation_rule_id');
$select->join(array('rule' => $this->getTable('tax/tax_calculation_rule')), $ruleTableAliasName . ' = main_table.tax_calculation_rule_id', array('rule.priority', 'rule.position'))->join(array('rate' => $this->getTable('tax/tax_calculation_rate')), 'rate.tax_calculation_rate_id = main_table.tax_calculation_rate_id', array('value' => 'rate.rate', 'rate.tax_country_id', 'rate.tax_region_id', 'rate.tax_postcode', 'rate.tax_calculation_rate_id', 'rate.code'))->joinLeft(array('title_table' => $this->getTable('tax/tax_calculation_rate_title')), "rate.tax_calculation_rate_id = title_table.tax_calculation_rate_id " . "AND title_table.store_id = '{$storeId}'", array('title' => $ifnullTitleValue))->where('rate.tax_country_id = ?', $countryId)->where("rate.tax_region_id IN(?)", array(0, (int) $regionId));
$postcodeIsNumeric = is_numeric($postcode);
if ($postcodeIsNumeric) {
$selectClone = clone $select;
$selectClone->where('rate.zip_is_range IS NOT NULL');
}
$select->where('rate.zip_is_range IS NULL');
if ($request->getPostcode() != '*') {
$select->where("rate.tax_postcode IS NULL OR rate.tax_postcode IN('*', '', ?)", $this->_createSearchPostCodeTemplates($postcode));
if ($postcodeIsNumeric) {
$selectClone->where('? BETWEEN rate.zip_from AND rate.zip_to', $postcode);
}
}
/**
* @see ZF-7592 issue http://framework.zend.com/issues/browse/ZF-7592
*/
if ($postcodeIsNumeric) {
$select = $this->_getReadAdapter()->select()->union(array('(' . $select . ')', '(' . $selectClone . ')'));
}
$select->order('priority ' . Varien_Db_Select::SQL_ASC)->order('tax_calculation_rule_id ' . Varien_Db_Select::SQL_ASC)->order('tax_country_id ' . Varien_Db_Select::SQL_DESC)->order('tax_region_id ' . Varien_Db_Select::SQL_DESC)->order('tax_postcode ' . Varien_Db_Select::SQL_DESC)->order('value ' . Varien_Db_Select::SQL_DESC);
$this->_ratesCache[$cacheKey] = $this->_getReadAdapter()->fetchAll($select);
}
return $this->_ratesCache[$cacheKey];
}
/**
* Load select and return tax rates
*
* @param Varien_Object $request
* @return array
*/
protected function _getRates($request)
{
$storeId = Mage::app()->getStore($request->getStore())->getId();
$select = $this->_getReadAdapter()->select();
$select->from(array('main_table' => $this->getMainTable()))->where('customer_tax_class_id = ?', $request->getCustomerClassId());
if ($request->getProductClassId()) {
$select->where('product_tax_class_id IN (?)', $request->getProductClassId());
}
$select->join(array('rule' => $this->getTable('tax/tax_calculation_rule')), 'rule.tax_calculation_rule_id = main_table.tax_calculation_rule_id', array('rule.priority', 'rule.position'));
$select->join(array('rate' => $this->getTable('tax/tax_calculation_rate')), 'rate.tax_calculation_rate_id = main_table.tax_calculation_rate_id', array('value' => 'rate.rate', 'rate.tax_country_id', 'rate.tax_region_id', 'rate.tax_postcode', 'rate.tax_calculation_rate_id', 'rate.code'));
$select->joinLeft(array('title_table' => $this->getTable('tax/tax_calculation_rate_title')), "rate.tax_calculation_rate_id = title_table.tax_calculation_rate_id AND title_table.store_id = '{$storeId}'", array('title' => 'IFNULL(title_table.value, rate.code)'));
$select->where("rate.tax_country_id = ?", $request->getCountryId())->where("rate.tax_region_id in ('*', '', ?)", $request->getRegionId());
$selectClone = clone $select;
$select->where("rate.zip_is_range IS NULL")->where("rate.tax_postcode in ('*', '', ?)", $this->_createSearchPostCodeTemplates($request->getPostcode()));
$selectClone->where("rate.zip_is_range IS NOT NULL")->where("? BETWEEN rate.zip_from AND rate.zip_to", $request->getPostcode());
/**
* @see ZF-7592 issue http://framework.zend.com/issues/browse/ZF-7592
*/
$select = $this->_getReadAdapter()->select()->union(array('(' . $select . ')', '(' . $selectClone . ')'));
$order = array('priority ASC', 'tax_calculation_rule_id ASC', 'tax_country_id DESC', 'tax_region_id DESC', 'tax_postcode DESC', 'value DESC');
$select->order($order);
return $this->_getReadAdapter()->fetchAll($select);
}
