/**
* This function creates a single converter instance.
*
* @param ConverterDefinition $converterDefinition
*
* @throws InvalidConverterException
* @return ConverterInterface
*/
public static function createConverterInstance(ConverterDefinition $converterDefinition)
{
$class = $converterDefinition->getFullQualifiedClassName();
if (!class_exists($class)) {
$message = sprintf('The converter "%s" (%s) does not exist.', $converterDefinition->getClassName(), $class);
throw new InvalidConverterException($message);
}
$parameters = $converterDefinition->getParameters();
if ($parameters !== null) {
return new $class($parameters);
}
return new $class();
}
protected function parseConfig(array $config)
{
if (!isset($config['converters'])) {
$config['converters'] = [];
}
if (!isset($config['filters'])) {
$config['filters'] = [];
}
// Parse converter definitions and create objects
foreach ($config['converters'] as $columnName => $converters) {
foreach ($converters as $converterDef) {
$this->convertersDefinitions[$columnName][] = ConverterDefinition::factory($converterDef);
}
}
// Parse filter configurations and create filter objects
foreach ($config['filters'] as $filter) {
$operator = $filter[0];
$columnName = $filter[1];
$value = $filter[2];
if ($operator == 'depends') {
$referencedColumn = explode('.', $value);
if (count($referencedColumn) !== 2) {
throw new \InvalidArgumentException('Unexpected format for depends operator "' . $value . '". Expected format "table.column"');
}
$referencedTable = $referencedColumn[0];
$referencedColumn = $referencedColumn[1];
$this->dependentTables[] = $referencedTable;
$this->filters[] = new DataDependentFilter($columnName, $referencedTable, $referencedColumn);
} else {
$this->filters[] = new DefaultFilter($columnName, $operator, $value);
}
}
}
/**
* @param array $converterDefinitions
*
* @return ChainConverter
*/
private function createConditionalConverter($converterDefinitions)
{
$converters = [];
foreach ($converterDefinitions as $definition) {
$converterDefinition = ConverterDefinition::factory($definition);
$converters[] = DataConverter::createConverterInstance($converterDefinition);
}
if (count($converters) > 1) {
$converter = new ChainConverter($converters);
} else {
$converter = $converters[0];
}
return $converter;
}
