public function executeFunction(FunctionJob $functionJob, ExecutionContext $context)
{
$functionName = $functionJob->getName();
/* @var $functionResolver FunctionResolverInterface */
$functionResolver = null;
if (isset($this->functionOverrides[$functionName])) {
$functionResolver = $this->functionOverrides[$functionName];
} else {
$functionName = preg_replace("/[^a-zA-Z0-9_]/is", "", $functionName);
$functionResolverClassName = ucfirst(strtolower($functionName)) . "Function";
$functionResolverClass = "Addiks\\PHPSQL\\ValueResolver\\FunctionResolver\\{$functionResolverClassName}";
# TODO: This few lines above are bad design, change it!
if (!class_exists($functionResolverClass)) {
throw new InvalidArgumentException("Function '{$functionName}' does not exist! ({$functionResolverClass})");
}
if (!is_subclass_of($functionResolverClass, FunctionInterface::class)) {
throw new ErrorException("Function '{$functionName}' does not implement FunctionInterface!");
}
$functionResolver = new $functionResolverClass($this->valueResolver);
}
$returnValue = $functionResolver->executeFunction($functionJob, $context);
return $returnValue;
}
public function resolveFunction(FunctionJob $functionJob, ExecutionContext $context)
{
$functionName = $functionJob->getName();
$classNameFunctionPart = str_replace("_", " ", strtolower($functionName));
$classNameFunctionPart = ucwords($classNameFunctionPart);
$classNameFunctionPart = str_replace(" ", "", $classNameFunctionPart);
$className = "\\Addiks\\PHPSQL\\{{$classNameFunctionPart}}";
if (!class_exists($className)) {
throw new ErrorException("Unknown or unimplemented function '{$functionName}' called! (No class '{$className}' found!)");
}
/* @var $functionExecuter FunctionResolver */
$functionExecuter = new $className();
$functionExecuter->setValueResolver($this);
$functionArguments = array();
foreach ($functionJob->getArguments() as $argument) {
if ($argument instanceof Parameter) {
$value = $argument->getValue();
} else {
$value = $argument;
}
$value = $this->resolveValue($value, $context);
$functionArguments[] = $value;
}
return $functionExecuter->executeFunction($functionJob, $functionArguments);
}