gistfile1.php

protected function determineTypeConverter($source, $targetType, \F3\FLOW3\Property\PropertyMappingConfigurationInterface $configuration) {
		if ($configuration->getTypeConverter() !== NULL) return $configuration->getTypeConverter();

		$sourceType = $this->determineSourceType($source);

		if (!is_string($targetType)) {
			throw new \F3\FLOW3\Property\Exception\InvalidTargetException('The target type was no string, but of type "' . gettype($targetType) . '"', 1297941727);
		}

		if (in_array($targetType, array('array', 'string', 'float', 'integer', 'boolean'))) {
			$converter = $this->findEligibleConverterWithHighestPriority($this->typeConverters[$sourceType][$targetType], $source, $targetType);
		} else {
			$converter = $this->findObjectTypeConverter($source, $sourceType, $targetType);
		}

		if (!is_object($converter) || !($converter instanceof \F3\FLOW3\Property\TypeConverterInterface)) {
			throw new \F3\FLOW3\Property\Exception\TypeConverterException('No converter found which can be used to convert from "' . $sourceType . '" to "' . $targetType . '".');
		}

		return $converter;
	}

	protected function findObjectTypeConverter($source, $sourceType, $targetClass) {
		$convertersForSource = $this->typeConverters[$sourceType];
		if (isset($convertersForSource[$targetClass])) {
			$converter = $this->findEligibleConverterWithHighestPriority($convertersForSource[$targetClass], $source, $targetClass);
			if ($converter !== NULL) return $converter;
		}

		foreach (class_parents($targetClass) as $parentClass) {
			if (!isset($convertersForSource[$parentClass])) continue;

			$converter = $this->findEligibleConverterWithHighestPriority($convertersForSource[$parentClass], $source, $targetClass);
			if ($converter !== NULL) return $converter;
		}

		$converters = $this->getConvertersForInterfaces($convertersForSource, class_implements($targetClass));
		return $this->findEligibleConverterWithHighestPriority($converters, $source, $targetClass);
	}

	protected function findEligibleConverterWithHighestPriority($converters, $source, $targetType) {
		krsort($converters);
		reset($converters);
		foreach ($converters as $converter) {
			if ($converter->canConvert($source, $targetType)) {
				return $converter;
			}
		}
		return NULL;
	}

	protected function getConvertersForInterfaces($convertersForSource, $interfaceNames) {
		$convertersForInterface = array();
		foreach ($interfaceNames as $implementedInterface) {
			if (isset($convertersForSource[$implementedInterface])) {
				foreach ($convertersForSource[$implementedInterface] as $priority => $converter) {
					if (isset($convertersForInterface[$priority])) {
						// Exception
					}
					$convertersForInterface[$priority] = $converter;
				}
			}
		}
		return $convertersForInterface;
	}