implementing a demand overwrite in Extbase

Controller.php

<?php
/**
 * Displays all Labors
 *
 * @param Tx_CdgLabors_Domain_Model_Demand $demand
 * @param array $demandOverwrite
 * @return string The rendered list view
 */
public function listAction(Tx_CdgLabors_Domain_Model_Demand $demand = NULL, array $demandOverwrite = NULL) {
	if (count($demandOverwrite)> 0) {
		if($demand === NULL) {
			$demand = t3lib_div::makeInstance('Tx_CdgLabors_Domain_Model_Demand');
		}
		$demandOverwrite = $this->initDemandOverwrite($demandOverwrite);
		$demand->overrideWithArray($demandOverwrite);
	}
	$this->view->assign('demand', $demand);
	//[...]
}
	
/*
 * populates the demandOverwrite with correct Objects
 * 
 * @param array the demandOverwrite to init
 * @return array initialized demandOverwrite
 */
public function initDemandOverwrite(array $demandOverwrite) {
	if ($demandOverwrite['labor'] > 0) {
		$demandOverwrite['labor'] = $this->laborRepository->findByUid($demandOverwrite['labor']);
	}
	if ($demandOverwrite['person'] > 0) {
		$demandOverwrite['person'] = $this->personRepository->findByUid($demandOverwrite['person']);
	}
	if (count($demandOverwrite['organisations']) > 0) {
		foreach($demandOverwrite['organisations'] as &$organisation) {
			$organisation = $this->organisationRepository->findByUid($organisation);
		}
		unset($organisation);
	}
	if (count($demandOverwrite['subjects']) > 0) {
		foreach($demandOverwrite['subjects'] as &$subject) {
			$subject = $this->subjectRepository->findByUid($subject);
		}
		unset($subject);
	}
	if (count($demandOverwrite['partners']) > 0) {
		foreach($demandOverwrite['partners'] as &$partner) {
			$partner = $this->partnerRepository->findByUid($partner);
		}
		unset($partner);
	}
	return $demandOverwrite;
}	

Demand.php

<?php
/**
 * provides the demand object as "plain" array, so it can be used also in link action as arguments
 * 
 * @param $nameSpace in which array it should be place
 * @return array
 */	
public function getOverrideArray($nameSpace = 'demandOverwrite') {
	$demandOverwrite = array();
	if ($this->getLabor()) {
		$demandOverwrite['labor'] = $this->getLabor();
	}
	if ($this->getPerson()) {
		$demandOverwrite['person'] = $this->getPerson();
	}
	if (count($this->getYears()) > 0) {
		$demandOverwrite['years'] = $this->getYears();
	}
	if (count($this->getOrganisations()) > 0) {
		$demandOverwrite['organisations'] = $this->getOrganisations();
	}
	if (count($this->getSubjects()) > 0) {
		$demandOverwrite['subjects'] = $this->getSubjects();
	}
	if (count($this->getStates()) > 0) {
		$demandOverwrite['states'] = $this->getStates();
	}
	if (count($this->getPartners()) > 0) {
		$demandOverwrite['partners'] = $this->getPartners();
	}
	if ($this->getSearchWord() !== NULL && $this->getSearchWord() !== '') {
		$demandOverwrite['searchWord'] = $this->getSearchWord();
	}
	if ($this->getSearchWordTime() > 0) {
		$demandOverwrite['searchWordTime'] = $this->getSearchWordTime();
	}
	
	return array($nameSpace => $demandOverwrite);
}

/**
 * the values of the passed array override the current values if the name of the key matches with a propertyname
 * 
 * @param array $overrideArray
 * @return $this
 */
public function overrideWithArray(array $overrideArray) {
	foreach ($overrideArray as $propertyName => $propertyValue) {
		$setterMethod = 'set' . ucfirst($propertyName);
		if (method_exists($this, $setterMethod)) {
			$this->{$setterMethod}($propertyValue);
		}
	}
	return this;
}