<?php
/**
 * A shipping company may be founded with this class
 *
 * @author		Roland Haeder <webmaster@ship-simu.org>
 * @version		0.0.0
 * @copyright	Copyright(c) 2007, 2008 Roland Haeder, this is free software
 * @license		GNU GPL 3.0 or any newer version
 * @link 		http://www.ship-simu.org
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
class ShippingCompany extends BaseSimulator implements Customer, ContractPartner {
	/**
	 * Full name of this company
	 */
	private $companyName     = "Namenlose Reederei";

	/**
	 * Shorted name of this company
	 */
	private $shortName       = "";

	/**
	 * Instance of the founder
	 */
	private $founderInstance = null;

	/**
	 * Employed people by this company
	 */
	private $employeeList    = null;

	/**
	 * Headquarter harbor instance
	 */
	private $hqInstance      = null;

	/**
	 * List of all assigned shipyards
	 */
	private $shipyardList   = null;

	/**
	 * List of owned ships
	 */
	private $ownedShips      = null;

	/**
	 * Work constracts this company is currently working on
	 */
	private $contractList    = null;

	/**
	 * Main constructor
	 *
	 * @return	void
	 */
	protected function __construct () {
		// Call parent constructor
		parent::__construct(__CLASS__);

		// Set description
		$this->setObjectDescription("Reederei");

		// Generate unique ID number
		$this->createUniqueID();

		// Clean up a little
		$this->removeSystemArray();
	}

	// Reederei gruenden (create wegen Namenskonvention)
	public final static function createShippingCompany ($companyName, Harbor $hqInstance) {
		// Get new instance
		$companyInstance = new ShippingCompany();

		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $companyInstance->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> wird gegr&uuml;ndet.<br />\n",
			__CLASS__,
			__LINE__,
			$companyName
		));

		// Firmennamen setzen
		$companyInstance->setCompanyName($companyName);

		// Kuerzel setzen
		$companyInstance->createShortName();

		// Sitz festlegen
		$companyInstance->setHQInstance($hqInstance);

		// Werftenliste erstellen
		$companyInstance->createshipyardList();

		// Angestellten-Liste erstellen
		$companyInstance->createEmployeeList();

		// Auftragsliste erstellen
		$companyInstance->createContractList();

		// Clean up a little
		$companyInstance->removeWidth();
		$companyInstance->removeHeight();
		$companyInstance->removeLength();
		$companyInstance->removeDraught();
		$companyInstance->removePartInstance();

		// Instanz zurueckgeben
		return $companyInstance;
	}

	// Angestellten-Liste erstellen
	private function createEmployeeList () {
		if ((defined('DEBUG_COMPANY_EMPLOYEE')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> erh&auml;lt eine Angestelltenliste.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName()
		));
		$this->employeeList = new FrameworkArrayObject();
	}

	// Werftenliste erstellen
	public function createShipyardList () {
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> erh&auml;lt eine Werftsliste.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName()
		));
		$this->shipyardList = new FrameworkArrayObject();
	}

	// Auftragsliste erstellen
	public function createContractList () {
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> erh&auml;lt eine Auftragsliste.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName()
		));
		$this->contractList = new FrameworkArrayObject();
	}

	// Setter-Methode fuer Firmennamen
	public final function setCompanyName ($companyName) {
		$this->companyName = (string) $companyName;
	}

	// Getter-Methode fuer Firmennamen
	public final function getCompanyName () {
		return $this->companyName;
	}

	// Setter-Methode fuer Firmensitz
	public final function setHQInstance (Harbor $hqInstance) {
		$this->hqInstance = $hqInstance;
	}

	// Kuerzel setzen
	private function createShortName () {
		// Mindestens eine Leerstelle?
		$dummy = explode(" ", $this->getCompanyName());
		foreach ($dummy as $part) {
			$this->shortName .= substr($part, 0, 1);
		}
	}

	// Reedereien Werften bauen lassen
	public function createShipyardInHarbor($shipyardName, Harbor $harborInstance) {
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> baut im <strong>%s</strong> eine Werft <strong>%s</strong>.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$harborInstance->getHarborName(),
			$shipyardName
		));

		// Wird im HQ gebaut?
		if ($this->hqInstance->equals($harborInstance)) {
			// Die neue Werft wird im HQ gebaut!
			$this->hqInstance->addNewShipyardNotify($shipyardName, $this);
			// Die Werft drueber in Kenntnis setzen, welcher Reederei sie angehoert
		} else {
			// Ausserhalb des Heimathafens soll eine Werft gebaut werden
			$harborInstance->addNewShipyardNotify($shipyardName, $this);
		}
	}

	// Setter fuer Reederei-Gruender
	public final function setCompanyFounder(CompanyEmployee $founderInstance) {
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> ist von <strong>%s %s</strong> gegr&uuml;ndet worden.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$founderInstance->getSurname(),
			$founderInstance->getFamily()
		));
		$this->founderInstance = $founderInstance;
	}

	// Getter for founder instance
	public final function getFounderInstance () {
		return $this->founderInstance;
	}

	// Neue(n) Angestellte(n) in Angestellten-Liste aufnehmen
	public function addNewEmployee (SimulatorPersonell $employeeInstance) {
		if ((defined('DEBUG_COMPANY_EMPLOYEE')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] <strong>%s %s</strong> tritt der Reederei <strong>%s</strong> als <strong>%s</strong> bei und erh&auml;lt ein Gehalt von <strong>%s</strong>.<br />\n",
			__CLASS__,
			__LINE__,
			$employeeInstance->getSurname(),
			$employeeInstance->getFamily(),
			$this->getCompanyName(),
			$employeeInstance->getObjectDescription(),
			$this->formatCurrency($employeeInstance->getSalary())
		));
		$this->employeeList->append($employeeInstance);
	}

	// Neue Werft in Liste aufnehmen
	public function addNewShipyard (Shipyard $shipyardInstance) {
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> erh&auml;lt die Werft <strong>%s</strong> hinzugef&uuml;gt.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$shipyardInstance->getShipyardName()
		));
		$this->shipyardList->append($shipyardInstance);
	}

	// Neue Mitarbeiter per Zufall einstellen/rekrutieren
	public function recruitRandomEmployees($amount, SimulatorPersonell $personellInstance) {
		// Anzahl Mitarbeiter absichern
		$amount = (int) $amount;

		// Debug-Meldung ausgeben
		if ((defined('DEBUG_COMPANY_EMPLOYEE')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> stellt per Zufall <strong>%d</strong> neue Mitarbeiter ein.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$amount
		));

		// Gesamtanzahl verfuegbarer Erwerbsloser holen
		$totalUnemployed = $personellInstance->getAllUnemployed();

		// Existiert die gewuenschte Anzahl freier Arbeiter? (doppelt geht derzeit nicht)
		if ($totalUnemployed < $amount) {
			// Reichte nicht aus!
			throw new ToMuchEmployeesException(array($amount, $personellInstance->getAllUnemployed()), self::EXCEPTION_NOT_ENOUGTH_UNEMPLOYEES);
		}

		// Get list for all unemployed people
		$list = $personellInstance->getSpecialPersonellList(false); // Should be cached

		// Get iterator of the list
		$iterator = $list->getIterator();

		// Get the requested amount of personell
		for ($idx = 0; $idx < $amount; $idx++) {
			$employee = null;
			// Is this personl unemployed?
			while (is_null($employee) || $employee->isEmployed()) {
				// Generate random number
				$pos = mt_rand(0, ($totalUnemployed - 1)); // Don't remove the -1 here:
				// E.g. 100 entries means latest position is 99...

				// Seek for the position
				$iterator->seek($pos);

				// Is the current position valid?
				if ($iterator->valid()) {
					// Element holen
					$employee = $iterator->current();
				} else {
					// Should normally not happen... :(
					throw new StructuresOutOfBoundsException($idx, self::EXCEPTION_INDEX_OUT_OF_BOUNDS);
				}
			}

			// A dummy just for the description and real class
			$dummy = CompanyEmployee::createCompanyEmployee("", "", "M", 1970, 1, 1, $employee->isMarried(), 0);

			// Make this person employed and give him some money to work
			$employee->setEmployed(true);
			$employee->setObjectDescription($dummy->getObjectDescription());
			$employee->setRealClass($dummy->__toString());
			$employee->increaseSalary((mt_rand(7, 14) * 100)); // Are 700 to 1400 EUR for the begin okay?

			// Debug message
			if ((defined('DEBUG_COMPANY_EMPLOYEE')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> stellt den/die Angestellte(n) <strong>%s %s</strong> ein.<br />\n",
				__CLASS__,
				__LINE__,
				$this->getCompanyName(),
				$employee->getSurname(),
				$employee->getFamily()
			));

			// Add this employee
			$this->addNewEmployee($employee);
		} // End - for

		// Cache resetten
		$personellInstance->resetCache();

		// Debug-Meldung ausgeben
		if ((defined('DEBUG_COMPANY_EMPLOYEE')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> hat per Zufall <strong>%d</strong> neue Mitarbeiter eingestellt.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$amount
		));
	} // End - method

	// Distribute all personells on all shipyards
	public function distributeAllPersonellOnShipyards () {
		if ((defined('DEBUG_COMPANY_EMPLOYEE')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> verteilt alle ihre <strong>%d</strong> Mitarbeiter auf alle <strong>%d</strong> Werft(en).<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$this->getTotalEmployee(),
			$this->getTotalShipyards()
		));

		// Do we have some shipyards?
		if (is_null($this->shipyardList)) {
			// No shipyards created
			throw new NoShipyardsConstructedException($this, self::EXCEPTION_HARBOR_HAS_NO_SHIPYARDS);
		}

		// Get iterator for shipyards
		$shipyardIter = $this->shipyardList->getIterator();

		// Iterate through all employees
		for ($idx = $this->employeeList->getIterator(); $idx->valid(); $idx->next()) {
			// Is the shipyard iterator still okay?
			if (!$shipyardIter->valid()) {
				// Rewind to first position
				$shipyardIter->seek(0);
			}

			// Get Shipyard object
			$shipyard = $shipyardIter->current();

			// Is this a Shipyard object?
			if (is_null($shipyard)) {
				// No class returned
				throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
			} elseif (!is_object($shipyard)) {
				// Not an object! ;-(
				throw new NoObjectException($shipyard, self::EXCEPTION_IS_NO_OBJECT);
			} elseif (!$shipyard->isClass("Shipyard")) {
				// Nope, so throw exception
				throw new ClassMismatchException(array($shipyard->__toString(), "Shipyard"), self::EXCEPTION_CLASSES_NOT_MATCHING);
			}

			// Add employee to the shipyard
			$shipyard->addNewPersonell($idx->current());

			// Continue to next shipyard
			$shipyardIter->next();
		}
	}

	// Getter for total employees
	public final function getTotalEmployee () {
		// Count all...
		$total = $this->employeeList->count();

		// Debug message
		if ((defined('DEBUG_COMPANY_EMPLOYEE')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> hat <strong>%d</strong> Mitarbeiter.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$total
		));

		// Return amount
		return $total;
	}

	// Getter for total shipyards
	public final function getTotalShipyards () {
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] F&uuml;r die Reederei <strong>%s</strong> werden die Anzahl der Werften in allen H&auml;fen ermittelt.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName()
		));

		// Do we have some shipyards?
		if (is_null($this->shipyardList)) {
			// No shipyards created
			throw new NoShipyardsConstructedException($this, self::EXCEPTION_HARBOR_HAS_NO_SHIPYARDS);
		}

		// Get iterator
		$total = $this->shipyardList->count();

		// Debug message
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> hat <strong>%d</strong> Werft(en).<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$total
		));

		// Return amount
		return $total;
	}

	// Add a ship type (class) to all shipyards
	public function addShipTypeToAllShipyards ($shipType) {
		// Secure strings
		$shipType = (string) $shipType;

		// Is the class there?
		if (!class_exists($shipType)) {
			// Throw exception
			throw new ClassNotFoundException($shipType, 0);
		}

		// Create dummy ship
		eval(sprintf("\$shipInstance = %s::create%s(\"M/S Dummy\");",
			$shipType,
			$shipType
		));

		// Debug message
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> baut in allen Werften bald Schiffe vom Typ <strong>%s</strong>.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$shipInstance->getObjectDescription()
		));

		// Iterate shipyard list
		for ($idx = $this->shipyardList->getIterator(); $idx->valid(); $idx->next()) {
			// Get current element
			$shipyard = $idx->current();

			// Is this a shipyard?
			if (is_null($shipyard)) {
				// Opps! Empty list?
				throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
			} elseif (!is_object($shipyard)) {
				// Not an object! ;-(
				throw new NoObjectException($shipyard, self::EXCEPTION_IS_NO_OBJECT);
			} elseif (!$shipyard->isClass("Shipyard")) {
				// Class is not a shipyard
				throw new ClassMismatchException(array($shipyard->__toString(), "Shipyard"), self::EXCEPTION_CLASSES_NOT_MATCHING);
			}

			// Add the new ship type to the shipyard
			$shipyard->addNewConstructableShipType($shipType);
		}
	}

	// Validate the requested ship type with the company if they can construct it
	public function validateWorksContractShipType (SignableContract $contractInstance) {
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> pr&uuml;ft den Bauauftrag der <strong>%s</strong>.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$contractInstance->getShipName()
		));

		// First get the ship type
		$shipInstance = $contractInstance->getShipInstance();

		// Ist there a ship instance?
		if (is_null($shipInstance)) {
			// Opps! Empty entry?
			throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
		} elseif (!is_object($shipInstance)) {
			// Not an object! ;-(
			throw new NoObjectException($shipInstance, self::EXCEPTION_IS_NO_OBJECT);
		}

		// Get it's real class name
		$shipType = $shipInstance->__toString();

		// Debug message
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> pr&uuml;ft, ob die <strong>%s</strong> (Typ:<strong>%s</strong>) gebaut werden kann.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$contractInstance->getShipName(),
			$shipInstance->getObjectDescription()
		));

		// Now check if the ship type is in any list and return the result
		return ($this->isShipTypeConstructable($shipType));
	}

	// Is the ship type constructable?
	public function isShipTypeConstructable ($shipType) {
		// The type must be a string!
		$shipType = (string) $shipType;

		// Debug message
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> fragt alle Werften ab, ob diese Schiffe vom Typ <strong>%s</strong> bauen k&ouml;nnen.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$shipType
		));

		// First everthing is failed...
		$result = false;

		// Iterate through all shipyards
		for ($idx = $this->shipyardList->getIterator(); $idx->valid(); $idx->next()) {
			// Get current Shipyard instance
			$shipyard = $idx->current();

			// Is this a shipyard?
			if (is_null($shipyard)) {
				// Opps! Empty list?
				throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
			} elseif (!is_object($shipyard)) {
				// Not an object! ;-(
				throw new NoObjectException($shipyard, self::EXCEPTION_IS_NO_OBJECT);
			} elseif (!$shipyard->isClass("Shipyard")) {
				// Class is not a shipyard
				throw new ClassMismatchException(array($shipyard->__toString(), "Shipyard"), self::EXCEPTION_CLASSES_NOT_MATCHING);
			}

			// Validate if the first found shipyard can construct the requested type
			$result = $shipyard->isShipTypeConstructable($shipType);

			// Does this shipyard construct the requested ship type?
			if ($result) break; // Then abort the search!
		}

		// Debug message
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> hat die Suche nach einer Werft beendet, die Schiffe vom Typ <strong>%s</strong> bauen kann.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$shipType
		));

		// Return result
		return $result;
	}

	// As a customer the shipping company can add new contracts
	public function addNewWorksContract (SignableContract $contractInstance) {
		if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> erstellt einen Bauauftrag f&uuml;r ein <strong>%s</strong> mit dem Namen <strong>%s</strong>.<br />\n",
			__CLASS__,
			__LINE__,
			$this->getCompanyName(),
			$contractInstance->getShipInstance()->getObjectDescription(),
			$contractInstance->getShipInstance()->getShipName()
		));
		$this->contractList->append($contractInstance);
	}

	// As a customer the shippng company can withdraw from a contract
	public function withdrawFromContract (SignableContract $contractInstance) {
		ApplicationEntryPoint::app_die("WITHDRAW:<pre>".print_r($contractInstance, true)."</pre>");
	}

	// Get latest added contract instance
	public final function getLastContractInstance () {
		// Get iterator
		$iter = $this->contractList->getIterator();

		// Get latest entry (total - 1)
		$iter->seek($iter->count() - 1);

		// Return entry
		return $iter->current();
	}

	// Sign a contract with an other party which must also implement Customer
	public function signContract (SignableContract $contractInstance, ContractPartner $partnerInstance) {
		// Check wether the other party is our contract partner
		if (!$partnerInstance->isContractPartner($contractInstance)) {
			// Invalid contract partner!
			throw new InvalidContractPartnerException($partnerInstance, self::EXCEPTION_CONTRACT_PARTNER_INVALID);
		}

		// Determine if company "signs" own contract (must be done) or with an other party
		if ($this->equals($partnerInstance)) {
			// With itself
			if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> erteilt an sich selbst einen Bauauftrag f&uuml;r das <strong>%s</strong> &quot;<strong>%s</strong>&quot;.<br />\n",
				__CLASS__,
				__LINE__,
				$this->getCompanyName(),
				$contractInstance->getShipInstance()->getObjectDescription(),
				$contractInstance->getShipInstance()->getShipName()
			));
		} else {
			// Other external company
			if ((defined('DEBUG_COMPANY')) || (defined('DEBUG_ALL'))) $this->getDebugInstance()->output(sprintf("[%s:%d] Die Reederei <strong>%s</strong> unterzeichnet einen Bauauftrag f&uuml;r das <strong>%s</strong> &quot;<strong>%s</strong>&quot; mit der <strong>%s</strong>.<br />\n",
				__CLASS__,
				__LINE__,
				$this->getCompanyName(),
				$contractInstance->getShipInstance()->getObjectDescription(),
				$contractInstance->getShipInstance()->getShipName(),
				$partnerInstance->getCompanyName()
			));
		}

		// Sign the contract
		$contractInstance->signContract($this, $partnerInstance);

		/**
		 * @todo	Maybe do something more here...
		 */
	}

	// Is this the right contract partner?
	public function isContractPartner (SignableContract $contractInstance) {
		// Get contract partner instance and compare it with $this contract partner
		return ($this->equals($contractInstance->getContractPartner()));
	}

	// Setter for merchant instance
	public final function setMerchantInstance (Merchant $merchantInstance) {
		// Get contract
		$contractInstance = $this->getLastContractInstance();

		if (is_null($contractInstance)) {
			// Opps! Empty contract instance?
			throw new NullPointerException($this, self::EXCEPTION_IS_NULL_POINTER);
		} elseif (!is_object($contractInstance)) {
			// Not an object! ;-(
			throw new NoObjectException($contractInstance, self::EXCEPTION_IS_NO_OBJECT);
		} elseif (!$contractInstance->isClass('WorksContract')) {
			// Is not a merchant
			throw new ClassMismatchException(array($contractInstance->__toString(), "WorksContract"), self::EXCEPTION_CLASSES_NOT_MATCHING);
		}

		// Set the merchant in the contract (for getting prices)
		$contractInstance->setMerchantInstance($merchantInstance);
	}

	/**
	 * Stub!
	 */
	public function saveObjectToDatabase () {
		$this->getDebugInstance()->output(sprintf("[%s:] Stub <strong>%s</strong> erreicht.",
			$this->__toString(),
			__FUNCTION__
		));
	}

	/**
	 * Limits this object with an ObjectLimits instance
	 */
	public function limitObject (ObjectLimits $limitInstance) {
		ApplicationEntryPoint::app_die("".__METHOD__." reached! Stub!");
	}
}

// [EOF]
?>