<?php
/**
 * An interface for all customers
 *
 * @author	Roland Haeder <roland __NOSPAM__ [at] __REMOVE_ME__ mxchange [dot] org>
 * @version	0.1
 */
interface Customer extends FrameworkInterface {
	/**
	 * Adds a contract to the customer's list
	 *
	 * @param		$contractInstance	A valid instance to WorksContract
	 * @return	void
	 */
	function addNewWorksContract (SignableContract $contractInstance);

	/**
	 * Signs a works contract.
	 *
	 * @param		$contractInstance				A valid instance to WorksContract
	 * @param		$partnerInstance				An instance the other
	 *										contract partner
	 * @return	void
	 * @throws	NullPointerException			If an instance variable
	 *										is null
	 * @throws	NoObjectException				If an instance variable
	 *										is not an object
	 * @throws	MissingMethodException			If a required method was
	 *										not found in $contractInstance
	 * @throws	InvalidContractPartnerException	If the in $contractInstance
	 *										set contract partner is
	 *										not the expected
	 */
	function signContract (SignableContract $contractInstance, ContractPartner $partnerInstance);

	/**
	 * Withdraw from a signed contract
	 *
	 * @param		$contractInstance	A valid instance to WorksContract
	 * @return	void
	 */
	function withdrawFromContract (SignableContract $contractInstance);
}

// [EOF]
?>