/**
* Usage:
* <code>
* $ack = new Net_HL7_Messages_ACK($request);
* </code>
*
* Convenience module implementing an acknowledgement (ACK) message. This
* can be used in HL7 servers to create an acknowledgement for an
* incoming message.
*
* @version 0.10
* @author D.A.Dokter <*****@*****.**>
* @access public
* @category Networking
* @package Net_HL7
* @license http://www.php.net/license/3_0.txt PHP License 3.0
*/
function Net_HL7_Messages_ACK($req = "")
{
parent::Net_HL7_Message();
if ($req) {
$msh =& $req->getSegmentByIndex(0);
if ($msh) {
$msh =& new Net_HL7_Segments_MSH($msh->getFields(1));
} else {
$msh =& new Net_HL7_Segments_MSH();
}
} else {
$msh =& new Net_HL7_Segments_MSH();
}
$msa =& new Net_HL7_Segment("MSA");
// Determine acknowledge mode: normal or enhanced
//
if ($req && ($msh->getField(15) || $msh->getField(16))) {
$this->_ACK_TYPE = "E";
$msa->setField(1, "CA");
} else {
$this->_ACK_TYPE = "N";
$msa->setField(1, "AA");
}
$this->addSegment($msh);
$this->addSegment($msa);
$msh->setField(9, "ACK");
// Construct an ACK based on the request
if ($req && $reqMsh) {
$msh->setField(3, $reqMsh->getField(5));
$msh->setField(4, $reqMsh->getField(6));
$msh->setField(5, $reqMsh->getField(3));
$msh->setField(6, $reqMsh->getField(4));
$msa->setField(2, $reqMsh->getField(10));
}
}
