MACROMEDIA COLFUSION MX 7 - INSTALLING AND USING COLDFUSION MX, Справочник

Страница: 1052 / 1108

1052 Chapter 6: ColdFusion MX Event Gateway Reference
CFML event gateway SendGatewayMessage data parameter
The ColdFusion CFML gateway type enables you to invoke CFC methods asynchronously. The
structure that you use in the
SendGatewayMessage
function
data
parameter can include two
types of fields:
•
Any number of fields can contain arbitrary contents for use in by the CFC.
•
Several optional fields can configure how the gateway delivers the information to the CFC.
The CFML gateway looks for the following optional fields, and, if they exist, uses them to
determine how it delivers the message. Do not use these field names for data that you send to
your CFC method.
Example
The following example consists of a CFML page that sends a message to a logevent method in the
file logger.CFC. The CFML page specifies the CFC and method to call, and sets the
OriginatorID.
<h3>Sending an event using a generic CFML event gateway and specifying the CFC
and method.</h3>
<cfscript>
status = False;
props = structNew();
props.cfcpath="C:\CFusionMX7\gateway\cfc\MyCFCs\logger.cfc";
props.method="logEvent";
props.OriginatorID=CGI.SCRIPT_NAME;
props.Message="Replace me with a variable with data to log";
props.file="GenericCFCtest";
props.type="warning";
status = SendGatewayMessage("DefaultCFC", props);
if (status IS True)
WriteOutput('Event Message "#props.Message#" has been sent.');
</cfscript>
Field Use
cfcpath Overrides the CFC path specified in the ColdFusion MX Administrator. This field
lets you use a single gateway configuration in the ColdFusion MX Administrator
multiple CFCs. This field sets the CFEvent object CFCPath variable.
method Specifies the name of the method to invoke in the CFC. The default method is
onIncomingMessage
. This field lets you use a single gateway configuration in the
ColdFusion MX Administrator for a CFC that has several methods. This field sets
the CFEvent object CFCMethod variable.
originatorID Sets the originatorID field of the CFEvent object that ColdFusion MX delivers to the
CFC. The default value is CFMLGateway.
timeout Sets the time-out, in seconds, during which the listener CFC must process the
event request and return before ColdFusion gateway services terminates the
request. The default value is the Timeout Request value set on the Server Settings
page in the ColdFusion MX Administrator. Set this value if a request might validly
take longer to process than the default time-out; for example, if the request involves
a very long processing time. This field sets the CFEvent object CFCTimeout
variable.