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DEVELOPING COLDFUSION 9 APPLICATIONS
Using External Resources
<cfcomponent>
<cffunction name="onBuddyStatus">
<cfargument name="CFEvent" type="struct" required="YES">
<cflock scope="APPLICATION" timeout="10" type="EXCLUSIVE">
<cfscript>
// Create the status structures if they don't exist.
if (NOT StructKeyExists(Application, "buddyStatus")) {
Application.buddyStatus=StructNew();
}
if (NOT StructKeyExists(Application.buddyStatus, CFEvent.Data.BUDDYNAME)) {
Application.buddyStatus[#CFEvent.Data.BUDDYNAME#]=StructNew();
}
// Save the buddy status and timestamp.
Application.buddyStatus[#CFEvent.Data.BUDDYNAME#].status=CFEvent.Data.BUDDYSTATUS;
Application.buddyStatus[#CFEvent.Data.BUDDYNAME#].timeStamp=CFEvent.Data.TIMESTAMP;
</cfscript>
</cflock>
</cffunction>
<cffunction name="onAddBuddyRequest">
<cfargument name="CFEvent" type="struct" required="YES">
<cfquery name="buddysearch" datasource="cfdocexamples">
select IM_ID
from Employees
where IM_ID = '#CFEvent.Data.SENDER#'
</cfquery>
<cflock scope="APPLICATION" timeout="10" type="EXCLUSIVE">
<cfscript>
// If the name is in the DB once, accept; if it is missing, decline.
// If it is in the DB multiple times, take no action.
if (buddysearch.RecordCount IS 0) {
action="decline";
reason="Invalid ID";
}
else if (buddysearch.RecordCount IS 1) {
action="accept";
reason="Valid ID";
//Add the buddy to the buddy status structure only if accepted.
if (NOT StructKeyExists(Application,
Application.buddyStatus=StructNew();
}
if (NOT StructKeyExists(Application.buddyStatus,
Application.buddyStatus[#CFEvent.Data.SENDER#]=StructNew();
}
Application.buddyStatus[#CFEvent.Data.SENDER#].status=
"Accepted Buddy Request";
Application.buddyStatus[#CFEvent.Data.SENDER#].timeStamp=
CFEvent.Data.TIMESTAMP;
Application.buddyStatus[#CFEvent.Data.SENDER#].message=
CFEvent.Data.MESSAGE;
}
else {
"buddyStatus")) {
CFEvent.Data.SENDER)) {
Last updated 8/5/2010
1285
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