The system has attempted to use an undefined value, which usually indicates a programming error, either in your code or

Question

I have taken the cfdump for tmpqry and it shows all data for
the range ( No error at this step ) . But when we exceute this
dbquery we get below mentioned error .
<cfquery name="qry" dbtype="query" >
SELECT *
FROM tmpqry
ORDER BY #arguments.colSort# ASC
</cfquery>
senerio:
I am using createobject to create a reference for component
and call MDArraySort function in the cfc and getting this error .
'The system has attempted to use an undefined value, which
usually indicates a programming error, either in your code or some
system code.
Null pointer is undefined.... '
i am using this code in a cfc file.
<cffunction name="MDArraySort" Returntype="query"
access="public" >
<cfargument name="colArray" type="array"
required="true">
<cfargument name="colNames" type="string"
required="true">
<cfargument name="colSort" type="string"
required="true">
<cfargument name="sensorIDs" type="string"
required="true">
<cfscript>
var tmpqry = Querynew(arguments.colNames);
var qRow = QueryAddRow(tmpqry, Arraylen(arguments.colArray)
</cfscript>
<cfloop from="1" to="#Arraylen(arguments.colArray)#"
index="qRowIndex">
<cfscript>
sIndexinSensorIDs = colArray[qRowIndex]["SENSOR"]&"##";
Temp_readin_code =
colArray[qRowIndex]["READING_CODE"]&"##";
QuerySetCell(tmpqry, 'SENSOR', sIndexinSensorIDs,
qRowIndex);
QuerySetCell(tmpqry,
'TYPE',javacast('String',colArray[qRowIndex]["TYPE"]), qRowIndex);
QuerySetCell(tmpqry, 'TIMESTAMP2',
LSParseDateTime(colArray[qRowIndex]["TIMESTAMP2"]), qRowIndex);
QuerySetCell(tmpqry,
'ORDER_BY_PARAM',javacast('String',colArray[qRowIndex]["ORDER_BY_PARAM"]),
qRowIndex);
QuerySetCell(tmpqry, 'READING_CODE',Temp_readin_code ,
qRowIndex);
QuerySetCell(tmpqry,
'READING',javacast('String',colArray[qRowIndex]["READING"]),
qRowIndex);
QuerySetCell(tmpqry,
'PK_READING',javacast('String',colArray[qRowIndex]["PK_READING"]),
qRowIndex);
QuerySetCell(tmpqry,
'ALARM_STATUS',javacast('String',colArray[qRowIndex]["ALARM_STATUS"]),
qRowIndex);
QuerySetCell(tmpqry, 'DURATION',
javacast('String',colArray[qRowIndex]["DURATION"]), qRowIndex);
QuerySetCell(tmpqry,
'DESCRIPTION',javacast('String',colArray[qRowIndex]["DESCRIPTION"]),
qRowIndex);
</cfscript>
</cfloop>
<cfquery name="qry" dbtype="query" >
SELECT *
FROM tmpqry
ORDER BY #arguments.colSort# ASC
</cfquery>
<cfreturn qry >
</cffunction>
It is working fine for some date range and and getting above
mentioned error in sone situation .

Answer 1

Hi All ,
Thank you for your support ,
Finally i have fix the issue using some changes in my
function in cfc .
<cffunction name="MDArraySort" Returntype="query"
access="public" >
<cfargument name="colArray" type="array"
required="true">
<cfargument name="colNames" type="string"
required="true">
<cfargument name="colSort" type="string"
required="true">
<cfargument name="sensorIDs" type="string"
required="true">
<cfscript>
//Declare variable collection used in function as local
--->
var tmpqry =
Querynew(arguments.colNames,"CF_SQL_VARCHAR,CF_SQL_VARCHAR,CF_SQL_DATE,CF_SQL_VARCHAR,CF_ SQL_VARCHAR,CF_SQL_VARCHAR,CF_SQL_VARCHAR,CF_SQL_VARCHAR,CF_SQL_VARCHAR,CF_SQL_VARCHAR");
var qRow = QueryAddRow(tmpqry,
Arraylen(arguments.colArray));
</cfscript>
<cfloop from="1" to="#Arraylen(arguments.colArray)#"
index="qRowIndex">
<cfscript>
// Populate the query table
QuerySetCell(tmpqry, 'SENSOR',
colArray[qRowIndex]["SENSOR"], qRowIndex);
QuerySetCell(tmpqry,
'TYPE',arguments.colArray[qRowIndex]["TYPE"], qRowIndex);
QuerySetCell(tmpqry, 'TIMESTAMP2',
LSParseDateTime(arguments.colArray[qRowIndex]["TIMESTAMP2"]),
qRowIndex);
QuerySetCell(tmpqry,
'ORDER_BY_PARAM',arguments.colArray[qRowIndex]["ORDER_BY_PARAM"],
qRowIndex);
QuerySetCell(tmpqry, 'READING_CODE',
colArray[qRowIndex]["READING_CODE"] , qRowIndex);
QuerySetCell(tmpqry,
'READING',arguments.colArray[qRowIndex]["READING"], qRowIndex);
QuerySetCell(tmpqry,
'PK_READING',arguments.colArray[qRowIndex]["PK_READING"],
qRowIndex);
QuerySetCell(tmpqry,
'ALARM_STATUS',arguments.colArray[qRowIndex]["ALARM_STATUS"],
qRowIndex);
QuerySetCell(tmpqry, 'DURATION',
arguments.colArray[qRowIndex]["DURATION"], qRowIndex);
QuerySetCell(tmpqry,
'DESCRIPTION',arguments.colArray[qRowIndex]["DESCRIPTION"],
qRowIndex);
</cfscript>
</cfloop>
<cfquery name="qry" dbtype="query" >
SELECT *
FROM tmpqry
ORDER BY #arguments.colSort# ASC
</cfquery>
<cfreturn qry >
</cffunction>
Rajesh
SCMS
India