Saturday, October 22, 2011

Add Mapping to ColdFusion Admin Programmatically

We all know that we can create mapping in ColdFusion server by CF Admin but the question arises here "Can we add a mapping to CF server programmatically". Ans : "YES".

Then How??


//"/MyMap" is the name of the mapping variable.

mapping = "/MyMap";
serviceFactory = createObject("java","coldfusion.server.ServiceFactory");
mappings = serviceFactory.runtimeService.getMappings();

//Shows all the mapping variables of the server before setting


//If the mapping variable is not present then create it
if(not(structKeyExists(mappings, mapping)))
mappings["/MyMap"] = "Physical directory Path";//e.g-“D:\Project\myPath”
//Shows all the mapping variables of the server after setting


In above code my mapping variable name is "MyMap". I have created a service factory object to get the mapping structure. Using that structure we can check whether your mapping is present or not and if the mapping is not present you can also create one mapping as shown above.

Thursday, October 06, 2011

Bug in script version of cfquery

We generally uses ColdFusion tags in our coding. But sometimes we prefer to use script version of that instead the tag. Also in ColdFusion 9.0.1 have a script version code for almost every tags.

In ColdFusion 9.0.1 the script version of cfquery has a bug as follows.

Let our table name is "USERS(USER_ID, FIRST_NAME, LAST_NAME, isDELETED)", which contains the users information.

If I want to get the data of a single user then I will write.


variables.q = new query();
USER_ID = :userID
isDELETED = 0');

//Set value in addParam equivalent to cfqueryparam
variables.q.addParam(name="userID", value="1", CFSQLTYPE="CF_SQL_INT");

//Executes the query and Extracts the result from the query object
variables.qry_getUser = variables.q.execute().getresult();

//To show the result


But unfortunately we will get the error message :

Error Executing Database Query
Parameter 'userID AND' not found in the list of parameters specified

Cause Of Problem:
While setting the variable ":userID" to the query string I have placed a line break after that variable and which is the culprit. If we will place a space character after the variable then it will not create any problem. Again for any other character other than space character will cause the problem, like if we replace tab instead of space then we will also face the same problem.

When you are using any variable in the query string then always give a space character after the variable.

For this problem I have just wasted 2-3 hr. So I thought it will help you :).