User Guide

48 Using the Flex Data Service Assembler

Example application

This section describes creating a Flex application that uses the ColdFusion Data Service

adapter and Flex Data Service assembler so that a ColdFusion component handles the back-

end database management.

You can download the source code for the files that are included in the Flex sample Contact

application from “Using ColdFusion with Flex – Part 1: Creating and Running a Contact

Manager Application.” In addition, you can view the code for the Flex sample Contact

appliation in “The Flex Contact Manager Application” on page 62.

To use ColdFusion instead of the Java adapter:

1. Create the assembler CFC.

2. Create the DAO CFC.

3. Create the Value Object CFC.

4. Specify the destination in the data-management-config.xml file.

5. Copy the files for the Flex Contact sample application to the appropriate folders.

6. Run the application.

Creating the assembler CFC

The assembler CFC contains the fill, sync, get, and count methods.

Creating the fill method

In the Contact sample application, the fill operation has two forms: one that takes no

argument, and one that takes a string. The corresponding Java function returns a List of

Contact objects. Because a List corresponds to an array in ColdFusion, the

fill method

returns an array of Contact objects. The

fill method appears as follows:

<cffunction name="fill" output="no" returntype="samples.contact.Contact[]"

access="remote">

<cftry>

NOTE

To make creating the CFCs easier, ColdFusion MX 7.0.2 includes wizards that you

can use in Flex Builder. For more information, see Chapter 5, “Using the ColdFusion

Extensions for Flex Builder”.