Developer Transformation Guide

10.2.2 Service Pack 1
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- 10.5.3
- 10.5.2
- 10.5
- 10.4.1
- 10.4.0
- 10.2.2 HotFix 1
- 10.2.2
- 10.2.1

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Using the Define Function Dialog Box to Define an Expression

Using the
Define Function
Dialog Box to Define an Expression

When you define a Java expression, you configure the function, create the expression, and generate the code that invokes the expression.

You can define the function and create the expression in the

Define Function

dialog box.

To create an expression function and use the expression in a Java transformation, complete the following

high-level

tasks:

Configure the function that invokes the expression, including the function name, description, and parameters. You use the function parameters when you create the expression.

Create the expression syntax and validate the expression.

Generate the Java code that invokes the expression.

The Developer places the code on the

Functions

code entry tab.

After you generate the Java code, call the generated function on the appropriate code entry tab to invoke an expression or get a JExpression object, based on whether you use the simple or advanced interface.

To validate an expression when you create the expression, you must use the

Define Function

dialog box.

Java Expressions

Step 1. Configure the Function

Step 2. Create and Validate the Expression

Step 3. Generate Java Code for the Expression

Creating an Expression and Generating Java Code by Using the Define Function Dialog Box