Building a Transformation Rule

Use the Transformation Rule Builder to define transformations for your maps. You can build a rule as a text string and then view the string in tree form.

When building a rule, you can add operators, functions, XSLT functions, or a Java method. To assist you in this process, review the guidelines for building rules before you begin.

To build a rule as a text string:

1. Double-click the link for which you want to build a rule.
   The Transformation Rule Builder opens on the canvas.

2. Place your cursor in the text box and choose from the following:

• Type a period [.] to display the entire selection list and double-click one of the following to add it to your rule:

Function -  To apply logic to your rule.

Operator - To define the rule evaluation types.

• Type a letter in the text box to limit your display to only those items that begin with that letter. Double-click the one you want added to your rule.

• Type the prefix syexts in the text box to display the Sybase-provided XSLT extension functions. Double-click the one you want to add to your rule.

• Type the prefix java_lang in the text box to display the available Java core methods. Double-click the one you want to add to your rule.

• For functions, such as Concat and Choose, with repeating arguments, right-click the string and select Add> from the shortcut menu to add arguments.

• Drag an icon from the tool palette and drop it into the text box.

3. Move the cursor to another location in the string, and repeat step 2 until your rule is complete.

4. To save your rule, select File>Save All from the menu bar.

5. To parse the rule and view it as a rule tree, double-click the string.
   To return to the string-form, double-click the root node of the tree.

6. Click to close the Transformation Rule Builder.