Before you begin
Create or open a DFDL schema file. See
DFDL schema editor for
a description of the
DFDL schema editor.
Procedure
- In the Editor view, select the DFDL
schema object on which you want to add an assert.
- On the Asserts and Discriminators tab
of the DFDL Properties area, select Asserts,
then click Add assert. If a discriminator is
already applied to the object, the Asserts option
is disabled, as an object cannot have both an assert and a discriminator
applied to it.
- Enter your test expression in the Test Condition field,
and a human-readable failure message in the Message field. Content assistance is available for the Test Condition field;
press Ctrl+Space to open the XPath Expression Builder.
Results
Your assert is used when the message model is run.