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                                           724
CHAPTER 8                                                           Interactive Features



Example 8.21

  1 0 obj               XFA entry in interactive form dictionary
      << /XFA 10 0 R >>
  endobj

  10 0 obj
     stream
         <xdp:xdp xmlns:xdp="http://ns.adobe.com/xdp/">
         <template xmlns="http://www.xfa.org/schema/xfa-template/2.4/">
         ...remaining contents of template packet...
         </template>
         <xfa:datasets xmlns:xfa="http://www.xfa.org/schema/xfa-data/1.0/">
         ...contents of datasets packet...
         </xfa:datasets>
         <config xmlns="http://www.xfa.org/schema/xci/1.0/">
         ...contents of config node of XFA Data Package...
         <config>
         </xdp:xdp>
     endstream
  endobj

When an XFA entry is present in an interactive form dictionary, the XFA resource
provides most of the information about the form; in particular, all form-related
events such as calculations and validations. The other entries in the interactive
form dictionary must be consistent with the information in the XFA resource.
When creating or modifying a PDF file with an XFA resource, applications
should follow these guidelines:

• PDF interactive form field objects must be present for each field specified in
  the XFA resource. The XFA field values must be consistent with the corre-
  sponding V entries of the PDF field objects.
• The XFA Scripting Object Model (SOM) specifies a naming convention that
  must be used to connect interactive form field names with field names in the
  XFA resource. Information about this model is available in the XFA Specifica-
  tion, version 2.2 (see the Bibliography).
• No A or AA entries (see Table 8.15) should be present in the annotation dictio-
  naries of fields that also have actions specified by the XFA resource. The behav-
  ior of a field whose actions are specified in both ways is undefined.

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