IBM BJ0NJML Integration Guide - Page 221
When to Evaluate the Field, Comparison Field Specifications, Type of Evaluation, Description, Value
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Conditions and Evaluations Type of Evaluation ISNOTNULL NONE EXISTS NOTEXISTS Description The specified field contains a value. This option is available only if the When to Evaluate field is configured as Changed or Not Changed. If NONE is selected, no further evaluation is necessary. Records exist in the specified object set. No records exist in the specified object set. When to Evaluate the Field For XML field and object field evaluations, the processing rule first determines whether it evaluates the specified data. The system evaluates the data by checking the Evaluate When field, which can have one the following values: Value CHANGED NOT CHANGED ALWAYS Action The evaluation continues only if the activity that generated the message changes the specified field. The evaluation continues only if the activity that generated the message does not change the specified field. The evaluation continues whether or not the value of the activity that generated the message (default) changes the specified field. If you specify this option, you cannot specify a comparison type of None. When a record is updated, a changed attribute (changed="1") appears on the corresponding field in the outbound message. This attribute determines whether the field meets the criteria in the Evaluate When field. This attribute does not appear in messages generated by the Data Export feature. Evaluations that are applied when a value has changed, might not provide the right output in a data export scenario. The changed attribute does not apply to inbound messages. Comparison Field Specifications If a processing rule uses one of the first eight evaluation types, it must specify the field (comparison field) with which it is making the comparison. The user interface displays subsets depending on the type of evaluation (XML field, object field, object set, or control). Integration Framework Customization with Processing Rules 207
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