Fan In mediation primitive properties

You can specify values for mediation primitive properties either by using the property fields in the IBM® Integration Designer user interface or by using an XML format. The property field names displayed in IBM Integration Designer are generally different from the property names used when building a mediation flow using XML code. In the following information, icons are used to identify each property name used in IBM Integration Designer and the corresponding XML name. (Where applicable, XML names that are required, but not shown in IBM Integration Designer, are also described.)

Fan Out ID fanOutID

The identifier corresponding to the Fan Out mediation primitive that is associated with the Fan In.

Field detail	Value and notes
Required	Yes
Valid values	String Note:

Decision Type decisionType

The out terminal is fired when a decision point is reached.

Field detail	Value and notes
Required	Yes
Valid values	Count 0 A simple count. XPath 1 An XPath expression. Iterate 2 The Fan In mediation primitive waits to receive all the messages produced by the corresponding Fan Out mediation primitive, when the Fan Out primitive is in iterate mode. The valid type is Boolean: `true` or `false`. Note:
Default	Count

Enable timeout timeout

The time, in seconds, by which the decision point must be reached. The timeout period starts when the associated Fan Out fires an output terminal for the first time. If a message arrives at the Fan In in terminal after this timeout period, it is considered as being late and the incomplete terminal is fired.

Field detail	Value and notes
Required	Yes
Valid values	Integer Note:
Default	-1 The default value of `-1` means there is no timeout, and no messages will be considered as late.

Count count

The number of messages to receive before firing the out terminal.

Field detail	Value and notes
Required	Yes
Valid values	Integer Note:
Default	1

XPath Completion Expression xpathCompletionExpression

The XPath expression that must evaluate to true before firing the out terminal.

Field detail	Value and notes
Required	No
Valid values	XPath Note:

Considerations

The Async Timeout values for Service Invoke mediation primitives should not exceed the value of the Timeout property of the aggregation's Fan In.
Certain properties are promotable; therefore, you can change their value from the runtime administrative console. The following properties can be promoted:
- Count
- XPath
- Timeout

Sample XML code

<node name="endAggregation" type="FanIn>
  <property name="fanOutID" value="startAggregation"/>
  <property name="decisionType" value="2"/>
  <inputTerminal/>
  <inputTerminal name="stop"/>
  <outputTerminal/>
  <outputTerminal name="incomplete"/>
  <failTerminal/>
</node>