Select a value for the Basic property Compute
Mode. This property specifies which sections of the message tree
are modified by the node. The AggregateControl node inserts elements into
the LocalEnvironment tree in the input message that the AggregateRequest node
reads when the message reaches it. Ensure that the LocalEnvironment is copied
from the input message to the output message in the Compute node. This happens
automatically unless you specify a value that includes LocalEnvironment (one
of All, LocalEnvironment, LocalEnvironment and Message, or Exception and LocalEnvironment).
If
you specify one of these values, the broker assumes that you are customizing
the Compute node with ESQL that writes to LocalEnvironment, and that you will
copy over any elements within that tree that are required in the output message.
If
you want to modify LocalEnvironment, add the following statement to copy the
required aggregate information from input message to output message:
SET OutputLocalEnvironment.ComIbmAggregateControlNode =
InputLocalEnvironment.ComIbmAggregateControlNode;