Developing Apama Applications > Developing Apama Applications in EPL > Making Application Data Available to Clients > Looking Up Field Positions > DataViewGetFieldLookup
DataViewGetFieldLookup
Syntax
event DataViewGetFieldLookup {
   string msgId;
   string dvName;
   dictionary<string, string> extraParams;
}
Create and route an event of this type to request a helper dictionary that supports lookup of field position for a given field name. The response is provided by a DataViewFieldLookup or DataViewException event. For details, see DataViewFieldLookup and DataViewException.
Syntax description
msgId
Optional field for a message ID that applications can use to identify responses.
dvName
Unique name of the DataView definition whose field positions you want to look up.
extraParams
Optional field that future implementations may use.
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