In a stream definition in an output adapter map file, field specifies a column in a stream to publish.
adapter (required, limit one) |----rfa (required, limit one) '----subscriptions (required, limit one) '----subscription (required) '----stream (required) |----name (required, limit one) |----stale (optional) |----field (required) '----constant (optional)
stream
None
Name | Description | Requirement |
---|---|---|
column | A number that represents the position of the source column in the stream being published from (the first column in the stream has the number 0) | Either column or columnName is required |
columnName | The name of the column in the Event Stream Processor stream that carries the stream's unique identifier | Either column or columnName is required |
name | The FID that identifies this data value when published to RMDS | Required |
precision | An integer that specifies the total number of digits after the decimal point in the published value (for example, 1.23 has a precision of 2) | Optional |
The precision attribute should be included only for columns of datatype double.
<stream name="stream1" > <name column="0"/> <stale column="3" name="ACVOL_1"/> <field column="1" name="DSPLY_NAME" /> <field column="4" name="BID" precision="47" /> <field column="5" name="ASK" precision="0" /> <field column="6" name="TRDPRC_1"/> <field column="7" name="ACVOL_1"/> <constant name="PROD_PERM" value="1"/> </stream>
The adapter is configured to publish updates from the fourth, fifth, sixth and seventh columns of the Event Stream Processor stream named stream1 as data items named BID, ASK, TRDPRC_1, and ACVOL_1, respectively.