The access operator can be used to integrate new sources into Odysseus. Further information can be found in the Documentation to the Access Operator Framework.
Remark: There is no need to define an access operator as view (:=) or source (::=). Each access operator is automatically a source with name source. For most cases the assignment is only for parsing purposes (see example below).
Parameter
source:
The name of the access operator. Remark: This name must be different to all source names and all view or stream definitions! A new source will be added to the data dictionary automatically.wrapper:
In Odysseus the default wrappers are GenericPush and GenericPulltransport:
The transport defines the transport protocol to use.protocol:
The protocol parameter defines the application protocol to transform the processing results.datahandler:
This parameter defines the transform of the single attributes of the processing results.options:
Transport protocol and application protocol depending optionsschema:
The output schema of the access operator (may depend on the protocol handler)
Example
PQL
Access Operator
input = ACCESS({source='Source', wrapper='GenericPush', transport='TCPClient', protocol='CSV', dataHandler='Tuple', options=[['host', 'example.com'],['port', '8080'],['read', '10240'],['write', '10240']], schema=[ ['id', 'Double'], ['data', 'String']] })