Operator AddSeq

Toolkits > com.ibm.streamsx.topology.pysamples 1.1.0 > com.ibm.streamsx.topology.pysamples.positional > AddSeq

Add a sequence number as the last attribute.

Python

@spl.map()
class AddSeq(object):
    """Add a sequence number as the last attribute."""
    def __init__(self):
        self.seq = 0

    def __call__(self, *tuple_):
        id = self.seq
        self.seq += 1
        return tuple_ + (id,)

Summary

Ports

This operator has 1 input port and 1 output port.

Windowing

This operator does not accept any windowing configurations.

Parameters

This operator does not support parameters.

Metrics

This operator does not report any metrics.

Properties

Implementation

C++

Threading

Always - Operator always provides a single threaded execution context.

Input Ports

Ports (0)

Tuple attribute values are passed by position to the Python callable.

Properties

• Optional: false

• ControlPort: false
• TupleMutationAllowed: false
• WindowingMode: NonWindowed
• WindowPunctuationInputMode: Oblivious

Output Ports

Assignments

This operator does not allow assignments to output attributes.

Ports (0)

Properties

• Optional: false

• TupleMutationAllowed: true
• WindowPunctuationOutputMode: Preserving

Libraries

SPLPY header

Include Path: ../../opt/.splpy/include

Python libraries.

Command: ../../opt/.splpy/common/pyversion3.sh