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id: version-0.68.0-org.apache.streampipes.processors.transformation.jvm.stringoperator.timer title: String Timer sidebar_label: String Timer original_id: org.apache.streampipes.processors.transformation.jvm.stringoperator.timer

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Description

This processor measures how long a value of a string field does not change. Once the value is changes the event with the measured time and the corresponding string value is emitted.

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Required input

A string field is required in the data stream.

Field

The string field which is monitored for any value changes.

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Configuration

Output Frequency

Define when an event should be emitted, either on each input event or just when the string value changes.

Output

The following two fields are appended to the event:

• [measured_time] the measured time for the string value to not change
• [field_value] the corresponding string value

The event is emitted whenever the value of the string field changes.