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Concatenate

Short Description

Concatenate receives unsorted data records from multiple inputs.
It gathers input records starting with the first input port, continuing with the next one and ending with the last port. Within each input port, the records order is preserved.

COMPONENTSAME INPUT METADATASORTED INPUTSINPUTSOUTPUTSJAVACTLAUTO-PROPAGATED METADATA
Concatenatex1-n1--

Ports

PORT TYPENUMBERREQUIREDDESCRIPTIONMETADATA
Input0For input data recordsAny
1-nxFor input data recordsInput 0
Output0For gathered data recordsInput 0

At least one input port has to be connected. Any other input port can be disabled (changed in 4.1.0-M1).

Metadata

Metadata can be propagated through this component.

Metadata of all input ports must be the same.

Details

First, the component receives all of the records incoming through the first input port, sends all of them to the common output port and, subsequently, adds to them all of the records incoming through the next input port. If the component has more than two input ports, the records are received and sent to the output according to the order of the input ports.

If some of the input ports contain no records, such port is skipped.

See also

Merge
SimpleGather
Common Properties of Components
Specific attribute types
Common Properties of Transformers