Join Paths

Synopsis

This operator delivers the first non-null input to its output.

Description

加入路径操作符可以有多个输入but it has only one output. This operator returns the first non-null input that it receives. This operator can be useful when some parts of the process are susceptible of producing null results which can halt the entire process. In such a scenario the Join Paths operator can be used to filter out this possibility.

Input

input

This operator can have multiple inputs. When one input is connected, anotherinputport becomes available which is ready to accept another input (if any). Multiple inputs can be provided but only the first non-null object will be returned by this operator.

Output

output

The first non-null object that this operator receives is returned through this port.