Filter
The filter component filters the data transferred to this component based on the specified expression and transfers the filtered data to subsequent nodes through node variables. Generally, a filter component is the subsequent node of a splitter component.
Configuration Parameters
|
Parameter |
Description |
|---|---|
|
Expression |
Expression for filtering data. Use an expression to filter data and transfer the filtered data to subsequent nodes. For example, if multiple data blocks are {"id":1} and {"id":2}, you can use expression ${payload.id} > 1 to filter for the data block {"id":2}. |
If no data matches the filtering expression, subsequent nodes of the Filter node will not be executed. The input in the expression complies with the Simple expression specifications.
Example
Example 1
Input:
- Data: {"id":1} and {"id":2}
- Expression: ${payload.id} > 1
Output:
- {"id":2}
Example 2
Input:
- Data: {"id": "123"} and {"id": "456"}
- Expression: ${payload.id} == "123"
Output:
- {"id": "123"}
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