Filter

Filters by default or when optional criteria is met in content or metadata.

Parameters

Name	Description	Allowed Values	Required	Default
filterBehavior	Filter if any, all, or no expression(s) match	ALL ANY NONE		ANY
filterExpressions	List of Spring Expression Language (SpEL) expressions used to filter	string (list)

Input

Metadata

If filterExpressions is configured, input metadata may be used to check filter conditions.

Output

Content

Input content is passed through unchanged when not filtered.

Filters

• On filterExpressions not set
• On filterExpressions set and ANY, ALL, or NONE matching

Details

Example SpEL expressions:

Filter if no content is JSON

!content.stream().anyMatch(c -> c.getMediaType.equals('application/json'))

Filter if metadata key 'x' is set to 'y'

metadata['x'] == 'y'

Filter if metadata key 'x' is not 'y' or is not present

metadata['x'] != 'y' || !metadata.containsKey('x')