Optional call chain can be simplified
Reports Optional call chains that can be simplified. Here are several examples of possible simplifications:
optional.map(x -> true).orElse(false)→optional.isPresent()optional.map(x -> Optional.of(x.trim())).orElseGet(Optional::empty)→optional.map(String::trim)optional.map(x -> (String)x).orElse(null)→(String) optional.orElse(null)Optional.ofNullable(optional.orElse(null))→optionalval = optional.orElse(null); val != null ? val : defaultExpr→optional.orElse(defaultExpr)val = optional.orElse(null); if(val != null) expr(val)→optional.ifPresent(val -> expr(val))
Locating this inspection
- By ID
Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.
SimplifyOptionalCallChains- Via Settings dialog
Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.
This inspection depends on the Java feature 'Stream and Optional API', which is available since Java 8.
Inspection ID: SimplifyOptionalCallChains
New in 2017.2
Suppressing Inspection
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
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