com.diffplug.spotless

Interface NoLambda

All Superinterfaces:

Serializable

All Known Subinterfaces:

FormatExceptionPolicy, LineEnding.Policy, SerializableFileFilter

All Known Implementing Classes:

FormatExceptionPolicyStrict, FormatterStep.Strict, LazyForwardingEquality, NoLambda.EqualityBasedOnSerialization

public interface NoLambda
extends Serializable

Marker interface to prevent lambda implementations of single-method interfaces that require serializability.

In order for Spotless to support up-to-date checks, all of its parameters must be Serializable so that entries can be written to file, and they must implement equals and hashCode correctly.

This interface and its standard implementation, NoLambda.EqualityBasedOnSerialization, are a quick way to accomplish these goals.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	NoLambda.EqualityBasedOnSerialization An implementation of NoLambda in which equality is based on the serialized representation of itself.

Method Summary

Modifier and Type	Method and Description
byte[]	toBytes() Returns a byte array representation of everything inside this SerializableFileFilter.

Method Detail

toBytes

byte[] toBytes()

Returns a byte array representation of everything inside this SerializableFileFilter.

The main purpose of this method is to ensure one can’t instantiate this class with lambda expressions, which are notoriously difficult to serialize and deserialize properly. (See SerializableFileFilterImpl.SkipFilesNamed for an example of how to make a serializable subclass.)