Use default methods for ProjectRequestPostProcessor

initializr-generator/src/main/java/io/spring/initializr/generator/ProjectRequestPostProcessor.java

@@ -37,7 +37,7 @@ public interface ProjectRequestPostProcessor {
 	 * @param metadata the metadata to use to resolve this request
 	 * @see ProjectRequest#resolve(InitializrMetadata)
 	 */
-	void postProcessBeforeResolution(ProjectRequest request, InitializrMetadata metadata);
+	default void postProcessBeforeResolution(ProjectRequest request, InitializrMetadata metadata) {}
 
 	/**
 	 * Apply this post processor to the given {@code ProjectRequest} <i>after</i> it has
@@ -48,6 +48,6 @@ public interface ProjectRequestPostProcessor {
 	 * @param request an resolved {@code ProjectRequest}
 	 * @param metadata the metadata that were used to resolve this request
 	 */
-	void postProcessAfterResolution(ProjectRequest request, InitializrMetadata metadata);
+	default void postProcessAfterResolution(ProjectRequest request, InitializrMetadata metadata) {}
 
 }

initializr-generator/src/main/java/io/spring/initializr/generator/ProjectRequestPostProcessorAdapter.java

@@ -1,23 +0,0 @@
-package io.spring.initializr.generator;
-
-import io.spring.initializr.metadata.InitializrMetadata;
-
-/**
- * An implementation of {@link ProjectRequestPostProcessor} with empty methods allowing
- * sub-classes to override only the methods they're interested in.
- *
- * @author Stephane Nicoll
- */
-public class ProjectRequestPostProcessorAdapter implements ProjectRequestPostProcessor {
-
-	@Override
-	public void postProcessBeforeResolution(ProjectRequest request,
-			InitializrMetadata metadata) {
-	}
-
-	@Override
-	public void postProcessAfterResolution(ProjectRequest request,
-			InitializrMetadata metadata) {
-	}
-
-}

initializr-generator/src/test/java/io/spring/initializr/generator/ProjectGeneratorTests.java

@@ -739,7 +739,7 @@ public class ProjectGeneratorTests extends AbstractProjectGeneratorTests {
 
 		// First after processor that flips Spring Boot version
 		projectGenerator.setRequestResolver(new ProjectRequestResolver(
-				Collections.singletonList(new ProjectRequestPostProcessorAdapter() {
+				Collections.singletonList(new ProjectRequestPostProcessor() {
 					@Override
 					public void postProcessBeforeResolution(ProjectRequest r,
 							InitializrMetadata m) {

initializr-generator/src/test/java/io/spring/initializr/generator/ProjectRequestResolverTests.java

@@ -63,7 +63,7 @@ public class ProjectRequestResolverTests {
 
 	@Test
 	public void afterResolution() {
-		postProcessors.add(new ProjectRequestPostProcessorAdapter() {
+		postProcessors.add(new ProjectRequestPostProcessor() {
 			@Override
 			public void postProcessAfterResolution(ProjectRequest request,
 					InitializrMetadata metadata) {

initializr-service/src/main/java/io/spring/initializr/service/extension/ReactorTestRequestPostProcessor.java

@@ -18,7 +18,6 @@ package io.spring.initializr.service.extension;
 
 import io.spring.initializr.generator.ProjectRequest;
 import io.spring.initializr.generator.ProjectRequestPostProcessor;
-import io.spring.initializr.generator.ProjectRequestPostProcessorAdapter;
 import io.spring.initializr.metadata.Dependency;
 import io.spring.initializr.metadata.InitializrMetadata;
 import io.spring.initializr.util.Version;
@@ -32,7 +31,7 @@ import org.springframework.stereotype.Component;
  * @author Stephane Nicoll
  */
 @Component
-public class ReactorTestRequestPostProcessor extends ProjectRequestPostProcessorAdapter {
+public class ReactorTestRequestPostProcessor implements ProjectRequestPostProcessor {
 
 	private static final Version VERSION_2_0_0_M2 = Version.parse("2.0.0.M2");
 

initializr-service/src/main/java/io/spring/initializr/service/extension/SpringBoot2RequestPostProcessor.java

@@ -17,7 +17,7 @@
 package io.spring.initializr.service.extension;
 
 import io.spring.initializr.generator.ProjectRequest;
-import io.spring.initializr.generator.ProjectRequestPostProcessorAdapter;
+import io.spring.initializr.generator.ProjectRequestPostProcessor;
 import io.spring.initializr.metadata.InitializrMetadata;
 import io.spring.initializr.util.Version;
 
@@ -30,7 +30,7 @@ import org.springframework.stereotype.Component;
  * @author Stephane Nicoll
  */
 @Component
-class SpringBoot2RequestPostProcessor extends ProjectRequestPostProcessorAdapter {
+class SpringBoot2RequestPostProcessor implements ProjectRequestPostProcessor {
 
 	private static final Version VERSION_2_0_0_M1 = Version.parse("2.0.0.M1");
 

initializr-web/src/test/java/io/spring/initializr/web/project/ProjectGenerationPostProcessorTests.java

@@ -18,7 +18,6 @@ package io.spring.initializr.web.project;
 
 import io.spring.initializr.generator.ProjectRequest;
 import io.spring.initializr.generator.ProjectRequestPostProcessor;
-import io.spring.initializr.generator.ProjectRequestPostProcessorAdapter;
 import io.spring.initializr.metadata.InitializrMetadata;
 import io.spring.initializr.web.AbstractInitializrControllerIntegrationTests;
 import io.spring.initializr.web.project.ProjectGenerationPostProcessorTests.ProjectRequestPostProcessorConfiguration;
@@ -52,7 +51,7 @@ public class ProjectGenerationPostProcessorTests
 		@Bean
 		@Order(2)
 		ProjectRequestPostProcessor secondPostProcessor() {
-			return new ProjectRequestPostProcessorAdapter() {
+			return new ProjectRequestPostProcessor() {
 				@Override
 				public void postProcessBeforeResolution(ProjectRequest request, InitializrMetadata metadata) {
 					request.setJavaVersion("1.7");
@@ -63,7 +62,7 @@ public class ProjectGenerationPostProcessorTests
 		@Bean
 		@Order(1)
 		ProjectRequestPostProcessor firstPostProcessor() {
-			return new ProjectRequestPostProcessorAdapter() {
+			return new ProjectRequestPostProcessor() {
 				@Override
 				public void postProcessBeforeResolution(ProjectRequest request, InitializrMetadata metadata) {
 					request.setJavaVersion("1.2");