Add @FunctionalInterface where appropriate

Resolves #4107
2022-04-29 20:29:52 +09:00
parent 8b6343fc8f
commit ed945ca61d
16 changed files with 46 additions and 15 deletions
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/JobParametersIncrementer.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/JobParametersIncrementer.java
@@ -23,8 +23,10 @@ import org.springframework.lang.Nullable;
 * @author Dave Syer
 * @author Lucas Ward
 * @author Mahmoud Ben Hassine
+ * @author Taeik Lim
 * @since 2.0
 */
+@FunctionalInterface
 public interface JobParametersIncrementer {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/JobParametersValidator.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/JobParametersValidator.java
@@ -23,8 +23,10 @@ import org.springframework.lang.Nullable;
 *
 * @author Dave Syer
 * @author Mahmoud Ben Hassine
+ * @author Taeik Lim
 *
 */
+@FunctionalInterface
 public interface JobParametersValidator {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/job/flow/JobExecutionDecider.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/job/flow/JobExecutionDecider.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2018 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -27,8 +27,10 @@ import org.springframework.lang.Nullable;
 *
 * @author Dave Syer
 * @author Mahmoud Ben Hassine
+ * @author Taeik Lim
 * @since 2.0
 */
+@FunctionalInterface
 public interface JobExecutionDecider {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/launch/JobLauncher.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/launch/JobLauncher.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -32,8 +32,9 @@ import org.springframework.batch.core.repository.JobRestartException;
 *
 * @author Lucas Ward
 * @author Dave Syer
+ * @author Taeik Lim
 */
-
+@FunctionalInterface
 public interface JobLauncher {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/partition/PartitionHandler.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/partition/PartitionHandler.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2021 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -30,8 +30,10 @@ import org.springframework.batch.item.ExecutionContext;
 *
 * @author Dave Syer
 * @author Mahmoud Ben Hassine
+ * @author Taeik Lim
 * @since 2.0
 */
+@FunctionalInterface
 public interface PartitionHandler {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/partition/support/Partitioner.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/partition/support/Partitioner.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -27,8 +27,10 @@ import org.springframework.batch.item.ExecutionContext;
 * unique filenames.
 *
 * @author Dave Syer
+ * @author Taeik Lim
 * @since 2.0
 */
+@FunctionalInterface
 public interface Partitioner {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/partition/support/StepExecutionAggregator.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/partition/support/StepExecutionAggregator.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2008-2009 the original author or authors.
+ * Copyright 2008-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -24,9 +24,11 @@ import org.springframework.batch.core.StepExecution;
 * partitioned or remote execution.
 *
 * @author Dave Syer
+ * @author Taeik Lim
 * @since 2.1
 *
 */
+@FunctionalInterface
 public interface StepExecutionAggregator {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/step/item/KeyGenerator.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/step/item/KeyGenerator.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -20,8 +20,10 @@ package org.springframework.batch.core.step.item;
 * itself cannot be modified to properly override equals.
 *
 * @author Dave Syer
+ * @author Taeik Lim
 *
 */
+@FunctionalInterface
 public interface KeyGenerator {

 	Object getKey(Object item);
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/step/job/JobParametersExtractor.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/step/job/JobParametersExtractor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2010 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -23,8 +23,10 @@ import org.springframework.batch.core.StepExecution;
 * Strategy interface for translating a {@link StepExecution} into {@link JobParameters}.
 *
 * @author Dave Syer
+ * @author Taeik Lim
 *
 */
+@FunctionalInterface
 public interface JobParametersExtractor {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/step/skip/SkipPolicy.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/step/skip/SkipPolicy.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2021 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -21,7 +21,9 @@ package org.springframework.batch.core.step.skip;
 * @author Lucas Ward
 * @author Dave Syer
 * @author Mahmoud Ben Hassine
+ * @author Taeik Lim
 */
+@FunctionalInterface
 public interface SkipPolicy {

 	/**
--- a/spring-batch-core/src/main/java/org/springframework/batch/core/step/tasklet/Tasklet.java
+++ b/spring-batch-core/src/main/java/org/springframework/batch/core/step/tasklet/Tasklet.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2018 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -25,8 +25,10 @@ import org.springframework.lang.Nullable;
 *
 * @author Dave Syer
 * @author Mahmoud Ben Hassine
+ * @author Taeik Lim
 *
 */
+@FunctionalInterface
 public interface Tasklet {

 	/**
--- a/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/ItemProcessor.java
+++ b/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/ItemProcessor.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2020 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -29,9 +29,11 @@ import org.springframework.lang.Nullable;
 * @author Robert Kasanicky
 * @author Dave Syer
 * @author Mahmoud Ben Hassine
+ * @author Taeik Lim
 * @param <I> type of input item
 * @param <O> type of output item
 */
+@FunctionalInterface
 public interface ItemProcessor<I, O> {

 	/**
--- a/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/ItemReader.java
+++ b/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/ItemReader.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2018 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -35,8 +35,10 @@ import org.springframework.lang.Nullable;
 * @author Dave Syer
 * @author Lucas Ward
 * @author Mahmoud Ben Hassine
+ * @author Taeik Lim
 * @since 1.0
 */
+@FunctionalInterface
 public interface ItemReader<T> {

 	/**
--- a/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/ItemWriter.java
+++ b/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/ItemWriter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -35,7 +35,9 @@ import java.util.List;
 *
 * @author Dave Syer
 * @author Lucas Ward
+ * @author Taeik Lim
 */
+@FunctionalInterface
 public interface ItemWriter<T> {

 	/**
--- a/spring-batch-infrastructure/src/main/java/org/springframework/batch/repeat/RepeatOperations.java
+++ b/spring-batch-infrastructure/src/main/java/org/springframework/batch/repeat/RepeatOperations.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -25,8 +25,10 @@ package org.springframework.batch.repeat;
 * but these should work the same whether they are in a batch or not.
 *
 * @author Dave Syer
+ * @author Taeik Lim
 *
 */
+@FunctionalInterface
 public interface RepeatOperations {

 	/**
--- a/spring-batch-infrastructure/src/main/java/org/springframework/batch/repeat/exception/ExceptionHandler.java
+++ b/spring-batch-infrastructure/src/main/java/org/springframework/batch/repeat/exception/ExceptionHandler.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2006-2007 the original author or authors.
+ * Copyright 2006-2022 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
@@ -28,8 +28,10 @@ import org.springframework.batch.repeat.RepeatContext;
 *
 * @author Dave Syer
 * @author Robert Kasanicky
+ * @author Taeik Lim
 *
 */
+@FunctionalInterface
 public interface ExceptionHandler {

 	/**