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Improve Javadoc of ItemProcessor regarding the nullability of input items #3648

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Improve Javadoc of ItemProcessor regarding the nullability of input items #3648

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6 changes: 4 additions & 2 deletions spring-batch-infrastructure/src/main/java/org/springframework/batch/item/ItemProcessor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -16,6 +16,7 @@

package org.springframework.batch.item;

import org.springframework.lang.NonNull;
import org.springframework.lang.Nullable;

/**
Expand All @@ -36,12 +37,13 @@ public interface ItemProcessor<I, O> {
* processing. If the returned result is null, it is assumed that processing of the item
* should not continue.
*
* @param item to be processed
* @param item to be processed. A {@code null} will never reach this method because the only possible sources
* are ItemReader (which indicates no more items) and ItemProcessor (which indicates a filtered item).
* @return potentially modified or new item for continued processing, {@code null} if processing of the
* provided item should not continue.
*
* @throws Exception thrown if exception occurs during processing.
*/
@Nullable
O process(I item) throws Exception;
O process(@NonNull I item) throws Exception;
}