diff --git a/spring-batch-docs/modules/ROOT/pages/readers-and-writers/item-reader-writer-implementations.adoc b/spring-batch-docs/modules/ROOT/pages/readers-and-writers/item-reader-writer-implementations.adoc
index 573f9e1331..3a31e7d4c8 100644
--- a/spring-batch-docs/modules/ROOT/pages/readers-and-writers/item-reader-writer-implementations.adoc
+++ b/spring-batch-docs/modules/ROOT/pages/readers-and-writers/item-reader-writer-implementations.adoc
@@ -7,11 +7,9 @@ discussed in the previous sections.
[[decorators]]
== Decorators
-In some cases, a user needs specialized behavior to be appended to a pre-existing
-`ItemReader`. Spring Batch offers some out of the box decorators that can add
-additional behavior to to your `ItemReader` and `ItemWriter` implementations.
-
-Spring Batch includes the following decorators:
+In some cases, you might need specialized behavior to be appended to a pre-existing
+`ItemReader` or `ItemWriter` implementation.
+For this purpose, Spring Batch offers the following out-of-the-box decorators:
* xref:readers-and-writers/item-reader-writer-implementations.adoc#synchronizedItemStreamReader[`SynchronizedItemStreamReader`]
* xref:readers-and-writers/item-reader-writer-implementations.adoc#singleItemPeekableItemReader[`SingleItemPeekableItemReader`]
@@ -113,10 +111,12 @@ through the provided `Classifier`. Spring Batch provides a
The `MappingItemWriter` adapts an `ItemWriter` accepting items of a given type to one accepting
items of another type by applying a mapping function to each item before writing.
+Thread-safety is guaranteed as long as the downstream item writer is thread-safe, and state
+management is honored with a downstream `ItemStream` item writer.
This item writer is most useful when used in combination with a `CompositeItemWriter`, where the
mapping function in front of the downstream writer can be a getter of the input item or a more
-complex transformation logic.
+complex transformation logic, effectively allowing deconstruction patterns.
[[messagingReadersAndWriters]]
== Messaging Readers And Writers
diff --git a/spring-batch-infrastructure/src/main/java/org/springframework/batch/infrastructure/item/support/MappingItemWriter.java b/spring-batch-infrastructure/src/main/java/org/springframework/batch/infrastructure/item/support/MappingItemWriter.java
index 0d035f83ce..a92aae6a7e 100644
--- a/spring-batch-infrastructure/src/main/java/org/springframework/batch/infrastructure/item/support/MappingItemWriter.java
+++ b/spring-batch-infrastructure/src/main/java/org/springframework/batch/infrastructure/item/support/MappingItemWriter.java
@@ -17,6 +17,10 @@
package org.springframework.batch.infrastructure.item.support;
import org.springframework.batch.infrastructure.item.Chunk;
+import org.springframework.batch.infrastructure.item.ExecutionContext;
+import org.springframework.batch.infrastructure.item.ItemStream;
+import org.springframework.batch.infrastructure.item.ItemStreamException;
+import org.springframework.batch.infrastructure.item.ItemStreamWriter;
import org.springframework.batch.infrastructure.item.ItemWriter;
import java.util.function.Function;
@@ -25,10 +29,14 @@
* Adapts an {@link ItemWriter} accepting items of type {@link U} to one accepting items
* of type {@link T} by applying a mapping function to each item before writing.
*
- * The {@code MappingItemWriter} is most useful when used in combination with a
+ * Thread-safety is guaranteed as long as the downstream item writer is thread-safe, and
+ * state management is honored with a downstream {@link ItemStream} item writer.
+ *
+ * This adapter is most useful when used in combination with a
* {@link org.springframework.batch.infrastructure.item.support.CompositeItemWriter},
* where the mapping function in front of the downstream writer can be a getter of the
- * input item or a more complex transformation logic.
+ * input item or a more complex transformation logic, effectively allowing deconstruction
+ * patterns.
*