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Introduce AOT to base projects of Spring Cloud Stream Samples
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‎docs/src/main/asciidoc/batch-starter.adoc‎

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@@ -597,3 +597,31 @@ Second, this starter lets you configure two properties on the writer.
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|===
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For more about the configuration options for the `KafkaItemWriter`, see the https://docs.spring.io/spring-batch/docs/4.3.x/api/org/springframework/batch/item/kafka/KafkaItemWriter.html[`KafkaItemWiter` documentation].
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=== Spring AOT
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When using Spring AOT with Single Step Batch Starter you must set the reader and
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writer name properties at compile time (unless you create a bean(s) for the reader and or writer).
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To do this you must include the name of the reader and writer that you wish to use as
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and argument or environment variable in the boot maven plugin or gradle plugin. For example if
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you wish to enable the `FlatFileItemReader` and `FlatFileItemWriter` in Maven it would look like:
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```
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<arguments>
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<argument>--spring.batch.job.flatfileitemreader.name=foobar</argument>
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<argument>--spring.batch.job.flatfileitemwriter.name=fooWriter</argument>
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</arguments>
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</configuration>
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</plugin>
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```

‎spring-cloud-task-samples/batch-events/pom.xml‎

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>

‎spring-cloud-task-samples/batch-job/pom.xml‎

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>

‎spring-cloud-task-samples/jpa-sample/pom.xml‎

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>

‎spring-cloud-task-samples/multiple-datasources/pom.xml‎

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>

‎spring-cloud-task-samples/task-events/pom.xml‎

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>

‎spring-cloud-task-samples/taskprocessor/pom.xml‎

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>

‎spring-cloud-task-samples/tasksink/pom.xml‎

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>

‎spring-cloud-task-samples/timestamp/pom.xml‎

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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<executions>
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<execution>
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<id>aot-generate</id>
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<goals>
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<goal>aot-generate</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>

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