diff --git a/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/database/orm/JpaNamedQueryProvider.java b/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/database/orm/JpaNamedQueryProvider.java
new file mode 100644
index 000000000..37829d6a3
--- /dev/null
+++ b/spring-batch-infrastructure/src/main/java/org/springframework/batch/item/database/orm/JpaNamedQueryProvider.java
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2020 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.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.batch.item.database.orm;
+
+import javax.persistence.Query;
+
+import org.springframework.util.Assert;
+import org.springframework.util.StringUtils;
+
+/**
+ *
+ * This query provider creates JPA named {@link Query}s.
+ *
+ *
+ * @author Mahmoud Ben Hassine
+ * @author Parikshit Dutta
+ * @since 4.3
+ *
+ * @param entity returned by executing the query
+ */
+public class JpaNamedQueryProvider extends AbstractJpaQueryProvider {
+
+ private Class entityClass;
+
+ private String namedQuery;
+
+ @Override
+ public Query createQuery() {
+ return getEntityManager().createNamedQuery(namedQuery, entityClass);
+ }
+
+ /**
+ * @param namedQuery name of a jpa named query
+ */
+ public void setNamedQuery(String namedQuery) {
+ this.namedQuery = namedQuery;
+ }
+
+ /**
+ * @param entityClazz name of a jpa entity class
+ */
+ public void setEntityClass(Class entityClazz) {
+ this.entityClass = entityClazz;
+ }
+
+ @Override
+ public void afterPropertiesSet() throws Exception {
+ Assert.isTrue(StringUtils.hasText(namedQuery), "Named query cannot be empty");
+ Assert.notNull(entityClass, "Entity class cannot be NULL");
+ }
+}
diff --git a/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/JpaPagingItemReaderNamedQueryIntegrationTests.java b/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/JpaPagingItemReaderNamedQueryIntegrationTests.java
new file mode 100644
index 000000000..cc780840b
--- /dev/null
+++ b/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/JpaPagingItemReaderNamedQueryIntegrationTests.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2020 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.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.batch.item.database;
+
+import javax.persistence.EntityManagerFactory;
+
+import org.springframework.batch.item.ItemReader;
+import org.springframework.batch.item.database.orm.JpaNamedQueryProvider;
+import org.springframework.batch.item.sample.Foo;
+import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
+import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
+
+/**
+ * Integration Test for {@link JpaPagingItemReader} and {@link JpaNamedQueryProvider}.
+ *
+ * @author Parikshit Dutta
+ */
+public class JpaPagingItemReaderNamedQueryIntegrationTests
+ extends AbstractGenericDataSourceItemReaderIntegrationTests {
+
+ @Override
+ protected ItemReader createItemReader() throws Exception {
+ LocalContainerEntityManagerFactoryBean factoryBean = new LocalContainerEntityManagerFactoryBean();
+ factoryBean.setDataSource(dataSource);
+ factoryBean.setJpaVendorAdapter(new HibernateJpaVendorAdapter());
+ factoryBean.setPersistenceUnitName("bar");
+ factoryBean.afterPropertiesSet();
+
+ EntityManagerFactory entityManagerFactory = factoryBean.getObject();
+
+ JpaNamedQueryProvider jpaNamedQueryProvider = new JpaNamedQueryProvider<>();
+ jpaNamedQueryProvider.setNamedQuery("allFoos");
+ jpaNamedQueryProvider.setEntityClass(Foo.class);
+ jpaNamedQueryProvider.afterPropertiesSet();
+
+ JpaPagingItemReader inputSource = new JpaPagingItemReader<>();
+ inputSource.setEntityManagerFactory(entityManagerFactory);
+ inputSource.setQueryProvider(jpaNamedQueryProvider);
+ inputSource.afterPropertiesSet();
+ inputSource.setSaveState(true);
+
+ return inputSource;
+ }
+}
diff --git a/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/builder/JpaPagingItemReaderBuilderTests.java b/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/builder/JpaPagingItemReaderBuilderTests.java
index 3e9399e0f..d9bea71ba 100644
--- a/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/builder/JpaPagingItemReaderBuilderTests.java
+++ b/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/builder/JpaPagingItemReaderBuilderTests.java
@@ -1,5 +1,5 @@
/*
- * Copyright 2017 the original author or authors.
+ * Copyright 2017-2020 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.
@@ -15,7 +15,9 @@
*/
package org.springframework.batch.item.database.builder;
+import java.util.ArrayList;
import java.util.HashMap;
+import java.util.List;
import java.util.Map;
import javax.persistence.EntityManagerFactory;
import javax.sql.DataSource;
@@ -26,6 +28,7 @@ import org.junit.Test;
import org.springframework.batch.item.ExecutionContext;
import org.springframework.batch.item.database.JpaPagingItemReader;
+import org.springframework.batch.item.database.orm.JpaNamedQueryProvider;
import org.springframework.batch.item.database.orm.JpaNativeQueryProvider;
import org.springframework.batch.item.sample.Foo;
import org.springframework.context.ConfigurableApplicationContext;
@@ -48,6 +51,7 @@ import static org.junit.Assert.fail;
/**
* @author Michael Minella
+ * @author Parikshit Dutta
*/
public class JpaPagingItemReaderBuilderTests {
@@ -134,6 +138,40 @@ public class JpaPagingItemReaderBuilderTests {
assertEquals(0, executionContext.size());
}
+ @Test
+ public void testConfigurationNamedQueryProvider() throws Exception {
+ JpaNamedQueryProvider namedQueryProvider = new JpaNamedQueryProvider<>();
+ namedQueryProvider.setNamedQuery("allFoos");
+ namedQueryProvider.setEntityClass(Foo.class);
+ namedQueryProvider.afterPropertiesSet();
+
+ JpaPagingItemReader reader = new JpaPagingItemReaderBuilder()
+ .name("fooReader")
+ .entityManagerFactory(this.entityManagerFactory)
+ .queryProvider(namedQueryProvider)
+ .build();
+
+ reader.afterPropertiesSet();
+
+ ExecutionContext executionContext = new ExecutionContext();
+ reader.open(executionContext);
+
+ Foo foo;
+ List foos = new ArrayList<>();
+
+ while((foo = reader.read()) != null) {
+ foos.add(foo);
+ }
+
+ reader.update(executionContext);
+ reader.close();
+
+ int id = 0;
+ for (Foo testFoo:foos) {
+ assertEquals(++id, testFoo.getId());
+ }
+ }
+
@Test
public void testConfigurationQueryProvider() throws Exception {
diff --git a/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/orm/JpaNamedQueryProviderTests.java b/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/orm/JpaNamedQueryProviderTests.java
new file mode 100644
index 000000000..84decf303
--- /dev/null
+++ b/spring-batch-infrastructure/src/test/java/org/springframework/batch/item/database/orm/JpaNamedQueryProviderTests.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2020 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.
+ * You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.batch.item.database.orm;
+
+import static org.junit.Assert.*;
+import org.junit.Test;
+
+import org.springframework.batch.item.sample.Foo;
+
+/**
+ * Test for {@link JpaNamedQueryProvider}s.
+ *
+ * @author Parikshit Dutta
+ */
+public class JpaNamedQueryProviderTests {
+
+ @Test
+ public void testJpaNamedQueryProviderNamedQueryIsProvided() {
+ JpaNamedQueryProvider jpaNamedQueryProvider = new JpaNamedQueryProvider<>();
+ jpaNamedQueryProvider.setEntityClass(Foo.class);
+
+ try {
+ jpaNamedQueryProvider.afterPropertiesSet();
+ }
+ catch (Exception exception) {
+ assertEquals("Named query cannot be empty", exception.getMessage());
+ }
+ }
+
+ @Test
+ public void testJpaNamedQueryProviderEntityClassIsProvided() {
+ JpaNamedQueryProvider jpaNamedQueryProvider = new JpaNamedQueryProvider<>();
+ jpaNamedQueryProvider.setNamedQuery("allFoos");
+
+ try {
+ jpaNamedQueryProvider.afterPropertiesSet();
+ }
+ catch (Exception exception) {
+ assertEquals("Entity class cannot be NULL", exception.getMessage());
+ }
+ }
+}