DATACMNS-1018 - Reinstantiated ability to customize repository factory bean through annotation and XML namespace.

The refactoring for DATACMNS-867 has dropped support to customize the repository factory bean class on both the @Enable-annotations and the XML namespace. Reintroduced this feature, added a test case and moved the fallback into the value that's defined by the configuration extension inside DefaultRepositoryConfiguration.

Author: odrotbohm

Diff for: src/main/java/org/springframework/data/repository/config/AnnotationRepositoryConfigurationSource.java

@@ -211,10 +211,11 @@ private Optional<String> getNullDefaultedAttribute(String attributeName) {
 
 	/* 
 	 * (non-Javadoc)
-	 * @see org.springframework.data.repository.config.RepositoryConfigurationSource#getRepositoryFactoryBeanName()
+	 * @see org.springframework.data.repository.config.RepositoryConfigurationSource#getRepositoryFactoryBeanClassName()
 	 */
-	public String getRepositoryFactoryBeanName() {
-		return attributes.getClass(REPOSITORY_FACTORY_BEAN_CLASS).getName();
+	@Override
+	public Optional<String> getRepositoryFactoryBeanClassName() {
+		return Optional.of(attributes.getClass(REPOSITORY_FACTORY_BEAN_CLASS).getName());
 	}
 
 	/* 

Diff for: src/main/java/org/springframework/data/repository/config/DefaultRepositoryConfiguration.java

@@ -40,6 +40,7 @@ public class DefaultRepositoryConfiguration<T extends RepositoryConfigurationSou
 
 	private final @NonNull T configurationSource;
 	private final @NonNull BeanDefinition definition;
+	private final @NonNull RepositoryConfigurationExtension extension;
 
 	/*
 	 * (non-Javadoc)
@@ -133,7 +134,18 @@ public Optional<String> getRepositoryBaseClassName() {
 		return configurationSource.getRepositoryBaseClassName();
 	}
 
-	/* 
+	/*
+	 * (non-Javadoc)
+	 * @see org.springframework.data.repository.config.RepositoryConfiguration#getRepositoryFactoryBeanClassName()
+	 */
+	@Override
+	public String getRepositoryFactoryBeanClassName() {
+
+		return configurationSource.getRepositoryFactoryBeanClassName()
+				.orElseGet(() -> extension.getRepositoryFactoryBeanClassName());
+	}
+
+	/*
 	 * (non-Javadoc)
 	 * @see org.springframework.data.repository.config.RepositoryConfiguration#isLazyInit()
 	 */

Diff for: src/main/java/org/springframework/data/repository/config/RepositoryBeanDefinitionBuilder.java

@@ -84,7 +84,8 @@ public BeanDefinitionBuilder build(RepositoryConfiguration<?> configuration) {
 		Assert.notNull(registry, "BeanDefinitionRegistry must not be null!");
 		Assert.notNull(resourceLoader, "ResourceLoader must not be null!");
 
-		BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(extension.getRepositoryFactoryClassName());
+		BeanDefinitionBuilder builder = BeanDefinitionBuilder
+				.rootBeanDefinition(configuration.getRepositoryFactoryBeanClassName());
 
 		builder.getRawBeanDefinition().setSource(configuration.getSource());
 		builder.addConstructorArgValue(configuration.getRepositoryInterface());

Diff for: src/main/java/org/springframework/data/repository/config/RepositoryConfiguration.java

@@ -79,6 +79,13 @@ public interface RepositoryConfiguration<T extends RepositoryConfigurationSource
 	 */
 	Optional<String> getRepositoryBaseClassName();
 
+	/**
+	 * Returns the name of the repository factory bean class to be used.
+	 * 
+	 * @return
+	 */
+	String getRepositoryFactoryBeanClassName();
+
 	/**
 	 * Returns the source of the {@link RepositoryConfiguration}.
 	 * 

Diff for: src/main/java/org/springframework/data/repository/config/RepositoryConfigurationDelegate.java

@@ -137,7 +137,7 @@ public List<BeanComponentDefinition> registerRepositoriesIn(BeanDefinitionRegist
 
 			if (LOGGER.isDebugEnabled()) {
 				LOGGER.debug(REPOSITORY_REGISTRATION, extension.getModuleName(), beanName,
-						configuration.getRepositoryInterface(), extension.getRepositoryFactoryClassName());
+						configuration.getRepositoryInterface(), configuration.getRepositoryFactoryBeanClassName());
 			}
 
 			beanDefinition.setAttribute(FACTORY_BEAN_OBJECT_TYPE, configuration.getRepositoryInterface());

Diff for: src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtension.java

@@ -76,7 +76,7 @@ <T extends RepositoryConfigurationSource> Collection<RepositoryConfiguration<T>>
 	 * 
 	 * @return
 	 */
-	String getRepositoryFactoryClassName();
+	String getRepositoryFactoryBeanClassName();
 
 	/**
 	 * Callback to register additional bean definitions for a {@literal repositories} root node. This usually includes

Diff for: src/main/java/org/springframework/data/repository/config/RepositoryConfigurationExtensionSupport.java

@@ -232,15 +232,15 @@ public static boolean hasBean(Class<?> type, BeanDefinitionRegistry registry) {
 	/**
 	 * Creates a actual {@link RepositoryConfiguration} instance for the given {@link RepositoryConfigurationSource} and
 	 * interface name. Defaults to the {@link DefaultRepositoryConfiguration} but allows sub-classes to override this to
-	 * customize the behaviour.
+	 * customize the behavior.
 	 * 
 	 * @param definition will never be {@literal null} or empty.
 	 * @param configSource will never be {@literal null}.
 	 * @return
 	 */
 	protected <T extends RepositoryConfigurationSource> RepositoryConfiguration<T> getRepositoryConfiguration(
 			BeanDefinition definition, T configSource) {
-		return new DefaultRepositoryConfiguration<>(configSource, definition);
+		return new DefaultRepositoryConfiguration<>(configSource, definition, this);
 	}
 
 	/**

Diff for: src/main/java/org/springframework/data/repository/config/RepositoryConfigurationSource.java

@@ -57,7 +57,7 @@ public interface RepositoryConfigurationSource {
 	/**
 	 * Returns the configured postfix to be used for looking up custom implementation classes.
 	 * 
-	 * @return the postfix to use or {@literal null} in case none is configured.
+	 * @return the postfix to use or {@link Optional#empty()} in case none is configured.
 	 */
 	Optional<String> getRepositoryImplementationPostfix();
 
@@ -67,14 +67,21 @@ public interface RepositoryConfigurationSource {
 	Optional<String> getNamedQueryLocation();
 
 	/**
-	 * Returns the name of the repository base class to be used or {@literal null} if the store specific defaults shall be
-	 * applied.
+	 * Returns the name of the repository base class to be used or {@link Optional#empty()} if the store specific defaults
+	 * shall be applied.
 	 * 
 	 * @return
 	 * @since 1.11
 	 */
 	Optional<String> getRepositoryBaseClassName();
 
+	/**
+	 * Returns the name of the repository factory bean class or {@link Optional#empty()} if not defined in the source.
+	 * 
+	 * @return
+	 */
+	Optional<String> getRepositoryFactoryBeanClassName();
+
 	/**
 	 * Returns the source {@link BeanDefinition}s of the repository interfaces to create repository instances for.
 	 * 
@@ -88,7 +95,7 @@ public interface RepositoryConfigurationSource {
 	 * camel-case.
 	 * 
 	 * @param name must not be {@literal null} or empty.
-	 * @return the attribute with the given name or {@literal null} if not configured or empty.
+	 * @return the attribute with the given name or {@link Optional#empty()} if not configured or empty.
 	 * @since 1.8
 	 */
 	Optional<String> getAttribute(String name);

Diff for: src/main/java/org/springframework/data/repository/config/XmlRepositoryConfigurationSource.java

@@ -24,7 +24,6 @@
 import org.springframework.core.type.filter.TypeFilter;
 import org.springframework.data.config.TypeFilterParser;
 import org.springframework.data.config.TypeFilterParser.Type;
-import org.springframework.data.repository.query.QueryLookupStrategy;
 import org.springframework.data.repository.query.QueryLookupStrategy.Key;
 import org.springframework.data.util.ParsingUtils;
 import org.springframework.util.Assert;
@@ -162,6 +161,15 @@ public Optional<String> getRepositoryBaseClassName() {
 		return getNullDefaultedAttribute(element, REPOSITORY_BASE_CLASS_NAME);
 	}
 
+	/* 
+	 * (non-Javadoc)
+	 * @see org.springframework.data.repository.config.RepositoryConfigurationSource#getRepositoryFactoryBeanClassName()
+	 */
+	@Override
+	public Optional<String> getRepositoryFactoryBeanClassName() {
+		return getNullDefaultedAttribute(element, REPOSITORY_FACTORY_BEAN_CLASS_NAME);
+	}
+
 	private Optional<String> getNullDefaultedAttribute(Element element, String attributeName) {
 
 		String attribute = element.getAttribute(attributeName);
@@ -175,8 +183,7 @@ private Optional<String> getNullDefaultedAttribute(Element element, String attri
 	@Override
 	public boolean shouldConsiderNestedRepositories() {
 
-		return getNullDefaultedAttribute(element, CONSIDER_NESTED_REPOSITORIES).map(Boolean::parseBoolean)
-				.orElse(false);
+		return getNullDefaultedAttribute(element, CONSIDER_NESTED_REPOSITORIES).map(Boolean::parseBoolean).orElse(false);
 	}
 
 	/* 

Diff for: src/main/java/org/springframework/data/repository/core/support/DefaultRepositoryMetadata.java

@@ -15,6 +15,8 @@
  */
 package org.springframework.data.repository.core.support;
 
+import lombok.Getter;
+
 import java.io.Serializable;
 import java.util.List;
 
@@ -31,6 +33,7 @@
  * @author Oliver Gierke
  * @author Thomas Darimont
  */
+@Getter
 public class DefaultRepositoryMetadata extends AbstractRepositoryMetadata {
 
 	private static final String MUST_BE_A_REPOSITORY = String.format("Given type must be assignable to %s!",
@@ -53,24 +56,6 @@ public DefaultRepositoryMetadata(Class<?> repositoryInterface) {
 		this.domainType = resolveDomainType(repositoryInterface);
 	}
 
-	/* 
-	 * (non-Javadoc)
-	 * @see org.springframework.data.repository.core.RepositoryMetadata#getDomainType()
-	 */
-	@Override
-	public Class<?> getDomainType() {
-		return this.domainType;
-	}
-
-	/* 
-	 * (non-Javadoc)
-	 * @see org.springframework.data.repository.core.RepositoryMetadata#getIdType()
-	 */
-	@Override
-	public Class<? extends Serializable> getIdType() {
-		return this.idType;
-	}
-
 	@SuppressWarnings("unchecked")
 	private Class<? extends Serializable> resolveIdType(Class<?> repositoryInterface) {
 

Diff for: src/test/java/org/springframework/data/repository/config/DefaultRepositoryConfigurationUnitTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2013 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -16,11 +16,18 @@
 package org.springframework.data.repository.config;
 
 import static org.assertj.core.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+import lombok.EqualsAndHashCode;
+import lombok.Value;
+
+import java.util.Optional;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.junit.MockitoJUnitRunner;
+import org.springframework.beans.factory.config.BeanDefinition;
 import org.springframework.beans.factory.support.RootBeanDefinition;
 import org.springframework.data.repository.query.QueryLookupStrategy.Key;
 
@@ -34,11 +41,13 @@ public class DefaultRepositoryConfigurationUnitTests {
 
 	@Mock RepositoryConfigurationSource source;
 
+	BeanDefinition definition = new RootBeanDefinition("com.acme.MyRepository");
+	RepositoryConfigurationExtension extension = new SimplerRepositoryConfigurationExtension("factory", "module");
+
 	@Test
 	public void supportsBasicConfiguration() {
 
-		RepositoryConfiguration<RepositoryConfigurationSource> configuration = new DefaultRepositoryConfiguration<>(
-				source, new RootBeanDefinition("com.acme.MyRepository"));
+		RepositoryConfiguration<RepositoryConfigurationSource> configuration = getConfiguration(source);
 
 		assertThat(configuration.getConfigurationSource()).isEqualTo(source);
 		assertThat(configuration.getImplementationBeanName()).isEqualTo("myRepositoryImpl");
@@ -47,4 +56,28 @@ public void supportsBasicConfiguration() {
 		assertThat(configuration.getQueryLookupStrategyKey()).isEqualTo(Key.CREATE_IF_NOT_FOUND);
 		assertThat(configuration.isLazyInit()).isFalse();
 	}
+
+	@Test // DATACMNS-1018
+	public void usesExtensionFactoryBeanClassNameIfNoneDefinedInSource() {
+		assertThat(getConfiguration(source).getRepositoryFactoryBeanClassName()).isEqualTo("factory");
+	}
+
+	@Test // DATACMNS-1018
+	public void prefersSourcesRepositoryFactoryBeanClass() {
+
+		when(source.getRepositoryFactoryBeanClassName()).thenReturn(Optional.of("custom"));
+
+		assertThat(getConfiguration(source).getRepositoryFactoryBeanClassName()).isEqualTo("custom");
+	}
+
+	private DefaultRepositoryConfiguration<RepositoryConfigurationSource> getConfiguration(
+			RepositoryConfigurationSource source) {
+		return new DefaultRepositoryConfiguration<>(source, definition, extension);
+	}
+
+	@Value
+	@EqualsAndHashCode(callSuper = true)
+	private static class SimplerRepositoryConfigurationExtension extends RepositoryConfigurationExtensionSupport {
+		String repositoryFactoryBeanClassName, modulePrefix;
+	}
 }

Diff for: src/test/java/org/springframework/data/repository/config/RepositoryBeanDefinitionRegistrarSupportUnitTests.java

@@ -15,6 +15,7 @@
  */
 package org.springframework.data.repository.config;
 
+import static org.mockito.ArgumentMatchers.*;
 import static org.mockito.Mockito.*;
 
 import java.lang.annotation.Annotation;
@@ -120,7 +121,7 @@ protected RepositoryConfigurationExtension getExtension() {
 
 	static class DummyConfigurationExtension extends RepositoryConfigurationExtensionSupport {
 
-		public String getRepositoryFactoryClassName() {
+		public String getRepositoryFactoryBeanClassName() {
 			return DummyRepositoryFactoryBean.class.getName();
 		}
 

Diff for: src/test/java/org/springframework/data/repository/config/RepositoryConfigurationExtensionSupportUnitTests.java

@@ -66,7 +66,7 @@ protected String getModulePrefix() {
 		}
 
 		@Override
-		public String getRepositoryFactoryClassName() {
+		public String getRepositoryFactoryBeanClassName() {
 			return RepositoryFactorySupport.class.getName();
 		}