Remove ApplicationInfo

Rework commit 4a69755b to remove the need for the ApplicationInfo class.
The updated code now uses the auto-configuration class to compute a
default persistence unit root location

Closes gh-6635

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/orm/jpa/JpaBaseConfiguration.java

@@ -16,18 +16,21 @@
 
 package org.springframework.boot.autoconfigure.orm.jpa;
 
+import java.net.URL;
 import java.util.List;
 import java.util.Map;
 
 import javax.persistence.EntityManagerFactory;
 import javax.sql.DataSource;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
 import org.springframework.beans.BeansException;
 import org.springframework.beans.factory.BeanFactory;
 import org.springframework.beans.factory.BeanFactoryAware;
 import org.springframework.beans.factory.ObjectProvider;
 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
-import org.springframework.boot.ApplicationInfo;
 import org.springframework.boot.autoconfigure.AutoConfigurationPackages;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
@@ -50,6 +53,7 @@ import org.springframework.orm.jpa.support.OpenEntityManagerInViewInterceptor;
 import org.springframework.orm.jpa.vendor.AbstractJpaVendorAdapter;
 import org.springframework.transaction.PlatformTransactionManager;
 import org.springframework.transaction.jta.JtaTransactionManager;
+import org.springframework.util.ResourceUtils;
 import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
 
@@ -65,6 +69,8 @@ import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter
 @Import(DataSourceInitializedPublisher.Registrar.class)
 public abstract class JpaBaseConfiguration implements BeanFactoryAware {
 
+	private final Log logger = LogFactory.getLog(getClass());
+
 	private final DataSource dataSource;
 
 	private final JpaProperties properties;
@@ -104,11 +110,9 @@ public abstract class JpaBaseConfiguration implements BeanFactoryAware {
 			ObjectProvider<PersistenceUnitManager> persistenceUnitManagerProvider) {
 		EntityManagerFactoryBuilder builder = new EntityManagerFactoryBuilder(
 				jpaVendorAdapter, this.properties.getProperties(),
-				persistenceUnitManagerProvider.getIfAvailable());
+				persistenceUnitManagerProvider.getIfAvailable(),
+				determinePersistenceUnitRootLocation());
 		builder.setCallback(getVendorCallback());
-		if (this.beanFactory.containsBean("springApplicationInfo")) {
-			builder.setApplicationInfo(this.beanFactory.getBean(ApplicationInfo.class));
-		}
 		return builder;
 	}
 
@@ -186,6 +190,19 @@ public abstract class JpaBaseConfiguration implements BeanFactoryAware {
 		this.beanFactory = (ConfigurableListableBeanFactory) beanFactory;
 	}
 
+	private URL determinePersistenceUnitRootLocation() {
+		Class<?> source = getClass();
+		try {
+			URL url = source.getProtectionDomain().getCodeSource().getLocation();
+			return ResourceUtils.extractJarFileURL(url);
+		}
+		catch (Exception ex) {
+			logger.info("Could not determine persistence "
+					+ "unit root location from " + source + " : " + ex);
+		}
+		return null;
+	}
+
 	@Configuration
 	@ConditionalOnWebApplication
 	@ConditionalOnClass(WebMvcConfigurerAdapter.class)

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -94,8 +94,8 @@ You can also use the `spring.main.banner-mode` property to determine if the bann
 to be printed on `System.out` (`console`), using the configured logger (`log`) or not
 at all (`off`).
 
-The printed banner will be available via an `ApplicationInfo` registered as a singleton
-bean under the name `springApplicationInfo`.
+The printed banner will be registered as a singleton bean under the name
+`springBootBanner`.
 
 [NOTE]
 ====

spring-boot-starters/spring-boot-starter-remote-shell/src/main/resources/commands/crash/login.groovy

@@ -11,9 +11,9 @@ welcome = { ->
 	// Try to print using the banner interface
 	if (beanFactory != null) {
 		try {
-			def appInfo = beanFactory.getBean("springApplicationInfo")
+			def banner = beanFactory.getBean("springBootBanner")
 			def out = new java.io.ByteArrayOutputStream()
-			appInfo.banner.printBanner(environment, null, new java.io.PrintStream(out))
+			banner.printBanner(environment, null, new java.io.PrintStream(out))
 			return out.toString()
 		} catch (Exception ex) {
 			// Ignore

spring-boot/src/main/java/org/springframework/boot/ApplicationInfo.java

@@ -1,65 +0,0 @@
-/*
- * Copyright 2012-2016 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
- *
- *      http://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.boot;
-
-/**
- * Provide application-related information such as the {@link ApplicationArguments} and
- * the {@link Banner}.
- *
- * @author Stephane Nicoll
- * @since 1.4.1
- */
-public final class ApplicationInfo {
-
-	private final Class<?> mainApplicationClass;
-
-	private final ApplicationArguments applicationArguments;
-
-	private final Banner banner;
-
-	protected ApplicationInfo(SpringApplication application,
-			ApplicationArguments applicationArguments, Banner banner) {
-		this.mainApplicationClass = application.getMainApplicationClass();
-		this.applicationArguments = applicationArguments;
-		this.banner = banner;
-	}
-
-	/**
-	 * Returns the main application class that has been deduced or explicitly configured.
-	 * @return the main application class or {@code null}
-	 */
-	public Class<?> getMainApplicationClass() {
-		return this.mainApplicationClass;
-	}
-
-	/**
-	 * Returns the {@link ApplicationArguments} used to start this instance.
-	 * @return the application arguments
-	 */
-	public ApplicationArguments getApplicationArguments() {
-		return this.applicationArguments;
-	}
-
-	/**
-	 * Returns the {@link Banner} used by this instance.
-	 * @return the banner or {@code null}
-	 */
-	public Banner getBanner() {
-		return this.banner;
-	}
-
-}

spring-boot/src/main/java/org/springframework/boot/SpringApplication.java

@@ -359,10 +359,6 @@ public class SpringApplication {
 		if (printedBanner != null) {
 			context.getBeanFactory().registerSingleton("springBootBanner", printedBanner);
 		}
-		ApplicationInfo applicationInfo = new ApplicationInfo(this, applicationArguments,
-				printedBanner);
-		context.getBeanFactory().registerSingleton("springApplicationInfo",
-				applicationInfo);
 
 		// Load the sources
 		Set<Object> sources = getSources();

spring-boot/src/main/java/org/springframework/boot/orm/jpa/EntityManagerFactoryBuilder.java

@@ -28,12 +28,10 @@ import javax.sql.DataSource;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
-import org.springframework.boot.ApplicationInfo;
 import org.springframework.orm.jpa.JpaVendorAdapter;
 import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
 import org.springframework.orm.jpa.persistenceunit.PersistenceUnitManager;
 import org.springframework.util.ClassUtils;
-import org.springframework.util.ResourceUtils;
 
 /**
  * Convenient builder for JPA EntityManagerFactory instances. Collects common
@@ -53,16 +51,16 @@ public class EntityManagerFactoryBuilder {
 	private static final Log logger = LogFactory
 			.getLog(EntityManagerFactoryBuilder.class);
 
-	private JpaVendorAdapter jpaVendorAdapter;
+	private final JpaVendorAdapter jpaVendorAdapter;
 
-	private PersistenceUnitManager persistenceUnitManager;
+	private final PersistenceUnitManager persistenceUnitManager;
 
-	private Map<String, Object> jpaProperties;
+	private final Map<String, Object> jpaProperties;
+
+	private final URL persistenceUnitRootLocation;
 
 	private EntityManagerFactoryBeanCallback callback;
 
-	private Class<?> applicationClass;
-
 	/**
 	 * Create a new instance passing in the common pieces that will be shared if multiple
 	 * EntityManagerFactory instances are created.
@@ -73,9 +71,27 @@ public class EntityManagerFactoryBuilder {
 	 */
 	public EntityManagerFactoryBuilder(JpaVendorAdapter jpaVendorAdapter,
 			Map<String, ?> jpaProperties, PersistenceUnitManager persistenceUnitManager) {
+		this(jpaVendorAdapter, jpaProperties, persistenceUnitManager, null);
+	}
+
+	/**
+	 * Create a new instance passing in the common pieces that will be shared if multiple
+	 * EntityManagerFactory instances are created.
+	 * @param jpaVendorAdapter a vendor adapter
+	 * @param jpaProperties JPA properties to be passed to the persistence provider.
+	 * @param persistenceUnitManager optional source of persistence unit information (can
+	 * be null)
+	 * @param persistenceUnitRootLocation the persistence unit root location to use as a
+	 * fallback (can be null)
+	 * @since 1.4.1
+	 */
+	public EntityManagerFactoryBuilder(JpaVendorAdapter jpaVendorAdapter,
+			Map<String, ?> jpaProperties, PersistenceUnitManager persistenceUnitManager,
+			URL persistenceUnitRootLocation) {
 		this.jpaVendorAdapter = jpaVendorAdapter;
 		this.persistenceUnitManager = persistenceUnitManager;
 		this.jpaProperties = new LinkedHashMap<String, Object>(jpaProperties);
+		this.persistenceUnitRootLocation = persistenceUnitRootLocation;
 	}
 
 	public Builder dataSource(DataSource dataSource) {
@@ -90,33 +106,6 @@ public class EntityManagerFactoryBuilder {
 		this.callback = callback;
 	}
 
-	/**
-	 * An optional {@link ApplicationInfo} used to further tune the entity manager.
-	 * @param applicationInfo the application info
-	 */
-	public void setApplicationInfo(ApplicationInfo applicationInfo) {
-		this.applicationClass = applicationInfo.getMainApplicationClass();
-	}
-
-	/**
-	 * Determine a persistence unit root location to use if no {@code persistence.xml} or
-	 * {@code orm.xml} are present in the project.
-	 * @return the persistence unit root location or {@code null}
-	 */
-	protected String determinePersistenceUnitRootLocation() {
-		if (this.applicationClass != null) {
-			try {
-				URL mainLocation = this.applicationClass.getProtectionDomain()
-						.getCodeSource().getLocation();
-				return ResourceUtils.extractJarFileURL(mainLocation).toString();
-			}
-			catch (Exception ex) {
-				logger.info("Could not determine persistence unit root location: " + ex);
-			}
-		}
-		return null;
-	}
-
 	/**
 	 * A fluent builder for a LocalContainerEntityManagerFactoryBean.
 	 */
@@ -220,9 +209,9 @@ public class EntityManagerFactoryBuilder {
 			entityManagerFactoryBean.getJpaPropertyMap()
 					.putAll(EntityManagerFactoryBuilder.this.jpaProperties);
 			entityManagerFactoryBean.getJpaPropertyMap().putAll(this.properties);
-			String rootLocation = determinePersistenceUnitRootLocation();
+			URL rootLocation = EntityManagerFactoryBuilder.this.persistenceUnitRootLocation;
 			if (rootLocation != null) {
-				entityManagerFactoryBean.setPersistenceUnitRootLocation(rootLocation);
+				entityManagerFactoryBean.setPersistenceUnitRootLocation(rootLocation.toString());
 			}
 			if (EntityManagerFactoryBuilder.this.callback != null) {
 				EntityManagerFactoryBuilder.this.callback

spring-boot/src/test/java/org/springframework/boot/BannerTests.java

@@ -100,9 +100,6 @@ public class BannerTests {
 		application.setWebEnvironment(false);
 		this.context = application.run();
 		assertThat(this.context.containsBean("springBootBanner")).isTrue();
-		assertThat(this.context.containsBean("springApplicationInfo")).isTrue();
-		assertThat(this.context.getBean("springApplicationInfo", ApplicationInfo.class)
-				.getBanner()).isNotNull();
 	}
 
 	@Test
@@ -112,9 +109,7 @@ public class BannerTests {
 		Banner banner = mock(Banner.class);
 		application.setBanner(banner);
 		this.context = application.run();
-		ApplicationInfo applicationInfo = this.context.getBean("springApplicationInfo",
-				ApplicationInfo.class);
-		Banner printedBanner = applicationInfo.getBanner();
+		Banner printedBanner = (Banner) this.context.getBean("springBootBanner");
 		assertThat(ReflectionTestUtils.getField(printedBanner, "banner"))
 				.isEqualTo(banner);
 		verify(banner).printBanner(any(Environment.class),
@@ -132,8 +127,6 @@ public class BannerTests {
 		application.setWebEnvironment(false);
 		this.context = application.run();
 		assertThat(this.context.containsBean("springBootBanner")).isFalse();
-		assertThat(this.context.getBean("springApplicationInfo", ApplicationInfo.class)
-				.getBanner()).isNull();
 	}
 
 	@Test
@@ -150,8 +143,6 @@ public class BannerTests {
 		this.context = application.run();
 		assertThat(this.out.toString()).contains("I printed a deprecated banner");
 		assertThat(this.context.containsBean("springBootBanner")).isFalse();
-		assertThat(this.context.getBean("springApplicationInfo", ApplicationInfo.class)
-				.getBanner()).isNull();
 	}
 
 	static class DummyBanner implements Banner {

spring-boot/src/test/java/org/springframework/boot/SpringApplicationTests.java

@@ -778,21 +778,6 @@ public class SpringApplicationTests {
 		assertThat(System.getProperty("java.awt.headless")).isEqualTo("false");
 	}
 
-	@Test
-	public void getApplicationInfo() {
-		TestSpringApplication application = new TestSpringApplication(
-				ExampleConfig.class);
-		application.setWebEnvironment(false);
-		this.context = application.run("foo");
-		ApplicationInfo applicationInfo = this.context.getBean(ApplicationInfo.class);
-		assertThat(application.getMainApplicationClass())
-				.isEqualTo(application.getMainApplicationClass());
-		assertThat(applicationInfo.getApplicationArguments()).isNotNull();
-		assertThat(applicationInfo.getApplicationArguments().getNonOptionArgs())
-				.containsExactly("foo");
-		assertThat(applicationInfo.getBanner()).isNotNull();
-	}
-
 	@Test
 	public void getApplicationArgumentsBean() throws Exception {
 		TestSpringApplication application = new TestSpringApplication(