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Rework SpringApplication `sources` property

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Update `SpringApplication` so that the `sources` property is
independent to the primary source provided on construction.

Prior to this commit the sources property was a little unusual in that
calling set would add to the existing collection.

Closes gh-8910
pull/7469/merge
Phillip Webb 8 years ago
parent 82b839e4fb
commit 39b33d30e1
2 changed files with 59 additions and 35 deletions
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90
spring-boot/src/main/java/org/springframework/boot/SpringApplication.java
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@ -80,7 +80,7 @@ import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.StandardServletEnvironment;
/**
* Classes that can be used to bootstrap and launch a Spring application from a Java main
* Class that can be used to bootstrap and launch a Spring application from a Java main
* method. By default class will perform the following steps to bootstrap your
* application:
*
@ -115,9 +115,9 @@ import org.springframework.web.context.support.StandardServletEnvironment;
*
* <pre class="code">
* public static void main(String[] args) throws Exception {
* SpringApplication app = new SpringApplication(MyApplication.class);
* // ... customize app settings here
* app.run(args)
* SpringApplication application = new SpringApplication(MyApplication.class);
* // ... customize application settings here
* application.run(args)
* }
* </pre>
*
@ -138,8 +138,8 @@ import org.springframework.web.context.support.StandardServletEnvironment;
* </ul>
*
* Configuration properties are also bound to the {@link SpringApplication}. This makes it
* possible to set {@link SpringApplication} properties dynamically, like the sources
* ("spring.main.sources" - a CSV list) the flag to indicate a web environment
* possible to set {@link SpringApplication} properties dynamically, like additional
* sources ("spring.main.sources" - a CSV list) the flag to indicate a web environment
* ("spring.main.web-application-type=none") or the flag to switch off the banner
* ("spring.main.banner-mode=off").
*
@ -215,7 +215,9 @@ public class SpringApplication {
private static final Log logger = LogFactory.getLog(SpringApplication.class);
private final Set<Object> sources = new LinkedHashSet<>();
private final Object[] primarySources;
private Set<Object> additionalSources = new LinkedHashSet<>();
private Class<?> mainApplicationClass;
@ -251,37 +253,38 @@ public class SpringApplication {
/**
* Create a new {@link SpringApplication} instance. The application context will load
* beans from the specified sources (see {@link SpringApplication class-level}
* beans from the specified primary sources (see {@link SpringApplication class-level}
* documentation for details. The instance can be customized before calling
* {@link #run(String...)}.
* @param sources the bean sources
* @param primarySources the primary bean sources
* @see #run(Object, String[])
* @see #SpringApplication(ResourceLoader, Object...)
* @see #setSources(Set)
*/
public SpringApplication(Object... sources) {
initialize(sources);
public SpringApplication(Object... primarySources) {
initialize(primarySources);
this.primarySources = primarySources;
}
/**
* Create a new {@link SpringApplication} instance. The application context will load
* beans from the specified sources (see {@link SpringApplication class-level}
* beans from the specified primary sources (see {@link SpringApplication class-level}
* documentation for details. The instance can be customized before calling
* {@link #run(String...)}.
* @param resourceLoader the resource loader to use
* @param sources the bean sources
* @param primarySources the primary bean sources
* @see #run(Object, String[])
* @see #SpringApplication(ResourceLoader, Object...)
* @see #setSources(Set)
*/
public SpringApplication(ResourceLoader resourceLoader, Object... sources) {
public SpringApplication(ResourceLoader resourceLoader, Object... primarySources) {
this.resourceLoader = resourceLoader;
initialize(sources);
this.primarySources = primarySources;
initialize(primarySources);
}
@SuppressWarnings({ "unchecked", "rawtypes" })
private void initialize(Object[] sources) {
if (sources != null && sources.length > 0) {
this.sources.addAll(Arrays.asList(sources));
}
this.webApplicationType = deduceWebApplication();
setInitializers((Collection) getSpringFactoriesInstances(
ApplicationContextInitializer.class));
@ -395,7 +398,7 @@ public class SpringApplication {
}
// Load the sources
Set<Object> sources = getSources();
Set<Object> sources = getAllSources();
Assert.notEmpty(sources, "Sources must not be empty");
load(context, sources.toArray(new Object[sources.size()]));
listeners.contextLoaded(context);
@ -1130,27 +1133,46 @@ public class SpringApplication {
/**
* Returns a mutable set of the sources that will be added to an ApplicationContext
* when {@link #run(String...)} is called.
* <p>
* Sources set here will be used in addition to any primary sources set in the
* constructor.
* @return the sources the application sources.
* @see #SpringApplication(Object...)
* @see #getAllSources()
*/
public Set<Object> getSources() {
return this.sources;
return this.additionalSources;
}
/**
* The sources that will be used to create an ApplicationContext. A valid source is
* one of: a class, class name, package, package name, or an XML resource location.
* Can also be set using constructors and static convenience methods (e.g.
* {@link #run(Object[], String[])}).
* Set additional sources that will be used to create an ApplicationContext. A source
* can be: a class, class name, package, package name, or an XML resource location.
* <p>
* NOTE: sources defined here will be used in addition to any sources specified on
* construction.
* Sources set here will be used in addition to any primary sources set in the
* constructor.
* @param sources the sources to set
* @see #SpringApplication(Object...)
* @see #getAllSources()
*/
public void setSources(Set<Object> sources) {
Assert.notNull(sources, "Sources must not be null");
this.sources.addAll(sources);
this.additionalSources = new LinkedHashSet<>(sources);
}
/**
* Return an immutable set of all the sources that will be added to an
* ApplicationContext when {@link #run(String...)} is called. This method combines any
* primary sources specified in the constructor with any additional ones that have
* been {@link #setSources(Set) explicitly set}.
* @return an immutable set of all sources
*/
public Set<Object> getAllSources() {
Set<Object> allSources = new LinkedHashSet<>();
if (!ObjectUtils.isEmpty(this.primarySources)) {
allSources.addAll(Arrays.asList(this.primarySources));
}
allSources.addAll(this.additionalSources);
return Collections.unmodifiableSet(allSources);
}
/**
@ -1246,23 +1268,25 @@ public class SpringApplication {
/**
* Static helper that can be used to run a {@link SpringApplication} from the
* specified source using default settings.
* @param source the source to load
* @param primarySource the primary source to load
* @param args the application arguments (usually passed from a Java main method)
* @return the running {@link ApplicationContext}
*/
public static ConfigurableApplicationContext run(Object source, String... args) {
return run(new Object[] { source }, args);
public static ConfigurableApplicationContext run(Object primarySource,
String... args) {
return run(new Object[] { primarySource }, args);
}
/**
* Static helper that can be used to run a {@link SpringApplication} from the
* specified sources using default settings and user supplied arguments.
* @param sources the sources to load
* @param primarySources the primary sources to load
* @param args the application arguments (usually passed from a Java main method)
* @return the running {@link ApplicationContext}
*/
public static ConfigurableApplicationContext run(Object[] sources, String[] args) {
return new SpringApplication(sources).run(args);
public static ConfigurableApplicationContext run(Object[] primarySources,
String[] args) {
return new SpringApplication(primarySources).run(args);
}
/**

4
spring-boot/src/test/java/org/springframework/boot/SpringApplicationTests.java
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@ -580,8 +580,8 @@ public class SpringApplicationTests {
application.setWebApplicationType(WebApplicationType.NONE);
application.setUseMockLoader(true);
this.context = application.run();
Set<Object> initialSources = application.getSources();
assertThat(initialSources.toArray()).isEqualTo(sources);
Set<Object> allSources = application.getAllSources();
assertThat(allSources.toArray()).isEqualTo(sources);
}
@Test

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