GH-1499: added demo code to find config beans with imports for a certain type

Author: martinlippert

Diff for: headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/java/Annotations.java

@@ -27,6 +27,8 @@ public class Annotations {
 
 	public static final String COMPONENT = "org.springframework.stereotype.Component";
 	public static final String CONFIGURATION = "org.springframework.context.annotation.Configuration";
+	public static final String IMPORT = "org.springframework.context.annotation.Import";
+
 	public static final String CONTROLLER = "org.springframework.stereotype.Controller";
 
 	public static final String CONFIGURATION_PROPERTIES = "org.springframework.boot.context.properties.ConfigurationProperties";
@@ -113,5 +115,4 @@ public class Annotations {
 	        "org.aspectj.lang.annotation.DeclareParents", "DeclareParents"
 	);
 
-
 }

Diff for: headless-services/spring-boot-language-server/src/test/java/org/springframework/ide/vscode/boot/index/test/SpringIndexerBeanRegistrarTest.java

@@ -10,6 +10,7 @@
  *******************************************************************************/
 package org.springframework.ide.vscode.boot.index.test;
 
+import static org.junit.Assert.assertTrue;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import java.io.File;
@@ -28,7 +29,9 @@
 import org.springframework.ide.vscode.boot.bootiful.BootLanguageServerTest;
 import org.springframework.ide.vscode.boot.bootiful.SymbolProviderTestConf;
 import org.springframework.ide.vscode.boot.index.SpringMetamodelIndex;
+import org.springframework.ide.vscode.boot.java.Annotations;
 import org.springframework.ide.vscode.commons.languageserver.java.JavaProjectFinder;
+import org.springframework.ide.vscode.commons.protocol.spring.AnnotationMetadata;
 import org.springframework.ide.vscode.commons.protocol.spring.Bean;
 import org.springframework.ide.vscode.commons.protocol.spring.SpringIndexElement;
 import org.springframework.ide.vscode.project.harness.BootLanguageServerHarness;
@@ -94,5 +97,21 @@ void testSimpleBeanRegistration() throws Exception {
         assertEquals("baz", baz.getName());
         assertEquals("com.example.Baz", baz.getType());
     }
+    
+    @Test
+    void testNonRegisteredBeanRegistrar() throws Exception {
+    	
+    	Bean[] beans = springIndex.getBeansOfProject("test-framework-7-indexing");
+    	String registrarName = "com.example.MyBeanRegistrar";
+    	
+    	boolean anyMatch = Arrays.stream(beans)
+    		.filter(bean -> bean.isConfiguration()) // look into beans with @Configuration only
+    		.flatMap(bean -> Arrays.stream(bean.getAnnotations())) // look into annotations on this bean definition
+    		.filter(annotation -> Annotations.IMPORT.equals(annotation.getAnnotationType())) // look into @Import annotations only
+    		.flatMap(annotation -> Arrays.stream(annotation.getAttributes().get("value"))) // look into the attribute values of "value" attribute
+    		.anyMatch(annotationValue -> annotationValue.getName().equals(registrarName));
+    	
+    	assertTrue(anyMatch);
+    }
 
 }

Diff for: headless-services/spring-boot-language-server/src/test/resources/test-projects/test-framework-7-indexing/src/main/java/com/example/BeanClass.java

@@ -0,0 +1,9 @@
+package com.example;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+@Configuration
+@Import(MyBeanRegistrar.class)
+public class ConfigImportsBeanRegistrar {
+}

Diff for: headless-services/spring-boot-language-server/src/test/resources/test-projects/test-framework-7-indexing/src/main/java/com/example/ConfigImportsBeanRegistrar.java

@@ -6,19 +6,15 @@
 
 public class MyBeanRegistrar implements BeanRegistrar {
 
-        @Override
-        public void register(BeanRegistry registry, Environment env) {
-                registry.registerBean(FooFoo.class);
-                registry.registerBean("foo", Foo.class);
-                registry.registerBean("bar", Bar.class, spec -> spec
-                                .prototype()
-                                .lazyInit()
-                                .description("Custom description")
-                                .supplier(context -> new Bar(context.bean(Foo.class))));
-                if (env.matchesProfiles("baz")) {
-                        registry.registerBean(Baz.class, spec -> spec
-                                        .supplier(context -> new Baz("Hello World!")));
-                }
-        }
+	@Override
+	public void register(BeanRegistry registry, Environment env) {
+		registry.registerBean(FooFoo.class);
+		registry.registerBean("foo", Foo.class);
+		registry.registerBean("bar", Bar.class, spec -> spec.prototype().lazyInit().description("Custom description")
+				.supplier(context -> new Bar(context.bean(Foo.class))));
+		if (env.matchesProfiles("baz")) {
+			registry.registerBean(Baz.class, spec -> spec.supplier(context -> new Baz("Hello World!")));
+		}
+	}
 
 }

Diff for: headless-services/spring-boot-language-server/src/test/resources/test-projects/test-framework-7-indexing/src/main/java/com/example/MyBeanRegistrar.java

@@ -0,0 +1,14 @@
+package com.example;
+
+import org.springframework.beans.factory.BeanRegistrar;
+import org.springframework.beans.factory.BeanRegistry;
+import org.springframework.core.env.Environment;
+
+public class NotRegisterredBeanRegistrar implements BeanRegistrar {
+
+	@Override
+	public void register(BeanRegistry registry, Environment env) {
+		registry.registerBean("not-registered-anyway", FooFoo.class);
+	}
+
+}