GH-1254: support for <go to definition> for bean names in @DependsOn annotation

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/app/BootJavaCompletionEngineConfigurer.java

@@ -101,8 +101,10 @@ public class BootJavaCompletionEngineConfigurer {
 			@Qualifier("adHocProperties") ProjectBasedPropertyIndexProvider adHocProperties,
 			JavaSnippetManager snippetManager, 
 			CompilationUnitCache cuCache) {
+		
 		SpringPropertyIndexProvider indexProvider = params.indexProvider;
 		JavaProjectFinder javaProjectFinder = params.projectFinder;
+		
 		Map<String, CompletionProvider> providers = new HashMap<>();
 		
 		providers.put(Annotations.SCOPE, new ScopeCompletionProcessor());

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/app/BootLanguageServerBootApp.java

@@ -45,6 +45,7 @@ import org.springframework.ide.vscode.boot.index.cache.IndexCache;
 import org.springframework.ide.vscode.boot.index.cache.IndexCacheOnDisc;
 import org.springframework.ide.vscode.boot.index.cache.IndexCacheVoid;
 import org.springframework.ide.vscode.boot.java.JavaDefinitionHandler;
+import org.springframework.ide.vscode.boot.java.beans.DependsOnDefinitionProvider;
 import org.springframework.ide.vscode.boot.java.handlers.BootJavaCodeActionProvider;
 import org.springframework.ide.vscode.boot.java.handlers.BootJavaReconcileEngine;
 import org.springframework.ide.vscode.boot.java.handlers.JavaCodeActionHandler;
@@ -391,8 +392,8 @@ public class BootLanguageServerBootApp {
 	}
 	
 	@Bean
-	JavaDefinitionHandler javaDefinitionHandler(CompilationUnitCache cuCache, JavaProjectFinder projectFinder) {
+	JavaDefinitionHandler javaDefinitionHandler(CompilationUnitCache cuCache, JavaProjectFinder projectFinder, SpringMetamodelIndex springIndex) {
-		return new JavaDefinitionHandler(cuCache, projectFinder, List.of(new PropertyValueAnnotationDefProvider()));
+		return new JavaDefinitionHandler(cuCache, projectFinder, List.of(new PropertyValueAnnotationDefProvider(), new DependsOnDefinitionProvider(springIndex)));
 	}
 	
 	@Bean

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

@@ -72,5 +72,6 @@ public class Annotations {
 	
 	public static final String VALUE = "org.springframework.beans.factory.annotation.Value";
 	public static final String SCOPE = "org.springframework.context.annotation.Scope";
+	public static final String DEPENDS_ON = "org.springframework.context.annotation.DependsOn";
 
 }

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/java/beans/DependsOnDefinitionProvider.java

@@ -0,0 +1,75 @@
+/*******************************************************************************
+ * Copyright (c) 2024 Broadcom
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Broadcom - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.java.beans;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.eclipse.jdt.core.dom.ASTNode;
+import org.eclipse.jdt.core.dom.Annotation;
+import org.eclipse.jdt.core.dom.CompilationUnit;
+import org.eclipse.jdt.core.dom.IAnnotationBinding;
+import org.eclipse.jdt.core.dom.StringLiteral;
+import org.eclipse.lsp4j.LocationLink;
+import org.eclipse.lsp4j.jsonrpc.CancelChecker;
+import org.springframework.ide.vscode.boot.index.SpringMetamodelIndex;
+import org.springframework.ide.vscode.boot.java.Annotations;
+import org.springframework.ide.vscode.boot.java.IJavaDefinitionProvider;
+import org.springframework.ide.vscode.boot.java.utils.ASTUtils;
+import org.springframework.ide.vscode.commons.java.IJavaProject;
+import org.springframework.ide.vscode.commons.protocol.spring.Bean;
+
+/**
+ * @author Martin Lippert
+ */
+public class DependsOnDefinitionProvider implements IJavaDefinitionProvider {
+	
+	private final SpringMetamodelIndex springIndex;
+	
+	public DependsOnDefinitionProvider(SpringMetamodelIndex springIndex) {
+		this.springIndex = springIndex;
+	}
+
+	@Override
+	public List<LocationLink> getDefinitions(CancelChecker cancelToken, IJavaProject project, CompilationUnit cu, ASTNode n) {
+		if (n instanceof StringLiteral) {
+			StringLiteral valueNode = (StringLiteral) n;
+			
+			ASTNode parent = ASTUtils.getNearestAnnotationParent(valueNode);
+			
+			if (parent != null && parent instanceof Annotation) {
+				Annotation a = (Annotation) parent;
+				IAnnotationBinding binding = a.resolveAnnotationBinding();
+				if (binding != null && binding.getAnnotationType() != null && Annotations.DEPENDS_ON.equals(binding.getAnnotationType().getQualifiedName())) {
+					String beanName = valueNode.getLiteralValue();
+					
+					if (beanName != null && beanName.length() > 0) {
+						return findBeansWithName(project, beanName);
+					}
+				}
+			}
+		}
+		return Collections.emptyList();
+	}
+
+	private List<LocationLink> findBeansWithName(IJavaProject project, String beanName) {
+		Bean[] beans = this.springIndex.getBeansWithName(project.getElementName(), beanName);
+		
+		return Arrays.stream(beans)
+				.map(bean -> {
+					return new LocationLink(bean.getLocation().getUri(), bean.getLocation().getRange(), bean.getLocation().getRange());
+				})
+				.collect(Collectors.toList());
+	}
+
+}

headless-services/spring-boot-language-server/src/main/java/org/springframework/ide/vscode/boot/java/utils/ASTUtils.java

@@ -454,6 +454,11 @@ public class ASTUtils {
 		return result.size() > 0 ? result.toArray(new InjectionPoint[result.size()]) : DefaultValues.EMPTY_INJECTION_POINTS;
 	}
 	
-
+	public static ASTNode getNearestAnnotationParent(ASTNode node) {
+		while (node != null && !(node instanceof Annotation)) {
+			node = node.getParent();
+		}
+		return node;
+	}
 
 }

headless-services/spring-boot-language-server/src/test/java/org/springframework/ide/vscode/boot/java/beans/test/DependsOnDefinitionProviderTest.java

@@ -0,0 +1,159 @@
+/*******************************************************************************
+ * Copyright (c) 2024 Broadcom
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Broadcom - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.boot.java.beans.test;
+
+import static org.junit.Assert.assertEquals;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.TimeUnit;
+
+import org.eclipse.lsp4j.Location;
+import org.eclipse.lsp4j.LocationLink;
+import org.eclipse.lsp4j.Position;
+import org.eclipse.lsp4j.Range;
+import org.eclipse.lsp4j.TextDocumentIdentifier;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Import;
+import org.springframework.ide.vscode.boot.app.SpringSymbolIndex;
+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.commons.java.IJavaProject;
+import org.springframework.ide.vscode.commons.languageserver.java.JavaProjectFinder;
+import org.springframework.ide.vscode.commons.protocol.spring.Bean;
+import org.springframework.ide.vscode.commons.util.text.LanguageId;
+import org.springframework.ide.vscode.languageserver.testharness.Editor;
+import org.springframework.ide.vscode.project.harness.BootLanguageServerHarness;
+import org.springframework.ide.vscode.project.harness.ProjectsHarness;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+/**
+ * @author Martin Lippert
+ */
+@ExtendWith(SpringExtension.class)
+@BootLanguageServerTest
+@Import(SymbolProviderTestConf.class)
+public class DependsOnDefinitionProviderTest {
+
+	@Autowired private BootLanguageServerHarness harness;
+	@Autowired private JavaProjectFinder projectFinder;
+	@Autowired private SpringMetamodelIndex springIndex;
+	@Autowired private SpringSymbolIndex indexer;
+
+	private File directory;
+	private IJavaProject project;
+
+	@BeforeEach
+	public void setup() throws Exception {
+		harness.intialize(null);
+
+		directory = new File(ProjectsHarness.class.getResource("/test-projects/test-spring-indexing/").toURI());
+
+		String projectDir = directory.toURI().toString();
+		project = projectFinder.find(new TextDocumentIdentifier(projectDir)).get();
+
+		CompletableFuture<Void> initProject = indexer.waitOperation();
+		initProject.get(5, TimeUnit.SECONDS);
+	}
+	
+	@Test
+	public void testSingleDependsOnBeanDefinitionLink() throws Exception {
+        String tempJavaDocUri = directory.toPath().resolve("src/main/java/org/test/TempClass.java").toUri().toString();
+
+        Editor editor = harness.newEditor(LanguageId.JAVA, """
+				package org.test;
+
+				import org.springframework.context.annotation.DependsOn;
+
+				@Component
+				@DependsOn("bean1")
+				public class TestDependsOnClass {
+				}""", tempJavaDocUri);
+		
+        String expectedDefinitionUri = directory.toPath().resolve("src/main/java/org/test/MainClass.java").toUri().toString();
+        
+        Bean[] beans = springIndex.getBeansWithName(project.getElementName(), "bean1");
+        assertEquals(1, beans.length);
+
+		LocationLink expectedLocation = new LocationLink(expectedDefinitionUri,
+				beans[0].getLocation().getRange(), beans[0].getLocation().getRange(),
+				null);
+
+		editor.assertLinkTargets("bean1", List.of(expectedLocation));
+	}
+
+	@Test
+	public void testMultipleDependsOnBeanDefinitionLink() throws Exception {
+        String tempJavaDocUri = directory.toPath().resolve("src/main/java/org/test/TempClass.java").toUri().toString();
+
+        Editor editor = harness.newEditor(LanguageId.JAVA, """
+				package org.test;
+
+				import org.springframework.context.annotation.DependsOn;
+
+				@Component
+				@DependsOn({"bean1", "bean2"})
+				public class TestDependsOnClass {
+				}""", tempJavaDocUri);
+		
+        String expectedDefinitionUri = directory.toPath().resolve("src/main/java/org/test/MainClass.java").toUri().toString();
+        
+        Bean[] beans = springIndex.getBeansWithName(project.getElementName(), "bean1");
+        assertEquals(1, beans.length);
+
+		LocationLink expectedLocation = new LocationLink(expectedDefinitionUri,
+				beans[0].getLocation().getRange(), beans[0].getLocation().getRange(),
+				null);
+
+		editor.assertLinkTargets("bean1", List.of(expectedLocation));
+	}
+
+	@Test
+	public void testDependsOnWithMultipleBeanDefinitionLinks() throws Exception {
+        String tempJavaDocUri = directory.toPath().resolve("src/main/java/org/test/TempClass.java").toUri().toString();
+
+        Editor editor = harness.newEditor(LanguageId.JAVA, """
+				package org.test;
+
+				import org.springframework.context.annotation.DependsOn;
+
+				@Component
+				@DependsOn("bean1")
+				public class TestDependsOnClass {
+				}""", tempJavaDocUri);
+		
+        String expectedDefinitionUri = directory.toPath().resolve("src/main/java/org/test/MainClass.java").toUri().toString();
+        
+        List<Bean> beansOfDoc = new ArrayList<>(List.of(springIndex.getBeansOfDocument(expectedDefinitionUri)));
+        beansOfDoc.add(new Bean("bean1", "type", new Location(expectedDefinitionUri, new Range(new Position(20, 1), new Position(20, 10))), null, null, null));
+        springIndex.updateBeans(project.getElementName(), expectedDefinitionUri, beansOfDoc.toArray(new Bean[0]));
+        
+        Bean[] beans = springIndex.getBeansWithName(project.getElementName(), "bean1");
+        assertEquals(2, beans.length);
+
+		LocationLink expectedLocation1 = new LocationLink(expectedDefinitionUri,
+				beans[0].getLocation().getRange(), beans[0].getLocation().getRange(),
+				null);
+
+		LocationLink expectedLocation2 = new LocationLink(expectedDefinitionUri,
+				beans[1].getLocation().getRange(), beans[1].getLocation().getRange(),
+				null);
+
+		editor.assertLinkTargets("bean1", List.of(expectedLocation1, expectedLocation2));
+	}
+
+}