fix: Can emit group vertex and group event

com.microsoft.java.lsif.core/src/com/microsoft/java/lsif/core/internal/indexer/Indexer.java

@@ -48,8 +48,10 @@
 import com.microsoft.java.lsif.core.internal.emitter.LsifEmitter;
 import com.microsoft.java.lsif.core.internal.protocol.Document;
 import com.microsoft.java.lsif.core.internal.protocol.Event;
+import com.microsoft.java.lsif.core.internal.protocol.Group;
 import com.microsoft.java.lsif.core.internal.protocol.PackageInformation;
 import com.microsoft.java.lsif.core.internal.protocol.Project;
+import com.microsoft.java.lsif.core.internal.protocol.Group.ConflictResolution;
 import com.microsoft.java.lsif.core.internal.visitors.DiagnosticVisitor;
 import com.microsoft.java.lsif.core.internal.visitors.DocumentVisitor;
 import com.microsoft.java.lsif.core.internal.visitors.LsifVisitor;
@@ -114,7 +116,10 @@ private void buildIndex(IPath path, IProgressMonitor monitor, LsifService lsif)
 				// ProjectConnection.getModel
 				JavaLanguageServerPlugin.logException(e.getMessage(), e);
 			}
-
+			Group groupVertex = lsif.getVertexBuilder().group(ResourceUtils.fixURI(path.toFile().toURI()), ConflictResolution.TAKEDB, javaProject.getElementName(), ResourceUtils.fixURI(path.toFile().toURI()));
+			LsifEmitter.getInstance().emit(groupVertex);
+			LsifEmitter.getInstance().emit(
+					lsif.getVertexBuilder().event(Event.EventScope.Group, Event.EventKind.BEGIN, groupVertex.getId()));
 			Project projVertex = lsif.getVertexBuilder().project(javaProject.getElementName());
 			LsifEmitter.getInstance().emit(projVertex);
 			LsifEmitter.getInstance().emit(
@@ -127,6 +132,8 @@ private void buildIndex(IPath path, IProgressMonitor monitor, LsifService lsif)
 			VisitorUtils.endAllDocument(lsif);
 			LsifEmitter.getInstance().emit(
 					lsif.getVertexBuilder().event(Event.EventScope.Project, Event.EventKind.END, projVertex.getId()));
+			LsifEmitter.getInstance().emit(
+					lsif.getVertexBuilder().event(Event.EventScope.Group, Event.EventKind.END, groupVertex.getId()));
 		}
 
 		threadPool.shutdown();

com.microsoft.java.lsif.core/src/com/microsoft/java/lsif/core/internal/indexer/VertexBuilder.java

@@ -18,6 +18,7 @@
 import com.microsoft.java.lsif.core.internal.protocol.Document;
 import com.microsoft.java.lsif.core.internal.protocol.DocumentSymbolResult;
 import com.microsoft.java.lsif.core.internal.protocol.Event;
+import com.microsoft.java.lsif.core.internal.protocol.Group;
 import com.microsoft.java.lsif.core.internal.protocol.HoverResult;
 import com.microsoft.java.lsif.core.internal.protocol.ImplementationResult;
 import com.microsoft.java.lsif.core.internal.protocol.MetaData;
@@ -30,6 +31,7 @@
 import com.microsoft.java.lsif.core.internal.protocol.ReferenceResult;
 import com.microsoft.java.lsif.core.internal.protocol.ResultSet;
 import com.microsoft.java.lsif.core.internal.protocol.TypeDefinitionResult;
+import com.microsoft.java.lsif.core.internal.protocol.Group.ConflictResolution;
 
 public final class VertexBuilder {
 
@@ -47,6 +49,10 @@ public Event event(String scope, String kind, String data) {
 		return new Event(generator.next(), scope, kind, data);
 	}
 
+	public Group group(String uri, ConflictResolution resolution, String name, String rootUri) {
+		return new Group(generator.next(), uri, resolution, name, rootUri);
+	}
+
 	public Project project(String name) {
 		return new Project(generator.next(), name);
 	}

com.microsoft.java.lsif.core/src/com/microsoft/java/lsif/core/internal/protocol/Event.java

@@ -34,6 +34,7 @@ public String getData() {
 	}
 
 	public static class EventScope {
+		public static final String Group = "group";
 		public static final String Project = "project";
 		public static final String DOCUMENT = "document";
 	}

com.microsoft.java.lsif.core/src/com/microsoft/java/lsif/core/internal/protocol/Group.java

@@ -0,0 +1,41 @@
+/* --------------------------------------------------------------------------------------------
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for license information.
+ * ------------------------------------------------------------------------------------------ */
+
+package com.microsoft.java.lsif.core.internal.protocol;
+
+public class Group extends Vertex {
+
+	public enum ConflictResolution {
+		TAKEDUMP("takeDump"), TAKEDB("takeDB");
+
+		private final String resolution;
+
+		private ConflictResolution(String resolution) {
+			this.resolution = resolution;
+		}
+
+		@Override
+		public String toString() {
+			return this.resolution;
+		}
+	}
+
+	private String uri;
+
+	private String resolution;
+
+	private String name;
+
+	private String rootUri;
+
+	public Group(String id, String uri, ConflictResolution resolution, String name, String rootUri) {
+		super(id, Vertex.GROUP);
+		this.uri = uri;
+		this.resolution = resolution.toString();
+		this.name = name;
+		this.rootUri = rootUri;
+	}
+
+}

com.microsoft.java.lsif.core/src/com/microsoft/java/lsif/core/internal/protocol/Vertex.java

@@ -45,6 +45,8 @@ public class Vertex extends Element {
 
 	public static final String IMPLEMENTATIONRESULT = "implementationResult";
 
+	public static final String GROUP = "group";
+
 	public static final String MONIKER = "moniker";
 
 	public static final String PACKAGEINFORMATION = "packageInformation";