Some steps towards mergin boot-java and boot-properties LS

- Refactor towards more composable LanguageServers
- disable fatjar support on boot-java and boot-properties

headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/SimpleLanguageServer.java

@@ -76,7 +76,7 @@ import reactor.core.scheduler.Schedulers;
  * here so we can try to keep the subclass itself more 'clutter free' and focus on
  * what its really doing and not the 'wiring and plumbing'.
  */
-public abstract class SimpleLanguageServer implements Sts4LanguageServer, LanguageClientAware, ServiceNotificationsClient, WorkspaceFoldersProposedService {
+public class SimpleLanguageServer implements Sts4LanguageServer, LanguageClientAware, ServiceNotificationsClient, WorkspaceFoldersProposedService, SimpleLanguageServerWrapper {
 
 	private static final Scheduler RECONCILER_SCHEDULER = Schedulers.newSingle("Reconciler");
 
@@ -116,7 +116,7 @@ public abstract class SimpleLanguageServer implements Sts4LanguageServer, Langua
 		this.client = (STS4LanguageClient) _client;
 	}
 
-	protected VscodeCompletionEngineAdapter createCompletionEngineAdapter(SimpleLanguageServer server, ICompletionEngine engine) {
+	public VscodeCompletionEngineAdapter createCompletionEngineAdapter(SimpleLanguageServer server, ICompletionEngine engine) {
 		return new VscodeCompletionEngineAdapter(server, engine, completionResolver);
 	}
 
@@ -406,7 +406,7 @@ public abstract class SimpleLanguageServer implements Sts4LanguageServer, Langua
 	 * Convenience method. Subclasses can call this to use a {@link IReconcileEngine} ported
 	 * from old STS codebase to validate a given {@link TextDocument} and publish Diagnostics.
 	 */
-	protected void validateWith(TextDocumentIdentifier docId, IReconcileEngine engine) {
+	public void validateWith(TextDocumentIdentifier docId, IReconcileEngine engine) {
 		CompletableFuture<Void> reconcileSession = this.busyReconcile = new CompletableFuture<Void>();
 //		Log.debug("Reconciling BUSY");
 
@@ -547,4 +547,9 @@ public abstract class SimpleLanguageServer implements Sts4LanguageServer, Langua
 		return diagnosticService;
 	}
 
+	@Override
+	public SimpleLanguageServer getServer() {
+		return this;
+	}
+
 }

headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/SimpleLanguageServerWrapper.java

@@ -0,0 +1,17 @@
+/*******************************************************************************
+ * Copyright (c) 2018 Pivotal, Inc.
+ * 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
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.ide.vscode.commons.languageserver.util;
+
+public interface SimpleLanguageServerWrapper {
+
+	SimpleLanguageServer getServer();
+
+}