Add LSP resource operation support.

Signed-off-by: Yaohai Zheng <[email protected]>

org.eclipse.lsp4j/src/main/java/org/eclipse/lsp4j/FailureHandlingKind.java

@@ -0,0 +1,48 @@
+/******************************************************************************
+ * Copyright (c) 2018 Microsoft Corporation and others.
+ * 
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0,
+ * or the Eclipse Distribution License v. 1.0 which is available at
+ * http://www.eclipse.org/org/documents/edl-v10.php.
+ * 
+ * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
+ ******************************************************************************/
+
+package org.eclipse.lsp4j;
+
+/**
+ * The kind of failure handling supported by the client.
+ */
+public final class FailureHandlingKind {
+
+	private FailureHandlingKind() {
+	}
+
+	/**
+	 * Applying the workspace change is simply aborted if one of the changes
+	 * provided fails. All operations executed before the failing operation stay
+	 * executed.
+	 */
+	public static final String Abort = "abort";
+
+	/**
+	 * All operations are executed transactional. That means they either all succeed
+	 * or no changes at all are applied to the workspace.
+	 */
+	public static final String Transactional = "transactional";
+
+	/**
+	 * If the workspace edit contains only textual file changes they are executed
+	 * transactional. If resource changes (create, rename or delete file) are part
+	 * of the change the failure handling strategy is abort.
+	 */
+	public static final String TextOnlyTransactional = "textOnlyTransactional";
+
+	/**
+	 * The client tries to undo the operations already executed. But there is no
+	 * guaruntee that this is succeeding.
+	 */
+	public static final String Undo = "undo";
+}