/**
 * Copyright (c) 2010-2015, openHAB.org and others.
 *
 * 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
 */
package org.openhab.core.types;

/**
 * There are situations when item states do not have any defined value.
 * This might be because they have not been initialized yet (never
 * received an state update so far) or because their state is ambiguous
 * (e.g. a dimmed light that is treated as a switch (ON/OFF) will have
 * an undefined state if it is dimmed to 50%).
 * 
 * @author Kai Kreuzer
 * @since 0.1.0
 *
 */
public enum UnDefType implements PrimitiveType, State {
	UNDEF, NULL;
	
	public String toString() {
		switch(this) {
			case UNDEF: return "Undefined";
			case NULL:  return "Uninitialized";
		}
		return "";
	}
	
	public String format(String pattern) {
		return String.format(pattern, this.toString());
	}

}

/**
 * Copyright (c) 2010-2015, openHAB.org and others.
 *
 * 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
 */
package org.openhab.core.types;

/**
 * There are situations when item states do not have any defined value.
 * This might be because they have not been initialized yet (never
 * received an state update so far) or because their state is ambiguous
 * (e.g. a dimmed light that is treated as a switch (ON/OFF) will have
 * an undefined state if it is dimmed to 50%).
 * 
 * @author Kai Kreuzer
 * @since 0.1.0
 *
 */
public enum UnDefType implements PrimitiveType, State {
	UNDEF, NULL;
	
	public String format(String pattern) {
		return String.format(pattern, this.toString());
	}

}

--- 
+++ 
@@ -22,6 +22,14 @@
 public enum UnDefType implements PrimitiveType, State {
 	UNDEF, NULL;
 	
+	public String toString() {
+		switch(this) {
+			case UNDEF: return "Undefined";
+			case NULL:  return "Uninitialized";
+		}
+		return "";
+	}
+	
 	public String format(String pattern) {
 		return String.format(pattern, this.toString());
 	}
Revert "remove the special toString() in order to sync with ESH"
