/*
 *
 *   Copyright 2006 The Apache Software Foundation.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.apache.commons.scxml.semantics;

/**
 * Errors reported by the default SCXMLSemantics implementation.
 *
 */
public class ErrorConstants {

    /**
     * Missing initial state for a composite state or for the scxml root.
     *
     * @see org.apache.commons.scxml.model.SCXML#getInitialState()
     * @see org.apache.commons.scxml.model.State#getInitial()
     */
    public static String NO_INITIAL = "NO_INITIAL";

    /**
     * An initial state for a composite state whose Transition does not.
     * Map to a descendant of the composite state.
     *
     */
    public static String ILLEGAL_INITIAL = "ILLEGAL_INITIAL";

    /**
     * Unknown action - unsupported executable content. List of supported.
     * actions: assign, cancel, elseif, else, if, log, send, var
     */
    public static String UNKNOWN_ACTION = "UNKNOWN_ACTION";

    /**
     * Illegal state machine configuration.
     * Either a parallel exists which does not have all its AND sub-states
     * active or there are multiple enabled OR states on the same level.
     */
    public static String ILLEGAL_CONFIG = "ILLEGAL_CONFIG";

    /**
     * Non-deterministic situation has occured - there are more than
     * one enabled transitions in conflict.
     */
    public static String NON_DETERMINISTIC = "NON_DETERMINISTIC";

    /**
     * A variable referred to by assign name attribute is undefined.
     */
    public static String UNDEFINED_VARIABLE = "UNDEFINED_VARIABLE";

    /**
     * An expression language error.
     */
    public static String EXPRESSION_ERROR = "EXPRESSION_ERROR";

    //---------------------------------------------- STATIC CONSTANTS ONLY

    /**
     * Discourage instantiation.
     */
    private ErrorConstants() {
        super(); // humor checkstyle
    }

}

@@ -1013,32 +1013,38 @@
   public static 
+final 
 String NO_INITIA
@@ -1053,32 +1053,32 @@
 = %22NO_INITIAL%22;%0A
-
 %0A    /**%0A     * 
@@ -1219,32 +1219,38 @@
   public static 
+final 
 String ILLEGAL_I
@@ -1444,32 +1444,38 @@
   public static 
+final 
 String UNKNOWN_A
@@ -1723,24 +1723,30 @@
 blic static 
+final 
 String ILLEG
@@ -1919,24 +1919,30 @@
 blic static 
+final 
 String NON_D
@@ -2077,24 +2077,30 @@
 blic static 
+final 
 String UNDEF
@@ -2183,32 +2183,32 @@
  error.%0A     */%0A
-
     public stati
@@ -2209,16 +2209,22 @@
  static 
+final 
 String E

Should be final.