001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements.  See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership.  The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the
007     * "License"); you may not use this file except in compliance
008     * with the License.  You may obtain a copy of the License at
009     * 
010     *      http://www.apache.org/licenses/LICENSE-2.0
011     * 
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    package org.apache.oozie.workflow.lite;
019    
020    
021    import org.apache.oozie.util.ParamChecker;
022    
023    import java.util.Arrays;
024    
025    /**
026     * Workflow lite start node definition.
027     */
028    public class StartNodeDef extends ControlNodeDef {
029    
030        /**
031         * Reserved name fo the start node. <p/> It is an invalid token, it will never match an application node name.
032         */
033        public static final String START = ":start:";
034    
035        /**
036         * Default constructor.
037         */
038        public StartNodeDef() {
039        }
040    
041        /**
042         * Create a start node definition.
043         *
044         * @param klass control node handler class.
045         * @param transitionTo transition on workflow start.
046         */
047        public StartNodeDef(Class<? extends ControlNodeHandler> klass, String transitionTo) {
048            super(START, "", klass, Arrays.asList(ParamChecker.notEmpty(transitionTo, "transitionTo")));
049        }
050    
051    }