001/*
002 * Copyright 2009-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.springframework.batch.core.step;
017
018import java.util.Collection;
019
020import org.springframework.batch.core.Step;
021import org.springframework.lang.Nullable;
022
023/**
024 * Interface for locating a {@link Step} instance by name.
025 * 
026 * @author Dave Syer
027 * @author Mahmoud Ben Hassine
028 *
029 */
030public interface StepLocator {
031        
032        Collection<String> getStepNames();
033
034        @Nullable
035        Step getStep(String stepName);
036
037}