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}