001/* 002 * Copyright 2006-2018 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.job.flow; 017 018import org.springframework.batch.core.JobExecution; 019import org.springframework.batch.core.StepExecution; 020import org.springframework.lang.Nullable; 021 022/** 023 * Interface allowing for programmatic access to the decision on what the status 024 * of a flow should be. For example, if some condition that's stored in the 025 * database indicates that the job should stop for a manual check, a decider 026 * implementation could check that value to determine the status of the flow. 027 * 028 * @author Dave Syer 029 * @author Mahmoud Ben Hassine 030 * @since 2.0 031 */ 032public interface JobExecutionDecider { 033 034 /** 035 * Strategy for branching an execution based on the state of an ongoing 036 * {@link JobExecution}. The return value will be used as a status to 037 * determine the next step in the job. 038 * 039 * @param jobExecution a job execution 040 * @param stepExecution the latest step execution (may be {@code null}) 041 * @return the exit status code 042 */ 043 FlowExecutionStatus decide(JobExecution jobExecution, @Nullable StepExecution stepExecution); 044 045}