001/* 002 * Copyright 2011-2018 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; 017 018import java.util.List; 019 020import org.springframework.batch.core.JobParameters; 021import org.springframework.batch.core.JobParametersInvalidException; 022import org.springframework.batch.core.JobParametersValidator; 023import org.springframework.beans.factory.InitializingBean; 024import org.springframework.lang.Nullable; 025import org.springframework.util.Assert; 026 027/** 028 * Composite {@link JobParametersValidator} that passes the job parameters through a sequence of 029 * injected <code>JobParametersValidator</code>s 030 * 031 * @author Morten Andersen-Gott 032 * @author Mahmoud Ben Hassine 033 * 034 */ 035public class CompositeJobParametersValidator implements JobParametersValidator, InitializingBean { 036 037 private List<JobParametersValidator> validators; 038 039 /** 040 * Validates the JobParameters according to the injected JobParameterValidators 041 * Validation stops and exception is thrown on first validation error 042 * 043 * @param parameters some {@link JobParameters} 044 * @throws JobParametersInvalidException if the parameters are invalid 045 */ 046 @Override 047 public void validate(@Nullable JobParameters parameters) throws JobParametersInvalidException { 048 for (JobParametersValidator validator : validators) { 049 validator.validate(parameters); 050 } 051 } 052 053 /** 054 * Public setter for the validators 055 * @param validators list of validators to be used by the CompositeJobParametersValidator. 056 */ 057 public void setValidators(List<JobParametersValidator> validators) { 058 this.validators = validators; 059 } 060 061 @Override 062 public void afterPropertiesSet() throws Exception { 063 Assert.notNull(validators, "The 'validators' may not be null"); 064 Assert.notEmpty(validators, "The 'validators' may not be empty"); 065 } 066 067 068 069}