Java tutorial
/** * The contents of this file are subject to the OpenMRS Public License * Version 1.0 (the "License"); you may not use this file except in * compliance with the License. You may obtain a copy of the License at * http://license.openmrs.org * * Software distributed under the License is distributed on an "AS IS" * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the * License for the specific language governing rights and limitations * under the License. * * Copyright (C) OpenMRS, LLC. All Rights Reserved. */ package org.openmrs.module.jsslab.validator; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.openmrs.module.jsslab.db.LabPrecondition; import org.openmrs.annotation.Handler; import org.springframework.validation.Errors; import org.springframework.validation.ValidationUtils; import org.springframework.validation.Validator; /** * Validates the {@link LabPrecondition} class. * * @since 1.5 */ @Handler(supports = { LabPrecondition.class }, order = 50) public class LabPreconditionValidator implements Validator { /** Log for this class and subclasses */ protected final Log log = LogFactory.getLog(getClass()); /** * Determines if the command object being submitted is a valid type * * @see org.springframework.validation.Validator#supports(java.lang.Class) */ @SuppressWarnings("rawtypes") public boolean supports(Class c) { return LabPrecondition.class.isAssignableFrom(c); } /** * Checks the form object for any inconsistencies/errors * * @see org.springframework.validation.Validator#validate(java.lang.Object, * org.springframework.validation.Errors) * @should fail validation if required fields are missing */ public void validate(Object obj, Errors errors) { LabPrecondition precondition = (LabPrecondition) obj; if (precondition == null) { errors.rejectValue("precondition", "jsslab.validation.error.null"); } // for the following elements LabPrecondition.hbm.xml says: not-null="true" ValidationUtils.rejectIfEmpty(errors, "testPanel", "jsslab.validation.NullTestPanel"); ValidationUtils.rejectIfEmpty(errors, "preconditionQuestionConcept", "jsslab.validation.NullConcept"); ValidationUtils.rejectIfEmpty(errors, "preconditionAnswerConcept", "jsslab.validation.NullConcept"); ValidationUtils.rejectIfEmpty(errors, "creator", "jsslab.validation.NullField"); ValidationUtils.rejectIfEmpty(errors, "dateCreated", "jsslab.validation.NullField"); ValidationUtils.rejectIfEmpty(errors, "voided", "jsslab.validation.NullField"); } }