org.openmrs.calculation.CalculationRegistrationValidator.java Source code

Introduction

Here is the source code for org.openmrs.calculation.CalculationRegistrationValidator.java

Source

/**
 * 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.calculation;

import org.apache.commons.lang.StringUtils;
import org.openmrs.annotation.Handler;
import org.openmrs.api.context.Context;
import org.openmrs.calculation.api.CalculationRegistrationService;
import org.openmrs.util.OpenmrsUtil;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

/**
 * Validator for {@link CalculationRegistration}
 */
@Handler(supports = { CalculationRegistration.class }, order = 50)
public class CalculationRegistrationValidator implements Validator {

    /**
     * @see org.springframework.validation.Validator#supports(java.lang.Class)
     */
    @SuppressWarnings("rawtypes")
    public boolean supports(Class c) {
        return CalculationRegistration.class.isAssignableFrom(c);
    }

    /**
     * @see org.springframework.validation.Validator#validate(java.lang.Object, org.springframework.validation.Errors)
     * @should fail if token registration name is not unique amongst all tokens
     * @should fail if token registration name is empty or whitespace
     * @should fail if token registration provider class name is empty or whitespace
     * @should fail if token registration calculation name is empty or whitespace
     * @should fail if token registration does not represent a valid calculation
     * @should pass valid token registration
     * @should pass existing token registration
     */
    public void validate(Object obj, Errors errors) {
        CalculationRegistration target = (CalculationRegistration) obj;
        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "token", "error.null");
        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "providerClassName", "error.null");
        ValidationUtils.rejectIfEmptyOrWhitespace(errors, "calculationName", "error.null");

        /* we need to check if this registration token has unique name amongst all registered tokens for each provider */
        if (StringUtils.isNotBlank(target.getToken())) {
            CalculationRegistrationService tokenService = Context.getService(CalculationRegistrationService.class);
            CalculationRegistration possibleDuplicate = tokenService
                    .getCalculationRegistrationByToken(target.getToken());
            if (possibleDuplicate != null
                    && !OpenmrsUtil.nullSafeEquals(possibleDuplicate.getId(), target.getId())) {
                errors.rejectValue("token", "calculation.CalculationRegistration.error.nonUniqueTokenName");
            }
        }
        try {
            CalculationUtil.getCalculationForCalculationRegistration(target);
        } catch (Exception e) {
            errors.reject(e.getMessage());
        }
    }

}