RequireNameValidator.java

/**
 * 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.validator;

import java.beans.PropertyDescriptor;

import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

/**
 * Validates objects and requires that "name" be filled in. Used by other validators so that they
 * don't have to check the name every time.
 * 
 * @since 1.5
 */
public class RequireNameValidator implements Validator {
	
	/**
	 * @see org.springframework.validation.Validator#supports(java.lang.Class)
	 */
	@SuppressWarnings("unchecked")
	public boolean supports(Class clz) {
		try {
			PropertyDescriptor pd = new PropertyDescriptor("name", clz);
			if (pd.getReadMethod() == null)
				return false;
			if (pd.getWriteMethod() == null)
				return false;
			return true;
		}
		catch (Exception ex) {}
		return false;
	}
	
	/**
	 * @see org.springframework.validation.Validator#validate(java.lang.Object,
	 *      org.springframework.validation.Errors)
	 * @should fail validation if name is null or empty or whitespace
	 * @should pass validation if name has proper value
	 */
	public void validate(Object o, Errors errors) {
		ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", "error.name");
	}
	
}