BaseAttributeTypeValidator.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 org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openmrs.api.context.Context;
import org.openmrs.attribute.AttributeType;
import org.openmrs.customdatatype.CustomDatatype;
import org.openmrs.customdatatype.CustomDatatypeHandler;
import org.openmrs.customdatatype.CustomDatatypeUtil;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;
/**
* Abstract class which handles basic validation common to all attribute types
*
* @since 1.9
*/
public abstract class BaseAttributeTypeValidator<T extends AttributeType<?>> implements Validator {
/** Log for this class and subclasses */
protected final Log log = LogFactory.getLog(getClass());
/**
* @see org.springframework.validation.Validator#validate(java.lang.Object, org.springframework.validation.Errors)
* @should require name
* @should require minOccurs
* @should not allow maxOccurs less than 1
* @should not allow maxOccurs less than minOccurs
* @should require datatypeClassname
*/
@Override
public void validate(Object target, Errors errors) {
@SuppressWarnings("unchecked")
T attributeType = (T) target;
if (attributeType == null) {
errors.reject("error.general");
} else {
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", "error.name");
ValidationUtils.rejectIfEmptyOrWhitespace(errors, "minOccurs", "error.null");
Integer minOccurs = attributeType.getMinOccurs();
Integer maxOccurs = attributeType.getMaxOccurs();
if (minOccurs != null) {
if (minOccurs < 0) {
errors.rejectValue("minOccurs", "AttributeType.minOccursShouldNotBeLessThanZero");
}
}
if (maxOccurs != null) {
if (maxOccurs < 1) {
errors.rejectValue("maxOccurs", "AttributeType.maxOccursShouldNotBeLessThanOne");
} else if (maxOccurs < minOccurs) {
errors.rejectValue("maxOccurs", "AttributeType.maxOccursShouldNotBeLessThanMinOccurs");
}
}
if (StringUtils.isBlank(attributeType.getDatatypeClassname())) {
errors.rejectValue("datatypeClassname", "error.null");
} else {
try {
CustomDatatypeUtil.getDatatype(attributeType);
}
catch (Exception ex) {
errors.rejectValue("datatypeConfig", "AttributeType.datatypeConfig.invalid", new Object[] { ex
.getMessage() }, "Invalid");
}
}
// ensure that handler is suitable for datatype
if (StringUtils.isNotEmpty(attributeType.getPreferredHandlerClassname())) {
try {
CustomDatatype<?> datatype = CustomDatatypeUtil.getDatatype(attributeType);
CustomDatatypeHandler<?, ?> handler = CustomDatatypeUtil.getHandler(attributeType);
if (!CustomDatatypeUtil.isCompatibleHandler(handler, datatype))
errors.rejectValue("preferredHandlerClassname",
"AttributeType.preferredHandlerClassname.wrongDatatype");
}
catch (Exception ex) {
errors.rejectValue("handlerConfig", "AttributeType.handlerConfig.invalid", new Object[] { ex
.getMessage() }, "Invalid");
}
}
}
}
}