/*
* Copyright 2005-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.dozer.util;
import org.dozer.config.BeanContainer;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
/**
* Internal class used to perform various validations. Validates mapping requests, field mappings, URL's, etc. Only
* intended for internal use.
*
* @author tierney.matt
* @author garsombke.franz
*/
public final class MappingValidator {
private MappingValidator() {}
public static void validateMappingRequest(Object srcObj) {
if (srcObj == null) {
MappingUtils.throwMappingException("Source object must not be null");
}
}
public static void validateMappingRequest(Object srcObj, Object destObj) {
validateMappingRequest(srcObj);
if (destObj == null) {
MappingUtils.throwMappingException("Destination object must not be null");
}
}
public static void validateMappingRequest(Object srcObj, Class<?> destClass) {
validateMappingRequest(srcObj);
if (destClass == null) {
MappingUtils.throwMappingException("Destination class must not be null");
}
}
public static URL validateURL(String fileName) {
DozerClassLoader classLoader = BeanContainer.getInstance().getClassLoader();
if (fileName == null) {
MappingUtils.throwMappingException("File name is null");
}
URL url = classLoader.loadResource(fileName);
if (url == null) {
MappingUtils.throwMappingException("Unable to locate dozer mapping file [" + fileName + "] in the classpath!");
}
InputStream stream = null;
try {
stream = url.openStream();
} catch (IOException e) {
MappingUtils.throwMappingException("Unable to open URL input stream for dozer mapping file [" + url + "]");
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
MappingUtils.throwMappingException("Unable to close input stream for dozer mapping file [" + url + "]");
}
}
}
return url;
}
}