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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.qpid.disttest.message;
import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.beanutils.PropertyUtils;
public class ParticipantAttributeExtractor
{
public static Map<ParticipantAttribute, Object> getAttributes(Object targetObject)
{
Map<ParticipantAttribute, Object> attributes = new HashMap<ParticipantAttribute, Object>();
PropertyDescriptor[] descriptors = PropertyUtils.getPropertyDescriptors(targetObject);
for (PropertyDescriptor propertyDescriptor : descriptors)
{
final Method readMethod = getPropertyReadMethod(targetObject, propertyDescriptor);
for (Annotation annotation : readMethod.getDeclaredAnnotations())
{
if (annotation instanceof OutputAttribute)
{
OutputAttribute outputAttribute = (OutputAttribute) annotation;
Object value = getPropertyValue(targetObject, propertyDescriptor.getName());
attributes.put(outputAttribute.attribute(), value);
}
}
}
return attributes;
}
public static Method getPropertyReadMethod(Object targetObject, PropertyDescriptor propertyDescriptor)
{
final Method readMethod = propertyDescriptor.getReadMethod();
if (readMethod == null)
{
throw new RuntimeException("No read method for property " + propertyDescriptor.getName() + " on " + targetObject);
}
return readMethod;
}
public static Object getPropertyValue(Object targetObject, String propertyName)
{
try
{
return PropertyUtils.getProperty(targetObject, propertyName);
}
catch (IllegalAccessException e)
{
throw new RuntimeException("Couldn't get value of property " + propertyName + " from " + targetObject, e);
}
catch (InvocationTargetException e)
{
throw new RuntimeException("Couldn't get value of property " + propertyName + " from " + targetObject, e);
}
catch (NoSuchMethodException e)
{
throw new RuntimeException("Couldn't get value of property " + propertyName + " from " + targetObject, e);
}
}
}
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