| /* |
| * |
| * 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.server.model; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Type; |
| |
| import org.apache.qpid.server.util.ServerScopedRuntimeException; |
| |
| abstract class ConfiguredObjectMethodAttributeOrStatistic<C extends ConfiguredObject, T> |
| implements ConfiguredObjectAttributeOrStatistic<C,T> |
| { |
| |
| private final String _name; |
| private final Class<T> _type; |
| private final Method _getter; |
| |
| ConfiguredObjectMethodAttributeOrStatistic(final Method getter) |
| { |
| |
| _getter = getter; |
| _type = (Class<T>) AttributeValueConverter.getTypeFromMethod(getter); |
| _name = AttributeValueConverter.getNameFromMethod(getter, getType()); |
| } |
| |
| @Override |
| public String getName() |
| { |
| return _name; |
| } |
| |
| @Override |
| public Class<T> getType() |
| { |
| return _type; |
| } |
| |
| @Override |
| public Type getGenericType() |
| { |
| return getGetter().getGenericReturnType(); |
| } |
| |
| @Override |
| public T getValue(C configuredObject) |
| { |
| try |
| { |
| return (T) getGetter().invoke(configuredObject); |
| } |
| catch (IllegalAccessException e) |
| { |
| // This should never happen as it would imply a getter which is not public |
| throw new ServerScopedRuntimeException("Unable to get value for '"+getName() |
| +"' from configured object of category " |
| + configuredObject.getCategoryClass().getSimpleName(), e); |
| } |
| catch (InvocationTargetException e) |
| { |
| Throwable targetException = e.getTargetException(); |
| if(targetException instanceof RuntimeException) |
| { |
| throw (RuntimeException)targetException; |
| } |
| else if(targetException instanceof Error) |
| { |
| throw (Error)targetException; |
| } |
| else |
| { |
| // This should never happen as it would imply a getter which is declaring a checked exception |
| throw new ServerScopedRuntimeException("Unable to get value for '"+getName() |
| +"' from configured object of category " |
| + configuredObject.getCategoryClass().getSimpleName(), e); |
| } |
| } |
| |
| } |
| |
| public Method getGetter() |
| { |
| return _getter; |
| } |
| |
| } |