ValueFetcherFromGetter.java example

Explorer
datakernel-master
/*
 * Copyright (C) 2015 SoftIndex LLC.
 *
 * 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 io.datakernel.jmx;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

import static io.datakernel.util.Preconditions.checkNotNull;

final class ValueFetcherFromGetter implements ValueFetcher {
	private final Method getter;

	public ValueFetcherFromGetter(Method getter) {
		this.getter = checkNotNull(getter);
	}

	@Override
	public Object fetchFrom(Object source) {
		try {
			return getter.invoke(source);
		} catch (IllegalAccessException e) {
			throw new RuntimeException(e);
		} catch (InvocationTargetException e) {
			throw new RuntimeException("ITE caused by: " + e.getCause(), e);
		}
	}
}