/*
 * Copyright 2014-2019 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
 *
 *      https://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.springframework.integration.annotation;

/**
 * Common value constants for annotation attributes.
 *
 * @author Gary Russell
 * @since 4.1
 *
 */
public final class AnnotationConstants {

	/**
	 * Constant defining a value as a replacement for {@code null} which
	 * we cannot use in annotation attributes.
	 */
	public static final String NULL = "__NULL__";

	private AnnotationConstants() {
	}

}
