org.apache.rocketmq.client.java.hook.AttributeKey Maven / Gradle / Ivy
/*
* 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.rocketmq.client.java.hook;
import org.apache.rocketmq.shaded.com.google.common.base.Objects;
/**
* Key which can be used to access {@link Attribute}. Be aware that it is not possible to have multiple keys with the
* same name.
*
* @param the type of the {@link Attribute} which can be accessed via this {@link AttributeKey}.
*/
@SuppressWarnings("UnusedDeclaration") // 'T' is used only at compile time
public class AttributeKey {
private final String name;
private AttributeKey(String name) {
this.name = name;
}
public static AttributeKey create(String name) {
return new AttributeKey<>(name);
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
AttributeKey that = (AttributeKey) o;
return Objects.equal(name, that.name);
}
@Override
public int hashCode() {
return Objects.hashCode(name);
}
}