com.alibaba.nacos.naming.selector.NoneSelector Maven / Gradle / Ivy
/*
* Copyright 1999-2021 Alibaba Group Holding Ltd.
*
* 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 com.alibaba.nacos.naming.selector;
import com.alibaba.nacos.api.exception.NacosException;
import com.alibaba.nacos.api.naming.pojo.Instance;
import com.alibaba.nacos.api.selector.Selector;
import java.util.List;
/**
* Selector with no filtering.
*
* @author chenglu
* @date 2021-08-04 13:28
*/
public class NoneSelector implements Selector, List, String> {
private static final String CONTEXT_TYPE = "NONE";
private static final String TYPE = "none";
@Override
public Selector, List, String> parse(String condition) throws NacosException {
return this;
}
@Override
public List select(List context) {
return context;
}
@Override
public String getType() {
return TYPE;
}
@Override
public String getContextType() {
return CONTEXT_TYPE;
}
}