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package org.apache.lucene.queryParser.core.config;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* An instance of this class represents a key that is used to retrieve a value
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* from {@link AbstractQueryConfig}. It also holds the value's type, which is
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* defined in the generic argument.
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* @see AbstractQueryConfig
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final public class ConfigurationKey<T> {
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private ConfigurationKey() {}
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* Creates a new instance.
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* @param <T> the value's type
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* @return a new instance
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public static <T> ConfigurationKey<T> newInstance() {
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return new ConfigurationKey<T>();