001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.juneau.commons.settings;
018
019/**
020 * A writable extension of {@link PropertySource} that supports modifying property values.
021 */
022public interface PropertyStore extends PropertySource {
023
024   /**
025    * Sets a property in this store.
026    *
027    * @param name The property name.
028    * @param value The property value, or <c>null</c> to set an empty override.
029    */
030   void set(String name, String value);
031
032   /**
033    * Removes a property from this store.
034    *
035    * @param name The property name to remove.
036    */
037   void unset(String name);
038
039   /**
040    * Clears all properties from this store.
041    */
042   void clear();
043}