| /* |
| * 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.openjpa.lib.conf; |
| |
| import java.util.Map; |
| |
| /** |
| * Implementations of this interface can populate {@link Configuration}s in |
| * some environment-specific way. Implementations must implement the |
| * <code>equals</code> and <code>hashCode</code> methods so that equivalent |
| * configurations compare equal. |
| * |
| * @since 0.4.0.0 |
| */ |
| public interface ConfigurationProvider { |
| |
| /** |
| * Return properties loaded thus far, or empty map if none. |
| */ |
| Map<String,Object> getProperties(); |
| |
| /** |
| * Add the given properties to those in this provider, overwriting |
| * any existing properties under the same keys. |
| */ |
| void addProperties(Map<?,?> props); |
| |
| /** |
| * Add a single property, overwriting any existing property under the |
| * same key. |
| */ |
| Object addProperty(String key, Object value); |
| |
| /** |
| * Set loaded information into the given configuration. |
| */ |
| void setInto(Configuration conf); |
| } |