/*
* 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.deltaspike.core.spi.config;
import java.util.List;
/**
* <p>Implement this interfaces to provide a ConfigSource provider which
* is able to maintain multiple ConfigSources. This is e.g. needed if
* there are multiple property files of a given name.</p>
*
* <p>If a ConfigSource like JNDI only exists once, then there is no need
* to implement it via the ConfigSourceProvider but should directly
* expose a {@link ConfigSource}.</p>
*
* <p>A ConfigSourceProvider will get picked up via the
* {@link java.util.ServiceLoader} mechanism and must get registered via
* META-INF/services/org.apache.deltaspike.core.spi.config.ConfigSourceProvider</p>
*/
public interface ConfigSourceProvider
{
/**
* @return For each e.g. property file, we return a single ConfigSource or an empty list if no ConfigSource exists.
*/
List<ConfigSource> getConfigSources();
}