| /* |
| * 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.camel.spi; |
| |
| import java.util.Optional; |
| |
| /** |
| * Finder to find factories from the resource classpath, usually <b>META-INF/services/org/apache/camel/</b>. |
| */ |
| public interface FactoryFinder { |
| |
| /** |
| * Gets the resource classpath. |
| * |
| * @return the resource classpath. |
| */ |
| String getResourcePath(); |
| |
| /** |
| * Creates a new class instance using the key to lookup |
| * |
| * @param key is the key to add to the path to find a text file containing the factory name |
| * @return a newly created instance (if exists) |
| */ |
| Optional<Object> newInstance(String key); |
| |
| /** |
| * Creates a new class instance using the key to lookup |
| * |
| * @param key is the key to add to the path to find a text file containing the factory name |
| * @param type the class type |
| * @return a newly created instance (if exists) |
| */ |
| <T> Optional<T> newInstance(String key, Class<T> type); |
| |
| /** |
| * Finds the given factory class using the key to lookup. |
| * |
| * @param key is the key to add to the path to find a text file containing the factory name |
| * @return the factory class |
| */ |
| Optional<Class<?>> findClass(String key); |
| |
| /** |
| * Finds the given factory class using the key to lookup. |
| * |
| * @param key is the key to add to the path to find a text file containing the factory name |
| * @param propertyPrefix prefix on key |
| * @return the factory class |
| */ |
| Optional<Class<?>> findClass(String key, String propertyPrefix); |
| |
| /** |
| * Finds the given factory class using the key to lookup. |
| * |
| * @param key is the key to add to the path to find a text file containing the factory name |
| * @param propertyPrefix prefix on key |
| * @param clazz the class which is used for checking compatible |
| * @return the factory class |
| */ |
| Optional<Class<?>> findClass(String key, String propertyPrefix, Class<?> clazz); |
| |
| /** |
| * Finds the optional factory class using the key to lookup. |
| * |
| * @param key is the key to add to the path to find a text file containing the factory name |
| * @param propertyPrefix prefix on key |
| * @return the factory class if found, or <tt>null</tt> if no class existed |
| */ |
| Optional<Class<?>> findOptionalClass(String key, String propertyPrefix); |
| |
| } |