| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * Licensed 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.onosproject.net.config; |
| |
| |
| import com.google.common.annotations.Beta; |
| |
| /** |
| * Base abstract factory for creating configuration subjects from their |
| * string key image. |
| * |
| * @param <S> subject class |
| */ |
| @Beta |
| public abstract class SubjectFactory<S> { |
| |
| private final Class<S> subjectClass; |
| private final String subjectKey; |
| |
| /** |
| * Creates a new configuration factory for the specified class of subjects |
| * capable of generating the configurations of the specified class. The |
| * subject and configuration class keys are used merely as keys for use in |
| * composite JSON trees. |
| * |
| * @param subjectClass subject class |
| * @param subjectKey subject class key |
| */ |
| protected SubjectFactory(Class<S> subjectClass, String subjectKey) { |
| this.subjectClass = subjectClass; |
| this.subjectKey = subjectKey; |
| } |
| |
| /** |
| * Returns the class of the subject to which this factory applies. |
| * |
| * @return subject type |
| */ |
| public Class<S> subjectClass() { |
| return subjectClass; |
| } |
| |
| /** |
| * Returns the unique key of this configuration subject class. |
| * This is primarily aimed for use in composite JSON trees in external |
| * representations and has no bearing on the internal behaviours. |
| * |
| * @return configuration key |
| */ |
| public String subjectKey() { |
| return subjectKey; |
| } |
| |
| /** |
| * Creates a configuration subject from its key image. |
| * |
| * @param subjectKey subject class key |
| * @return configuration subject |
| */ |
| public abstract S createSubject(String subjectKey); |
| |
| } |