| /* |
| * Copyright 2011 Marc Grue. |
| * |
| * 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.qi4j.sample.dcicargo.sample_b.infrastructure.dci; |
| |
| import org.qi4j.api.injection.scope.Structure; |
| import org.qi4j.api.query.QueryBuilderFactory; |
| import org.qi4j.api.unitofwork.UnitOfWorkFactory; |
| import org.qi4j.api.value.ValueBuilderFactory; |
| |
| /** |
| * RoleMixin |
| * |
| * Base class for Methodful Roles in Contexts |
| * |
| * Helps "inject" the Context object into the Role Player. |
| * |
| * The context field name is now "c" since we don't want the word "context" interfere |
| * with domain semantics. We could for instance in one domain have some "material context" |
| * where "context" is not a DCI Context but the context of some material. In that case a |
| * DCI keyword "context" would confuse the semantics. We could also use "ctx", but why not |
| * the shortest option? Less typing, and we know what it is. Furthermore a single letter is |
| * easier to spot in the code masses than "ctx" (good to be able to quickly spot all uses |
| * of the Context). |
| */ |
| public abstract class RoleMixin<T extends Context> |
| { |
| // Context object reference |
| public T c; |
| |
| // Other common role services/methods could be added here... |
| |
| @Structure |
| public UnitOfWorkFactory uowf; |
| |
| @Structure |
| public QueryBuilderFactory qbf; |
| |
| @Structure |
| public ValueBuilderFactory vbf; |
| |
| /** |
| * setContext is called with method invocation in {@link Context#setContext(Object, Context)} |
| * (therefore "never used" according to IDE) |
| */ |
| public void setContext( T context ) |
| { |
| c = context; |
| } |
| } |