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1   /**
2    * Logback: the reliable, generic, fast and flexible logging framework.
3    * Copyright (C) 1999-2022, QOS.ch. All rights reserved.
4    *
5    * This program and the accompanying materials are dual-licensed under
6    * either the terms of the Eclipse Public License v1.0 as published by
7    * the Eclipse Foundation
8    *
9    *   or (per the licensee's choosing)
10   *
11   * under the terms of the GNU Lesser General Public License version 2.1
12   * as published by the Free Software Foundation.
13   */
14  package ch.qos.logback.core.model.processor;
15  
16  import ch.qos.logback.core.Context;
17  import ch.qos.logback.core.model.AppenderRefModel;
18  import ch.qos.logback.core.model.Model;
19  
20  public class AppenderRefDependencyAnalyser extends ModelHandlerBase {
21  
22      public AppenderRefDependencyAnalyser(Context context) {
23          super(context);
24      }
25  
26      @Override
27      protected Class<AppenderRefModel> getSupportedModelClass() {
28          return AppenderRefModel.class;
29      }
30  
31      @Override
32      public void handle(ModelInterpretationContext mic, Model model) throws ModelHandlerException {
33  
34          AppenderRefModel appenderRefModel = (AppenderRefModel) model;
35  
36          String ref = mic.subst(appenderRefModel.getRef());
37  
38          
39          if (mic.isModelStackEmpty()) {
40              // appenderRefModel maybe the dependent model. This is the case in logback-access
41              DependencyDefinition dd = new DependencyDefinition(appenderRefModel, ref);
42              mic.addDependencyDefinition(dd);
43          } else {
44              Model parentModel = mic.peekModel();
45              DependencyDefinition dd = new DependencyDefinition(parentModel, ref);
46              mic.addDependencyDefinition(dd);
47          }
48      }
49  
50  }