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  
15  package ch.qos.logback.core.joran.conditional;
16  
17  import org.xml.sax.Attributes;
18  
19  import ch.qos.logback.core.joran.action.BaseModelAction;
20  import ch.qos.logback.core.joran.action.PreconditionValidator;
21  import ch.qos.logback.core.joran.spi.SaxEventInterpretationContext;
22  import ch.qos.logback.core.model.conditional.IfModel;
23  import ch.qos.logback.core.model.Model;
24  
25  public class IfAction extends BaseModelAction  {
26      
27      public static final String CONDITION_ATTRIBUTE = "condition"; 
28      
29      @Override
30      protected boolean validPreconditions(SaxEventInterpretationContext interpcont, String name, Attributes attributes) {
31          PreconditionValidator pv = new PreconditionValidator(this, interpcont, name, attributes);
32          pv.validateGivenAttribute(CONDITION_ATTRIBUTE);
33          return pv.isValid();
34      }
35      
36      @Override
37      protected Model buildCurrentModel(SaxEventInterpretationContext interpretationContext, String name,
38              Attributes attributes) {
39          IfModel ifModel = new IfModel();
40          
41          String condition = attributes.getValue(CONDITION_ATTRIBUTE);
42          ifModel.setCondition(condition);
43          
44          return ifModel;
45      }
46  
47  }