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1   /*
2    * Copyright (C) 2007-2012 Argeo GmbH
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *         http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package org.argeo.slc.core.execution.tasks;
17  
18  import org.argeo.slc.SlcException;
19  
20  /** Conditional execution */
21  public class If implements Runnable {
22  	private Boolean is;
23  	private Boolean not;
24  	private Runnable then;
25  	private Runnable els;
26  
27  	public void run() {
28  		if (is == null && not == null)
29  			throw new SlcException("No condition set");
30  		if (is != null && not != null)
31  			throw new SlcException("Both is and not cannot be set");
32  
33  		boolean bool = (is != null ? is : !not);
34  		if (bool) {
35  			if (then != null)
36  				then.run();
37  		} else {
38  			if (els != null)
39  				els.run();
40  		}
41  
42  	}
43  
44  	public void setIs(Boolean bool) {
45  		this.is = bool;
46  	}
47  
48  	public void setThen(Runnable then) {
49  		this.then = then;
50  	}
51  
52  	public void setEls(Runnable els) {
53  		this.els = els;
54  	}
55  
56  	public Boolean getNot() {
57  		return not;
58  	}
59  
60  	public void setNot(Boolean not) {
61  		this.not = not;
62  	}
63  
64  }