runtime/org.argeo.slc.core/src/main/java/org/argeo/slc/core/execution/tasks/If.java

   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 }