bundles/org.simantics.databoard/src/org/simantics/databoard/binding/reflection/VoidBinding.java

   1 /*******************************************************************************
   2  *  Copyright (c) 2010 Association for Decentralized Information Management in
   3  *  Industry THTH ry.
   4  *  All rights reserved. This program and the accompanying materials
   5  *  are made available under the terms of the Eclipse Public License v1.0
   6  *  which accompanies this distribution, and is available at
   7  *  http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  *  Contributors:
  10  *      VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.databoard.binding.reflection;
  13
  14 import org.simantics.databoard.binding.Binding;
  15 import org.simantics.databoard.binding.RecordBinding;
  16 import org.simantics.databoard.binding.error.BindingException;
  17 import org.simantics.databoard.type.Datatype;
  18 import org.simantics.databoard.type.RecordType;
  19
  20 /**
  21  * Binds void.class to {}
  22  */
  23 public class VoidBinding extends RecordBinding {
  24
  25         public static final Binding VOID_BINDING = new VoidBinding();
  26
  27         public VoidBinding() {
  28                 this.type = RecordType.VOID_TYPE;
  29                 this.componentBindings = new Binding[0];
  30         }
  31
  32         @Override
  33         public Object create(Object... value) throws BindingException {
  34                 return null;
  35         }
  36
  37         @Override
  38         public Object getComponent(Object obj, int index)
  39                         throws BindingException {
  40                 throw new BindingException();
  41         }
  42
  43         @Override
  44         public Object createPartial() throws BindingException {
  45                 return null;
  46         }
  47
  48         @Override
  49         public void readFrom(Binding srcBinding, Object src, Object dst)
  50                         throws BindingException {
  51         }
  52
  53         @Override
  54         public void setComponents(Object obj, Object... value)
  55                         throws BindingException {
  56                 if (value.length==0) return;
  57                 throw new BindingException();
  58         }
  59
  60         @Override
  61         public void setComponent(Object obj, int index, Object value)
  62                         throws BindingException {
  63                 throw new BindingException();
  64         }
  65
  66         @Override
  67         public boolean isInstance(Object obj) {
  68                 return obj==null;
  69         }
  70
  71         @Override
  72         public void setType(Datatype type) {
  73                 super.setType(type);
  74         }
  75
  76         @Override
  77         public boolean isImmutable() {
  78                 return true;
  79         }
  80 }
  81