bundles/org.simantics.databoard/src/org/simantics/databoard/binding/impl/DoubleBindingDefault.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.impl;
  13
  14 import org.simantics.databoard.binding.DoubleBinding;
  15 import org.simantics.databoard.binding.error.BindingException;
  16 import org.simantics.databoard.binding.error.UnsupportedOperationException;
  17 import org.simantics.databoard.type.DoubleType;
  18
  19 /**
  20  * Binds DoubleType to java.lang.Double
  21  *
  22  * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
  23  */
  24 public class DoubleBindingDefault extends DoubleBinding {
  25
  26         public DoubleBindingDefault(DoubleType type) {
  27                 super(type);
  28         }
  29
  30         @Override
  31         public DoubleType type() {
  32                 return (DoubleType) type;
  33         }
  34
  35         public Object create(Double value) {
  36                 return value;
  37         }
  38
  39         public Object create(double value) {
  40                 return Double.valueOf(value);
  41         }
  42
  43         @Override
  44         public Object create(Number value)
  45         {
  46                 if (value.getClass()==Double.class) return value;
  47                 return Double.valueOf( value.doubleValue() );
  48         }
  49
  50         @Override
  51         public Object create(String value) throws BindingException {
  52                 try {
  53                         return Double.parseDouble(value);
  54                 } catch (java.lang.NumberFormatException e) {
  55                         throw new BindingException( e );
  56                 }
  57         }
  58
  59         public Double getValue(Object o)
  60         throws BindingException
  61         {
  62                 if (o.getClass()!=Double.class)
  63                         throw new BindingException("Unexpected class "+o.getClass().getSimpleName()+", Double expected");
  64                 return ((Double)o);
  65         }
  66
  67         public double getValue_(Object o)
  68         throws BindingException
  69         {
  70                 if (o.getClass()!=Double.class)
  71                         throw new BindingException("Unexpected class "+o.getClass().getSimpleName()+", Double expected");
  72                 return ((Double)o);
  73         }
  74
  75         @Override
  76         public void setValue(Object obj, Number value) throws BindingException {
  77                 throw new UnsupportedOperationException("Cannot change the value of immutable java.lang.Double");
  78         }
  79
  80         public void setValue(Object obj, double value) throws BindingException {
  81                 throw new UnsupportedOperationException("Cannot change the value of immutable java.lang.Double");
  82         }
  83
  84     @Override
  85         public boolean isInstance(Object obj) {
  86                 return obj instanceof Double;
  87         }
  88
  89     @Override
  90     public boolean isImmutable() {
  91         return true;
  92     }
  93
  94     @Override
  95     public int compare(Object o1, Object o2)
  96     {
  97         Double d1 = (Double) o1;
  98         Double d2 = (Double) o2;
  99         return d1.compareTo(d2);
 100     }
 101
 102 }
 103