org.eclipse.linuxtools.tmf.core/src/org/eclipse/linuxtools/tmf/core/statevalue/DoubleStateValue.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8
   9  * Contributors:
  10  *   Alexandre Montplaisir - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.tmf.core.statevalue;
  14
  15 import org.eclipse.jdt.annotation.Nullable;
  16
  17 /**
  18  * A state value containing a double primitive.
  19  *
  20  * @author Alexandre Montplaisir
  21  */
  22 final class DoubleStateValue extends TmfStateValue {
  23
  24     private final double value;
  25
  26     public DoubleStateValue(double value) {
  27         this.value = value;
  28     }
  29
  30     @Override
  31     public Type getType() {
  32         return Type.DOUBLE;
  33     }
  34
  35     @Override
  36     public boolean isNull() {
  37         return false;
  38     }
  39
  40     @Override
  41     public boolean equals(@Nullable Object object) {
  42         if (!(object instanceof DoubleStateValue)) {
  43             return false;
  44         }
  45         DoubleStateValue other = (DoubleStateValue) object;
  46         return (Double.compare(this.value, other.value) == 0);
  47     }
  48
  49     @Override
  50     public int hashCode() {
  51         long bits = Double.doubleToLongBits(value);
  52         return ((int) bits) ^ ((int) (bits >>> 32));
  53     }
  54
  55     @Override
  56     public @Nullable String toString() {
  57         return String.format("%3f", value); //$NON-NLS-1$
  58     }
  59
  60     // ------------------------------------------------------------------------
  61     // Unboxing methods
  62     // ------------------------------------------------------------------------
  63
  64     @Override
  65     public double unboxDouble() {
  66         return value;
  67     }
  68 }