org.eclipse.tracecompass.statesystem.core/src/org/eclipse/tracecompass/statesystem/core/statevalue/LongStateValue.java

   1 /*******************************************************************************
   2  * Copyright (c) 2013, 2014 École Polytechnique de Montréal
   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  *   François Rajotte - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.tracecompass.statesystem.core.statevalue;
  14
  15 import org.eclipse.jdt.annotation.Nullable;
  16 import org.eclipse.tracecompass.statesystem.core.exceptions.StateValueTypeException;
  17
  18 /**
  19  * A state value containing a long integer (8 bytes).
  20  *
  21  * @version 1.0
  22  * @author François Rajotte
  23  */
  24 final class LongStateValue extends TmfStateValue {
  25
  26     private final long value;
  27
  28     public LongStateValue(long valueAsLong) {
  29         this.value = valueAsLong;
  30     }
  31
  32     @Override
  33     public Type getType() {
  34         return Type.LONG;
  35     }
  36
  37     @Override
  38     public boolean isNull() {
  39         return false;
  40     }
  41
  42     @Override
  43     public boolean equals(@Nullable Object object) {
  44         if (!(object instanceof LongStateValue)) {
  45             return false;
  46         }
  47         LongStateValue other = (LongStateValue) object;
  48         return (this.value == other.value);
  49     }
  50
  51     @Override
  52     public int hashCode() {
  53         return ((int) value) ^ ((int) (value >>> 32));
  54     }
  55
  56     @Override
  57     public @Nullable String toString() {
  58         return String.format("%3d", value); //$NON-NLS-1$
  59     }
  60
  61     // ------------------------------------------------------------------------
  62     // Unboxing methods
  63     // ------------------------------------------------------------------------
  64
  65     @Override
  66     public long unboxLong() {
  67         return value;
  68     }
  69
  70     @Override
  71     public int compareTo(@Nullable ITmfStateValue other) {
  72         if (other == null) {
  73             throw new IllegalArgumentException();
  74         }
  75
  76         switch (other.getType()) {
  77         case INTEGER:
  78             long otherLongValue = ((IntegerStateValue) other).unboxInt();
  79             return Long.compare(this.value, otherLongValue);
  80         case DOUBLE:
  81             double otherDoubleValue = ((DoubleStateValue) other).unboxDouble();
  82             return Double.compare(this.value, otherDoubleValue);
  83         case LONG:
  84             otherLongValue = ((LongStateValue) other).unboxLong();
  85             return Long.compare(this.value, otherLongValue);
  86         case NULL:
  87             return Long.compare(this.value, other.unboxLong());
  88         case STRING:
  89             throw new StateValueTypeException("A Long state value cannot be compared to a String state value."); //$NON-NLS-1$
  90         default:
  91             throw new StateValueTypeException("A Long state value cannot be compared to the type " + other.getType()); //$NON-NLS-1$
  92         }
  93
  94     }
  95
  96 }