1 | |
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2 | package edu.stanford.rt.datatype; |
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3 | |
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4 | import edu.stanford.rt.util.*; |
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5 | |
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6 | /** |
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7 | DecimalType defines the decimal type. The name for this type is "DecimalType". |
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8 | It has the following attributes: min, max, base, and step. |
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9 | |
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10 | TODO |
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11 | */ |
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12 | public class DecimalType extends OrderedType |
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13 | { |
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14 | private double min; |
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15 | private double max; |
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16 | private boolean includeMin = true; |
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17 | private boolean includeMax = true; |
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18 | private double base; |
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19 | private double step; |
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20 | |
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21 | /** |
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22 | |
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23 | */ |
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24 | public DecimalType (String name, double min, double ma, |
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25 | boolean includeMin,boolean includeMax, |
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26 | double base, double step) |
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27 | throws IllegalArgumentException |
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28 | { |
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29 | super(name); |
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30 | |
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31 | //throw new UnsupportedException(); |
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32 | |
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33 | // Check to make sure that at least one value is legal |
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34 | if (min > max) { |
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35 | throw new IllegalArgumentException("DecimalType: min > max"); |
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36 | } |
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37 | if(base < min || base > max) { |
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38 | throw new IllegalArgumentException( |
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39 | "DecimalType: base in not within min and max"); |
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40 | } |
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41 | if (step <= 0) { |
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42 | throw new IllegalArgumentException("DecimalType: step <= 0"); |
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43 | } |
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44 | |
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45 | double x = (min - base) % step; |
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46 | if (x>0 && (min + step - x) > max) { |
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47 | throw new IllegalArgumentException( |
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48 | "DecimalType: First legal value is out of bound."); |
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49 | } |
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50 | |
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51 | this.min = min; |
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52 | this.max = max; |
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53 | this.includeMin = includeMin; |
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54 | this.includeMax = includeMax; |
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55 | this.base = base; |
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56 | this.step = step; |
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57 | } |
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58 | |
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59 | public double getMin() |
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60 | { |
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61 | return min; |
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62 | } |
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63 | public double getMax() |
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64 | { |
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65 | return max; |
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66 | } |
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67 | public boolean isMinIncluded() |
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68 | { |
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69 | return includeMin; |
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70 | } |
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71 | public boolean isMaxIncluded() |
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72 | { |
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73 | return includeMax; |
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74 | } |
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75 | public double getBase() |
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76 | { |
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77 | return base; |
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78 | } |
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79 | public double getStep() |
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80 | { |
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81 | return step; |
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82 | } |
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83 | |
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84 | public boolean isValidValue(DataValue v) |
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85 | { |
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86 | if (!(v instanceof DecimalValue)) { |
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87 | return false; |
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88 | } |
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89 | |
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90 | double l = ((DecimalValue)v).getValue(); |
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91 | if (l >= min && l<= max && ((l-base) % step == 0)) { |
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92 | return true; |
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93 | } |
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94 | return false; |
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95 | } |
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96 | |
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97 | public int compares(DataValue value1, DataValue value2) |
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98 | { |
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99 | if(!(value1 instanceof DecimalValue) || |
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100 | !(value2 instanceof DecimalValue) ) |
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101 | throw new IllegalArgumentException( |
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102 | "Wrong argument type"); |
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103 | |
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104 | double val1 = ((DecimalValue)value1).getValue(); |
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105 | double val2 = ((DecimalValue)value2).getValue(); |
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106 | |
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107 | if(val1 < val2) |
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108 | return -1; |
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109 | else if(val1 > val2) |
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110 | return 1; |
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111 | else |
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112 | return 0; |
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113 | } |
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114 | |
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115 | public String toString(String indent) |
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116 | { |
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117 | String thisIndent = indent+" "; |
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118 | return thisIndent + "DecimalType: \n"; |
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119 | } |
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120 | |
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121 | |
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122 | } |
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