Examples of org.joda.time.DurationFieldType

org.joda.time.DurationFieldType
Identifies a duration field, such as years or minutes, in a chronology-neutral way.
A duration field type defines the type of the field, such as hours. If does not directly enable any calculations, however it does provide a {@link #getField(Chronology)} method that returns the actual calculation enginefor a particular chronology.
Instances of DurationFieldType are singletons. They can be compared using ==.
If required, you can create your own field, for example a quarters. You must create a subclass of DurationFieldType that defines the field type. This class returns the actual calculation engine from {@link #getField(Chronology)}. @author Stephen Colebourne @author Brian S O'Neill @since 1.0

  }
  protected static Period getJodaTimePeriod(Partial p)
  {
    if (p.size() > 0) {
      DateTimeFieldType dtType = p.getFieldType(p.size()-1);
      DurationFieldType dType = dtType.getDurationType();
      Period period = new Period();
      if (period.isSupported(dType)) {
       return period.withField(dType, 1);
      } else {
        DurationField df = dType.getField(p.getChronology());
        if (df instanceof ScaledDurationField) {
          ScaledDurationField sdf = (ScaledDurationField) df;
          return period.withField(sdf.getWrappedField().getType(), sdf.getScalar());
        }
       // PeriodType.forFields(new DurationFieldType[]{dType});

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  public static Period discardMoreSpecificFields(Period p, DurationFieldType dft, Chronology chronology)
  {
    DurationField df = dft.getField(chronology);
    Period res = new Period();
    for (int i = 0; i < p.size(); i++) {
      DurationFieldType fieldType = p.getFieldType(i);
      DurationField f = fieldType.getField(chronology);
      int cmp = df.compareTo(f);
      if (cmp <= 0) {
        res = res.withField(fieldType, p.getValue(i));
      }
    }

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          p = p.with(fieldType, p2.getValue(i));
        }
      }
    }
    if (granularity != null) {
      DurationFieldType mostSpecific = getMostSpecific(granularity);
      p = discardMoreSpecificFields(p, mostSpecific);
    }
    return p;
  }

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  }


  // Returns if df1 is more general than df2
  public static boolean isMoreGeneral(DateTimeFieldType df1, DateTimeFieldType df2, Chronology chronology)
  {
    DurationFieldType df1DurationFieldType = df1.getDurationType();
    DurationFieldType df2DurationFieldType = df2.getDurationType();
    if (!df2DurationFieldType.equals(df1DurationFieldType)) {
      DurationField df1Unit = df1DurationFieldType.getField(chronology);
      DurationFieldType p = df2.getRangeDurationType();
      if (p != null) {
        DurationField df2Unit = df2DurationFieldType.getField(chronology);
        int cmp = df1Unit.compareTo(df2Unit);
        if (cmp > 0) {
          return true;

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  }


  // Returns if df1 is more specific than df2
  public static boolean isMoreSpecific(DateTimeFieldType df1, DateTimeFieldType df2, Chronology chronology)
  {
    DurationFieldType df1DurationFieldType = df1.getDurationType();
    DurationFieldType df2DurationFieldType = df2.getDurationType();
    if (!df2DurationFieldType.equals(df1DurationFieldType)) {
      DurationField df2Unit = df2DurationFieldType.getField(chronology);
      DurationFieldType p = df1.getRangeDurationType();
      if (p != null) {
        DurationField df1Unit = df1DurationFieldType.getField(chronology);
        int cmp = df1Unit.compareTo(df2Unit);
        if (cmp < 0) {
          return true;

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     * Private method called from constructor.
     */
    private void setPeriodInternal(ReadablePeriod period) {
        int[] newValues = new int[size()];
        for (int i = 0, isize = period.size(); i < isize; i++) {
            DurationFieldType type = period.getFieldType(i);
            int value = period.getValue(i);
            checkAndUpdate(type, newValues, value);
        }
        setValues(newValues);
    }

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     * @return the updated values
     * @throws IllegalArgumentException if an unsupported field's value is non-zero
     */
    protected int[] mergePeriodInto(int[] values, ReadablePeriod period) {
         for (int i = 0, isize = period.size(); i < isize; i++) {
             DurationFieldType type = period.getFieldType(i);
             int value = period.getValue(i);
             checkAndUpdate(type, values, value);
         }
         return values;
    }

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     * @return the updated values
     * @throws IllegalArgumentException if an unsupported field's value is non-zero
     */
    protected int[] addPeriodInto(int[] values, ReadablePeriod period) {
         for (int i = 0, isize = period.size(); i < isize; i++) {
             DurationFieldType type = period.getFieldType(i);
             int value = period.getValue(i);
             if (value != 0) {
                 int index = indexOf(type);
                 if (index == -1) {
                     throw new IllegalArgumentException(
                         "Period does not support field '" + type.getName() + "'");
                 } else {
                     values[index] = FieldUtils.safeAdd(getValue(index), value);
                 }
             }
         }

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     * Private method called from constructor.
     */
    private void setPeriodInternal(ReadablePeriod period) {
        int[] newValues = new int[size()];
        for (int i = 0, isize = period.size(); i < isize; i++) {
            DurationFieldType type = period.getFieldType(i);
            int value = period.getValue(i);
            checkAndUpdate(type, newValues, value);
        }
        iValues = newValues;
    }

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     * @return the updated values
     * @throws IllegalArgumentException if an unsupported field's value is non-zero
     */
    protected int[] mergePeriodInto(int[] values, ReadablePeriod period) {
         for (int i = 0, isize = period.size(); i < isize; i++) {
             DurationFieldType type = period.getFieldType(i);
             int value = period.getValue(i);
             checkAndUpdate(type, values, value);
         }
         return values;
    }

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