Module platform
Package org.jfree.data

Class ComparableObjectSeries

java.lang.Object
org.jfree.data.general.Series
org.jfree.data.ComparableObjectSeries
All Implemented Interfaces:
Serializable, Cloneable
Direct Known Subclasses:
OHLCSeries, VectorSeries, XIntervalSeries, XYIntervalSeries, YIntervalSeries
public class ComparableObjectSeries extends Series implements Cloneable, Serializable
A (possibly ordered) list of (Comparable, Object) data items.
See Also:

  • Field Details

    • data

      protected List data
      Storage for the data items in the series.

  • Constructor Details

    • ComparableObjectSeries

      public ComparableObjectSeries(Comparable key)
      Creates a new empty series. By default, items added to the series will be sorted into ascending order by x-value, and duplicate x-values will be allowed (these defaults can be modified with another constructor.
      Parameters:
      key - the series key (null not permitted).

    • ComparableObjectSeries

      public ComparableObjectSeries(Comparable key, boolean autoSort, boolean allowDuplicateXValues)
      Constructs a new series that contains no data. You can specify whether or not duplicate x-values are allowed for the series.
      Parameters:
      key - the series key (null not permitted).
      autoSort - a flag that controls whether or not the items in the series are sorted.
      allowDuplicateXValues - a flag that controls whether duplicate x-values are allowed.

  • Method Details

    • getAutoSort

      public boolean getAutoSort()
      Returns the flag that controls whether the items in the series are automatically sorted. There is no setter for this flag, it must be defined in the series constructor.
      Returns:
      A boolean.

    • getAllowDuplicateXValues

      public boolean getAllowDuplicateXValues()
      Returns a flag that controls whether duplicate x-values are allowed. This flag can only be set in the constructor.
      Returns:
      A boolean.

    • getItemCount

      public int getItemCount()
      Returns the number of items in the series.
      Specified by:
      getItemCount in class Series
      Returns:
      The item count.

    • getMaximumItemCount

      public int getMaximumItemCount()
      Returns the maximum number of items that will be retained in the series. The default value is Integer.MAX_VALUE.
      Returns:
      The maximum item count.
      See Also:

    • setMaximumItemCount

      public void setMaximumItemCount(int maximum)
      Sets the maximum number of items that will be retained in the series. If you add a new item to the series such that the number of items will exceed the maximum item count, then the first element in the series is automatically removed, ensuring that the maximum item count is not exceeded.

      Typically this value is set before the series is populated with data, but if it is applied later, it may cause some items to be removed from the series (in which case a SeriesChangeEvent will be sent to all registered listeners.

      Parameters:
      maximum - the maximum number of items for the series.

    • add

      protected void add(Comparable x, Object y)
      Adds new data to the series and sends a SeriesChangeEvent to all registered listeners.

      Throws an exception if the x-value is a duplicate AND the allowDuplicateXValues flag is false.

      Parameters:
      x - the x-value (null not permitted).
      y - the y-value (null permitted).

    • add

      protected void add(Comparable x, Object y, boolean notify)
      Adds new data to the series and, if requested, sends a SeriesChangeEvent to all registered listeners.

      Throws an exception if the x-value is a duplicate AND the allowDuplicateXValues flag is false.

      Parameters:
      x - the x-value (null not permitted).
      y - the y-value (null permitted).
      notify - a flag the controls whether or not a SeriesChangeEvent is sent to all registered listeners.

    • add

      protected void add(ComparableObjectItem item, boolean notify)
      Adds a data item to the series and, if requested, sends a SeriesChangeEvent to all registered listeners.
      Parameters:
      item - the (x, y) item (null not permitted).
      notify - a flag that controls whether or not a SeriesChangeEvent is sent to all registered listeners.

    • indexOf

      public int indexOf(Comparable x)
      Returns the index of the item with the specified x-value, or a negative index if the series does not contain an item with that x-value. Be aware that for an unsorted series, the index is found by iterating through all items in the series.
      Parameters:
      x - the x-value (null not permitted).
      Returns:
      The index.

    • update

      protected void update(Comparable x, Object y)
      Updates an item in the series.
      Parameters:
      x - the x-value (null not permitted).
      y - the y-value (null permitted).
      Throws:
      SeriesException - if there is no existing item with the specified x-value.

    • updateByIndex

      protected void updateByIndex(int index, Object y)
      Updates the value of an item in the series and sends a SeriesChangeEvent to all registered listeners.
      Parameters:
      index - the item (zero based index).
      y - the new value (null permitted).

    • getDataItem

      protected ComparableObjectItem getDataItem(int index)
      Return the data item with the specified index.
      Parameters:
      index - the index.
      Returns:
      The data item with the specified index.

    • delete

      protected void delete(int start, int end)
      Deletes a range of items from the series and sends a SeriesChangeEvent to all registered listeners.
      Parameters:
      start - the start index (zero-based).
      end - the end index (zero-based).

    • clear

      public void clear()
      Removes all data items from the series and, unless the series is already empty, sends a SeriesChangeEvent to all registered listeners.

    • remove

      protected ComparableObjectItem remove(int index)
      Removes the item at the specified index and sends a SeriesChangeEvent to all registered listeners.
      Parameters:
      index - the index.
      Returns:
      The item removed.

    • remove

      public ComparableObjectItem remove(Comparable x)
      Removes the item with the specified x-value and sends a SeriesChangeEvent to all registered listeners.
      Parameters:
      x - the x-value.
      Returns:
      The item removed.

    • equals

      public boolean equals(Object obj)
      Tests this series for equality with an arbitrary object.
      Overrides:
      equals in class Series
      Parameters:
      obj - the object to test against for equality (null permitted).
      Returns:
      A boolean.

    • hashCode

      public int hashCode()
      Returns a hash code.
      Overrides:
      hashCode in class Series
      Returns:
      A hash code.