Package org.jfree.data

Class AbstractDataset

java.lang.Object
org.jfree.data.AbstractDataset
All Implemented Interfaces:
ObjectInputValidation, Serializable, Cloneable, Dataset
Direct Known Subclasses:
AbstractSeriesDataset, CategoryToPieDataset, DefaultBoxAndWhiskerCategoryDataset, DefaultCategoryDataset, DefaultKeyedValueDataset, DefaultMeterDataset, DefaultPieDataset, DefaultStatisticalCategoryDataset, DefaultValueDataset, WaferMapDataset
public abstract class AbstractDataset
extends Object
implements Dataset, Cloneable, Serializable, ObjectInputValidation
An abstract implementation of the Dataset interface, containing a mechanism for registering change listeners.
See Also:
Serialized Form

  • Method Details

    • getGroup

      public DatasetGroup getGroup()
      Returns the dataset group for the dataset.
      Specified by:
      getGroup in interface Dataset
      Returns:
      the dataset group.

    • setGroup

      public void setGroup​(DatasetGroup group)
      Sets the dataset group for the dataset.
      Specified by:
      setGroup in interface Dataset
      Parameters:
      group - the dataset group.

    • addChangeListener

      public void addChangeListener​(DatasetChangeListener listener)
      Registers an object to receive notification of changes to the dataset.
      Specified by:
      addChangeListener in interface Dataset
      Parameters:
      listener - the object to register.

    • removeChangeListener

      public void removeChangeListener​(DatasetChangeListener listener)
      Deregisters an object so that it no longer receives notification of changes to the dataset.
      Specified by:
      removeChangeListener in interface Dataset
      Parameters:
      listener - the object to deregister.

    • clone

      public Object clone() throws CloneNotSupportedException
      Returns a clone of the dataset.

      The cloned dataset will NOT include the DatasetChangeListener references that have been registered with this dataset.

      Returns:
      A clone.
      Throws:
      CloneNotSupportedException - if the dataset does not support cloning.

    • validateObject

      public void validateObject() throws InvalidObjectException
      Validates the object. We use this opportunity to call listeners who have registered during the deserialization process, as listeners are not serialized. This method is called by the serialization system after the entire graph is read. This object has registered itself to the system with a priority of 10. Other callbacks may register with a higher priority number to be called before this object, or with a lower priority number to be called after the listeners were notified. All listeners are supposed to have register by now, either in their readObject or validateObject methods. Notify them that this dataset has changed.
      Specified by:
      validateObject in interface ObjectInputValidation
      Throws:
      InvalidObjectException - If the object cannot validate itself.