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java.lang.Objectorg.jfree.data.general.AbstractDataset
org.jfree.data.general.DefaultPieDataset
public class DefaultPieDataset
A default implementation of the PieDataset
interface.
Constructor Summary | |
---|---|
DefaultPieDataset()
Constructs a new dataset, initially empty. |
|
DefaultPieDataset(KeyedValues data)
Creates a new dataset by copying data from a KeyedValues
instance. |
Method Summary | |
---|---|
void |
clear()
Clears all data from this dataset and sends a DatasetChangeEvent
to all registered listeners (unless the dataset was already empty). |
java.lang.Object |
clone()
Returns a clone of the dataset. |
boolean |
equals(java.lang.Object obj)
Tests if this object is equal to another. |
int |
getIndex(java.lang.Comparable key)
Returns the index for a key, or -1 if the key is not recognised. |
int |
getItemCount()
Returns the number of items in the dataset. |
java.lang.Comparable |
getKey(int item)
Returns the key for the specified item, or null . |
java.util.List |
getKeys()
Returns the categories in the dataset. |
java.lang.Number |
getValue(java.lang.Comparable key)
Returns the data value associated with a key. |
java.lang.Number |
getValue(int item)
Returns a value. |
int |
hashCode()
Returns a hash code. |
void |
remove(java.lang.Comparable key)
Removes an item from the dataset and sends a DatasetChangeEvent
to all registered listeners. |
void |
setValue(java.lang.Comparable key,
double value)
Sets the data value for a key and sends a DatasetChangeEvent to
all registered listeners. |
void |
setValue(java.lang.Comparable key,
java.lang.Number value)
Sets the data value for a key and sends a DatasetChangeEvent to
all registered listeners. |
void |
sortByKeys(org.jfree.util.SortOrder order)
Sorts the dataset's items by key and sends a DatasetChangeEvent
to all registered listeners. |
void |
sortByValues(org.jfree.util.SortOrder order)
Sorts the dataset's items by value and sends a DatasetChangeEvent
to all registered listeners. |
Methods inherited from class org.jfree.data.general.AbstractDataset |
---|
addChangeListener, fireDatasetChanged, getGroup, hasListener, notifyListeners, removeChangeListener, setGroup, validateObject |
Methods inherited from class java.lang.Object |
---|
finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface org.jfree.data.general.Dataset |
---|
addChangeListener, getGroup, removeChangeListener, setGroup |
Constructor Detail |
---|
public DefaultPieDataset()
public DefaultPieDataset(KeyedValues data)
KeyedValues
instance.
data
- the data (null
not permitted).Method Detail |
---|
public int getItemCount()
getItemCount
in interface Values
public java.util.List getKeys()
getKeys
in interface KeyedValues
public java.lang.Comparable getKey(int item)
null
.
getKey
in interface KeyedValues
item
- the item index (in the range 0
to
getItemCount() - 1
).
null
.
java.lang.IndexOutOfBoundsException
- if item
is not in the
specified range.public int getIndex(java.lang.Comparable key)
getIndex
in interface KeyedValues
key
- the key (null
not permitted).
-1
if the key is unrecognised.
java.lang.IllegalArgumentException
- if key
is
null
.public java.lang.Number getValue(int item)
getValue
in interface Values
item
- the value index.
null
).public java.lang.Number getValue(java.lang.Comparable key)
getValue
in interface KeyedValues
key
- the key (null
not permitted).
null
).
UnknownKeyException
- if the key is not recognised.public void setValue(java.lang.Comparable key, java.lang.Number value)
DatasetChangeEvent
to
all registered listeners.
key
- the key (null
not permitted).value
- the value.
java.lang.IllegalArgumentException
- if key
is
null
.public void setValue(java.lang.Comparable key, double value)
DatasetChangeEvent
to
all registered listeners.
key
- the key (null
not permitted).value
- the value.
java.lang.IllegalArgumentException
- if key
is
null
.public void remove(java.lang.Comparable key)
DatasetChangeEvent
to all registered listeners.
key
- the key (null
not permitted).
java.lang.IllegalArgumentException
- if key
is
null
.public void clear()
DatasetChangeEvent
to all registered listeners (unless the dataset was already empty).
public void sortByKeys(org.jfree.util.SortOrder order)
DatasetChangeEvent
to all registered listeners.
order
- the sort order (null
not permitted).public void sortByValues(org.jfree.util.SortOrder order)
DatasetChangeEvent
to all registered listeners.
order
- the sort order (null
not permitted).public boolean equals(java.lang.Object obj)
equals
in class java.lang.Object
obj
- the other object.
public int hashCode()
hashCode
in class java.lang.Object
public java.lang.Object clone() throws java.lang.CloneNotSupportedException
clone
in interface org.jfree.util.PublicCloneable
clone
in class AbstractDataset
java.lang.CloneNotSupportedException
- This class will not throw this
exception, but subclasses (if any) might.
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