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Summary: Nested | Field | Method | Constr | Detail: Nested | Field | Method | Constr |
java.lang.Object
org.jfree.data.general.AbstractDataset
org.jfree.data.category.SlidingCategoryDataset
CategoryDataset
implementation that presents a subset of the
categories in an underlying dataset. The index of the first "visible"
category can be modified, which provides a means of "sliding" through
the categories in the underlying dataset.
Constructor Summary | |
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Method Summary | |
Object |
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boolean |
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int |
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int |
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Comparable |
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List |
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int |
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int |
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int |
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int |
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Comparable |
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List |
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CategoryDataset |
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Number |
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Number |
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void |
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void |
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Methods inherited from class org.jfree.data.general.AbstractDataset | |
addChangeListener , clone , fireDatasetChanged , getGroup , hasListener , notifyListeners , removeChangeListener , setGroup , validateObject |
public SlidingCategoryDataset(CategoryDataset underlying, int firstColumn, int maxColumns)
Creates a new instance.
- Parameters:
underlying
- the underlying dataset (null
not permitted).firstColumn
- the index of the first visible column from the underlying dataset.maxColumns
- the maximumColumnCount.
public Object clone() throws CloneNotSupportedException
Returns an independent copy of the dataset. Note that:
- the underlying dataset is only cloned if it implements the
PublicCloneable
interface;- the listeners registered with this dataset are not carried over to the cloned dataset.
- Overrides:
- clone in interface AbstractDataset
- Returns:
- An independent copy of the dataset.
public boolean equals(Object obj)
Tests thisSlidingCategoryDataset
for equality with an arbitrary object.
- Parameters:
obj
- the object (null
permitted).
- Returns:
- A boolean.
public int getColumnCount()
Returns the number of columns in the table.
- Specified by:
- getColumnCount in interface Values2D
- Returns:
- The column count.
public int getColumnIndex(Comparable key)
Returns the index for the specified column key.
- Specified by:
- getColumnIndex in interface KeyedValues2D
- Parameters:
key
- the key.
- Returns:
- The column index, or -1 if the key is not recognised.
public Comparable getColumnKey(int column)
Returns the column key for a given index.
- Specified by:
- getColumnKey in interface KeyedValues2D
- Parameters:
column
- the column index (zero-based).
- Returns:
- The column key.
public List getColumnKeys()
Returns the column keys.
- Specified by:
- getColumnKeys in interface KeyedValues2D
- Returns:
- The keys.
- See Also:
getColumnKey(int)
public int getFirstCategoryIndex()
Returns the index of the first visible category.
- Returns:
- The index.
- See Also:
setFirstCategoryIndex(int)
public int getMaximumCategoryCount()
Returns the maximum category count.
- Returns:
- The maximum category count.
- See Also:
setMaximumCategoryCount(int)
public int getRowCount()
Returns the number of rows in the table.
- Specified by:
- getRowCount in interface Values2D
- Returns:
- The row count.
public int getRowIndex(Comparable key)
Returns the row index for a given key.
- Specified by:
- getRowIndex in interface KeyedValues2D
- Parameters:
key
- the row key.
- Returns:
- The row index, or
-1
if the key is unrecognised.
public Comparable getRowKey(int row)
Returns the row key for a given index.
- Specified by:
- getRowKey in interface KeyedValues2D
- Parameters:
row
- the row index (zero-based).
- Returns:
- The row key.
public List getRowKeys()
Returns the row keys.
- Specified by:
- getRowKeys in interface KeyedValues2D
- Returns:
- The keys.
public CategoryDataset getUnderlyingDataset()
Returns the underlying dataset that was supplied to the constructor.
- Returns:
- The underlying dataset (never
null
).
public Number getValue(Comparable rowKey, Comparable columnKey)
Returns the value for a pair of keys.
- Specified by:
- getValue in interface KeyedValues2D
- Parameters:
rowKey
- the row key (null
not permitted).columnKey
- the column key (null
not permitted).
- Returns:
- The value (possibly
null
).
public Number getValue(int row, int column)
Returns a value from the table.
- Parameters:
row
- the row index (zero-based).column
- the column index (zero-based).
- Returns:
- The value (possibly
null
).
public void setFirstCategoryIndex(int first)
Sets the index of the first category that should be used from the underlying dataset, and sends aDatasetChangeEvent
to all registered listeners.
- Parameters:
first
- the index.
- See Also:
getFirstCategoryIndex()
public void setMaximumCategoryCount(int max)
Sets the maximum category count and sends aDatasetChangeEvent
to all registered listeners.
- Parameters:
max
- the maximum.
- See Also:
getMaximumCategoryCount()