Package org.jfree.data

Class DefaultKeyedValues2D

java.lang.Object

org.jfree.data.DefaultKeyedValues2D

All Implemented Interfaces:

Serializable, Cloneable, PublicCloneable, KeyedValues2D, Values2D

public class DefaultKeyedValues2D
extends Object
implements KeyedValues2D, PublicCloneable, Cloneable, Serializable

A data structure that stores zero, one or many values, where each value is associated with two keys (a 'row' key and a 'column' key). The keys should be (a) instances of Comparable and (b) immutable.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
DefaultKeyedValues2D()	Creates a new instance (initially empty).
DefaultKeyedValues2D(boolean sortRowKeys)	Creates a new instance (initially empty).

Method Summary

Modifier and Type	Method	Description
void	addValue(Number value, Comparable rowKey, Comparable columnKey)	Adds a value to the table.
void	clear()	Clears all the data and associated keys.
Object	clone()	Returns a clone.
boolean	equals(Object o)	Tests if this object is equal to another.
int	getColumnCount()	Returns the column count.
int	getColumnIndex(Comparable key)	Returns the column index for a given key.
Comparable	getColumnKey(int column)	Returns the key for a given column.
List	getColumnKeys()	Returns the column keys in an unmodifiable list.
int	getRowCount()	Returns the row count.
int	getRowIndex(Comparable key)	Returns the row index for a given key.
Comparable	getRowKey(int row)	Returns the key for a given row.
List	getRowKeys()	Returns the row keys in an unmodifiable list.
Number	getValue(int row, int column)	Returns the value for a given row and column.
Number	getValue(Comparable rowKey, Comparable columnKey)	Returns the value for the given row and column keys.
int	hashCode()	Returns a hash code.
void	removeColumn(int columnIndex)	Removes a column.
void	removeColumn(Comparable columnKey)	Removes a column from the table.
void	removeRow(int rowIndex)	Removes a row.
void	removeRow(Comparable rowKey)	Removes a row from the table.
void	removeValue(Comparable rowKey, Comparable columnKey)	Removes a value from the table by setting it to null.
void	setValue(Number value, Comparable rowKey, Comparable columnKey)	Adds or updates a value.

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DefaultKeyedValues2D

public DefaultKeyedValues2D()

Creates a new instance (initially empty).

DefaultKeyedValues2D

public DefaultKeyedValues2D(boolean sortRowKeys)

Creates a new instance (initially empty).

Parameters:

sortRowKeys - if the row keys should be sorted.

Method Details

getRowCount

public int getRowCount()

Returns the row count.

Specified by:

getRowCount in interface Values2D

Returns:

The row count.

See Also:

• getColumnCount()

getColumnCount

public int getColumnCount()

Returns the column count.

Specified by:

getColumnCount in interface Values2D

Returns:

The column count.

See Also:

• getRowCount()

getValue

public Number getValue(int row,
 int column)

Returns the value for a given row and column.

Specified by:

getValue in interface Values2D

Parameters:

row - the row index.

column - the column index.

Returns:

The value.

See Also:

• getValue(Comparable, Comparable)

getRowKey

public Comparable getRowKey(int row)

Returns the key for a given row.

Specified by:

getRowKey in interface KeyedValues2D

Parameters:

row - the row index (in the range 0 to getRowCount() - 1).

Returns:

The row key.

See Also:

• getRowIndex(Comparable)
• getColumnKey(int)

getRowIndex

public int getRowIndex(Comparable key)

Returns the row index for a given key.

Specified by:

getRowIndex in interface KeyedValues2D

Parameters:

key - the key (null not permitted).

Returns:

The row index.

See Also:

• getRowKey(int)
• getColumnIndex(Comparable)

getRowKeys

public List getRowKeys()

Returns the row keys in an unmodifiable list.

Specified by:

getRowKeys in interface KeyedValues2D

Returns:

The row keys.

See Also:

• getColumnKeys()

getColumnKey

public Comparable getColumnKey(int column)

Returns the key for a given column.

Specified by:

getColumnKey in interface KeyedValues2D

Parameters:

column - the column (in the range 0 to getColumnCount() - 1).

Returns:

The key.

See Also:

• getColumnIndex(Comparable)
• getRowKey(int)

getColumnIndex

public int getColumnIndex(Comparable key)

Returns the column index for a given key.

Specified by:

getColumnIndex in interface KeyedValues2D

Parameters:

key - the key (null not permitted).

Returns:

The column index.

See Also:

• getColumnKey(int)
• getRowIndex(Comparable)

getColumnKeys

public List getColumnKeys()

Returns the column keys in an unmodifiable list.

Specified by:

getColumnKeys in interface KeyedValues2D

Returns:

The column keys.

See Also:

• getRowKeys()

getValue

public Number getValue(Comparable rowKey,
 Comparable columnKey)

Returns the value for the given row and column keys. This method will throw an UnknownKeyException if either key is not defined in the data structure.

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).

See Also:

• addValue(Number, Comparable, Comparable)
• removeValue(Comparable, Comparable)

addValue

public void addValue(Number value,
 Comparable rowKey,
 Comparable columnKey)

Adds a value to the table. Performs the same function as #setValue(Number, Comparable, Comparable).

Parameters:

value - the value (null permitted).

rowKey - the row key (null not permitted).

columnKey - the column key (null not permitted).

See Also:

• setValue(Number, Comparable, Comparable)
• removeValue(Comparable, Comparable)

setValue

public void setValue(Number value,
 Comparable rowKey,
 Comparable columnKey)

Adds or updates a value.

Parameters:

value - the value (null permitted).

rowKey - the row key (null not permitted).

columnKey - the column key (null not permitted).

See Also:

• addValue(Number, Comparable, Comparable)
• removeValue(Comparable, Comparable)

removeValue

public void removeValue(Comparable rowKey,
 Comparable columnKey)

Removes a value from the table by setting it to null. If all the values in the specified row and/or column are now null, the row and/or column is removed from the table.

Parameters:

rowKey - the row key (null not permitted).

columnKey - the column key (null not permitted).

See Also:

• addValue(Number, Comparable, Comparable)

removeRow

public void removeRow(int rowIndex)

Removes a row.

Parameters:

rowIndex - the row index.

See Also:

• removeRow(Comparable)
• removeColumn(int)

removeRow

public void removeRow(Comparable rowKey)

Removes a row from the table.

Parameters:

rowKey - the row key (null not permitted).

Throws:

UnknownKeyException - if rowKey is not defined in the table.

See Also:

• removeRow(int)
• removeColumn(Comparable)

removeColumn

public void removeColumn(int columnIndex)

Removes a column.

Parameters:

columnIndex - the column index.

See Also:

• removeColumn(Comparable)
• removeRow(int)

removeColumn

public void removeColumn(Comparable columnKey)

Removes a column from the table.

Parameters:

columnKey - the column key (null not permitted).

Throws:

UnknownKeyException - if the table does not contain a column with the specified key.

IllegalArgumentException - if columnKey is null.

See Also:

• removeColumn(int)
• removeRow(Comparable)

clear

public void clear()

Clears all the data and associated keys.

equals

public boolean equals(Object o)

Tests if this object is equal to another.

Overrides:

equals in class Object

Parameters:

o - the other object (null permitted).

Returns:

A boolean.

hashCode

public int hashCode()

Returns a hash code.

Overrides:

hashCode in class Object

Returns:

A hash code.

clone

public Object clone()
             throws CloneNotSupportedException

Returns a clone.

Specified by:

clone in interface PublicCloneable

Overrides:

clone in class Object

Returns:

A clone.

Throws:

CloneNotSupportedException - this class will not throw this exception, but subclasses (if any) might.