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org.jfree.data

Class KeyedObjects2D

Implemented Interfaces:
Cloneable, Serializable
public class KeyedObjects2D
extends java.lang.Object
implements Cloneable, Serializable
A data structure that stores zero, one or many objects, where each object is associated with two keys (a 'row' key and a 'column' key).

Constructor Summary

KeyedObjects2D()
Creates a new instance (initially empty).

Method Summary

void
addObject(Object object, Comparable rowKey, Comparable columnKey)
Adds an object to the table.
Object
clone()
Returns a clone.
boolean
equals(Object obj)
Tests this object for equality with an arbitrary object.
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.
Object
getObject(Comparable rowKey, Comparable columnKey)
Returns the object for the given row and column keys.
Object
getObject(int row, int column)
Returns the object for a given row and column.
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.
int
hashCode()
Returns a hashcode for this object.
void
removeColumn(Comparable columnKey)
Removes a column.
void
removeColumn(int columnIndex)
Removes a column.
void
removeObject(Comparable rowKey, Comparable columnKey)
Removes an object.
void
removeRow(Comparable rowKey)
Removes a row.
void
removeRow(int rowIndex)
Removes a row.
void
setObject(Object object, Comparable rowKey, Comparable columnKey)
Adds or updates an object.

Constructor Details

KeyedObjects2D

public KeyedObjects2D()
Creates a new instance (initially empty).

Method Details

addObject

public void addObject(Object object,
                      Comparable rowKey,
                      Comparable columnKey)
Adds an object to the table. Performs the same function as setObject().
Parameters:
object - the object.
rowKey - the row key.
columnKey - the column key.

clone

public Object clone()
            throws CloneNotSupportedException
Returns a clone.
Returns:
A clone.

equals

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

getColumnCount

public int getColumnCount()
Returns the column count.
Returns:
The column count.

getColumnIndex

public int getColumnIndex(Comparable key)
Returns the column index for a given key.
Parameters:
key - the key.
Returns:
The column index.

getColumnKey

public Comparable getColumnKey(int column)
Returns the key for a given column.
Parameters:
column - the column.
Returns:
The key.

getColumnKeys

public List getColumnKeys()
Returns the column keys.
Returns:
The column keys (never null).

getObject

public Object getObject(Comparable rowKey,
                        Comparable columnKey)
Returns the object for the given row and column keys.
Parameters:
rowKey - the row key.
columnKey - the column key.
Returns:
The object.

getObject

public Object getObject(int row,
                        int column)
Returns the object for a given row and column.
Parameters:
row - the row index.
column - the column index.
Returns:
The object.

getRowCount

public int getRowCount()
Returns the row count.
Returns:
The row count.

getRowIndex

public int getRowIndex(Comparable key)
Returns the row index for a given key.
Parameters:
key - the key.
Returns:
The row index.

getRowKey

public Comparable getRowKey(int row)
Returns the key for a given row.
Parameters:
row - the row index (zero based).
Returns:
The row index.

getRowKeys

public List getRowKeys()
Returns the row keys.
Returns:
The row keys (never null).

hashCode

public int hashCode()
Returns a hashcode for this object.
Returns:
A hashcode.

removeColumn

public void removeColumn(Comparable columnKey)
Removes a column.
Parameters:
columnKey - the column key.

removeColumn

public void removeColumn(int columnIndex)
Removes a column.
Parameters:
columnIndex - the column index.

removeObject

public void removeObject(Comparable rowKey,
                         Comparable columnKey)
Removes an object.
Parameters:
rowKey - the row key.
columnKey - the column key.

removeRow

public void removeRow(Comparable rowKey)
Removes a row.
Parameters:
rowKey - the row key.

removeRow

public void removeRow(int rowIndex)
Removes a row.
Parameters:
rowIndex - the row index.

setObject

public void setObject(Object object,
                      Comparable rowKey,
                      Comparable columnKey)
Adds or updates an object.
Parameters:
object - the object.
rowKey - the row key.
columnKey - the column key.

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