com.limegroup.gnutella.gui.tables
Class HashBasedDataLineModel

java.lang.Object
  javax.swing.table.AbstractTableModel
      com.limegroup.gnutella.gui.tables.BasicDataLineModel
          com.limegroup.gnutella.gui.tables.HashBasedDataLineModel

All Implemented Interfaces:

java.util.Comparator, DataLineModel, java.io.Serializable, javax.swing.table.TableModel

public class HashBasedDataLineModel

extends BasicDataLineModel

This class extends the BasicDataLineModel by storing the 'initializing' object in a HashMap. Tables which need quick access to rows based on the initializing object should use this as the underlying TableModel.

See Also:

Serialized Form

Field Summary

protected java.util.HashMap

_indexes HashMap for quick access to indexes.

Fields inherited from class com.limegroup.gnutella.gui.tables.BasicDataLineModel

_isSorted

Fields inherited from class javax.swing.table.AbstractTableModel

listenerList

Constructor Summary

HashBasedDataLineModel(java.lang.Class dataLineClass)
Constructor -- this HashBasedDataLineModel supports the the single param constructor of BasicDataLineModel.

Method Summary

int	add(DataLine dl, int row) Override of the add function so we can maintain a HashMap for quick access to the row an object is in.
void	clear() Overrides the default clear to erase the indexes HashMap.
boolean	contains(java.lang.Object o) Overrides the default contains to use the HashMap instead of a linear search.
protected int	forceAdd(DataLine dl, int row) Utility function that immediately calls super.add(dl, row) without checking if it exists.
int	getRow(java.lang.Object o) Overrides the default getRow to look in the HashMap instead of a linear search.
void	initializeObjectChanged(java.lang.Object old, java.lang.Object now) Notifies the model that the initialize object of a line has changed.
void	remapIndexes(int start) Remaps the indexes, starting at 'start' and going to the end of the list.
void	remove(int row) Overrides the default remove to remove the index from the hashmap.
void	resort() Overrides the default sort to maintain the indexes HashMap, according to the current sort column and order.

Methods inherited from class com.limegroup.gnutella.gui.tables.BasicDataLineModel

add, add, add, addSorted, addSorted, compare, contains, createDataLine, get, get, get, getColumnClass, getColumnCount, getColumnId, getColumnName, getNewDataLine, getRow, getRow, getRowCount, getSortColumn, getSortedPosition, getTableColumn, getToolTipArray, getValueAt, isSortAscending, isSorted, needsResort, refresh, remove, remove, setValueAt, sort, update

Methods inherited from class javax.swing.table.AbstractTableModel

addTableModelListener, findColumn, fireTableCellUpdated, fireTableChanged, fireTableDataChanged, fireTableRowsDeleted, fireTableRowsInserted, fireTableRowsUpdated, fireTableStructureChanged, getListeners, getTableModelListeners, isCellEditable, removeTableModelListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals

Methods inherited from interface javax.swing.table.TableModel

addTableModelListener, isCellEditable, removeTableModelListener

Field Detail

_indexes

protected java.util.HashMap _indexes

HashMap for quick access to indexes.

Constructor Detail

HashBasedDataLineModel

public HashBasedDataLineModel(java.lang.Class dataLineClass)

Constructor -- this HashBasedDataLineModel supports the the single param constructor of BasicDataLineModel.

Method Detail

forceAdd

protected int forceAdd(DataLine dl,
                       int row)

Utility function that immediately calls super.add(dl, row) without checking if it exists. Useful for extending classes that override add(DataLine, row).

add

public int add(DataLine dl,
               int row)

Override of the add function so we can maintain a HashMap for quick access to the row an object is in.

Specified by:

add in interface DataLineModel

Overrides:

add in class BasicDataLineModel

remove

public void remove(int row)

Overrides the default remove to remove the index from the hashmap.

Specified by:

remove in interface DataLineModel

Overrides:

remove in class BasicDataLineModel

Parameters:

row - the index of the row to remove.

getRow

public int getRow(java.lang.Object o)

Overrides the default getRow to look in the HashMap instead of a linear search.

Specified by:

getRow in interface DataLineModel

Overrides:

getRow in class BasicDataLineModel

Parameters:

o - the object whose index we want.

Returns:

the index of the DataLine initialized by object o.

Throws:

java.lang.ArrayIndexOutOfBoundsException - if no dataline was initialized by o.

resort

public void resort()

Overrides the default sort to maintain the indexes HashMap, according to the current sort column and order.

Specified by:

resort in interface DataLineModel

Overrides:

resort in class BasicDataLineModel

contains

public boolean contains(java.lang.Object o)

Overrides the default contains to use the HashMap instead of a linear search.

Specified by:

contains in interface DataLineModel

Overrides:

contains in class BasicDataLineModel

Parameters:

o - The object which initialized a DataLine.

Returns:

true if the List contains a DataLine that was initialized by Object o.

clear

public void clear()

Overrides the default clear to erase the indexes HashMap.

Specified by:

clear in interface DataLineModel

Overrides:

clear in class BasicDataLineModel

remapIndexes

public void remapIndexes(int start)

Remaps the indexes, starting at 'start' and going to the end of the list. This is needed for when rows are added to the middle of the list to maintain the correct rows per objects.

initializeObjectChanged

public void initializeObjectChanged(java.lang.Object old,
                                    java.lang.Object now)

Notifies the model that the initialize object of a line has changed.