TemporaryDatabase
Class TableData

java.lang.Object
  |
  +--TemporaryDatabase.TableData

class TableData

extends Object

Temporary (in memory) database table.

Author:

chris.studholme@utoronto.ca

Field Summary

ArrayList	columns
String	name
private int	nrows
private int	ref_count
private ArrayList	rows
long	sig

Constructor Summary

TableData(String name)

Method Summary

int	access()
int	add() Add a new row.
Object[]	get(int rowid) Get a row of data.
int	maxStringLength(int index)
void	release() Release access to table data.
void	remove(int rowid) Delete a row of data.
long	size()

Methods inherited from class java.lang.Object

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

Field Detail

name

public String name

columns

public ArrayList columns

rows

private ArrayList rows

nrows

private int nrows

sig

public long sig

ref_count

private int ref_count

Constructor Detail

TableData

public TableData(String name)

Method Detail

access

public int access()

release

public void release()

Release access to table data.

size

public long size()

add

public int add()

Add a new row. The new row is added to the end of the table and the number of row addresses (after adding the row) is returned. The new row can then be accessed with get(returned_value-1).

Returns:

number of row addresses in table

remove

public void remove(int rowid)

Delete a row of data.

get

public Object[] get(int rowid)

Get a row of data. If the row referenced by rowid has been removed, null will be returned.

Returns:

column array or null if row has been removed

maxStringLength

public int maxStringLength(int index)