com.healthmarketscience.jackcess.impl

Class ColumnImpl.AutoNumberGenerator

java.lang.Object

com.healthmarketscience.jackcess.impl.ColumnImpl.AutoNumberGenerator

Direct Known Subclasses:

ColumnImpl.ComplexTypeAutoNumberGenerator, ColumnImpl.GuidAutoNumberGenerator, ColumnImpl.LongAutoNumberGenerator, ColumnImpl.UnsupportedAutoNumberGenerator

Enclosing class:

ColumnImpl

public abstract class ColumnImpl.AutoNumberGenerator
extends java.lang.Object

Base class for the supported autonumber types.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AutoNumberGenerator()

Method Summary

Modifier and Type	Method and Description
abstract java.lang.Object	getLast() Returns the last autonumber generated by this generator.
abstract java.lang.Object	getNext(TableImpl.WriteRowState writeRowState) Returns the next autonumber for this generator.
abstract DataType	getType() Returns the type of values generated by this generator.
abstract java.lang.Object	handleInsert(TableImpl.WriteRowState writeRowState, java.lang.Object inRowValue) Returns a valid autonumber for this generator.
abstract void	restoreLast(java.lang.Object last) Restores a previous autonumber generated by this generator.

Methods inherited from class java.lang.Object

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

Constructor Detail

AutoNumberGenerator

protected AutoNumberGenerator()

Method Detail

getLast

public abstract java.lang.Object getLast()

Returns the last autonumber generated by this generator. Only valid after a call to Table.addRow(java.lang.Object...), otherwise undefined.

getNext

public abstract java.lang.Object getNext(TableImpl.WriteRowState writeRowState)

Returns the next autonumber for this generator.

Warning, calling this externally will result in this value being "lost" for the table.

handleInsert

public abstract java.lang.Object handleInsert(TableImpl.WriteRowState writeRowState,
                                              java.lang.Object inRowValue)
                                       throws java.io.IOException

Returns a valid autonumber for this generator.

Warning, calling this externally may result in this value being "lost" for the table.

Throws:

java.io.IOException

restoreLast

public abstract void restoreLast(java.lang.Object last)

Restores a previous autonumber generated by this generator.

getType

public abstract DataType getType()

Returns the type of values generated by this generator.