net.spy.db
Class AbstractSavable

java.lang.Object
  net.spy.SpyObject
      net.spy.db.AbstractSavable

All Implemented Interfaces:

Savable, TransactionListener

Direct Known Subclasses:

CollectionSavable

public abstract class AbstractSavable
extends SpyObject
implements Savable, TransactionListener

Abstract implementation of Savable.

Constructor Summary

protected

AbstractSavable() Get an instance of AbstractSavable.

Method Summary

protected void	finalize() If this object is still dirty during finalization, log it.
Collection<? extends Savable>	getPostSavables(SaveContext context) Get the dependent objects for this Savable.
Collection<? extends Savable>	getPreSavables(SaveContext context) Get the objects that need to be saved before this object.
boolean	isModified() Indicate whether this object has been modified.
boolean	isNew() Indicate whether this object is new.
void	modify() Mark this AbstractSavable as modified.
protected void	setModified(boolean to) Set the ``modified'' flag for this object.
protected void	setNew(boolean to) Set the ``new'' flag for this object.
void	transactionCommited() Whenever this transaction is committed, automatically flag it as saved.

Methods inherited from class net.spy.SpyObject

getLogger

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.spy.db.Savable

save

Constructor Detail

AbstractSavable

protected AbstractSavable()

Get an instance of AbstractSavable. An object instantiated with this constructor will have the new flag set. If this is not desirable, unset it.

Method Detail

isNew

public boolean isNew()

Indicate whether this object is new.

Specified by:

isNew in interface Savable

isModified

public boolean isModified()

Indicate whether this object has been modified.

Specified by:

isModified in interface Savable

setNew

protected void setNew(boolean to)

Set the ``new'' flag for this object.

Parameters:

to - the new value of the new flag

setModified

protected void setModified(boolean to)

Set the ``modified'' flag for this object.

Parameters:

to - the new value for the modified flag

modify

public void modify()

Mark this AbstractSavable as modified.

getPreSavables

public Collection<? extends Savable> getPreSavables(SaveContext context)

Get the objects that need to be saved before this object. The default implementation returns null, indicating that there are no prerequisite objects.

Specified by:

getPreSavables in interface Savable

Parameters:

context - SaveContext being used in this Saver session

Returns:

a collection of objects this SavableNode depends on

getPostSavables

public Collection<? extends Savable> getPostSavables(SaveContext context)

Get the dependent objects for this Savable. The default implementation returns null, indicating that there are no dependent objects.

Specified by:

getPostSavables in interface Savable

Parameters:

context - SaveContext being used in this Saver session

Returns:

a collection of objects this SavableNode depends on

transactionCommited

public void transactionCommited()

Whenever this transaction is committed, automatically flag it as saved.

Specified by:

transactionCommited in interface TransactionListener

finalize

protected void finalize()
                 throws Throwable

If this object is still dirty during finalization, log it.

Overrides:

finalize in class Object

Throws:

Throwable