org.eclipse.persistence.indirection

Interface IndirectContainer<C>

All Known Subinterfaces:

IndirectCollection<E,C>

All Known Implementing Classes:

IndirectList, IndirectMap, IndirectSet

public interface IndirectContainer<C>

Purpose: Define an interface for a Container that can also act as an EclipseLink "indirection" object; i.e. the Container will only read its contents from the database when necessary (typically, on receipt of the first Container-related message).

See Also:

TransparentIndirectionPolicy

Author:

Big Country

Since:

TOPLink/Java 2.5

Method Summary

Modifier and Type	Method and Description
ValueHolderInterface<C>	getValueHolder() PUBLIC: This is used by the indirection policy to build the UOW clone of the container.
boolean	isInstantiated() PUBLIC: Return whether the contents have been read from the database.
void	setValueHolder(ValueHolderInterface<C> valueHolder) PUBLIC: Set the valueHolder.

Method Detail

getValueHolder

ValueHolderInterface<C> getValueHolder()

PUBLIC: This is used by the indirection policy to build the UOW clone of the container.

Returns:

org.eclipse.persistence.indirection.ValueHolderInterface A representation of the valueholder * which this container uses

isInstantiated

boolean isInstantiated()

PUBLIC: Return whether the contents have been read from the database. This is used periodically by the indirection policy to determine whether to trigger the database read.

setValueHolder

void setValueHolder(ValueHolderInterface<C> valueHolder)

PUBLIC: Set the valueHolder. This is used by the indirection policy to build the UOW clone of the container.