IndirectContainer (EclipseLink 2.7.15, API Reference)

All Known Subinterfaces:

IndirectCollection

All Known Implementing Classes:

IndirectList, IndirectMap, IndirectSet
```
public interface IndirectContainer
```
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

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`ValueHolderInterface`	`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 valueHolder)`	PUBLIC: Set the valueHolder.

- Method Detail
  - getValueHolder
```
ValueHolderInterface 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 valueHolder)
```
    PUBLIC: Set the valueHolder. This is used by the indirection policy to build the UOW clone of the container.