ilog.cpl.util

Class IlpStaticExpansionStrategy

java.lang.Object

ilog.cpl.util.IlpStaticExpansionStrategy

All Implemented Interfaces:

IlpExpansionStrategy

public class IlpStaticExpansionStrategy
extends Object
implements IlpExpansionStrategy

This class is an expansion strategy suitable when no load on demand is necessary.

Since:

JTGO 8.5

See Also:

STATIC

Field Summary

Fields

Modifier and Type	Field and Description
static IlpExpansionStrategy	STATIC This is an expansion strategy suitable when no load on demand is necessary.

Constructor Summary

Constructors

Constructor and Description
IlpStaticExpansionStrategy()

Method Summary

Modifier and Type	Method and Description
boolean	areChildrenLoaded(IlpRepresentationObject representation) Indicates whether the child objects are already loaded with this expansion strategy.
boolean	isLoadingOnDemand() Indicates whether this strategy enables loading on demand.
void	loadChildren(IlpRepresentationObject representation) Loads the children objects of the given representation object so that they are added to the model and are visible to the attached views.
boolean	mayHaveChild(IlpRepresentationObject representation) Indicates whether the parameter may have children.
void	releaseChildren(IlpRepresentationObject representation) Signals that the model and the attached views do not need the child objects of the given object anymore.

Methods inherited from class java.lang.Object

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

Field Detail

STATIC

public static final IlpExpansionStrategy STATIC

This is an expansion strategy suitable when no load on demand is necessary. It assumes the child objects are already known to the representation object before the first loadChildren call.

Constructor Detail

IlpStaticExpansionStrategy

public IlpStaticExpansionStrategy()

Method Detail

loadChildren

public void loadChildren(IlpRepresentationObject representation)

Description copied from interface: IlpExpansionStrategy

Loads the children objects of the given representation object so that they are added to the model and are visible to the attached views.

This method should load all child objects that are currently available in the back-end. When loading child objects asynchronously, they should all be loaded at once.

This method may be called more than once to a certain representation object.

Specified by:

loadChildren in interface IlpExpansionStrategy

Parameters:

representation - The representation object with children that are being queried.

releaseChildren

public void releaseChildren(IlpRepresentationObject representation)

Description copied from interface: IlpExpansionStrategy

Signals that the model and the attached views do not need the child objects of the given object anymore. The child objects can be removed (but need not be) from working memory.

This method may be called more than once to a certain representation object.

Specified by:

releaseChildren in interface IlpExpansionStrategy

Parameters:

representation - The representation object with children that are being released.

areChildrenLoaded

public boolean areChildrenLoaded(IlpRepresentationObject representation)

Description copied from interface: IlpExpansionStrategy

Indicates whether the child objects are already loaded with this expansion strategy. This method should return true if the child objects have been queried at least once. This method is used to:

• Indicate whether child objects can be queried in the representation object.
• Avoid duplicate calls to loadChildren.

Specified by:

areChildrenLoaded in interface IlpExpansionStrategy

Parameters:

representation - The representation object.

See Also:

IlpExpansionStrategy.loadChildren(ilog.cpl.model.IlpRepresentationObject)

isLoadingOnDemand

public boolean isLoadingOnDemand()

Description copied from interface: IlpExpansionStrategy

Indicates whether this strategy enables loading on demand.

Specified by:

isLoadingOnDemand in interface IlpExpansionStrategy

mayHaveChild

public boolean mayHaveChild(IlpRepresentationObject representation)

Description copied from interface: IlpExpansionStrategy

Indicates whether the parameter may have children. Expansion strategies may implement this method to prevent that a container object without children appears as expandable. Most implementations will just return true.

Specified by:

mayHaveChild in interface IlpExpansionStrategy

Parameters:

representation - Representation object