net.databinder.models
Class SublistProjectionModel

java.lang.Object
  org.apache.wicket.model.AbstractReadOnlyModel
      org.apache.wicket.model.LoadableDetachableModel
          net.databinder.models.SublistProjectionModel

All Implemented Interfaces:

java.io.Serializable, org.apache.wicket.IClusterable, org.apache.wicket.model.IDetachable, org.apache.wicket.model.IModel

Direct Known Subclasses:

SublistProjectionModel.Chunked

public abstract class SublistProjectionModel
extends org.apache.wicket.model.LoadableDetachableModel

Projects a single list into multiple, arbitrarily transformed sublists without replicating the list structure. A parent list containing sublists is the object wrapped in this model, while the master list model passed in is held and used internally.

If you need to detach the master list, detach this model and the command will be passed to the contained master list. Any action that changes the size of the master list must also detach this model so it can recalculate the sublist count.

Author:

Nathan Hamblen

See Also:

Serialized Form

Nested Class Summary

static class	SublistProjectionModel.Chunked Breaks the parent list into chunks of the requested size, in the same order as the parent list.
protected class	SublistProjectionModel.ProjectedSublist This is a virtual list, a projection of the master list.
static class	SublistProjectionModel.Transposed Transposes rows and columns so the list runs top to bottom rather than left to right.

Constructor Summary

SublistProjectionModel(org.apache.wicket.model.IModel master)

Method Summary

protected java.util.List	getMasterList()
protected abstract int	getParentSize()
protected abstract int	getSize(int parentIdx)
protected java.util.List<java.util.List>	load()
protected void	onDetach() Detach master list.
protected abstract int	transform(int parentIdx, int sublistIdx)

Methods inherited from class org.apache.wicket.model.LoadableDetachableModel

detach, getObject, isAttached, onAttach, toString

Methods inherited from class org.apache.wicket.model.AbstractReadOnlyModel

getObject, setObject

Methods inherited from class java.lang.Object

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

Constructor Detail

SublistProjectionModel

public SublistProjectionModel(org.apache.wicket.model.IModel master)

Method Detail

getParentSize

protected abstract int getParentSize()

Returns:

number of sublists

transform

protected abstract int transform(int parentIdx,
                                 int sublistIdx)

Returns:

index of master list mapped to parameters

getSize

protected abstract int getSize(int parentIdx)

Returns:

size sublist at given index

getMasterList

protected java.util.List getMasterList()

load

protected java.util.List<java.util.List> load()

Specified by:

load in class org.apache.wicket.model.LoadableDetachableModel

onDetach

protected void onDetach()

Detach master list.

Overrides:

onDetach in class org.apache.wicket.model.LoadableDetachableModel