de.hybris.platform.commerceservices.order.strategies.impl

Class DefaultEntryMergeStrategy

java.lang.Object

de.hybris.platform.commerceservices.order.strategies.impl.DefaultEntryMergeStrategy

All Implemented Interfaces:

EntryMergeStrategy

public class DefaultEntryMergeStrategy
extends java.lang.Object
implements EntryMergeStrategy

Default implementation of EntryMergeStrategy.

Any module can register a filter of type EntryMergeFilter. The filter can return FALSE to deny merging particular entry with given CommerceCartParameter.

Also it is possible to change order of preference for input entries.

See Also:

DefaultCommerceAddToCartStrategy

Constructor Summary

Constructors

Constructor and Description
DefaultEntryMergeStrategy()

Method Summary

Modifier and Type	Method and Description
protected java.lang.Boolean	canMerge(AbstractOrderEntryModel mergeCandidate, AbstractOrderEntryModel newEntry) This method determines whether given entry can be merged with the given entry creation candidate.
protected java.util.List<EntryMergeFilter>	getEntryMergeFilters()
protected java.util.Comparator<AbstractOrderEntryModel>	getEntryModelComparator()
AbstractOrderEntryModel	getEntryToMerge(java.util.List<AbstractOrderEntryModel> entries, AbstractOrderEntryModel newEntry) Returns cart entry can be updated instead of creation of separate newEntry.
void	setEntryMergeFilters(java.util.List<EntryMergeFilter> items) Filters to reject entities that can not be merged.
void	setEntryModelComparator(java.util.Comparator<AbstractOrderEntryModel> entryModelComparator) The comparator can be overridden to change order of preference for entries.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultEntryMergeStrategy

public DefaultEntryMergeStrategy()

Method Detail

getEntryToMerge

public AbstractOrderEntryModel getEntryToMerge(java.util.List<AbstractOrderEntryModel> entries,
                                               AbstractOrderEntryModel newEntry)

Description copied from interface: EntryMergeStrategy

Returns cart entry can be updated instead of creation of separate newEntry.

Specified by:

getEntryToMerge in interface EntryMergeStrategy

Parameters:

entries - list of existing entries

newEntry - the merge candidate (can be an item of entries

Returns:

merge target (null if no applicable entries found)

canMerge

protected java.lang.Boolean canMerge(AbstractOrderEntryModel mergeCandidate,
                                     AbstractOrderEntryModel newEntry)

This method determines whether given entry can be merged with the given entry creation candidate.

Parameters:

mergeCandidate - entry that is supposed to be merge acceptor

newEntry - entry to find merge target for

Returns:

Boolean.FALSE to disable merge of newEntry to mergeCandidate

getEntryMergeFilters

protected java.util.List<EntryMergeFilter> getEntryMergeFilters()

setEntryMergeFilters

public void setEntryMergeFilters(java.util.List<EntryMergeFilter> items)

Filters to reject entities that can not be merged.

The filters are applied in their natural order, so it worth to put the filters that are fast and likely return Boolean.FALSE on top of the list. It will speed up the filtration.

Parameters:

items - new list of filters

See Also:

ListMergeDirective

getEntryModelComparator

protected java.util.Comparator<AbstractOrderEntryModel> getEntryModelComparator()

setEntryModelComparator

public void setEntryModelComparator(java.util.Comparator<AbstractOrderEntryModel> entryModelComparator)

The comparator can be overridden to change order of preference for entries. this#getEntryToMerge(List, CommerceCartParameter) returns first suitable entry of the resulting list.

The default implementation does not change order of entries.

Parameters:

entryModelComparator - new AbstractOrderEntryModel comparator