com.whitestein.lsps.vaadin.ui.components.table.dataset

Class GroupingDataset.LineResolvingGroup

java.lang.Object

com.whitestein.lsps.vaadin.ui.components.table.dataset.GroupingDataset.Group

com.whitestein.lsps.vaadin.ui.components.table.dataset.GroupingDataset.LineResolvingGroup

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

GroupingDataset.ClosureGroup, GroupingDataset.PropertyGroup

Enclosing class:

GroupingDataset

public abstract static class GroupingDataset.LineResolvingGroup
extends GroupingDataset.Group

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
LineResolvingGroup()

Method Summary

Modifier and Type	Method and Description
protected abstract Object	getGroupingValue(Object record)
LinkedHashMap<Object,List<Object>>	group(List<Object> records) Groups given list of records by some value, e.g.

Methods inherited from class java.lang.Object

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

Constructor Detail

LineResolvingGroup

public LineResolvingGroup()

Method Detail

group

public final LinkedHashMap<Object,List<Object>> group(List<Object> records)

Description copied from class: GroupingDataset.Group

Groups given list of records by some value, e.g. by a record property value. All input records must be present in the output map - no records may be filtered out and no syntetic records may be created.

Specified by:

group in class GroupingDataset.Group

Parameters:

records - a list of records, never null, may be empty.

Returns:

a map, mapping the grouped value to a list of records. The records should appear in the same order as they were present in the records list. Also, the map keys should be ordered the same way. Must never return null, may return an empty map. May contain null key, therefore ImmutableSortedMap cannot be used.

getGroupingValue

protected abstract Object getGroupingValue(Object record)