com.holonplatform.vaadin.data

Interface ItemSetCounter

All Superinterfaces:

Serializable

All Known Subinterfaces:

ItemDataProvider<ITEM>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface ItemSetCounter
extends Serializable

Data interface to obtain the size of an item set.

Since:

5.0.0

Method Summary

Modifier and Type	Method and Description
long	size(com.holonplatform.core.query.QueryConfigurationProvider configuration) Get the data source item set size (number of items) according to given configuration.

Method Detail

size

long size(com.holonplatform.core.query.QueryConfigurationProvider configuration)
   throws com.holonplatform.core.exceptions.DataAccessException

Get the data source item set size (number of items) according to given configuration.

Parameters:

configuration - Query configuration

Returns:

Item set size (number of items), or 0 if no item available

Throws:

com.holonplatform.core.exceptions.DataAccessException - Error accessing underlying data store