com.holonplatform.vaadin.data

Interface ItemDataProvider<ITEM>

Type Parameters:

ITEM - Item data type

All Superinterfaces:

ItemSetCounter, ItemSetLoader<ITEM>, Serializable

public interface ItemDataProvider<ITEM>
extends ItemSetCounter, ItemSetLoader<ITEM>

Iterface to load items data from a data source.

Since:

5.0.0

Method Summary

Modifier and Type	Method and Description
static <T,ITEM> ItemDataProvider<T>	convert(ItemDataProvider<ITEM> provider, Function<ITEM,T> converter) Create a new ItemDataProvider which wraps a concrete data provider and converts items into a different type using a converter function.
static <T> ItemDataProvider<T>	create(com.holonplatform.core.datastore.Datastore datastore, com.holonplatform.core.datastore.DataTarget<?> target, Class<T> beanClass) Construct a ItemDataProvider using a Datastore and given beanClass as item type.
static <T> ItemDataProvider<T>	create(com.holonplatform.core.datastore.Datastore datastore, com.holonplatform.core.datastore.DataTarget<?> target, Class<T> beanClass, com.holonplatform.core.query.QueryConfigurationProvider... queryConfigurationProviders) Construct a ItemDataProvider using a Datastore and given beanClass as item type.
static ItemDataProvider<com.holonplatform.core.property.PropertyBox>	create(com.holonplatform.core.datastore.Datastore datastore, com.holonplatform.core.datastore.DataTarget<?> target, com.holonplatform.core.property.PropertySet<?> propertySet) Construct a ItemDataProvider using a Datastore.
static ItemDataProvider<com.holonplatform.core.property.PropertyBox>	create(com.holonplatform.core.datastore.Datastore datastore, com.holonplatform.core.datastore.DataTarget<?> target, com.holonplatform.core.property.PropertySet<?> propertySet, com.holonplatform.core.query.QueryConfigurationProvider... queryConfigurationProviders) Construct a ItemDataProvider using a Datastore.
static <ITEM> ItemDataProvider<ITEM>	create(ItemSetCounter counter, ItemSetLoader<ITEM> loader) Create an ItemDataProvider using given operations.

Methods inherited from interface com.holonplatform.vaadin.data.ItemSetCounter

size

Methods inherited from interface com.holonplatform.vaadin.data.ItemSetLoader

load

Method Detail

create

static <ITEM> ItemDataProvider<ITEM> create(ItemSetCounter counter,
                                            ItemSetLoader<ITEM> loader)

Create an ItemDataProvider using given operations.

Type Parameters:

ITEM - Item data type

Parameters:

counter - Items counter (not null)

loader - Items loader (not null)

Returns:

A new ItemDataProvider instance

create

static ItemDataProvider<com.holonplatform.core.property.PropertyBox> create(com.holonplatform.core.datastore.Datastore datastore,
                                                                            com.holonplatform.core.datastore.DataTarget<?> target,
                                                                            com.holonplatform.core.property.PropertySet<?> propertySet)

Construct a ItemDataProvider using a Datastore.

Parameters:

datastore - Datastore to use (not null)

target - Data target (not null)

propertySet - Property set to load

Returns:

the ItemDataProvider instance

create

static ItemDataProvider<com.holonplatform.core.property.PropertyBox> create(com.holonplatform.core.datastore.Datastore datastore,
                                                                            com.holonplatform.core.datastore.DataTarget<?> target,
                                                                            com.holonplatform.core.property.PropertySet<?> propertySet,
                                                                            com.holonplatform.core.query.QueryConfigurationProvider... queryConfigurationProviders)

Construct a ItemDataProvider using a Datastore.

Parameters:

datastore - Datastore to use (not null)

target - Data target (not null)

propertySet - Property set to load

queryConfigurationProviders - Optional additional QueryConfigurationProviders

Returns:

the ItemDataProvider instance

create

static <T> ItemDataProvider<T> create(com.holonplatform.core.datastore.Datastore datastore,
                                      com.holonplatform.core.datastore.DataTarget<?> target,
                                      Class<T> beanClass)

Construct a ItemDataProvider using a Datastore and given beanClass as item type.

The query projection will be configured using the bean class property names and the query results will be obtained as instances of given bean class. The default BeanIntrospector will be used to inspect bean class properties.

Type Parameters:

T - Bean type

Parameters:

datastore - Datastore to use (not null)

target - Data target (not null)

beanClass - Item bean type (not null)

Returns:

the ItemDataProvider instance

create

static <T> ItemDataProvider<T> create(com.holonplatform.core.datastore.Datastore datastore,
                                      com.holonplatform.core.datastore.DataTarget<?> target,
                                      Class<T> beanClass,
                                      com.holonplatform.core.query.QueryConfigurationProvider... queryConfigurationProviders)

Construct a ItemDataProvider using a Datastore and given beanClass as item type.

The query projection will be configured using the bean class property names and the query results will be obtained as instances of given bean class. The default BeanIntrospector will be used to inspect bean class properties.

Type Parameters:

T - Bean type

Parameters:

datastore - Datastore to use (not null)

target - Data target (not null)

beanClass - Item bean type (not null)

queryConfigurationProviders - Optional additional QueryConfigurationProviders

Returns:

the ItemDataProvider instance

convert

static <T,ITEM> ItemDataProvider<T> convert(ItemDataProvider<ITEM> provider,
                                            Function<ITEM,T> converter)

Create a new ItemDataProvider which wraps a concrete data provider and converts items into a different type using a converter function.

Type Parameters:

ITEM - Item type

T - Converted type

Parameters:

provider - Concrete data privider (not null)

converter - Converter function (not null)

Returns:

the data provider wrapper