Package io.jmix.core

Class FluentLoader<E>

java.lang.Object

io.jmix.core.FluentLoader<E>

@Component("core_FluentLoader")
@Scope("prototype")
public class FluentLoader<E>
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	FluentLoader.ByCondition<E>
static class	FluentLoader.ById<E>
static class	FluentLoader.ByIds<E>
static class	FluentLoader.ByQuery<E>

Field Summary

Fields

Modifier and Type	Field	Description
protected org.springframework.context.ApplicationContext	applicationContext

Constructor Summary

Constructors

Constructor	Description
FluentLoader(Class<E> entityClass)

Method Summary

Modifier and Type	Method	Description
FluentLoader.ByCondition<E>	all()	Load all instances.
FluentLoader.ByCondition<E>	condition(Condition condition)	Load by condition.
protected void	createFetchPlanBuilder()
FluentLoader.ById<E>	id(Object id)	Load by entity identifier.
FluentLoader.ByIds<E>	ids(Object... ids)	Load by array of entity identifiers.
FluentLoader.ByIds<E>	ids(Collection ids)	Load by collection of entity identifiers.
protected LoadContext<E>	instantiateLoadContext(MetaClass metaClass)
FluentLoader.ByQuery<E>	query(String queryString)	Load by query.
FluentLoader.ByQuery<E>	query(String queryString, Object... parameters)	Load by query with positional parameters (e.g.
void	setDataManager(UnconstrainedDataManager dataManager)

Methods inherited from class java.lang.Object

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

Field Details

applicationContext

@Autowired
protected org.springframework.context.ApplicationContext applicationContext

Constructor Details

FluentLoader

public FluentLoader(Class<E> entityClass)

Method Details

setDataManager

public void setDataManager(UnconstrainedDataManager dataManager)

instantiateLoadContext

protected LoadContext<E> instantiateLoadContext(MetaClass metaClass)

createFetchPlanBuilder

protected void createFetchPlanBuilder()

id

public FluentLoader.ById<E> id(Object id)

Load by entity identifier.

For example:

 Customer customer = dataManager.load(Customer.class)
          .id(someId)
          .one();

 Optional<Customer> customer = dataManager.load(Customer.class)
          .id(someId)
          .optional();
 

ids

public FluentLoader.ByIds<E> ids(Object... ids)

Load by array of entity identifiers.

For example:

 List<Customer> customers = dataManager.load(Customer.class)
          .ids(id1, id2)
          .list();
 

Entities in the result list have the same order as provided identifiers. If an instance from the list cannot be loaded for some reason, the whole operation fails with EntityAccessException.

ids

public FluentLoader.ByIds<E> ids(Collection ids)

Load by collection of entity identifiers.

For example:

 List<Customer> customers = dataManager.load(Customer.class)
          .ids(idCollection)
          .list();
 

Entities in the result list have the same order as provided identifiers. If an instance from the list cannot be loaded for some reason, the whole operation fails with EntityAccessException.

query

public FluentLoader.ByQuery<E> query(String queryString)

Load by query.

For example:

 List<Customer> customers = dataManager.load(Customer.class)
      .query("select c from Customer c where c.name like :name")
      .parameter("name", "(?i)%doe%") // case-insensitive substring search
      .maxResults(100)
      .list();
 

See Also:

• query(String, Object...)

query

public FluentLoader.ByQuery<E> query(String queryString,
 Object... parameters)

Load by query with positional parameters (e.g. "e.name = ?1 and e.status = ?2").

Always use e as the entity alias.

For example:

 List<Customer> customers = dataManager.load(Customer.class)
      .query("e.name like ?1", "(?i)%doe%") // case-insensitive substring search
      .maxResults(100)
      .list();
 

condition

public FluentLoader.ByCondition<E> condition(Condition condition)

Load by condition.

For example:

 List<Customer> customers = dataManager.load(Customer.class)
      .condition(PropertyCondition.contains("name", "(?i)%doe%")) // case-insensitive substring search
      .maxResults(100)
      .list();
 

all

public FluentLoader.ByCondition<E> all()

Load all instances.

For example:

 List<Customer> customers = dataManager.load(Customer.class)
      .all()
      .maxResults(100)
      .list();