HHH-11186 - Add examples for all Hibernate annotations

Document more annotations:

- @FilterJoinTable
This commit is contained in:
Vlad Mihalcea 2016-11-25 15:50:02 +02:00
parent 91ebadb209
commit 8f3d58601d
5 changed files with 334 additions and 1 deletions

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@ -789,11 +789,14 @@ See the <<chapters/domain/basic_types.adoc#mapping-filter-example,Filter mapping
==== `@FilterDefs` ==== `@FilterDefs`
The https://docs.jboss.org/hibernate/orm/{majorMinorVersion}/javadocs/org/hibernate/annotations/FilterDefs.html[`@FilterDefs`] annotation is used to group multiple <<annotations-hibernate-filterdef>> annotations. The https://docs.jboss.org/hibernate/orm/{majorMinorVersion}/javadocs/org/hibernate/annotations/FilterDefs.html[`@FilterDefs`] annotation is used to group multiple <<annotations-hibernate-filterdef>> annotations.
[[annotations-hibernate-filterjointable]] [[annotations-hibernate-filterjointable]]
==== `@FilterJoinTable` ==== `@FilterJoinTable`
The https://docs.jboss.org/hibernate/orm/{majorMinorVersion}/javadocs/org/hibernate/annotations/FilterJoinTable.html[`@FilterJoinTable`] annotation is used to add `@Filter` capabilities to a join table collection. The https://docs.jboss.org/hibernate/orm/{majorMinorVersion}/javadocs/org/hibernate/annotations/FilterJoinTable.html[`@FilterJoinTable`] annotation is used to add `@Filter` capabilities to a join table collection.
See the <<chapters/domain/basic_types.adoc#mapping-column-filter-join-table,FilterJoinTable mapping>> section for more info.
[[annotations-hibernate-filterjointables]] [[annotations-hibernate-filterjointables]]
==== `@FilterJoinTables` ==== `@FilterJoinTables`

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@ -1514,7 +1514,7 @@ include::{extrasdir}/basic/mapping-filter-entity-query-example.sql[]
---- ----
==== ====
Jut like with entities, collections can be filtered as well, but only if the filter is explicilty enabled on the currently running Hibernate `Session`. Just like with entities, collections can be filtered as well, but only if the filter is explicitly enabled on the currently running Hibernate `Session`.
This way, when fetching the `accounts` collections, Hibernate is going to apply the `@Filter` clause filtering criteria to the associated collection entries. This way, when fetching the `accounts` collections, Hibernate is going to apply the `@Filter` clause filtering criteria to the associated collection entries.
[[mapping-filter-collection-query-example]] [[mapping-filter-collection-query-example]]
@ -1547,6 +1547,56 @@ Afterward, every other Session will get the filtered collection from the cache,
For this reason, the second-level collection cache is limited to storing whole collections, and not subsets. For this reason, the second-level collection cache is limited to storing whole collections, and not subsets.
==== ====
[[mapping-column-filter-join-table]]
==== @FilterJoinTable
When using the `@Filter` annotation with collections, the filtering is done against the child entries (entities or embeddables).
However, if you have a link table between the parent entity and the child table, then you need to use the `@FilterJoinTable` to filter child entries according to some column contained in the join table.
The `@FilterJoinTable` annotation can be, therefore, applied to a unidirectional `@OneToMany` collection as illustrate din the following mapping:
[[mapping-filter-join-table-example]]
.`@FilterJoinTable` mapping usage
====
[source, JAVA, indent=0]
----
include::{sourcedir}/basic/FilterJoinTableTest.java[tags=mapping-filter-join-table-example]
----
====
If the database contains the following entities:
[[mapping-filter-join-table-persistence-example]]
.Persisting an fetching entities with a `@FilterJoinTable` mapping
====
[source, JAVA, indent=0]
----
include::{sourcedir}/basic/FilterJoinTableTest.java[tags=mapping-filter-join-table-persistence-example]
----
[source, SQL, indent=0]
----
include::{extrasdir}/basic/mapping-filter-join-table-persistence-example.sql[]
----
====
The collections can be filtered if the associated filter is enabled on the currently running Hibernate `Session`.
This way, when fetching the `accounts` collections, Hibernate is going to apply the `@FilterJoinTable` clause filtering criteria to the associated collection entries.
[[mapping-filter-collection-query-example]]
.Traversing collections mapped with `@FilterJoinTable`
====
[source, JAVA, indent=0]
----
include::{sourcedir}/basic/FilterJoinTableTest.java[tags=mapping-filter-join-table-collection-query-example]
----
[source, SQL, indent=0]
----
include::{extrasdir}/basic/mapping-filter-join-table-collection-query-example.sql[]
----
====
[[mapping-column-any]] [[mapping-column-any]]
==== @Any mapping ==== @Any mapping

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@ -0,0 +1,41 @@
SELECT
ca.Client_id as Client_i1_2_0_,
ca.accounts_id as accounts2_2_0_,
ca.order_id as order_id3_0_,
a.id as id1_0_1_,
a.active as active2_0_1_,
a.amount as amount3_0_1_,
a.rate as rate4_0_1_,
a.account_type as account_5_0_1_
FROM
Client_Account ca
INNER JOIN
Account a
ON ca.accounts_id=a.id
WHERE
ca.Client_id = ?
-- binding parameter [1] as [BIGINT] - [1]
-- Activate filter [firstAccounts]
SELECT
ca.Client_id as Client_i1_2_0_,
ca.accounts_id as accounts2_2_0_,
ca.order_id as order_id3_0_,
a.id as id1_0_1_,
a.active as active2_0_1_,
a.amount as amount3_0_1_,
a.rate as rate4_0_1_,
a.account_type as account_5_0_1_
FROM
Client_Account ca
INNER JOIN
Account a
ON ca.accounts_id=a.id
WHERE
ca.order_id <= ?
AND ca.Client_id = ?
-- binding parameter [1] as [INTEGER] - [1]
-- binding parameter [2] as [BIGINT] - [1]

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@ -0,0 +1,23 @@
INSERT INTO Client (name, id)
VALUES ('John Doe', 1)
INSERT INTO Account (active, amount, client_id, rate, account_type, id)
VALUES (true, 5000.0, 1, 0.0125, 'CREDIT', 1)
INSERT INTO Account (active, amount, client_id, rate, account_type, id)
VALUES (false, 0.0, 1, 0.0105, 'DEBIT', 2)
INSERT INTO Account (active, amount, client_id, rate, account_type, id)
VALUES (true, 250.0, 1, 0.0105, 'DEBIT', 3)
INSERT INTO Client_Account (Client_id, order_id, accounts_id)
VALUES (1, 0, 1)
INSERT INTO Client_Account (Client_id, order_id, accounts_id)
VALUES (1, 0, 1)
INSERT INTO Client_Account (Client_id, order_id, accounts_id)
VALUES (1, 1, 2)
INSERT INTO Client_Account (Client_id, order_id, accounts_id)
VALUES (1, 2, 3)

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@ -0,0 +1,216 @@
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.userguide.mapping.basic;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.OrderColumn;
import org.hibernate.Session;
import org.hibernate.annotations.Filter;
import org.hibernate.annotations.FilterDef;
import org.hibernate.annotations.FilterJoinTable;
import org.hibernate.annotations.ParamDef;
import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
import org.junit.Test;
import org.jboss.logging.Logger;
import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
import static org.junit.Assert.assertEquals;
/**
* @author Vlad Mihalcea
*/
public class FilterJoinTableTest extends BaseEntityManagerFunctionalTestCase {
private static final Logger log = Logger.getLogger( FilterJoinTableTest.class );
@Override
protected Class<?>[] getAnnotatedClasses() {
return new Class<?>[] {
Client.class,
Account.class
};
}
@Test
public void testLifecycle() {
//tag::mapping-filter-join-table-persistence-example[]
doInJPA( this::entityManagerFactory, entityManager -> {
Client client = new Client();
client.setId( 1L );
client.setName( "John Doe" );
entityManager.persist( client );
Account account1 = new Account( );
account1.setId( 1L );
account1.setType( AccountType.CREDIT );
account1.setAmount( 5000d );
account1.setRate( 1.25 / 100 );
account1.setActive( true );
client.getAccounts().add( account1 );
entityManager.persist( account1 );
Account account2 = new Account( );
account2.setId( 2L );
account2.setType( AccountType.DEBIT );
account2.setAmount( 0d );
account2.setRate( 1.05 / 100 );
account2.setActive( false );
client.getAccounts().add( account2 );
entityManager.persist( account2 );
Account account3 = new Account( );
account3.setType( AccountType.DEBIT );
account3.setId( 3L );
account3.setAmount( 250d );
account3.setRate( 1.05 / 100 );
account3.setActive( true );
client.getAccounts().add( account3 );
entityManager.persist( account3 );
} );
//end::mapping-filter-join-table-persistence-example[]
//tag::mapping-filter-join-table-collection-query-example[]
doInJPA( this::entityManagerFactory, entityManager -> {
Client client = entityManager.find( Client.class, 1L );
assertEquals( 3, client.getAccounts().size());
} );
doInJPA( this::entityManagerFactory, entityManager -> {
log.infof( "Activate filter [%s]", "firstAccounts");
Client client = entityManager.find( Client.class, 1L );
entityManager
.unwrap( Session.class )
.enableFilter( "firstAccounts" )
.setParameter( "maxOrderId", 1);
assertEquals( 2, client.getAccounts().size());
} );
//end::mapping-filter-join-table-collection-query-example[]
}
//tag::mapping-filter-join-table-example[]
public enum AccountType {
DEBIT,
CREDIT
}
@Entity(name = "Client")
@FilterDef(name="firstAccounts", parameters=@ParamDef( name="maxOrderId", type="int" ) )
@Filter(name="firstAccounts", condition="order_id <= :maxOrderId")
public static class Client {
@Id
private Long id;
private String name;
@OneToMany
@OrderColumn(name = "order_id")
@FilterJoinTable(name="firstAccounts", condition="order_id <= :maxOrderId")
private List<Account> accounts = new ArrayList<>( );
//Getters and setters omitted for brevity
//end::mapping-filter-join-table-example[]
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Account> getAccounts() {
return accounts;
}
//tag::mapping-filter-join-table-example[]
}
@Entity(name = "Account")
public static class Account {
@Id
private Long id;
@Column(name = "account_type")
@Enumerated(EnumType.STRING)
private AccountType type;
private Double amount;
private Double rate;
private boolean active;
//Getters and setters omitted for brevity
//end::mapping-filter-join-table-example[]
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public AccountType getType() {
return type;
}
public void setType(AccountType type) {
this.type = type;
}
public Double getAmount() {
return amount;
}
public void setAmount(Double amount) {
this.amount = amount;
}
public Double getRate() {
return rate;
}
public void setRate(Double rate) {
this.rate = rate;
}
public boolean isActive() {
return active;
}
public void setActive(boolean active) {
this.active = active;
}
//tag::mapping-filter-join-table-example[]
}
//end::mapping-filter-join-table-example[]
}