HHH-11886 - Elaborate Envers documentation and switch to actual source code examples
Migarte code snippets to test cases for Join relations queries
This commit is contained in:
Vlad Mihalcea
parent
02c5996571
commit
742d8be69c
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@ -959,60 +959,79 @@ Other queries (also accessible from `org.hibernate.envers.CrossTypeRevisionChang
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Returns a map containing lists of entity snapshots grouped by modification operation (e.g. addition, update and removal).
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Executes `3N+1` SQL queries, where `N` is a number of different entity classes modified within specified revision.
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[[envers-querying-entity-relation-jobs]]
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[[envers-querying-entity-relation-joins]]
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=== Querying for entities using entity relation joins
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Audit queries support the ability to apply constraints, projections, and sort operations based on entity relations. In order
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to traverse entity relations through an audit query, you must use the relation traversal API with a join type.
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[IMPORTANT]
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[WARNING]
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====
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Relation join queries are considered experimental and may change in future releases.
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====
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Audit queries support the ability to apply constraints, projections, and sort operations based on entity relations. In order
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to traverse entity relations through an audit query, you must use the relation traversal API with a join type.
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[NOTE]
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====
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Relation joins can only be applied to `*-to-one` mappings and can only be specified using `JoinType.LEFT` or
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`JoinType.INNER`.
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Relation joins can be applied to `many-to-one` and `many-to-one` mappings only when using `JoinType.LEFT` or `JoinType.INNER`.
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====
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The basis for creating an entity relation join query is as follows:
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[source,java]
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[[envers-querying-entity-relation-inner-join]]
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.INNER JOIN entity audit query
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====
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[source, JAVA, indent=0]
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----
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// create an inner join query
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AuditQuery query = getAuditReader().createQuery()
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.forEntitiesAtRevision( Car.class, 1 )
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.traverseRelation( "owner", JoinType.INNER );
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include::{sourcedir}/QueryAuditTest.java[tags=envers-querying-entity-relation-inner-join]
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----
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====
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// create a left join query
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AuditQuery query = getAuditReader().createQuery()
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.forEntitiesAtRevision( Car.class, 1 )
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.traverseRelation( "owner", JoinType.LEFT );
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[[envers-querying-entity-relation-left-join]]
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.LEFT JOIN entity audit query
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====
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[source, JAVA, indent=0]
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----
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include::{sourcedir}/QueryAuditTest.java[tags=envers-querying-entity-relation-left-join]
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----
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====
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Like any other query, constraints may be added to restrict the results.
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For example, to find all `Customers` entities whose addresses are in `România`,
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you can use the following query:
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[[envers-querying-entity-relation-join-restriction]]
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.Filtering the join relation with a WHERE clause predicate
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====
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[source, JAVA, indent=0]
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----
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include::{sourcedir}/QueryAuditTest.java[tags=envers-querying-entity-relation-join-restriction]
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----
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Like any other query, constraints may be added to restrict the results. For example, to find all `Car` entities that
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have an owner with a name starting with `Joe`, you would use:
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[source,java]
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[source, SQL, indent=0]
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----
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AuditQuery query = getAuditReader().createQuery()
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.forEntitiesAtRevision( Car.class, 1 )
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.traverseRelation( "owner", JoinType.INNER )
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.add( AuditEntity.property( "name" ).like( "Joe%" ) );
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include::{extrasdir}/envers-querying-entity-relation-join-restriction.sql[]
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----
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====
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It is also possible to traverse beyond the first relation in an entity graph.
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For example, to find all `Customer` entities
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where the country entity belonging to the address attribute is `România`:
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[[envers-querying-entity-relation-nested-join-restriction]]
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.Filtering a nested join relation with a WHERE clause predicate
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====
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[source, JAVA, indent=0]
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----
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include::{sourcedir}/QueryAuditAdressCountryTest.java[tags=envers-querying-entity-relation-nested-join-restriction]
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----
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It is also possible to traverse beyond the first relation in an entity graph. For example, to find all `Car` entities
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where the owner's address has a street number that equals `1234`:
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[source,java]
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[source, SQL, indent=0]
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----
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AuditQuery query = getAuditReader().createQuery()
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.forEntitiesAtRevision( Car.class, 1 )
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.traverseRelation( "owner", JoinType.INNER )
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.traverseRelation( "address", JoinType.INNER )
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.add( AuditEntity.property( "streetNumber" ).eq( 1234 ) );
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include::{extrasdir}/envers-querying-entity-relation-nested-join-restriction.sql[]
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----
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====
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Complex constraints may also be added that are applicable to properties of nested relations or the base query entity or
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relation state, such as testing for `null`. For example, the following query illustrates how to find all `Car` entities where
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@ -0,0 +1,42 @@
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select
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c.id as id1_3_,
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c.REV as REV2_3_,
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c.REVTYPE as REVTYPE3_3_,
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c.REVEND as REVEND4_3_,
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c.created_on as created_5_3_,
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c.firstName as firstNam6_3_,
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c.lastName as lastName7_3_,
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c.address_id as address_8_3_
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from
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Customer_AUD c
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inner join
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Address_AUD a
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on (
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c.address_id=a.id
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or (
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c.address_id is null
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)
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and (
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a.id is null
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)
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)
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where
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c.REV<=?
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and c.REVTYPE<>?
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and (
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c.REVEND>?
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or c.REVEND is null
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)
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and a.REV<=?
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and a.country=?
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and (
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a.REVEND>?
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or a.REVEND is null
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)
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-- binding parameter [1] as [INTEGER] - [1]
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-- binding parameter [2] as [INTEGER] - [2]
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-- binding parameter [3] as [INTEGER] - [1]
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-- binding parameter [4] as [INTEGER] - [1]
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-- binding parameter [5] as [VARCHAR] - [România]
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-- binding parameter [6] as [INTEGER] - [1]
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@ -0,0 +1,60 @@
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select
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cu.id as id1_5_,
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cu.REV as REV2_5_,
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cu.REVTYPE as REVTYPE3_5_,
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cu.REVEND as REVEND4_5_,
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cu.created_on as created_5_5_,
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cu.firstName as firstNam6_5_,
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cu.lastName as lastName7_5_,
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cu.address_id as address_8_5_
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from
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Customer_AUD cu
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inner join
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Address_AUD a
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on (
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cu.address_id=a.id
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or (
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cu.address_id is null
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)
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and (
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a.id is null
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)
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)
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inner join
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Country_AUD co
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on (
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a.country_id=co.id
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or (
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a.country_id is null
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)
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and (
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co.id is null
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)
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)
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where
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cu.REV<=?
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and cu.REVTYPE<>?
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and (
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cu.REVEND>?
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or cu.REVEND is null
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)
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and a.REV<=?
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and (
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a.REVEND>?
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or a.REVEND is null
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)
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and co.REV<=?
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and co.name=?
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and (
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co.REVEND>?
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or co.REVEND is null
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)
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-- binding parameter [1] as [INTEGER] - [1]
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-- binding parameter [2] as [INTEGER] - [2]
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-- binding parameter [3] as [INTEGER] - [1]
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-- binding parameter [4] as [INTEGER] - [1]
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-- binding parameter [5] as [INTEGER] - [1]
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-- binding parameter [6] as [INTEGER] - [1]
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-- binding parameter [7] as [VARCHAR] - [România]
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-- binding parameter [8] as [INTEGER] - [1]
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@ -1,23 +1,23 @@
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select
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queryaudit0_.id as id1_3_,
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queryaudit0_.REV as REV2_3_,
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queryaudit0_.REVTYPE as REVTYPE3_3_,
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queryaudit0_.REVEND as REVEND4_3_,
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queryaudit0_.created_on as created_5_3_,
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queryaudit0_.createdOn_MOD as createdO6_3_,
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queryaudit0_.firstName as firstNam7_3_,
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queryaudit0_.firstName_MOD as firstNam8_3_,
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queryaudit0_.lastName as lastName9_3_,
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queryaudit0_.lastName_MOD as lastNam10_3_,
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queryaudit0_.address_id as address11_3_,
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queryaudit0_.address_MOD as address12_3_
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c.id as id1_3_,
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c.REV as REV2_3_,
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c.REVTYPE as REVTYPE3_3_,
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c.REVEND as REVEND4_3_,
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c.created_on as created_5_3_,
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c.createdOn_MOD as createdO6_3_,
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c.firstName as firstNam7_3_,
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c.firstName_MOD as firstNam8_3_,
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c.lastName as lastName9_3_,
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c.lastName_MOD as lastNam10_3_,
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c.address_id as address11_3_,
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c.address_MOD as address12_3_
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from
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Customer_AUD queryaudit0_
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Customer_AUD c
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where
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queryaudit0_.REV=?
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and queryaudit0_.id=?
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and queryaudit0_.lastName_MOD=?
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and queryaudit0_.firstName_MOD=?
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c.REV=?
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and c.id=?
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and c.lastName_MOD=?
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and c.firstName_MOD=?
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-- binding parameter [1] as [INTEGER] - [2]
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-- binding parameter [2] as [BIGINT] - [1]
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@ -1,29 +1,29 @@
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select
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queryaudit0_.id as id1_3_0_,
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queryaudit0_.REV as REV2_3_0_,
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c.id as id1_3_0_,
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c.REV as REV2_3_0_,
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defaultrev1_.REV as REV1_4_1_,
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queryaudit0_.REVTYPE as REVTYPE3_3_0_,
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queryaudit0_.REVEND as REVEND4_3_0_,
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queryaudit0_.created_on as created_5_3_0_,
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queryaudit0_.createdOn_MOD as createdO6_3_0_,
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queryaudit0_.firstName as firstNam7_3_0_,
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queryaudit0_.firstName_MOD as firstNam8_3_0_,
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queryaudit0_.lastName as lastName9_3_0_,
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queryaudit0_.lastName_MOD as lastNam10_3_0_,
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queryaudit0_.address_id as address11_3_0_,
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queryaudit0_.address_MOD as address12_3_0_,
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c.REVTYPE as REVTYPE3_3_0_,
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c.REVEND as REVEND4_3_0_,
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c.created_on as created_5_3_0_,
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c.createdOn_MOD as createdO6_3_0_,
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c.firstName as firstNam7_3_0_,
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c.firstName_MOD as firstNam8_3_0_,
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c.lastName as lastName9_3_0_,
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c.lastName_MOD as lastNam10_3_0_,
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c.address_id as address11_3_0_,
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c.address_MOD as address12_3_0_,
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defaultrev1_.REVTSTMP as REVTSTMP2_4_1_
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from
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Customer_AUD queryaudit0_ cross
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Customer_AUD c cross
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join
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REVINFO defaultrev1_
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where
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queryaudit0_.id=?
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and queryaudit0_.lastName_MOD=?
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and queryaudit0_.firstName_MOD=?
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and queryaudit0_.REV=defaultrev1_.REV
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c.id=?
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and c.lastName_MOD=?
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and c.firstName_MOD=?
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and c.REV=defaultrev1_.REV
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order by
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queryaudit0_.REV asc
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c.REV asc
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-- binding parameter [1] as [BIGINT] - [1]
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-- binding parameter [2] as [BOOLEAN] - [true]
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@ -1,28 +1,28 @@
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select
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queryaudit0_.id as id1_3_0_,
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queryaudit0_.REV as REV2_3_0_,
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c.id as id1_3_0_,
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c.REV as REV2_3_0_,
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defaultrev1_.REV as REV1_4_1_,
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queryaudit0_.REVTYPE as REVTYPE3_3_0_,
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queryaudit0_.REVEND as REVEND4_3_0_,
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queryaudit0_.created_on as created_5_3_0_,
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queryaudit0_.createdOn_MOD as createdO6_3_0_,
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queryaudit0_.firstName as firstNam7_3_0_,
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queryaudit0_.firstName_MOD as firstNam8_3_0_,
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queryaudit0_.lastName as lastName9_3_0_,
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queryaudit0_.lastName_MOD as lastNam10_3_0_,
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queryaudit0_.address_id as address11_3_0_,
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queryaudit0_.address_MOD as address12_3_0_,
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c.REVTYPE as REVTYPE3_3_0_,
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c.REVEND as REVEND4_3_0_,
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c.created_on as created_5_3_0_,
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c.createdOn_MOD as createdO6_3_0_,
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c.firstName as firstNam7_3_0_,
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c.firstName_MOD as firstNam8_3_0_,
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c.lastName as lastName9_3_0_,
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c.lastName_MOD as lastNam10_3_0_,
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c.address_id as address11_3_0_,
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c.address_MOD as address12_3_0_,
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defaultrev1_.REVTSTMP as REVTSTMP2_4_1_
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from
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Customer_AUD queryaudit0_ cross
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Customer_AUD c cross
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join
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REVINFO defaultrev1_
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where
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queryaudit0_.id = ?
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and queryaudit0_.lastName_MOD = ?
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and queryaudit0_.REV=defaultrev1_.REV
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c.id = ?
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and c.lastName_MOD = ?
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and c.REV=defaultrev1_.REV
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order by
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queryaudit0_.REV asc
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c.REV asc
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-- binding parameter [1] as [BIGINT] - [1]
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-- binding parameter [2] as [BOOLEAN] - [true]
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@ -0,0 +1,258 @@
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/*
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* Hibernate, Relational Persistence for Idiomatic Java
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*
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* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
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* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
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*/
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package org.hibernate.userguide.envers;
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import java.sql.Timestamp;
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import java.time.LocalDateTime;
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import java.time.ZoneOffset;
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import java.util.Date;
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import java.util.List;
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import java.util.Map;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.FetchType;
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import javax.persistence.Id;
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import javax.persistence.ManyToOne;
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import javax.persistence.Temporal;
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import javax.persistence.TemporalType;
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import javax.persistence.criteria.JoinType;
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import org.hibernate.annotations.CreationTimestamp;
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import org.hibernate.envers.AuditReaderFactory;
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import org.hibernate.envers.Audited;
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import org.hibernate.envers.configuration.EnversSettings;
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import org.hibernate.envers.query.AuditEntity;
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import org.hibernate.envers.query.AuditQuery;
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import org.hibernate.envers.strategy.ValidityAuditStrategy;
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import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
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import org.junit.Test;
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import static org.hibernate.testing.transaction.TransactionUtil.doInJPA;
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import static org.junit.Assert.assertEquals;
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/**
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* @author Vlad Mihalcea
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*/
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public class QueryAuditAdressCountryTest extends BaseEntityManagerFunctionalTestCase {
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@Override
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protected Class<?>[] getAnnotatedClasses() {
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return new Class<?>[] {
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Customer.class,
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Address.class,
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Country.class
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};
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}
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@Override
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protected void addConfigOptions(Map options) {
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options.put(
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EnversSettings.AUDIT_STRATEGY,
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ValidityAuditStrategy.class.getName()
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);
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}
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@Test
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public void test() {
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doInJPA( this::entityManagerFactory, entityManager -> {
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Country country = new Country();
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country.setId( 1L );
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country.setName( "România" );
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entityManager.persist( country );
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Address address = new Address();
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address.setId( 1L );
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address.setCountry( country );
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address.setCity( "Cluj-Napoca" );
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address.setStreet( "Bulevardul Eroilor" );
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address.setStreetNumber( "1 A" );
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entityManager.persist( address );
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Customer customer = new Customer();
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customer.setId( 1L );
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customer.setFirstName( "John" );
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customer.setLastName( "Doe" );
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customer.setAddress( address );
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entityManager.persist( customer );
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} );
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doInJPA( this::entityManagerFactory, entityManager -> {
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Customer customer = entityManager.find( Customer.class, 1L );
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customer.setLastName( "Doe Jr." );
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} );
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doInJPA( this::entityManagerFactory, entityManager -> {
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Customer customer = entityManager.getReference( Customer.class, 1L );
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entityManager.remove( customer );
|
||||
} );
|
||||
|
||||
List<Number> revisions = doInJPA( this::entityManagerFactory, entityManager -> {
|
||||
return AuditReaderFactory.get( entityManager ).getRevisions(
|
||||
Customer.class,
|
||||
1L
|
||||
);
|
||||
} );
|
||||
|
||||
doInJPA( this::entityManagerFactory, entityManager -> {
|
||||
//tag::envers-querying-entity-relation-nested-join-restriction[]
|
||||
Customer customer = (Customer) AuditReaderFactory
|
||||
.get( entityManager )
|
||||
.createQuery()
|
||||
.forEntitiesAtRevision( Customer.class, 1 )
|
||||
.traverseRelation( "address", JoinType.INNER )
|
||||
.traverseRelation( "country", JoinType.INNER )
|
||||
.add( AuditEntity.property( "name" ).eq( "România" ) )
|
||||
.getSingleResult();
|
||||
//end::envers-querying-entity-relation-nested-join-restriction[]
|
||||
} );
|
||||
}
|
||||
|
||||
@Audited
|
||||
@Entity(name = "Customer")
|
||||
public static class Customer {
|
||||
|
||||
@Id
|
||||
private Long id;
|
||||
|
||||
private String firstName;
|
||||
|
||||
private String lastName;
|
||||
|
||||
@Temporal( TemporalType.TIMESTAMP )
|
||||
@Column(name = "created_on")
|
||||
@CreationTimestamp
|
||||
private Date createdOn;
|
||||
|
||||
@ManyToOne(fetch = FetchType.LAZY)
|
||||
private Address address;
|
||||
|
||||
public Long getId() {
|
||||
return id;
|
||||
}
|
||||
|
||||
public void setId(Long id) {
|
||||
this.id = id;
|
||||
}
|
||||
|
||||
public String getFirstName() {
|
||||
return firstName;
|
||||
}
|
||||
|
||||
public void setFirstName(String firstName) {
|
||||
this.firstName = firstName;
|
||||
}
|
||||
|
||||
public String getLastName() {
|
||||
return lastName;
|
||||
}
|
||||
|
||||
public void setLastName(String lastName) {
|
||||
this.lastName = lastName;
|
||||
}
|
||||
|
||||
public Date getCreatedOn() {
|
||||
return createdOn;
|
||||
}
|
||||
|
||||
public void setCreatedOn(Date createdOn) {
|
||||
this.createdOn = createdOn;
|
||||
}
|
||||
|
||||
public Address getAddress() {
|
||||
return address;
|
||||
}
|
||||
|
||||
public void setAddress(Address address) {
|
||||
this.address = address;
|
||||
}
|
||||
}
|
||||
|
||||
@Audited
|
||||
@Entity(name = "Address")
|
||||
public static class Address {
|
||||
|
||||
@Id
|
||||
private Long id;
|
||||
|
||||
@ManyToOne(fetch = FetchType.LAZY)
|
||||
private Country country;
|
||||
|
||||
private String city;
|
||||
|
||||
private String street;
|
||||
|
||||
private String streetNumber;
|
||||
|
||||
public Long getId() {
|
||||
return id;
|
||||
}
|
||||
|
||||
public void setId(Long id) {
|
||||
this.id = id;
|
||||
}
|
||||
|
||||
public Country getCountry() {
|
||||
return country;
|
||||
}
|
||||
|
||||
public void setCountry(Country country) {
|
||||
this.country = country;
|
||||
}
|
||||
|
||||
public String getCity() {
|
||||
return city;
|
||||
}
|
||||
|
||||
public void setCity(String city) {
|
||||
this.city = city;
|
||||
}
|
||||
|
||||
public String getStreet() {
|
||||
return street;
|
||||
}
|
||||
|
||||
public void setStreet(String street) {
|
||||
this.street = street;
|
||||
}
|
||||
|
||||
public String getStreetNumber() {
|
||||
return streetNumber;
|
||||
}
|
||||
|
||||
public void setStreetNumber(String streetNumber) {
|
||||
this.streetNumber = streetNumber;
|
||||
}
|
||||
}
|
||||
|
||||
@Audited
|
||||
@Entity(name = "Country")
|
||||
public static class Country {
|
||||
|
||||
@Id
|
||||
private Long id;
|
||||
|
||||
private String name;
|
||||
|
||||
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;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -19,6 +19,7 @@ import javax.persistence.Id;
|
|||
import javax.persistence.ManyToOne;
|
||||
import javax.persistence.Temporal;
|
||||
import javax.persistence.TemporalType;
|
||||
import javax.persistence.criteria.JoinType;
|
||||
|
||||
import org.hibernate.annotations.CreationTimestamp;
|
||||
import org.hibernate.envers.AuditReaderFactory;
|
||||
|
|
@ -225,6 +226,39 @@ public class QueryAuditTest extends BaseEntityManagerFunctionalTestCase {
|
|||
|
||||
assertEquals( 1, revision );
|
||||
} );
|
||||
|
||||
doInJPA( this::entityManagerFactory, entityManager -> {
|
||||
{
|
||||
//tag::envers-querying-entity-relation-inner-join[]
|
||||
AuditQuery innerJoinAuditQuery = AuditReaderFactory
|
||||
.get( entityManager )
|
||||
.createQuery()
|
||||
.forEntitiesAtRevision( Customer.class, 1 )
|
||||
.traverseRelation( "address", JoinType.INNER );
|
||||
//end::envers-querying-entity-relation-inner-join[]
|
||||
}
|
||||
{
|
||||
//tag::envers-querying-entity-relation-left-join[]
|
||||
AuditQuery innerJoinAuditQuery = AuditReaderFactory
|
||||
.get( entityManager )
|
||||
.createQuery()
|
||||
.forEntitiesAtRevision( Customer.class, 1 )
|
||||
.traverseRelation( "address", JoinType.LEFT );
|
||||
//end::envers-querying-entity-relation-left-join[]
|
||||
}
|
||||
} );
|
||||
|
||||
doInJPA( this::entityManagerFactory, entityManager -> {
|
||||
//tag::envers-querying-entity-relation-join-restriction[]
|
||||
Customer customer = (Customer) AuditReaderFactory
|
||||
.get( entityManager )
|
||||
.createQuery()
|
||||
.forEntitiesAtRevision( Customer.class, 1 )
|
||||
.traverseRelation( "address", JoinType.INNER )
|
||||
.add( AuditEntity.property( "country" ).eq( "România" ) )
|
||||
.getSingleResult();
|
||||
//end::envers-querying-entity-relation-join-restriction[]
|
||||
} );
|
||||
}
|
||||
|
||||
@Audited
|
||||
|
|
|
|||
Loading…
Reference in New Issue