Hibernate
/
hibernate-orm
mirror of https://github.com/hibernate/hibernate-orm
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

HHH-16505 Avoid using the FK for left joins with condition

This commit is contained in:
Marco Belladelli 2023-05-02 10:52:58 +02:00
parent 38aa92a170
commit f14f3702c6
No known key found for this signature in database
GPG Key ID: D1D0C3030AE3AA35
1 changed files with 10 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
hibernate-core/src/main/java/org/hibernate/query/sqm/sql/BaseSqmToSqlAstConverter.java
View File

@ -235,6 +235,7 @@ import org.hibernate.query.sqm.tree.from.SqmEntityJoin;
import org.hibernate.query.sqm.tree.from.SqmFrom;
import org.hibernate.query.sqm.tree.from.SqmFromClause;
import org.hibernate.query.sqm.tree.from.SqmJoin;
import org.hibernate.query.sqm.tree.from.SqmQualifiedJoin;
import org.hibernate.query.sqm.tree.from.SqmRoot;
import org.hibernate.query.sqm.tree.insert.SqmInsertSelectStatement;
import org.hibernate.query.sqm.tree.insert.SqmInsertStatement;
@ -3698,6 +3699,10 @@ public abstract class BaseSqmToSqlAstConverter<T extends Statement> extends Base
throw new InterpretationException( "SqmEntityJoin not yet resolved to TableGroup" );
}
private boolean isJoinWithPredicate(SqmFrom<?, ?> path) {
return path instanceof SqmQualifiedJoin && ( (SqmQualifiedJoin<?, ?>) path ).getJoinPredicate() != null;
}
private Expression visitTableGroup(TableGroup tableGroup, SqmFrom<?, ?> path) {
final ModelPartContainer tableGroupModelPart = tableGroup.getModelPart();
@ -3722,9 +3727,12 @@ public abstract class BaseSqmToSqlAstConverter<T extends Statement> extends Base
if ( inferredEntityMapping == null ) {
// When the inferred mapping is null, we try to resolve to the FK by default, which is fine because
// expansion to all target columns for select and group by clauses is handled in EntityValuedPathInterpretation
if ( entityValuedModelPart instanceof EntityAssociationMapping && ( (EntityAssociationMapping) entityValuedModelPart ).isFkOptimizationAllowed() ) {
if ( entityValuedModelPart instanceof EntityAssociationMapping
&& ( (EntityAssociationMapping) entityValuedModelPart ).isFkOptimizationAllowed()
&& !isJoinWithPredicate( path ) ) {
// If the table group uses an association mapping that is not a one-to-many,
// we make use of the FK model part
// we make use of the FK model part - unless the path is a join with an explicit predicate,
// for which we should always use the target's identifier to preserve semantics
final EntityAssociationMapping associationMapping = (EntityAssociationMapping) entityValuedModelPart;
final ModelPart targetPart = associationMapping.getForeignKeyDescriptor().getPart(
associationMapping.getSideNature()