HHH-13552 Store the Collection Persister in a field of CollectionType
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@ -63,6 +63,10 @@ public abstract class CollectionType extends AbstractType implements Association
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private final String role;
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private final String foreignKeyPropertyName;
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// the need for the persister if very hot in many use cases: cache it in a field
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// TODO initialize it at constructor time
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private volatile CollectionPersister persister;
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/**
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* @deprecated Use the other contructor
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*/
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@ -319,11 +323,33 @@ public abstract class CollectionType extends AbstractType implements Association
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* @return The underlying collection persister
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*/
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private CollectionPersister getPersister(SharedSessionContractImplementor session) {
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return getPersister( session.getFactory() );
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CollectionPersister p = this.persister;
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if ( p != null ) {
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return p;
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}
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else {
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return getPersister( session.getFactory() );
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}
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}
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private CollectionPersister getPersister(SessionFactoryImplementor factory) {
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return factory.getMetamodel().collectionPersister( role );
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CollectionPersister p = this.persister;
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if ( p != null ) {
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return p;
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}
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else {
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synchronized ( this ) {
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p = this.persister;
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if ( p != null ) {
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return p;
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}
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else {
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p = factory.getMetamodel().collectionPersister( role );
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this.persister = p;
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return p;
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}
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}
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}
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}
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@Override
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