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Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.AbstractQuery Selection getSelection() Return the selection of the query, or null if no selection has been set. Returns: selection item. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.PluralAttribute CollectionType getCollectionType() Return the collection type. Returns: collection type. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.AbstractQuery List getGroupList() Return a list of the grouping expressions. Returns empty list if no grouping expressions have been specified. Modifications to the list do not affect the query. Returns: the list of grouping expressions. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CommonAbstractCriteria Predicate getRestriction() Return the predicate that corresponds to the where clause restriction(s), or null if no restrictions have been specified. Returns: where clause predicate. Since: Jakarta Persistence (JPA) 1 .0

: IllegalArgumentException - if not an entity. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CommonAbstractCriteria Set getParameters() Return the parameters of the query. Returns empty set if there are no parameters. Modifications to the set do not affect the query. Returns: the query parameters. Since: Jakarta Persistence (JPA) 1 .0

: the metamodel managed type. Throws: IllegalArgumentException - if not a managed class. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder CriteriaQuery createQuery() Create a CriteriaQuery object. Returns: criteria query object. Since: Jakarta Persistence (JPA) 1 .0

type. Throws: IllegalArgumentException - if not an embeddable class. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder CriteriaQuery createQuery (    Class resultClass ) Create a CriteriaQuery object with the given result type. Parameters: resultClass - type of the query result Returns: criteria query object. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.SingularAttribute Type getType() Return the type that represents the type of the attribute. Returns: type of attribute. Since: Jakarta Persistence (JPA) 1 .0

. Parameters: restrictions - zero or more restriction predicates Returns: the modified join object. Since: Jakarta Persistence (JPA) 2. 1

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.StaticMetamodel Class value Class being modelled by the annotated class. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CollectionJoin CollectionAttribute getModel() Return the metamodel representation for the collection attribute. Returns: metamodel type representing the Collection that is the target of the join. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Type PersistenceType getPersistenceType() Return the persistence type. Returns: persistence type. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CommonAbstractCriteria Subquery subquery (    Class type ) Create a subquery of the query. Parameters: type - the subquery result type Returns: subquery. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Type Class getJavaType() Return the represented Java type. Returns: Java type. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CommonAbstractCriteria Subquery subquery (    EntityType type ) Create a subquery of the query. Parameters: type - the subquery result type Returns: subquery. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.PluralAttribute Type getElementType() Return the type representing the element type of the collection. Returns: element type. Since: Jakarta Persistence (JPA) 1 .0

: IllegalArgumentException - if an argument is a tuple- or array-valued selection item. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.SingularAttribute boolean isId() Is the attribute an id attribute? This method returns true if the attribute is a simple id , an embedded id , or an attribute of an id class . Returns: boolean indicating whether the attribute is an id. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.SingularAttribute boolean isVersion() Is the attribute a version attribute? Returns: boolean indicating whether the attribute is a version attribute. Since: Jakarta Persistence (JPA) 1 .0

: IllegalArgumentException - if an argument is a tuple- or array-valued selection item. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.SingularAttribute boolean isOptional() Can the attribute be null? Returns: boolean indicating whether the attribute can be null. See Also: jakarta.persistence.Basic.optional Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Attribute boolean isAssociation() Is the attribute an association. Returns: boolean indicating whether the attribute corresponds to an association. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder CriteriaQuery createTupleQuery() Create a CriteriaQuery object that returns a tuple of objects as its result. Returns: criteria query object. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Attribute boolean isCollection() Is the attribute collection-valued (represents a Collection , Set , List , or Map ). Returns: boolean indicating whether the attribute is collection-valued. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder CriteriaUpdate createCriteriaUpdate (    Class targetEntity ) Create a CriteriaUpdate query object to perform a bulk update operation. Parameters: targetEntity - target type for update operation Returns: the query object. Since: Jakarta Persistence (JPA) 2. 1

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Bindable BindableType getBindableType() Return the bindable type of the represented object. Returns: bindable type. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder CriteriaDelete createCriteriaDelete (    Class targetEntity ) Create a CriteriaDelete query object to perform a bulk delete operation. Parameters: targetEntity - target type for delete operation Returns: the query object. Since: Jakarta Persistence (JPA) 2. 1

_TYPE , the Java type of the represented entity or attribute is returned. Returns: Java type. Since: Jakarta Persistence (JPA) 1 .0

item. Throws: IllegalArgumentException - if an argument is a tuple- or array-valued selection item. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Attribute PersistentAttributeType getPersistentAttributeType() Return the persistent attribute type for the attribute. Returns: persistent attribute type. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Expression avg (    Expression x ) Create an aggregate expression applying the avg operation. Parameters: x - expression representing input value to avg operation Returns: avg expression. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Attribute ManagedType getDeclaringType() Return the managed type representing the type in which the attribute was declared. Returns: declaring type. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Expression sum (    Expression x ) Create an aggregate expression applying the sum operation. Parameters: x - expression representing input value to sum operation Returns: sum expression. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Attribute Class getJavaType() Return the Java type of the represented attribute. Returns: Java type. Since: Jakarta Persistence (JPA) 1 .0

value to sum operation Returns: sum expression. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.Attribute Member getJavaMember() Return the java.lang.reflect.Member for the represented attribute. Returns: corresponding java.lang.reflect.Member . Since: Jakarta Persistence (JPA) 1 .0

value to sum operation Returns: sum expression. Since: Jakarta Persistence (JPA) 1 .0

: IllegalArgumentException - if version attribute of the type is not declared in the identifiable type. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.criteria.CriteriaBuilder Order asc (    Expression expression ) Create an ordering by the ascending value of the expression. Parameters: expression - expression used to define the ordering Returns: ascending ordering corresponding to the expression. Since: Jakarta Persistence (JPA) 1 .0

null if no such supertype. Since: Jakarta Persistence (JPA) 1 .0

corresponding to the expression. Since: Jakarta Persistence (JPA) 1 .0

type has a single id attribute. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.IdentifiableType boolean hasVersionAttribute() Whether the identifiable type has a version attribute. Returns: boolean indicating whether the identifiable type has a version attribute. Since: Jakarta Persistence (JPA) 1 .0

Jakarta Persistence (JPA) Method in jakarta.persistence.metamodel.EntityType String getName() Return the entity name. Returns: entity name. Since: Jakarta Persistence (JPA) 1 .0

-written code should use the date/time types defined in java.time . Since: Jakarta Persistence (JPA) 1 .0

the identifiable type or if the identifiable type has an id class. Since: Jakarta Persistence (JPA) 1 .0

if the argument is of incorrect type. Since: Jakarta Persistence (JPA) 1 .0