18 | How do I achieve a Deep Fetch using JOIN FETCH? that I can express one level of eager fetch in JPQL as follows: SELECT c FROM C JOIN FETCH c.bList WHERE c.id=:id But when I attempt to take it to the 2nd level: SELECT c FROM C JOIN FETCH c.bList JOIN FETCH c.bList.aList WHERE c.id=:id I get an error along the lines of: Invalid fetch path |
18 | Lazy Init / Eager / Join Fetch collection strategy ? What to choose ?,join fetch seems to be the right choice. What about ObjectDb ? The implementation is totally different. Is an "All eager strategy" more efficient that many join fetch ( cartesian product + distinct ... all strategy" Or "Fetch Join strategy" for ObjectDb ? Regards, Xirt xirt Sylvain > Is an "All eager |
4 | javax.persistence.criteria.Fetchjavax.persistence.criteria Interface Fetch<Z,X> Superinterfaces: FetchParent<Z,X> Represents a join ... a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name of the attribute for the target |
4 | javax.persistence.criteria.CriteriaQuery removed, and results will be returned in no particular order. The left-to-right sequence of the ordering ... when it results from a get or join operation and the query result type is specified. For example ... (Product.class); q2.select(q2.from(Order.class) .join("items |
4 | Issue with DISTINCT Select.foundation.contact.individual.IndividualContact $1 LEFT JOIN $1.profile $2 WHERE ((TYPE($1)=class com ... using the left join to select all entities, also those which have profile = null quasado Alexander Adam ... is invalid: SELECT DISTINCT $1 FROM IndividualContact $1 LEFT JOIN $1.profile $2 ORDER BY UPPER($2 |
4 | JoinType.RIGHTEnum Constant javax.persistence.criteria.JoinType RIGHT Right outer join. Since: JPA 2.0 |
3 | Criteria Query From Elements (bound by an entity class) are represented by the Root subinterface: Join variables (bound by an attribute of a preceding variable in the FROM clause) are represented by the Join subinterface and its descendant interfaces: See the FROM in Criteria Queries section for more details and examples. Join |
3 | javax.persistence.criteria.FetchParent, Join, ListJoin, MapJoin, PluralJoin, Root, SetJoin Represents an element of the from clause ... a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using an inner join. Parameters: attributeName - name of the attribute for the target |
3 | Query Execution Error JOIN $1.mitgliedschaft $2 LEFT JOIN $2.abteilungen $3 LEFT JOIN $3.abteilung $4 WHERE (((NOT ((($2 ... com.lexware.vereinsverwaltung.verein.mitglied.Mitglied $1 LEFT JOIN $1.mitgliedschaft $2 LEFT JOIN $2.abteilungen $3 LEFT JOIN $3.abteilung $4 WHERE (((NOT ((($2 IS NOT NULL) AND ($3 IS NOT NULL |
3 | Strings in JPQL and Criteria Queries (_) - which matches any single character. The left operand is always the string to check |
