89 | Delete object from collection versus delete from JPQLDelete object from collection versus delete from JPQL |
38 | join(list)Method javax.persistence.criteria.From ListJoin<X,Y> join( ListAttribute<?,Y> list ) Create an inner join to the specified List-valued attribute. Parameters: list - target of the join Returns: the resulting join Since: JPA 2.0 |
38 | from(entityClass)Method javax.persistence.criteria.AbstractQuery Root<X> from( Class<X> entityClass ) Create and add a query root corresponding to the given entity, forming a cartesian product with any existing roots. Parameters: entityClass - the entity class Returns: query root corresponding to the given entity Since: JPA 2.0 |
38 | join(attributeName, jt)Method javax.persistence.criteria.From Join<X,Y> join( String attributeName, JoinType jt ) Create a join to the specified attribute using the given join type. Parameters: attributeName - name of the attribute for the target of the join jt - join type Returns: the resulting join Throws |
38 | join(map)Method javax.persistence.criteria.From MapJoin<X,K,V> join( MapAttribute<?,K,V> map ) Create an inner join to the specified Map-valued attribute. Parameters: map - target of the join Returns: the resulting join Since: JPA 2.0 |
38 | join(attributeName)Method javax.persistence.criteria.From Join<X,Y> join( String attributeName ) Create an inner join to the specified attribute. Parameters: attributeName - name of the attribute for the target of the join Returns: the resulting join Throws: IllegalArgumentException - if attribute of the given name does not exist Since: JPA 2.0 |
38 | join(set)Method javax.persistence.criteria.From SetJoin<X,Y> join( SetAttribute<?,Y> set ) Create an inner join to the specified Set-valued attribute. Parameters: set - target of the join Returns: the resulting join Since: JPA 2.0 |
37 | JPA Query Structure (JPQL / Criteria) rather than just field values from database tables, as with SQL. That makes JPQL more object oriented friendly ... of up to 6 clauses in the following format: SELECT ... FROM ... [WHERE ...] [GROUP BY ... [HAVING ...]] [ORDER BY ...] The first two clauses, SELECT and FROM are required in every retrieval query |
31 | Chapter 4 - JPA Queries (JPQL / Criteria) (and a criteria query) is explained by describing the main clauses of JPQL queries (SELECT, FROM, WHERE, GROUP |
1 | [ODB1] Chapter 6 - Persistent Objects, every transient object that, at commit time, is reachable from a persistent object (using persistent ... . An embedded object cannot be shared by references from multiple objects. In addition, embedded ... or queried directly (an embedded object can only be retrieved using a reference from its containing |
