9 | Literals in JPQL and Criteria Queries); // String literals: Expression<String> empty = cb.literal(""); Expression<String> jpa = cb |
9 | JPA Query Expressions (JPQL / Criteria): =, <>, <, <=,>, >=, IS [NOT] NULL, [NOT] BETWEEN, including Collection operators: [NOT] IN, IS [NOT] EMPTY, [NOT |
9 | javax.persistence.criteria.CriteriaBuilder Predicate isEmpty( Expression<C> collection) Create a predicate that tests whether a collection is empty. Create a predicate that tests whether a collection is empty. Parameters: collection - expression Returns: is-empty predicate Since: JPA 2.0 Predicate isFalse( Expression<Boolean> x) Create |
6 | javax.persistence.metamodel.MappedSuperclassType the attributes declared by the managed type. Return the attributes declared by the managed type. Returns empty ... empty set if the managed type has no declared multi-valued attributes. Returns: declared Collection ... . Return the single-valued attributes declared by the managed type. Returns empty set if the managed type |
6 | javax.persistence.metamodel.IdentifiableType the managed type. Returns empty set if the managed type has no declared attributes. Returns: declared ... by the managed type. Returns empty set if the managed type has no declared multi-valued attributes ... empty set if the managed type has no declared single-valued attributes. Returns: declared single |
0 | [ODB1] Chapter 8 - ObjectDB Server="20" diskspace="20m" /> </dir> </user> Three attributes are changed. The empty address |
0 | [ODB1] Chapter 5 - JDO Connections, empty database at that location. This behavior is an ObjectDB extension. JDO does not define a standard |
0 | [ODB1] Chapter 4 - JDO Metadata field, empty collection, 0 size array, and so on). primary-key The primary-key attribute, defined in |
0 | [ODB1] Chapter 3 - Persistent Classes interface with all the four methods, keeping the methods that are irrelevant empty. For example |
0 | [ODB1] Chapter 7 - JDOQL Queries can even be constructed by an empty newQuery() form: Query newQuery(); However, a candidate collection |
