12 | Comparison in JPQL and Criteria API for building these expressions, as shown in the following examples: // Create String path ... = cb.parameter(String.class); // Create Integer path and parameter expressions: Expression |
12 | Online Backup database file using the code above could generate a backup whose full path is c:\objectdb\backup ... parameter it represents a path relative to the ObjectDB home directory, and in client-server mode |
12 | javax.persistence.criteria.ListJoin>, From<Z,E>, Join<Z,E>, Path<E>, PluralJoin<Z,List<E>,E>, Selection<E>, TupleElement<E> The ListJoin ... - join type Returns: the resulting fetch join Since: JPA 2.0 Path<Y> get(String attributeName) Create a path corresponding to the referenced attribute. Create a path corresponding to the referenced |
12 | javax.persistence.criteria.SetJoin>, From<Z,E>, Join<Z,E>, Path<E>, PluralJoin<Z,Set<E>,E>, Selection<E>, TupleElement<E> The SetJoin ... - join type Returns: the resulting fetch join Since: JPA 2.0 Path<Y> get(String attributeName) Create a path corresponding to the referenced attribute. Create a path corresponding to the referenced |
12 | javax.persistence.criteria.CollectionJoin>, FetchParent<Z,E>, From<Z,E>, Join<Z,E>, Path<E>, PluralJoin<Z,Collection<E>,E>, Selection<E>, TupleElement<E ... - target of the join jt - join type Returns: the resulting fetch join Since: JPA 2.0 Path<Y> get(String attributeName) Create a path corresponding to the referenced attribute. Create a path |
8 | ORDER BY clause (JPQL / Criteria API) are more restrictive. Path expressions are supported by all the JPA implementations but support for other JPQL |
8 | Date and Time in JPQL and Criteria QueriesDate and time expressions may appear in JPQL queries: as date and time literals - e.g. {d '2011-12-31'}, {t '23:59:59'}. as parameters - when date and time values are assigned as arguments. as path expressions - in navigation to persistent date and time fields. as results of predefined JPQL current |
1 | Step 1: Create a Web Project the path to Tomcat 6 (which has to be downloaded separately) . Click the Finish button to create |
1 | Step 1: Create a Java Project the objectdb.jar file, using: Right Clicking on the Project > Properties > Java Build Path > Libraries > Add |
1 | [ODB1] Chapter 3 - Persistent Classes files, storing only the file names or paths in the database). Static and final fields ... classpath for input user classes -d output path for enhanced classes -s include |
