8 | SELECT clause (JPQL / Criteria API) Country AS c WHERE c.name LIKE 'I%' Both Italy and Ireland (whose name starts with 'I') use Euro as ... Country AS c WHERE c.name LIKE 'I%' The only difference between SELECT and SELECT DISTINCT |
8 | JPA Query Expressions (JPQL / Criteria)] MEMBER [OF] and the [NOT] LIKE operator. Logical operators: AND, OR, NOT. In addition, JPA queries ... , sqrt). String expressions (like, length, locate, lower, upper, concat, substring, ...). Data |
8 | Retrieving JPA Entity Objects: Employee employee = em.getReference(Employee.class, 1); The getReference method works like the find ... of the developer, it looks like the entire graph of objects is present in memory. This illusion |
7 | javax.persistence.criteria.CriteriaBuilder - expression y - expression Returns: less-than-or-equal predicate Since: JPA 2.0 Predicate like( Expression ... . Parameters: x - string expression pattern - string Returns: like predicate Since: JPA 2.0 Predicate like ... the given pattern. Parameters: x - string expression pattern - string expression Returns: like predicate |
6 | JPA Persistable Types, an entity class is like any other Java class. It can extend either another entity class or a non-entity |
6 | FROM clause (JPQL / Criteria API), INDEX, INNER, IS, JOIN, KEY, LEADING, LEFT, LENGTH, LIKE,LOCATE, LOWER, MAX, MEMBER, MIN, MOD, NEW |
1 | [ODB1] Chapter 6 - Persistent Objects, system types are embedded and user defined types (like the Address instance above) are not ... of view of the developer, it looks like the entire graph of objects is present in memory for his or ... as an argument to a method like makePersistent(...) or deletePersistent(...). The PersistenceManager |
1 | [ODB1] Chapter 3 - Persistent Classes the requirements described above, a persistent class is like any other Java class. It can include ... fields (persistent fields of types like int[] or Object[]). Any class in which a persistent array ... .* On the Fly JDO Enhancement Command line enhancement is useful for testing and for build scripts (like |
1 | [ODB1] Chapter 1 - About ObjectDB and JDO jar files with you. You can even run your application on small devices like PocketPC ... without the ability to explore, query and edit the database content visually, is like developing ... applications and advanced features, like remote database administration and manipulation. However, web |
0 | [ODB1] Chapter 4 - JDO Metadata as transactional, like f2 above, has similar behavior to transient because its value ... , cannot have a direct index, but fields of its embedded elements, like x, can have an index, as demonstrated |
