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Manual
14

JPA Persistable Types

their ordinal numbers. Caution is required when modifying an enum type that is already in use in ... numbers). Alternatively, enum values can be represented internally by their names. In that case, the names ... , values of the color1 and color2 fields are stored as ordinal numbers (i.e. 0, 1, 2) while values
Manual
14

Query Parameters in JPA [2011-04-01]

(?) followed by a positive int number. Besides the notation difference, named parameters and ordinal ... interface Parameter) rather than by names or numbers. See the Parameters in Criteria Queries section ... of which are overridden in TypedQuery. That large number of methods is not typical to JPA, which generally
Manual
14

Query Parameters in JPA

(?) followed by a positive int number. Besides the notation difference, named parameters and ordinal ... interface Parameter) rather than by names or numbers. See the Parameters in Criteria Queries section ... of which are overridden in TypedQuery. That large number of methods is not typical to JPA, which generally
Manual
11

WHERE clause (JPQL / Criteria API)

-variable queries the number of tuples for iteration might be very large even if the database is small ... a variable number of arguments of Predicate type and uses an AND conjunction as the WHERE clause content
Manual
11

ORDER BY clause (JPQL / Criteria API)

, any JPQL expression whose type is comparable (i.e. numbers, strings and date values) and is derived ... "))); Unlike other methods for setting criteria query clauses - the orderBy method takes a variable number
Tutorial
11

Step 6: Design a BIRT Report Table

In this final step we will add a simple table to the report: Open the [Insert Table] dialog box by dragging a Table from the [Palette] window and dropping it on the report design (.rptdesign) layout. Set the column number to 2, number of details to 1, select the data set (e.g. Points by X) in
Manual
11

JPA Primary Key

64 bit number (long) that is set automatically by ObjectDB for every new entity object that is stored ... continuously and can be collected by accessing a minimum number of database pages. On the other end
Manual
11

Collections in JPQL and Criteria Queries

if the collection is empty and TRUE otherwise. SIZE The SIZE(collection) function returns the number of elements in a specified collection. For example: SIZE(c.languages) is evaluated to the number
Manual
11

JPA Entity Fields

maintains a version number for every entity object. The initial version of a new entity object (when stored ... is modified its version number is automatically increased by one. Version fields are used in conjunction
Manual
11

Running JPA Queries [2011-09-21]

object reflecting the number of Country objects in the database: TypedQuery query = em ... - the executeUpdate method returns the number of objects that have been updated or deleted by