About SELECT

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Manual
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UPDATE SET Queries in JPA/JPQL [2011-11-22]

an alternative way for updating entity objects. Unlike SELECT queries, which are used to retrieve data from ... method returns the number of objects that have been modified by the query. Selective Update UPDATE ... , which is essential for updating selected entity objects, is supported. For example, the following query updates
Tutorial
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Step 5: Design a BIRT Report Chart

In this step we will add a simple chart to the report: Open the [New Chart] dialog box by dragging a Chart from the [Palette] window and dropping it on the report design (.rptdesign) layout. In the [Select Chart Type] tab select Tube as the chart type and click Next. In the [Select Data] tab
Manual
11

Logical Operators in JPQL and Criteria API

retrieves countries whose population and area (both) exceed specified limits: SELECT c FROM ... The following query retrieves countries whose population or area exceeds a specified limit: SELECT c FROM ... query retrieves all the countries whose population does not exceed a specified limit: SELECT c FROM
Tutorial
11

Step 4: Create an ObjectDB Data Set

and selecting New Data Set. Select the data source that was created in the previous step (e.g. ObjectDB ... a specified range: SELECT p.x as x, p.y as y FROM Point p WHERE p.x BETWEEN :low AND :high Use copy
Tutorial
11

Java EE 6 JPA Tutorial - NetBeans Project

: Select File > Open Project.... Select the guestbook-jee6 directory and click Open Project. Run the project: Select Run > Run Main Project... (or F6). Choose or define the server and click OK
Tutorial
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Step 3: Add a Main Class

: Query q1 = em.createQuery("SELECT COUNT(p) FROM Point p"); System.out.println("Total ... .createQuery("SELECT AVG(p.x) FROM Point p"); System.out.println("Average X: " + q2 ... > query =  em.createQuery("SELECT p FROM Point p", Point.class); List results
Manual
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JPA Entity Fields

the Department entity): SELECT e FROM Employee e WHERE e.department = :d The mappedBy element defines ... ; } In that case the employees field is filled with the results of the following query: SELECT e FROM ... results by specifying a selected key field using the MapKey annotation: @Entity public class
JPA Doc
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javax.persistence.criteria.Subquery

>, Selection, TupleElement The Subquery interface defines functionality that is specific to subqueries. A subquery has an expression as its selection item. Since: JPA 2.0 Selection alias(String name) Assigns an alias to the selection item. Assigns an alias to the selection item. Once assigned
JPA Doc
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javax.persistence.criteria.CriteriaBuilder

selections, expressions, predicates, orderings. Note that Predicate is used instead of Expression in ... CompoundSelection array( Selection... selections) Create an array-valued selection item. Create an array-valued selection item. Parameters: selections - selection items Returns: array-valued
Tutorial
9

Step 2: Entity Class and Persistence Unit

) and selecting New > Entity Class... (or New > Other... > Persistence > Entity Class and clicking ... a text editor (by right clicking and selecting Edit or by double click and then moving to the Source