About double

manual

JPA Persistable Types

Explains how JPA manages types, including entity classes, embeddable classes, primitive types, wrappers, string, date, enum, collections and maps.... , short , char , int , long , float and double . Equivalent wrapper classes from package java.lang: ... , Character , Integer , Long , Float and Double . java.math.BigInteger , java.math.BigDecimal . ...

 
manual

Database Schema Evolution

Explains how ObjectDB handles automatically schema changes.... , short , char , int , long , float , double , Byte , Short , Character , Integer , Long , Float , Double , BigInteger , BigDecimal and enum values that are stored as ...

 
forum_thread

Items in list are doubled, when the entity class is not enhanced

Dear all, I have a problem with adding items (entities) into other entity list. When the classes are not enhanced, added items are doubled. Here is an example: #1 2011-06-09 08:24 Dear all, I have a problem with adding items (entities) into other entity list. When the classes are not ...

 
forum_thread

Double persist of Entity field with Cascade.ALL

I am building a JavaEE application using Netbeans 7.0.1, Glassfish 3.1 and ObjectDB 2.3.3. I have a Book class with entity field Chapter which has a CascadeType.ALL property. The Book fields are as follows: @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; private String bookTitle; @OneToMany(cascade= CascadeType.ALL, fetch= FetchType.EAGER) private List<Chapter> chapters; The Chapter fields are as follows: ... table correctly recorded but the Chapter table would have double entry of same record. Netbeans Project ...

 
forum_thread

Geospatial functions

Hi, is it possible to implement geospatial functions (e.g. calculating distance between too points given latitude/longitude) ?Normally you would calculate the distance like: ... ?Normally you would calculate the distance like: double cx = Math. toRadians ( fromLat ) ; double cy = Math. toRadians ( fromLon ) ; double ...

 
forum_thread

Problem with Criteria Querys

Hi, i am having problems running following code...   ... begin ( ) ; for ( double i = 0.0 ; i<10.0 ; i ++ ) { ... select ( d ) ; ParameterExpression<Double> p1 = cb. parameter ( Double. class ) ; ...

 
api-jdo

getDoubleField(pc, field, currentValue)

Return the value for the field.(Method of javax.jdo.spi.StateManager)

 
api-jdo

setDoubleField(pc, field, currentValue, newValue)

Mark the field as modified by the user.(Method of javax.jdo.spi.StateManager)

 
api-jpa

javax.persistence.criteria.CriteriaBuilder

Used to construct criteria queries, compound selections, expressions, predicates, orderings.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.Expression

Type for query expressions.(Interface of JPA)