About float


JPA Persistable Types

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


Database Schema Evolution

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


Cannot sort descending, when ordering by caluculated float in a method

Hi, I have found an issue in ordering by a method. I have two entities : Invoice and InvoiceItem. public class InvoiceItem{ ..     private float price;     private float amount; .. }   public class Invoice{ ... public class InvoiceItem { private float price ; private float amount ; .. }   public class Invoice ...


Performance in large transactions

Hello, we have a performance problem when we use a large transaction. Let's do exactly the same in several transactions the ObjectDB works much faster. In our use case, we create many new entities and between the creations we call a select query. The execution of the query becomes slower at each iteration. (In the query, we search for an item of type Entity2. However, there is only one entity.)   Pseudocode for the fast and the slow solution FAST: ... ; }   private static List<Float> createFloatArray ( float value ) { int values = 1 ; ...


getFloatField(pc, field, currentValue)

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


setFloatField(pc, field, currentValue, newValue)

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


Pre-detach loading: retrieval by navigation not working in if statement

objectdb-2.6.3_04 JDK1.7 VM option at runtime: -javaagent:lib/objectdb.jar Experimental mode: objectdb.temp.no-detach NOT USED ... has a property 'v_NLA' which is a "deep" Float value wrapper FloatQuantity entity. This is @OneToOne with explicit ... fetch. - A FloatQuantity entity wraps a simple Float property 'value'. - (Also, the getL_LightingZone() ...



This interface is the point of contact between managed instances of PersistenceCapable classes and the JDO implementation.(Interface of JDO)



Typecast.(Method of javax.persistence.criteria.CriteriaBuilder)



Fetch one field from the field manager.(Method of javax.jdo.spi.PersistenceCapable.ObjectIdFieldSupplier)