ObjectDB Database Search

, which matches exactly post # 1 on this thread. It seems that this log file has many query executions (21 ... that. Please refer to my first post on https://www.objectdb.com/forum/2857 for details. MOH-SL ... in the future if you follow the posting instruction and post minimal examples (for example

Support Hello, in the example of post #3, we get a different error message than in post # 1 . I had not ... of post # 1 In the example (Eclipse OSGi Example #2) I have the ObjectDB removed from the bundle "com.btc.ep.base.bl.impl". Now we get the error message from post # 1 . java.lang.NoClassDefFoundError: com

Logical operators in JPQL and JPA criteria queries combine simple Boolean expressions to form complex expressions. Logical operators ObjectDB supports two sets of logical operators, as shown in the following table: Set 1 : JPQL / SQL Set 2: Java / JDO AND && OR || NOT ! JPQL uses SQL notation

) is evaluated to 1 .414213562373095 The SQRT function takes as an argument a numeric value of any

Jakarta Persistence (JPA) represents queries with two interfaces: the Query interface, which was the only query interface in JPA 1 , and the TypedQuery interface, which was introduced in JPA 2. The TypedQuery interface extends the Query interface. Use the Query interface primarily when the query

: Employee employee = em. find (Employee.class, 1 ); em. getTransaction (). begin (); em. remove (employee

Most JPQL queries use at least one comparison operator in their WHERE clause. Comparison operators ObjectDB supports two sets of comparison operators, as shown in the following table: Set 1 : JPQL/SQL Set 2: Java/JDO Less Than Less Than or Equal To = Equal To = == Not Equal To != The main

COUNT(c) 1 ORDER BY c.currency In the query above, the ORDER BY clause sorts the results by

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( long ). The primary key of the first entity is 1 , the second is 2, and so on. Primary key values

from Bindable Returns: Java type. Since: Jakarta Persistence (JPA) 1 .0 BindableType getBindableType ... type. Since: Jakarta Persistence (JPA) 1 .0 CollectionType getCollectionType () Return the collection type. Inherited from PluralAttribute Returns: collection type. Since: Jakarta Persistence (JPA) 1 .0

attribute is returned. Inherited from Bindable Returns: Java type. Since: Jakarta Persistence (JPA) 1 .0 ... Bindable Returns: bindable type. Since: Jakarta Persistence (JPA) 1 .0 CollectionType ... . Since: Jakarta Persistence (JPA) 1 .0 ManagedType getDeclaringType () Return the managed type representing

Bindable Returns: Java type. Since: Jakarta Persistence (JPA) 1 .0 BindableType getBindableType ... . Since: Jakarta Persistence (JPA) 1 .0 CollectionType getCollectionType () Return the collection type. Inherited from PluralAttribute Returns: collection type. Since: Jakarta Persistence (JPA) 1 .0

) 1 .0 BindableType getBindableType () Return the bindable type of the represented object. Inherited from Bindable Returns: bindable type. Since: Jakarta Persistence (JPA) 1 .0 CollectionType getCollectionType () Return the collection type. Returns: collection type. Since: Jakarta Persistence (JPA) 1 .0

.properties.doubleValue FROM Action a WHERE a.type = 0 and a.subType = 3 and a.state = 3 and a.endDate = ? 1 ... .objectNameUpper = 'SETUP' and a.objectsInCharge.linkedObjects.type = 1 ) and (a.objectsInCharge ... we can see that this index is not used: Query Plan Description ====================== Step 1 : Process

Persistence (JPA) 1 .0 Annotation Elements String name (Optional) The name of the join table. Defaults ... . Default: "" Since: Jakarta Persistence (JPA) 1 .0 String catalog (Optional) The catalog of the table. Defaults to the default catalog. Default: "" Since: Jakarta Persistence (JPA) 1 .0 String schema

CollectionTable ForeignKey Since: Jakarta Persistence (JPA) 1 .0 Annotation Elements String name (Optional ... Persistence (JPA) 1 .0 String referencedColumnName (Optional) The name of the column referenced by ... of the referenced table. Default: "" Since: Jakarta Persistence (JPA) 1 .0 boolean unique (Optional

relationship field or property; " _ "; " KEY ". Default: "" Since: Jakarta Persistence (JPA) 1 .0 boolean ... and to constraints specified at the table level. Default: false Since: Jakarta Persistence (JPA) 1 .0 ... Persistence (JPA) 1 .0 boolean insertable (Optional) Whether the column is included in SQL INSERT

and the default values apply. Example 1 : @Entity public class Company { @Id int id; ... @OneToMany ... ; " _ "; " KEY ". Default: "" Since: Jakarta Persistence (JPA) 1 .0 String referencedColumnName (Optional ... the primary key column of the referenced table. Default: "" Since: Jakarta Persistence (JPA) 1 .0 boolean

Since: Jakarta Persistence (JPA) 1 .0 The JPA Connections and Transactions article explains how to use ... graph entityGraph - entity graph Since: Jakarta Persistence (JPA) 2. 1 void addNamedQuery ( String ... (JPA) 2. 1 R callInTransaction ( Function work ) Create a new application-managed EntityManager

: the resulting fetch join. Since: Jakarta Persistence (JPA) 1 .0 Fetch fetch ( SingularAttribute ... Returns: the resulting fetch join. Since: Jakarta Persistence (JPA) 1 .0 Fetch fetch ( PluralAttribute ... . Since: Jakarta Persistence (JPA) 1 .0 Fetch fetch ( PluralAttribute attribute , JoinType jt ) Create a fetch

must have a single root. Since: Jakarta Persistence (JPA) 2. 1 Public Instance Methods Root from ( Class ... (JPA) 1 .0 Root from ( EntityType entity ) Create and add a query root corresponding to the entity ... corresponding to the given entity. Since: Jakarta Persistence (JPA) 1 .0 Set getParameters () Return

day of the month, numbered from 1 . Since: Jakarta Persistence (JPA) 1 .0 MONTH The calendar month of the year, numbered from 1 . Since: Jakarta Persistence (JPA) 1 .0 QUARTER The calendar quarter, numbered from 1 to 4. Since: Jakarta Persistence (JPA) 1 .0 WEEK The ISO-8601 week number. Since: Jakarta

, and have the same names and types as the referenced primary key columns of the primary table. Example 1 : Single ... (JPA) 1 .0 Annotation Elements String name (Required) The name of the table. Since: Jakarta Persistence (JPA) 1 .0 String catalog (Optional) The catalog of the table. Defaults to the default catalog

, Serializable Since: Jakarta Persistence (JPA) 1 .0 Enum Constants BASIC Basic attribute Since: Jakarta Persistence (JPA) 1 .0 ELEMENT_COLLECTION Element collection Since: Jakarta Persistence (JPA) 1 .0 EMBEDDED Embeddable class attribute Since: Jakarta Persistence (JPA) 1 .0 MANY_TO_MANY Many-to-many association

.lock(Object, LockModeType, java.util.Map) Since: Jakarta Persistence (JPA) 1 .0 Public Constructors ... its detail message. Since: Jakarta Persistence (JPA) 1 .0 OptimisticLockException ( String message ... - the detail message. Since: Jakarta Persistence (JPA) 1 .0 OptimisticLockException ( String message

. Since: Jakarta Persistence (JPA) 1 .0 PessimisticLockException ( String message ) Constructs a new ... . Since: Jakarta Persistence (JPA) 1 .0 PessimisticLockException ( String message , Throwable cause ... . Parameters: cause - the cause. message - the detail message. Since: Jakarta Persistence (JPA) 1 .0

exception with null as its detail message. Since: Jakarta Persistence (JPA) 1 .0 LockTimeoutException ... . Parameters: message - the detail message. Since: Jakarta Persistence (JPA) 1 .0 LockTimeoutException ... Persistence (JPA) 1 .0 LockTimeoutException ( Throwable cause ) Constructs a new

the EntityTransaction interface. Since: Jakarta Persistence (JPA) 1 .0 The JPA Connections ... (JPA) 1 .0 void commit () Commit the current resource transaction, writing any unflushed changes ... - if the commit fails. Since: Jakarta Persistence (JPA) 1 .0 boolean getRollbackOnly () Determine

. Returns: declaring type. Since: Jakarta Persistence (JPA) 1 .0 Member getJavaMember () Return ... .Member . Since: Jakarta Persistence (JPA) 1 .0 Class getJavaType () Return the Java type of the represented attribute. Returns: Java type. Since: Jakarta Persistence (JPA) 1 .0 String getName () Return

Persistence (JPA) 1 .0 X get ( String alias , Class type ) Get the value of the tuple element ... to the specified type. Since: Jakarta Persistence (JPA) 1 .0 Object get ( String alias ) Get the value ... correspond to an element in the query result tuple. Since: Jakarta Persistence (JPA) 1 .0 X get ( int

Persistence (JPA) 1 .0 Fetch fetch ( SingularAttribute attribute , JoinType jt ) Create a fetch join ... attribute - target of the join Returns: the resulting fetch join. Since: Jakarta Persistence (JPA) 1 .0 ... . Since: Jakarta Persistence (JPA) 1 .0 Fetch fetch ( PluralAttribute attribute , JoinType jt ) Create

an underscore. Default: "" Since: Jakarta Persistence (JPA) 1 .0 String catalog (Optional) The catalog ... (JPA) 1 .0 String schema (Optional) The schema of the table. If not specified, the default schema for the user is used. Default: "" Since: Jakarta Persistence (JPA) 1 .0 JoinColumn[] joinColumns

with null as its detail message. Since: Jakarta Persistence (JPA) 1 .0 QueryTimeoutException ( String ... . Parameters: message - the detail message. Since: Jakarta Persistence (JPA) 1 .0 QueryTimeoutException ... Persistence (JPA) 1 .0 QueryTimeoutException ( Throwable cause ) Constructs a new

StoredProcedureParameter Since: Jakarta Persistence (JPA) 2. 1 Annotation Elements String name The name used to refer ... . Since: Jakarta Persistence (JPA) 1 .0 String procedureName The name of the stored procedure in the database. Since: Jakarta Persistence (JPA) 1 .0 StoredProcedureParameter[] parameters Information

property. Example 1 : One-to-one association that maps a foreign key column // On Customer class: @OneToOne ... assignedTo; ... } Since: Jakarta Persistence (JPA) 1 .0 Annotation Elements Class targetEntity (Optional ... property that stores the association. Default: void/class Since: Jakarta Persistence (JPA) 1 .0 CascadeType

Persistence (JPA) 1 .0 The Auto Generated Values article explains how to use GenerationType . Enum ... . Since: Jakarta Persistence (JPA) 1 .0 IDENTITY Indicates that the persistence provider must assign ... Long , Integer , long , or int . Since: Jakarta Persistence (JPA) 1 .0 SEQUENCE Indicates

notation is the name of the respective embedded field or property. Example 1 : // In Customer class ... ) 1 .0 Annotation Elements Class targetEntity (Optional) The entity class that is the target ... using generics. Default: void/class Since: Jakarta Persistence (JPA) 1 .0 CascadeType[] cascade

with the dot notation is the name of the respective embedded field or property. Example 1 : @ManyToOne(optional ... = "jobInfo.pm") Collection manages; } Since: Jakarta Persistence (JPA) 1 .0 Annotation Elements Class ... ) 1 .0 CascadeType[] cascade (Optional) The operations that must be cascaded to the target

(just download and extract). The tutorial was written for NetBeans 6.9. 1 but it should work

/. This Spring web application can also run with GlassFish 3.0. 1 , with a small change in the 

, such as GlassFish 3.0. 1 or JBoss AS 6. Another tutorial shows how to use JPA in a Spring MVC Framework

This tutorial demonstrates how to create and run a full Java EE 6 MVC (Model View Controller) web application using GlassFish, ObjectDB and JPA. Since this web application uses Java EE 6 EJB (session beans) it requires a full Java EE 6 application server, such as GlassFish 3.0. 1 or JBoss AS 6

for NetBeans 6.9. 1 but it should work with other NetBeans versions as well (dialog boxes and menus might look

(just download and extract). The tutorial was written for Eclipse 3.6. 1 but it should work

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

. The sample application is also explained in details in  Chapter 1 of the  ObjectDB Manual , but if you prefer

). The tutorial was written for NetBeans 6.9. 1 but it should work with other NetBeans versions as

/Guestbook/. This tutorial should also run with GlassFish 3.0. 1 , with a small change in

and the other resources (possibly in a jar file). 4. 1   JDO Metadata Files During JDO enhancement and later