ObjectDB Database Search

(select id from TTT s group id having count(id) 1 ) I dont know how to do this using JPQL, but I use ... .objectdb.jpa.JpaQuery.getResultList(JpaQuery.java:627) ... 1 more Caused by: java.lang.OutOfMemoryError ... splitting the query into two queries - first execute the inner query and then use the result collection as

, SharedCalendar c2 INNER JOIN c1.events AS event1 INNER JOIN c2.original.events AS event2 WHERE c1.id=? 1 ... its id like: SELECT event FROM Calendar c1, SharedCalendar c2 INNER JOIN c1.events AS event INNER JOIN c2.original.events AS event WHERE c1.id=? 1 OR c2.id=? 1 Unfortunately this query returns no events

(see attachment),  // Compiled from UNM.java (version 1 .5 : 49.0, super bit) public final class com ... ; // Stack: 3, Locals: 1   UNM();     0  aload_0 [this]     1   iconst_ 1     2  ldc [ 1 ]     4  invokespecial com.objectdb.o.HTB(int

otherwise. Since: Jakarta Persistence (JPA) 1 .0 Public Instance Methods Selection alias ( String ... : selection item. Since: Jakarta Persistence (JPA) 1 .0 Expression as ( Class type ) Perform a typecast ... of the given type. See Also: .cast(Class) Since: Jakarta Persistence (JPA) 1 .0 Expression cast ( Class

. A CriteriaUpdate object must have a single root. Since: Jakarta Persistence (JPA) 2. 1 Public Instance ... . Since: Jakarta Persistence (JPA) 1 .0 Root from ( EntityType entity ) Create and add a query root ... of type X Returns: query root corresponding to the given entity. Since: Jakarta Persistence (JPA) 1 .0

The date part of a datetime. Since: Jakarta Persistence (JPA) 1 .0 DAY The calendar day of the month, numbered from 1 . Since: Jakarta Persistence (JPA) 1 .0 HOUR The hour of the day in 24-hour time, numbered from 0 to 23. Since: Jakarta Persistence (JPA) 1 .0 MINUTE The minute of the hour, numbered from

field. If no Column annotation is explicitly specified, the default values apply. Example 1 : @Column ... of type numeric or decimal . Since: Jakarta Persistence (JPA) 1 .0 Annotation Elements String name ... Persistence (JPA) 1 .0 boolean unique (Optional) Whether the column is a unique key

execution. See Also: TypedQuery StoredProcedureQuery Parameter Since: Jakarta Persistence (JPA) 1 .0 ... back. Since: Jakarta Persistence (JPA) 1 .0 CacheRetrieveMode getCacheRetrieveMode () The cache retrieval mode ... value set and only the statement is rolled back. Since: Jakarta Persistence (JPA) 1 .0 Stream

annotation. Example 1 : @Entity public class Employee { ... @TableGenerator( name = "empGen", table ... ", allocationSize = 1 ) @Id @GeneratedValue(strategy = TABLE, generator = "empGen") int id; ... } Example 2 ... ; ... } See Also: GeneratedValue Since: Jakarta Persistence (JPA) 1 .0 The Auto Generated Values article

Bindable Returns: Java type. Since: Jakarta Persistence (JPA) 1 .0 BindableType getBindableType ... . Since: Jakarta Persistence (JPA) 1 .0 ManagedType getDeclaringType () Return the managed type ... . Since: Jakarta Persistence (JPA) 1 .0 Member getJavaMember () Return the java.lang.reflect.Member

Persistence (JPA) 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 ... type. Since: Jakarta Persistence (JPA) 1 .0 ManagedType getDeclaringType () Return the managed type

Persistence (JPA) 1 .0 Expression as ( Class type ) Perform a typecast upon the expression, returning a new ... ) 1 .0 Expression cast ( Class type ) Cast this expression to the specified type, returning a new ... . Inherited from TupleElement Returns: alias. Since: Jakarta Persistence (JPA) 1 .0 List

of a new entity is 1 when it's stored in the database for the first time. In every transaction

the clear and flush methods together to save memory during large transactions: em. getTransaction (). begin (); for (int i = 1 ; i

of this agreement will be binding, unless in writing and signed by an authorized representative of each party. 1

). Therefore, the position of the first character is 1 . A value of zero ( 0 ) is returned if the substring is not

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

to integrate enhancement into the build process: ... ... ... org.codehaus.mojo exec-maven-plugin 1 .6.0

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

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

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

.6. 1 but it should work with other Eclipse versions as well (dialog boxes and menus might look

). This tutorial was written for Eclipse 3.6. 1 but it should work with other Eclipse versions as

(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