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61

Storing JPA Entity Objects

().commit(); Splitting a batch store into multiple transactions is more efficient than using
29

Column.insertable

Annotation Element javax.persistence.Column boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default value: true Since: JPA 1.0
29

MapKeyColumn.insertable

Annotation Element javax.persistence.MapKeyColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default value: true Since: JPA 2.0
29

JoinColumn.insertable

Annotation Element javax.persistence.JoinColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default value: true Since: JPA 1.0
29

OrderColumn.insertable

Annotation Element javax.persistence.OrderColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default value: true Since: JPA 2.0
29

MapKeyJoinColumn.insertable

Annotation Element javax.persistence.MapKeyJoinColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default value: true Since: JPA 2.0
23

Warmup ( preLoad all table rows into memory )

when my software boots up. 2-) Also for speed up I am inserting a message into table. But within 1 or 10 seconds i may query the same message key. I can wrap with guava cachebuilder to prevent writing into ... Hi , I have 3 questions for objectdb : 1-) How can i preload all table rows into memory in objectdb
19

How to define database structure and insert some initial objects from scratch

a script? In SQL world we have scripts like "insert into..." - Can we use main objectdb.jar library as
12

javax.persistence.CacheStoreMode

BYPASS Don't insert into cache. Don't insert into cache. Since: JPA 2.0 CacheStoreMode REFRESH Insert/update entity data into cache when read from database and when committed into database. Insert ... . Insert/update entity data into cache when read from database and when committed into database
11

use of Singleton into tomcat

hi all. i would write a class singleton that encapsulate the entitymanagerFACTORY into ... a Ejb!!!!!!!!!). into tomcat it not possible use ejbs............. i have to manage the concurrency ... of singleton for manage all operation on database. I get a instance of it into multiple servlet. but into

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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