Internal Website Search

) at com.sun.proxy.$Proxy13.getMetamodel(Unknown Source ) at org.springframework. data .jpa.repository ... ) at org.springframework. data .jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:56) at org.springframework. data .jpa.repository

Hi What is the way to extract data from ObjectDB to relational databases (Oracle). We need to feed an Oracle database with data for reporting/datawarehosing. Should JPQL be used or is there some ... , so you will have to migrate data using your own code. Notice that you should be able to use ObjectDB with BIRT to produce

; Therefore we do the bugfix backporting ourself. This would not have be possible if db4o was close source .  ... . However we do have concernes in relation to your close source policy. Do you have any plans to open source ObjectDB ?  /Peter Lerche EasySpeedy.com lsPeter Peter Sorry, currently there are no plans to open source ObjectDB. support Support

= pmf.getPersistenceManager(); I am getting an error Source attachment does not contain source for File PMF.class. I had added the zip file jdo_2.2.zip as source . Please help need to complete assg in ... am trying to debug code snippet mentioned above in Eclipse it asks me to provide source code at debug

Is ObjectDB Open Source ? If not, why not? Are there any plans to start becoming more open source ? ThreaT Ashton Hogan ObjectDB is not open source and currently there are no plans to make it open source . support Support

I'm just starting to work on small Open Source project. Currently I'm selecting suitable persistence layer. ObjectDB looks like a very good fit, but I can't justify buying license for 500 ... of less restrictive ObjectDB license for Open Source project.  Thank you for your answer.  

and other files: Annotations not supported in -source1.3 (use - source 5 or higher ..) Generics not supported in -source1.3 (use - source 5 or higher ..) (Note that the version of Java I ran Maven as

Source control of database

Refresh data in application after database data has changed

, which are used to retrieve data from the database, DELETE queries do not retrieve data from

when the object data  model is complex. See JPA benchmark results...   Reduce development time. Improve ... Persistence API (JPA) Java Data Objects (JDO) Using a standard Java API (JPA / JDO) provides many benefits

JPA Entity classes are user defined classes whose instances can be stored in a database. To store data in an ObjectDB database using JPA you have to define entity classes that represent your application data object model. This chapter explains how to define and use entity classes. 

to the server data root path. Connection URL Parameters The following parameters are supported as ... of losing data - the drop  parameter is ignored unless the database file name extension indicates

(but standard Java and JDOQL) expressions: c.president == null c.president != null Comparable Data Types Comparison is supported for values of the following data types: Values of numeric types

to retrieve data from the database, UPDATE queries do not retrieve data from the database

; The element To meet memory constraints ObjectDB can use temporary files when processing large data ... is much faster than using temporary files. Therefore, temporary files are only used for data that exceeds

several other methods for accessing the result data . CriteriaBuilder's construct JPQL user defined

. If the purpose of the recording is data durability it might be useful to keep the recording directory

, under the server data root directory. Starting a new replication of an existing master database

, but not limited to loss of revenue, profit or data ) however caused and regardless of the theory

of the Java Data Objects (JDO) API than competing object databases. By using a standard API such as JPA

, substring, ... ). Data expressions ( currentDate , currentTime , currentTimestamp ). Collection

for every index. A BTree is an ordered map data structure that ObjectDB maintains in the file

. Unlike most other JPQL components, String literals (which represent data ) are case sensitive, so 'abc

multiple values (even for a simple data structure such as a collection of strings). In addition

fresh database file and then copying all the recoverable data in the corrupted database file

ObjectDB is an Object Oriented Database Management System (ODBMS). It provides all the standard database management services (storage and retrieval, transactions, lock management, query processing, etc.), but it uses an object oriented model to store and manage data . You can easily store ordinary

must be specified explicitly in the configuration to avoid data loss. The Schema Update section in chapter 6

To access relational databases using the Java Persistence API (JPA) you will need an Object Relational Mapping (ORM) tool, such as Hibernate, TopLink, EclipseLink, Open JPA or DataNucleus. The DataNucleus ORM implementation supports also the Java Data Objects (JDO) API. ObjectDB is a full featured

JPA 2 supports both optimistic locking and pessimistic locking . Locking is essential to avoid update collisions resulting from simultaneous updates to the same data by two concurrent users. Locking in ObjectDB (and in JPA) is always at the database object level, i.e. each database object

, damages for loss of data or profit, or due to business interruption,) arising out of the use or

ObjectDB Software develops, markets and supports the ObjectDB Object-Oriented Database Management System (ODBMS). ObjectDB Software is the market leader in providing a very high performance persistence solution for Java, based on the Java Persistence API (JPA) and the Java Data Objects (JDO

clauses are explained: ObjectDB also supports the Java Data Objects (JDO) Query Language (JDOQL

This tutorial demonstrates how to create and run a simple JPA application. The demonstrated application uses JPA to store and retrieve simple  Point entity objects, where each  Point has two persistent fields -  x and  y . If you already know JPA - the source code

of the new source file with the following code: package guest; import java.io.IOException; import javax

to create the new class. Use copy and paste to replace the new source file content with the following

to create the new listener class. Now replace the content of the new source file with the following

to create the new session bean (EJB) class. Now replace the content of the new source file

the new servlet class. Now replace the content of the new source file with the following code: package

of the new source file with the following code: package guest; import java.io.IOException; import java

with a transient modifier in the Java source (useful for defining fields as transient in serialization

database object. This type of viewer is useful for viewing the data of a simple object model. In ... you can refresh the cache and the viewer windows using the "File | Refresh Data " menu command. 9.3 

;Persistent Classes Only classes that represent data in the database should be declared persistent ... because it might require loading additional data and objects from the database (as part of transparent

;pc) Delete the persistent instance from the data store. This method must be called in an active transaction. The data store object will be removed at commit. Unlike makePersistent , which makes the closure of the instance persistent, the closure of the instance is not deleted from the data store

NotSerializableException. Since: JDO 2.0 Public Constructors InstanceLifecycleEvent (Object  source , int type) Creates a new event object with the specified source and type . Parameters: source ... (Object  source , int type, Object target) Creates a new event object

time. When using data store transactions (which is the default in ObjectDB), there is a strong

Welcome to the ObjectDB for Java/JDO Developer's Guide. Here you can learn how to develop database applications using ObjectDB and JDO (Java Data Objects), the revolutionary database programming technology by Sun Microsystems. The main purpose of this guide is to familiarise you with ObjectDB

You can use ObjectDB with either the Java Persistence API (JPA) or the Java Data Objects (JDO) API. Both share similar architecture, design and abilities. When to prefer JPA JPA is more commonly used. Therefore, it might be the first choice for most new applications. You can use JPA as

of the PersistenceManagerFactory : // Using the setter methods: pmf.setConnectionURL("objectdb://localhost/ data .odb

Compliant ObjectDB is compliant with the JDO (Java Data Objects) standard, developed by Sun