About between

forum_thread

Geospatial functions

Hi, is it possible to implement geospatial functions (e.g. calculating distance between too points given latitude/longitude) ?Normally you would calculate the distance like: ... implement geospatial functions (e.g. calculating distance between too points given latitude/longitude) ?Normally you would calculate the ...

 
forum_thread

Import data from MySQL

Hi, I tried the objectdb in my research, find it very easy to handle without setting up xml files. However, I cannot find the import/export functions between other database, then how can I transfer mysql data into objectdb? When I use explorer.exe to browse the database in objectdb, eclipse tells me another app occupy it, then how can objectdb support multi-thread? ... However, I cannot find the import/export functions between other database, then how can I transfer mysql data into objectdb? ...

 
forum_thread

Source control of database

Hi, I'm new with ObjectDB. I want to know how I can evolve my model, adding new fields, new classes, perform refactors between versions, etc... There is something like http://www.liquibase.org that can I use over ObjectDB? ... model, adding new fields, new classes, perform refactors between versions, etc... There is something like ...

 
issue

RDBMS-ObjectDB Replication

Replication between ObjectDB and RDBMS will enable managing the same synchronized data in ObjectDB and in an external relational database, using a JPA ORM provider. This could be useful in systems that must use an RDBMS for other purposes, but need better performance for specific tasks. For systems that already use JPA - this feature might enable using ObjectDB as a performance booster, without writing new code.... 14:31 Replication between ObjectDB and RDBMS will enable managing the same synchronized data in ...

 
tutorial

Step 4: Create an ObjectDB Data Set

Explains how to create an ObjectDB data set for BIRT reports.... , p . y AS y FROM Point p WHERE p . x BETWEEN :low AND :high Use copy and paste to enter the above ...

 
api-jdo

setFilter(filter)

Set the filter for the query.(Method of javax.jdo.Query)

 
api-jdo

compareTo(o)

Determine the ordering of identity objects.(Method of javax.jdo.identity.IntIdentity)

 
forum_thread

Evaluating ObjectDB for SaaS Application

We are currently evaluating objectdb for our SaaS(multi-tenant) product. It is a data intensive health care product . We would like to know the horizontal scalability options available. ... provides better performance because the coordination between the servers  is simpler and requires less networking operations. ...

 
forum_thread

Query in JPA2 with LEFT JOIN on INNER JOIN

select a.description, a.id, p1.description, p2.description,p3.description from action a left join action_profile ap1 on ap1.id_action=a.id inner join profile p1 on  ap1.id_profile=p1.id  and p1.name='?' left join action_profile ap2 on ap2.id_action=a.id inner join profile p2 on  ap2.id_profile=p2.id  and p2.name='?' where a.id =?;   Thanks   ... should consider using direct references (relationships) between entity objects, and then you would be able to use ordinary JOIN of ...

 
api-jdo

javax.jdo.identity.StringIdentity

This class is for identity with a single String field.(Class of JDO)