Fast Object Database for Java - with JPA/JDO support

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Object belongs to another EntityManager - ERROR

.service(VaadinServlet.java:238) 10:29:15,006 ERROR [stderr] (http--10.23.3.98-8081-5) at javax.servlet
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What are the steps of creating small web app?

Hello guys, I have a question about creating small new web application, I am almost done with researching and studying and I have covered all the important concepts e.g. # Starting from web technologies: HTML, CSS, JS, JQuery. # Moving to Java Technologies: Core Java, Servlet, Managed Beans, JSF
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UserException - Object User#2 belongs to another EntityManager

.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.ocpsoft.rewrite.servlet.RewriteFilter
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Attempt to begin a new transaction when a transaction is active

it from fulfilling this request. exception javax.servlet.ServletException: com.objectdb.o
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objectDB for J2me

Hi, can i use objectDB in j2me environment? i succeeded to call a remote DB using "java mobile" via "servlets". how can i do so on ObjectDB? does java mobile (say netBeans) accept / support objectDB? thanks! saeid saeid sorury J2ME is not supported by ObjectDB 2. ObjectDB 1 had support of J2ME CDC
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Problem upgrading

.servlet.http.HttpServlet.service(HttpServlet.java:729) [tomcat-embed-core-8.0.28.jar:8.0.28] at org
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app.jelastic.eapps.com and objectdb

It seems that this web hosting service doesn't support objectdb and that is frustrating. Does anyone know a way around this? pls help a brother... elnas Nasiru Aliu Aboki You should be able to use ObjectDB on any real VPS, apparently including on eapps.com. Are you able to run Java and servlets
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Visibility of changes in Transaction is not visible to a JPA QL Query

I have two simple Entities ( see attachment ) and a simple SLSB with container managed transactions which is called by a trivial servlet. Inside a UserTransaction I add a number of items then check to see that they have been added long newTotal = -1;   try {    InitialContext context = new
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Integration

.datanucleus.org/servlet/jira/browse/NUCJPA-22 seems they ran into the same problem? just guessing here if i
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Optimistic locking: prevent version increment on entity collection attribute

. Also, each of my calls to the server is made in a transaction (the entry point in the servlet

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.

Need Help?

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