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Hello, whenever I re-deploy my web application in Sun Java System Web Server, I get the following exception and the application cannot run anymore. Any clue what I am doing wrong? I use the file-based db access (local to the web app, as described in your tutorial). Thanks for pointers! Best

Eclipse/JPA database tutorial

more details: Is it the console tutorial? a web tutorial? When exactly do you get the error message ... for the response. Its the web tutorial. I have attached the screenshot. Thank you. Sand Sandhya.V This URL ... ServletContextListener { In addition, the guest.jsp file was located in WEB-INF. You should move it up to WebContent

Problem on JPA Merge Entity.

is based on a web page (http://localhost:8080/ERGO_ObjectDB/) On this web page we can found 4 links

Guestbook Tutorial (Eclipse/Glassfish)

\eclipseApps\Guestbook\WEB-INF\db\guests.odb) is reset on occasions; I am not sure what set of events ... is currently located in a working directory that GlassFish may clean when the web application is redeployed

Is 2 level cache in use?

Hi, Is there any way to check, if 2 level cache is in use? Right now I've done two things: 1. objectdb.conf with cache size is placed in WEB-INF directory of my web application. 2. persistence.xml was modified with: <properties> <property name="javax.persistence.sharedCache.mode" value

List of Enum Values in an entity

server do you use? Can you upload the entire web application? The following test tries to reproduce ... . Flashbaer Flashbaer Joachim Beig We could reproduce the issue in the GuestBook web application

Error reading UTF string

$$$view210.getCurrentPersonId(Unknown Source) [DP-domain.jar:] at granat.dp.web.socket ... ) [jboss-as-jpa-7.1.1.Final.jar:7.1.1.Final] at org.jboss.as.web.security

ObjectDB 2 JDO Manual

course on database technology. Last year we used odb104fe, and I was happy to see the updated web page ... agree with most of the comparisons that we've probably all seen on the Web concluding that JDO ... probably all seen on the Web concluding that JDO is a superior API for object databases

NullPointerException on TreeSet load

: Servlet.service() for servlet [web.TimelinesServlet] in context with path [/Timelines] threw ... .jsonifyItems(Timeline.java:126) at web.TimelinesServlet.sendTimelineData(TimelinesServlet.java:207) at web.TimelinesServlet.doGet(TimelinesServlet.java:71) at javax.servlet.http.HttpServlet

Resource leaking via a rogue Shutdown Hook

A shutdown hook is registered upon ObjectDB initialisation. The hook is loaded from the web application's class loader. When the application is stopped (not the server, just the application) the hook is not cleared. This leads to web-application class-loader leak, that results in huge resource loss

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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