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Forum
14

Does JPA have any configuration to create DDL's that are database specific

There some JPA classes who's names more that 30 character. This worked well in MySQL , Derby , PostgreSQL but when it was tried on oracle , we hit the constraint that oracle has of 30 characters.   So basically my question is that is there any JPA have any configuration to create DDL's
Forum
14

How to create a Unique constraint?

Hi, I'm trying to create a unique constraint. Here is a simple example: @Entity public class Account { @Id @GeneratedValue private long id; @Index(unique="true") private String name; } The code runs and my Account objects are persisted. But no exception is thrown
Forum
14

how to create in memery database in objectdb

plz can u give or help me how to create in memory database in objectdb   with example See answer in this forum thread (also use that other thread for further discussion). yadavanil
Forum
14

Is there an administration tool with which I could create extra indexes?

Hello, I have composite index, and it was working fine, but now I need to add more features to the software and I need to throw more indexes in there. I wanted to know what's the best way to do this. 1. Have some admin tool CREATE INDEX..... ON a.b or 2. add more @Index to the object entities. in
Forum
14

recovery enabled="false", still creates tablename.odb$ files

Running in embedded mode, configuration specifies "".  Still, tablename.odb$ files get created, and if still present after an abrupt stop, the application will not restart properly.   What do we need to do to not utilize recovery files (not have orphan tablename.odb
Forum
14

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
Forum
14

JPA - ExceptionInInitializerError when creating EntityManager

& Also, My client Computer. Create a separate project & copy my original sources into it. I did
Issue
14

500 Internal Server Error on creating a new issue

Hi,   we tried (several times) to create a new issue but we receive a message:   Thank you for this report. The error seems to be related to uploading a file (according to the website log), but unfortunately we couldn't repeat the error. Please report again if it reoccurs. it seems to be a problem
JPA Doc
14

javax.persistence.criteria.ListJoin

expression of the given type Since: JPA 2.0 Fetch fetch(String attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join to the specified attribute using ... not exist Since: JPA 2.0 Fetch fetch(String attributeName, JoinType jt) Create a fetch join
JPA Doc
14

javax.persistence.criteria.CollectionJoin

 attributeName) Create a fetch join to the specified attribute using an inner join. Create a fetch join ... ) Create a fetch join to the specified attribute using the given join type. Create a fetch join ... ( PluralAttribute attribute) Create a fetch join to the specified collection-valued attribute using an inner