persistence

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JPA (or other alternatives) for persisting in-memory queue

I have an application which us开发者_开发问答es an im-memory implementation of Queue. I need to add persistence to this queue \"with as less changes to my code\". I want to use JPA here - I guess addi[详细]

2023-03-28 14:07 分类：问答
Is there a way to create a one way connection in EJB?

Here is my problem. I have an article that has a bunch of keywords/tags (where one article can have multiple tags and one tag can go to multiple articles. Here what I\'d like to achieve:[详细]

2023-03-27 18:05 分类：问答
Tips on implementing a DataStore in Android?

I am working on providing a data store on Android (one that does not use SQLite), starting with a single-app desktop version of our Java Library. The ideal solution will be:[详细]

2023-03-27 12:51 分类：问答
WrongClassException when assigning entries on one side of many to many relationship

I\'m using Spring Roo (and Hibernate) for a web application. I\'ve got two entitieswhich have a MANY-TO-MANY relationship:[详细]

2023-03-27 11:36 分类：问答
Android Relational Database with Java Persistence

A desktop version of our software uses a relational database with Java Persistence API. We want to port the software to Android while keeping the relational database model. So is it possible to integr[详细]

2023-03-27 06:12 分类：问答
How to make my app persistence [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]

2023-03-27 04:20 分类：问答
JPA Map<String,String> mapping with xml

I am trying to define xml mapping for a Map<String,String> field. The entity class cannot be modified so I am using the XML variant of JPA mapping, but cannot figure out the proper syntax.[详细]

2023-03-27 00:30 分类：问答
Creating app data to load at runtime

I’m an inexperienced iPhone developer hoping to get a bit of insight into how to create textual application data that will be distributed with my iPhone application.[详细]

2023-03-26 13:12 分类：问答
Store process object in database

I am doing Process p = null; if(CheckOS.isWindows()) p = rt.exec(filebase+port+\"/hlds.exe +maxplayers \"+players+ \" -game cstrike -console +port \"+port+\" -nojoy -noipx -heapsize 250000 +map de_du[详细]

2023-03-26 09:41 分类：问答
Java persistence date query

I have.... string qString = \"select e from table where id= :id and trunc(Date) = TO_Date(\'03/04/2010\',\'MM/DD/YYYY\')[详细]

2023-03-25 18:32 分类：问答