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who has written 22 posts for Robin's Tech Tips.
When I was doing some work with OpenJPA, I found there is a possible memory leaking issue when OpenJPA is used for data access without the proper configuration of the parameter of auto detach (openjpa.AutoDetach).
The scenario that the memory issue may happen:
One EntityManagerFactory and One EntityManager are used throughout the whole session;
The session contains [...]
GWT version 2.1 has finally been released with the anticipated business level data presentation widgets and other interesting features. CellTable is one of the new widgets that supports pagination. Therefore, there no need to use PagingScrollTable in the gwt incubator or implementations in other third-party libraries.
From the Google official document on how to use data [...]
The core GWT library (prior to version 2.1) does not provide an official widget that allows for a table with pagination support. Instead, there is a widget in gwt incubator called PagingScrollTable that has the paging functionality.
However, the “official wiki document” does not provide enough detailed information to use this widget. Luckily someone has made [...]
The file “beans.xml” used for you application is already a kind of configuration file. However, this file is designed for the developer who can quickly customize the application with less coding changes. It is not recommended for an end user to change the file.
For example, you can, of course, define the database connection properties in [...]
Java beans in Spring can also have their collection properties populated in the beans.xml file. The collection properties here mean things like List, Map and Array.
For example, if you want to create a JPA EntityManagerFactory with a set of connection properties, these properties can be configured in beans.xml like this:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" [...]
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