Grails give you seamless integration with your legacy Java code. If you have Java classes that already map to your legacy databases, Grails allows you to use them unchanged. In this article you’ll see examples that use Grails with Hibernate HBM files, and Enterprise JavaBeans 3 annotations with legacy Java classes.
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Apache OFBiz Development: The Beginner’s Tutorial is a new book from Packt that will help developers install and configure OFBiz to optimize system performance. Written by two leading OFBiz consultants Rupert Howell and Jonathon Wong, this book teaches developers to use services, entities, and widgets to build custom ERP and CRM systems.Apache OFBiz (Open For Business) is an open-source enterprise automation software that powers many small and medium sized businesses around the world. Built around an MVC framework with common logic, data model and process components, Ofbiz allows existing and bespoke applications to be added through a component-based architecture.Through examples in this book, readers will learn what OFBiz is, and how to build business applications rapidly. The book explains the Model-View-Controller framework and readers will learn about Widgets, Entities, and The Service Engine. They will also be able to develop a bespoke OFBiz component and also enhance and modify existing components.Users will be able to simplify database operations and perform complicated queries by learning the basic units of the framework’s Model. They will also learn to build synchronous and asynchronous communications by creating Java services in the Service Engine. Using the OFBiz language: MiniLang, readers will be able to speed up their OFBiz development.This book is targeted at developers wanting to build easily deployed and supported OFBiz applications. The book is out now and is available from Packt. For more information, please visit http://www.packtpub.com/apache-ofbiz-development-beginners-tutorial/book
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This article discusses the BLOB feature in the database and the author shows on how any file can be stored in the BLOB field of Oracle and can be displayed as an save as attachment dialog box. Very good article for the beginners and intermediate developers who wants to add the file upload and ’save As’ attachment feature in their struts powered web application .
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To make computers relate to the real world, we need sensors and analog-to-digital conversion. An exercise bicycle is a great example of how to interface a computer and a DB2 database to sensor data. All the steps are presented in an easy-to-follow format.
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This article provides tutorial notes on JDBC ResultSet with Java DB (Derby) JDBC Driver. Topics include ResultSet cursor, scrollable, and update capability; getString() and updateString() methods; updateRow(), insertRow(), and deleteRow() methods
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