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<?xml version="1.0" encoding="ISO-8859-1"?><!--
Copyright (c) 2005, 2006, 2007 Springsite BV (The Netherlands) and others
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/epl-v10.html
--><!--
@author <a href="mtaal@elver.org">Martin Taal</a>
@version $Revision: 1.15 $ $Date: 2007/07/18 16:11:21 $
--><!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V1.3//EN" "document-v13.dtd">
<document>
	<header>
		<title>Resource Utility: directly open an editor, import/export</title>
	</header>
	<body>
		<p>As part of the EMF Hibernate plugin install a separate utility is also installed.
			This utility can be used to directly open a relational Hibernate database in
			the generated EMF editor.
		</p>
		<p><em>This resource utility is in many
		ways very basic. It may or may not be usefull for you and will be extended in the future.</em></p>
		<section><title>The ehb file</title>
		<p>The resource utility operates on files with the extension <em>ehb</em>. This file
		contains registration and database connection information for a Session Factory.
		An example ehb file with a description of its content can be downloaded here:
			<link href="samples/library.ehb">library.ehb</link>.</p>
		<p><em/></p>
		</section>
		<section><title>Open Resource</title>
		<p>When rightclicking on an ehb file the Teneo menu option is displayed. Within this
		menu the option <em>Open Resource</em> is shown. Choosing this option will open a
		EMF editor which reads its contents from the connection/session information in the
		ehb file.</p>
		<p>
		<img src="images/resourceutility.jpg" alt="Resource utility"/>		
		</p>
		</section>
		<section><title>Export/Import to and from XMI or XML</title>
			<p>The XML/XMI export
				function can be used to make a backup of your current data and import this
				data again in an empty (new) database. The main drawback
			of the XML/XMI import is that it will add all the content to the database and will
			not check if the content already exists in the database. Note that the XMI
			export/import is more powerfull (than XML) because it supports export/import of multiple
			root objects.</p>
		</section>
		<section><title>Throubleshooting: empty editor when opening resource, can not add</title>
		<p>When you open an empty resource (relational database) by right clicking on the
			ehb file an editor is opened which does not allow you to add the first document. This
			is a restriction of the generated EMF editor. So you should always have at least one
			document in the resource. This document can be created by importing from a XML document
			or by using the standard EMF open model wizard.</p>
		</section>
		<section><title>Throubleshooting: the editor is not started but instead the ehb file is opened in the text editor</title>
		<p>This happens when the ehb file is already open in a text editor. This can happen because you need to
		edit the properties in a text editor. So first close the text editor with the ehb file and then choose 'Open Resource'.</p>
		</section>
				<section><title>Throubleshooting: editor does not start, AssertionFailedException</title>
		<p>See <link href="troubleshooting.html#Editor+does+not+start%2C+AssertionFailedException">here</link>
		in the troubleshooting page.</p>
		</section>
		
		<section><title>Future extensions</title>
			<ul>
				<li>Instead of a property file offer a more advanced ui</li>
				<li>Extend the export/import to support different modes such as
					overwrite existing documents, add to the relational store etc.</li>
				<li>Support for xsl transformations when exporting/importing</li>
				<li>Export subsets of the relational store using HQL queries or other
				filtering</li>
			</ul>
			<p>Please post a message on the <link href="mailinglist.html">newsgroup</link> if you
			have other ideas or requirements for resource utilities.</p>
		<p/>
		</section>		
	</body>
</document>
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