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<h1>Creating XML files Tutorial</h1>
<p>
<b>By Ella Belisario</b>
<br />
Created August 18, 2004
<br />
Updated May 11, 2007
<br />
<br />
</p>
<p>
This tutorial demonstrates how you can use XML documents
creation wizards that come with the Eclipse Web Tools
Platform Project. These wizards allow to create XML document
from DTD or XML Schema.
</p>
<p>
After finishing this tutorial you will be able to do the
following:
</p>
<p>
<ul>
<li>creating an XML file from an XML template</li>
<li>creating an XML file from an XML schema</li>
<li>creating an XML file from a DTD</li>
</ul>
</p>
<h2>Getting Started</h2>
<br />
<p>
In order to work with content of this tutorial you will need
to download Web Standard Tools package from
<a href="http://download.eclipse.org/webtools/downloads/">
wtp downloads.
</a>
</p>
<p>
Once you have downloaded WST and prerequisites, unzip them
to the same folder and you are ready to go!
</p>
<p>
Next, launch Eclipse workbench and select
<b>
File&gt;New&gt;Examples&gt;XML&gt;Editing and validating
XML files
</b>
to bring up the wizard to create a simple project with the
sample XML files.
</p>
<br />
<h2>Creating XML files using wizard</h2>
<br />
<h3>
<b>Creating an XML file from an XML template</b>
</h3>
<br />
<p>
To create an XML file from a grammar file follow these
steps:
</p>
<ol>
<li>
Invoke
<b>New XML File</b>
wizard using workbench menu
<b>File&gt;New&gt;Other&gt;XML&gt;XML.</b>
</li>
<li>
On the
<b>XML File Name</b>
page select a project or folder to contain the XML file
and type a name for it.
</li>
<li>
Next, select the option to
<b>Create XML file from an XML template</b>
</li>
<li>
On the next page, you can select an XML template (Figure
1) to use as initial content in the XML file. The
templates shown in the list come from the
<b>XML Templates</b>
preference page. If you prefer no content, you can
uncheck the
<b>"Use XML Template"</b>
checkbox to generate a blank xml file.
</li>
</ol>
<b>Figure 1: Selecting an XML template:</b>
<br />
<img border="0" src="images/selectxmltemplate.png" />
<br />
<h3>
<b>Creating an XML file from DTD or XML Schema</b>
</h3>
<br />
<p>
Generating an XML file from a DTD or XML Schema can be
useful if you want to quickly create an XML file that is
based on your gramma file.
</p>
<p>
To create an XML file from a grammar file follow these
steps:
</p>
<ol>
<li>
Invoke
<b>New XML File</b>
wizard using workbench menu
<b>File&gt;New&gt;Other&gt;XML&gt;XML.</b>
</li>
<li>
On the
<b>XML File Name</b>
page select a project or folder to contain the XML file
and type a name for it.
</li>
<li>
Next, depending on what type of gramma file you need
choose, select the
<b>Create XML file from DTD file</b>
or
<b>Create XML file from an XML Schema file</b>
radio button.
</li>
<li>
The next choice you have to do is to select your gramma
file. You can select it from the workspace (you can
import files into the workspace if they are not there)
Another possibility is to use DTD and XML files defined
in
<b>XML Catalog</b>
.
</li>
<li>
On the
<b>Select Root Element</b>
page select from the following content options:
<br />
<ul>
<li>
Create optional attributes - both mandatory and
optional attributes will be generated.
</li>
<li>
Create optional elements - both mandatory and
optional elements will be generated.
</li>
<li>
Create first choice of required choice - the
first option of a required choice will be
generated in your XML file.
</li>
<li>
Fill elements and attributes with data - any
elements and attributes generated will be filled
with sample data.
</li>
</ul>
<p>
If you do not select any of these options, then only
the minimum amount of content required for the XML
file will be created.
</p>
</li>
<li>
The last this is to specify document type (Figure 2) for
DTD or namespace (Figure 3) for XML Schema information.
<p>
For
<b>DTD:</b>
</p>
<ul>
<li>
Specify the Public ID or System ID. You do not
need to specify both. If you do, the Public ID
will be used before the System ID.
</li>
</ul>
<p>
For
<b>XML Schema:</b>
</p>
<ul>
<li>
The Namespace information section contains
information about the target namespace of the
XML schema, its prefix, and the schema location
</li>
</ul>
</li>
</ol>
<b>Figure 2: Selecting Root Element page based on DTD file:</b>
<br />
<img border="0" src="images/selectRootElementDTD.png"
width="522" height="609" />
<br />
<b>
Figure 3: Selecting Root Element page based on XML Schema
file:
</b>
<br />
<img border="0" src="images/selectRootElementXSD.png"
width="526" height="653" />
<p>
When wizard finished the XML file will only contain the
selected root element and any elements or attributes
contained in the root element. You can now add elements,
attributes, entities, and notations to the XML file,
however, they must follow the rules established in the DTD
or XML Schema file that you used to create the XML file.
</p>
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