xmlwrite

Write XML Document Object Model node

Syntax

xmlwrite(filename,DOMnode)

chr = xmlwrite(DOMnode)

Description

xmlwrite(filename,DOMnode) writes the Document Object Model (DOM) node DOMnode to the file filename.

Working with xmlwrite requires that you use the Java^® API for XML Processing (JAXP). For more information, see https://docs.oracle.com/javase/7/docs/api.

chr = xmlwrite(DOMnode) returns a serialized DOM node as a character vector.

Examples

Create XML File

Write an XML file by, first, creating a Document Object Model (DOM) node containing the XML data. Then, write the DOM node to an XML file. The final XML file should contain this text.

<?xml version="1.0" encoding="utf-8"?>

<toc version="2.0">

<tocitem target="upslope_product_page.html">Upslope Area Toolbox<!-- Functions -->

<tocitem target="demFlow_help.html">demFlow</tocitem>

<tocitem target="facetFlow_help.html">facetFlow</tocitem>

<tocitem target="flowMatrix_help.html">flowMatrix</tocitem>

<tocitem target="pixelFlow_help.html">pixelFlow</tocitem>

</tocitem>

</toc>

First, create the DOM node object and root element, and populate the elements and the attributes of the node corresponding to the XML data.

docNode = com.mathworks.xml.XMLUtils.createDocument('toc');

Identify the root element, and set the version attribute.

toc = docNode.getDocumentElement;
toc.setAttribute('version','2.0');

Add the tocitem element node for the product page. Each tocitem element in this file has a target attribute and a child text node.

product = docNode.createElement('tocitem');
product.setAttribute('target','upslope_product_page.html');
product.appendChild(docNode.createTextNode('Upslope Area Toolbox'));
toc.appendChild(product);

Add comment.

product.appendChild(docNode.createComment(' Functions '));

Add a tocitem element node for each function, where the target is of the form function_help.html.

functions = {'demFlow','facetFlow','flowMatrix','pixelFlow'};
for idx = 1:numel(functions)
    curr_node = docNode.createElement('tocitem');
    
    curr_file = [functions{idx} '_help.html']; 
    curr_node.setAttribute('target',curr_file);
    
    % Child text is the function name.
    curr_node.appendChild(docNode.createTextNode(functions{idx}));
    product.appendChild(curr_node);
end

Finally, export the DOM node to an XML file named infoUAT.xml, and view the file using the type function.

xmlwrite('infoUAT.xml',docNode);
type('infoUAT.xml');

Get Document Object Model (DOM) Node as Serialized Text

Read a DOM node from a sample XML file and get the contents of the DOM node as a character vector.

Display the contents of the sample XML file, and then import the DOM node from the file.

sampleXMLfile = 'sample.xml';
type(sampleXMLfile)
DOMnode = xmlread(sampleXMLfile);

Use xmlwrite to return the DOMnode object as a serialized character vector.

text = xmlwrite(DOMnode)

text = 
    '<?xml version="1.0" encoding="utf-8"?>
     <productinfo> 
     
        <matlabrelease>R2012a</matlabrelease>
        <name>Example Manager</name>
        <type>internal</type>
        <icon>ApplicationIcon.DEMOS</icon>
     
        <list>
           <listitem>
              <label>Example Manager</label>
              <callback>com.mathworks.xwidgets.ExampleManager.showViewer
     </callback>
              <icon>ApplicationIcon.DEMOS</icon>
           </listitem>
        </list>
     
     </productinfo>'

Input Arguments

filename — File name

character vector | string scalar

File name, specified as a character vector or string scalar containing the name of the local file or URL.

Data Types: char | string

DOMnode — Document Object Model(DOM) node

DOM node object

Document Object Model(DOM) node, specified as a DOM node object.

Document Object Model is defined by the World Wide Web consortium. For more information, see The XML Document Object Model.

Version History

Introduced before R2006a