Adding an XQuery Node

Now that we understand how the XQuery code in createFullOrder.xquery uses a FLWOR expression to join data from our data sources, we can add it to our XML pipeline.

To add an XQuery node to an XML pipeline:
1. Drag the XQuery icon from the Toolbox pane and drop it on the XML pipeline canvas.

Stylus Studio creates an XQuery node and displays it in the XML pipeline diagram.

2. Display the Properties window ( View > Properties) if it is not already open.
3. Display the Project window ( View > Project) if it is not already open.
4. Drag createFullOrder.xquery and drop it on either
    • The XQuery node on the XML pipeline diagram
    • The Value field for the .xquery file property

The XQuery node now has two additional input ports, one named allBooks, and the other named ediOrder.

Figure 405. XQuery Node for createFullOrder.xquery

These input ports are colored green, indicating that each has a default value specified for it. These default values correspond to the two data sources we specified as source documents in the XQuery Mapper.

Tip

 

If you drop createFullOrder.xquery directly on the XML pipeline canvas, Stylus Studio automatically creates the ConvertToXML nodes that represent the data sources it uses. See An Alternate Way to Create ConvertToXML Nodes.

5. Change the XQuery node's default name, XQuery operator, to Extract full order information. (See Renaming Nodes if you need help with this step.)

Changes to Source Documents

XML pipelines reference external documents, like the createFullOrder.xquery document we just added. They do not create copies of these documents. Therefore, when changes to a source document are saved, the XML pipeline picks up these changes the next time it is executed.

Stylus Studio XML Editor Core Functions

Stylus Studio XML Editor Core Functions

Support for the Saxon XQuery Processor

Stylus Studio's XQuery tools feature integrated support for the Saxon SA 8.7.3 XQuery and XSLT processor so you can Edit, Debug and Run XQuery using Saxon. Java code generation support lets you deploy Saxon XQuery applications with just one click.

Convert EDIFACT to XML Schema

Convert EDIFACT to XML with Stylus Studio's XML Schema and legacy data integration tools.

Xerces - Parsing and Validating XML with the Apache Xerces Parser

The Xerces Parser supports the XML 1.0 recommendation and W3C's XML Schema recommendation version 1.0, DOM and SAX. Learn how easy it is to use Apache Xerces directly in Stylus Studio to parse and validate XML with ease.

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