EclipseLink/Examples/SDO/MetadataXMLSchema

Overview

The following example will demonstrate how to use EclipseLink's SDO functionality to:

• Define a set of SDO Types from an XML Schema

Initializing the Types from XML Schema

The first thing that needs to be done in an SDO application is to set up the metadata for the Types and Properties. This is most commonly done by loading an XML schema, although it may also be done programmatically.

FileInputStream xsdInputStream = new FileInputStream("Customer.xsd");
XSDHelper.INSTANCE.define(xsdInputStream, null);

Introspect Metadata - Types

Once the XML schema has been processed the types are available from TypeHelper.

Type addressType = TypeHelper.INSTANCE.getType("http://www.example.org/customer-example", "address-type");

Introspect Metadata - Properties

Once the XML schema has been processed the global attributes and elements are available as open content properties.

Property phoneNumberProperty = 
     TypeHelper.INSTANCE.getOpenContentProperty("http://www.example.org/customer-example", "phone-number");

You can also use XSDHelper to get the open content properties using XML information. This is useful when you have a global element and attribute in the same namspace with the same name.

Property phoneNumberProperty = 
     XSDHelper.INSTANCE.getGlobalProperty("http://www.example.org/customer-example", "phone-number", true);