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Altova SchemaAgent 2021

The tutorial schemas book_store.xsd and library.xsd have different target namespaces. You can easily view this if you drag both schemas from the "import" folder into the main SchemaAgent window and expand their namespaces:

sa_tutorial_import_types1

According to the diagram above:

 

The schema book_store.xsd has the target namespace http://www.xmlspy.com/schemas/orgchart. This is also the default namespace. The prefix xsd is mapped to the namespace http://www.w3.org/2001/XMLSchema.

The schema library.xsd has the target namespace http://www.altova.com/IPO. This is also the default namespace. The prefix xs is mapped to the namespace http://www.w3.org/2001/XMLSchema. The prefix ns1 is mapped to the namespace http://www.xmlspy.com/schemas/orgchart.

 

Let's suppose that, while working with the library.xsd schema, you need the type bookType from the namespace http://www.xmlspy.com/schemas/orgchart (which is the target namespace of book_store.xsd). To combine schema documents that have different target namespaces like in this case, an import relationship must be used. The import relationship between the two schemas has already been added in a previous step of the tutorial, see Creating an Import Relationship. In this part of the tutorial, you will be using a type from the imported namespace. First, you will turn the local type bookType into a global complex type. Once this is done, you will be able to declare a new element of this type in the library.xsd schema.

To turn the "book" component into a global complex type:

1.In SchemaAgent Client, right-click book_store.xsd and select Edit in XMLSpy (Ctrl+Y) from the context menu.

2.In XMLSpy, click the Display Diagram ic_component icon for the element book_store to display its content model.

3.Click the "+" icon to expand the bookInfo element.

book_store_content_model3

4.Right-click the book element and select Make Global | Complex type from the context menu.

5.Save the file.

To import bookType to library.xsd:

1.In SchemaAgent Client, right-click library.xsd and select Edit in XMLSpy (Ctrl+Y) from the context menu.

2.In XMLSpy, click the Display Diagram ic_component icon for the element library to show its content model.

library_content_model

3.Click the "+" icon to expand the bookInfo element.

library_content_model2

4.Right-click the sequence icon after the bookInfo element and select Add child | Element from the context menu.

5.Enter "bookDetails" as the name for the element.

6.With this element still selected, in the Details entry helper, select ns1:bookType from the type drop-down list.

sa_tutorial_import_types5

7.Save and close the file.

 

You have now imported a type from the schema book_store.xsd into the schema library.xsd.

sa_tutorial_import_types6

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