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XML Namespace Mapping

XML Schema type, group, and element definitions are scoped using namespaces. The namespaces prevent possible naming clashes between entities that use the same name. Java packages serve a similar purpose. Therefore, FUSE Services Framework maps the target namespace of a schema document into a package containing the classes necessary to implement the structures defined in the schema document.

The name of the generated package is derived from a schema's target namespace using the following algorithm:

  1. The URI scheme, if present, is stripped.

    [Note]Note

    FUSE Services Framework will only strip the http:, https:, and urn: schemes.

    For example, the namespace http:\\www.widgetvendor.com\types\widgetTypes.xsd becomes \\widgetvendor.com\types\widgetTypes.xsd.

  2. The trailing file type identifier, if present, is stripped.

    For example, \\www.widgetvendor.com\types\widgetTypes.xsd becomes \\widgetvendor.com\types\widgetTypes.

  3. The resulting string is broken into a list of strings using / and : as separators.

    So, \\www.widgetvendor.com\types\widgetTypes becomes the list {"www.widegetvendor.com", "types", "widgetTypes"}.

  4. If the first string in the list is an internet domain name, it is decomposed as follows:

    1. The leading www. is stripped.

    2. The remaining string is split into its component parts using the . as the separator.

    3. The order of the list is reversed.

    So, {"www.widegetvendor.com", "types", "widgetTypes"} becomes {"com", "widegetvendor", "types", "widgetTypes"}

    [Note]Note

    Internet domain names end in one of the following: .com, .net, .edu, .org, .gov, or in one of the two-letter country codes.

  5. The strings are converted into all lower case.

    So, {"com", "widegetvendor", "types", "widgetTypes"} becomes {"com", "widegetvendor", "types", "widgettypes"}.

  6. The strings are normalized into valid Java package name components as follows:

    1. If the strings contain any special characters, the special characters are converted to an underscore(_).

    2. If any of the strings are a Java keyword, the keyword is prefixed with an underscore(_).

    3. If any of the strings begin with a numeral, the string is prefixed with an underscore(_).

  7. The strings are concatenated using . as a separator.

    So, {"com", "widegetvendor", "types", "widgettypes"} becomes the package name com.widgetvendor.types.widgettypes.

The XML Schema constructs defined in the namespace http:\\www.widgetvendor.com\types\widgetTypes.xsd are mapped to the Java package com.widgetvendor.types.widgettypes.

A JAXB generated package contains the following: