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I an xsd file with multiple imports and includes.
I need to basically merge the schema into a single file for use in a third-party application (which does not support includes).
Is there a free/opensource tool or script that can do this?
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In the Imports dialog box, in the Import New Schema as list, select XSD Import, XSD Include, or XSD Redefine, as appropriate, and then click Add. In the BizTalk Type Picker dialog box, expand the Schema node in the project tree, select the schema that you want to import, include, or redefine, and then click OK.
The difference between the include element and the import element is that import element allows references to schema components from schema documents with different target namespaces and the include element adds the schema components from other schema documents that have the same target namespace (or no specified ...
In short, the import element allows you to use schema components from any schema; the include element allows you to add all the components of an included schema to the containing schema.
As a solution, XML schemas that include the <xsd:include> directive can be preprocessed to copy and merge the contents of any included schemas into a single schema for uploading to the server. The following C# code can be used for the preprocessing. The comments in the early part of the code provide information about how to use it.
XSD files composed using include are candidates for combining all into one XSD file; things get tricky when different values are used for the schema element attributes we've highlighted above that deal with the form of elements of attributes, or defaults for block and final.
The schema element is the document element of what is commonly understood as an XSD file; By itself then an XSD file can only target one XML namespace, since there is only one targetNamespace attribute per XSD file. The XSD specification does not define an "XSD" serialization (file) format, so the above inference may cause reason for disagreement.
The W3C XSD include element provides support for schema modularity in which an XML schema can be partitioned into more than one physical file. SQL Server currently doesn't support this element. XML schemas that include this element will be rejected by the server.
You may find helpful the same that was asked on SO a couple of times, for example here and here. Another free source might be the one described on Microsoft's Technet, as it relates to limitations present in MS SQL Server products (also showing a real life example related to your question), where <xsd:include/>s are not supported. If you don't have the ability to compile and run that code, you can still use it as a "script" with little help from a C# script engine such as this.
However, as I've pointed out here, the <xsd:import/>s cannot be refactored "out" given the limitation where a schema file can only target one namespace.
If you're ever into a really serious refactoring scenario such as the one described here, you may have to consider something else...
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