How to generate sample XML documents from their DTD or XSD

Question

We are developing an application that involves a substantial amount of XML transformations  We do not have any proper input test data per se  only DTD or XSD files  We d like to generate our test data ourselves from these files  Is there an easy free way to do that   Edit  There are apparently no free tools for this  and I agree that OxygenXML is one of the best tools for this

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XML-XIG  XML Instance Generator  http   xml-xig sourceforge net   This opensource would be helpful

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In Visual Studio 2008 SP1 and later the XML Schema Explorer can create an XML document with some basic sample data    Open your XSD document Switch to XML Schema Explorer Right click the root node and choose  Generate Sample Xml

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For Intellij Idea users    Have a look at Tools -  XML Actions    Seems to work very well  as far as I have tested    Edit    As mentioned by  naXa  you can now also right-click on the XSD file and click   Generate XML Document from XSD Schema

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Seems like nobody was able to answer the question so far     I use EclipseLink s MOXy to dynamically generate binding classes and then recursively go through the bound types  It is somewhat heavy  but it allows XPath value injection once the object tree is instantiated   InputStream in   new FileInputStream PATH TO XSD   DynamicJAXBContext jaxbContext                DynamicJAXBContextFactory createContextFromXSD in  null  Thread currentThread   getContextClassLoader    null   DynamicType rootType   jaxbContext getDynamicType YOUR ROOT TYPE   DynamicEntity root   rootType newDynamicEntity    traverseProps jaxbContext  root  rootType  0     TraverseProps is pretty simple recursive method   private void traverseProps DynamicJAXBContext c  DynamicEntity e  DynamicType t  int level  throws DynamicException  InstantiationException  IllegalAccessException          if  t  null                logger info indent level     type      t getName        of class      t getClassName        has     t getNumberOfProperties       props                for  String pName t getPropertiesNames                     Class lt   gt  clazz   t getPropertyType pName                   logger info indent level     prop      pName      in type      clazz                     logger info  prop      pName      in entity      e get pName                     if  clazz  null                          need to create an instance of object                     String updatedClassName   pName substring 0  1  toUpperCase     pName substring 1                       logger info indent level     Creating new type instance for     pName     using following class name      updatedClassName                        DynamicType child   c getDynamicType  generated     updatedClassName                       DynamicEntity childEntity   child newDynamicEntity                        e set pName  childEntity                       traverseProps c  childEntity  child  level 1                     else                          just set empty value                     e set pName  clazz newInstance                                               else               logger warn  type is null                      Converting everything to XML is pretty easy   Marshaller marshaller   jaxbContext createMarshaller    marshaller setProperty Marshaller JAXB FORMATTED OUTPUT  true   marshaller marshal root  System out

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Microsoft has published a  document generator  tool as a sample   This is an article that describes the architecture and operation of the sample app in some detail    If you just want to run the sample generation tool  click here and install the MSI    It s free   The source is available  Requires the  NET Framework to run   Works only with XSDs   not Relax NG or DTD

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You can use the XML Instance Generator which is part of the Sun Oracle Multi-Schema Validator   It s README txt states      Sun XML Generator is a Java tool to generate various XML instances from   several kinds of schemas  It supports DTD  RELAX Namespace  RELAX Core    TREX  and a subset of W3C XML Schema Part 1             This is a command-line tool that can generate both valid and invalid   instances from schemas  It can be used for generating test cases for XML   applications that need to conform to a particular schema    Download and unpack xmlgen zip from the msv download page and run the following command to get detailed usage instructions      java -jar xmlgen jar -help   The tool appears to be released under a BSD license  the source code is accessible from here

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XMLBlueprint 7 5 can do the following  - generate sample xml from dtd - generate sample xml from relax ng schema - generate sample xml from xml schema

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In recent versions of the free and open source Eclipse IDE you can generate XML documents from DTD and XSD files  Right-click on a given   dtd or   xsd file and select  Generate -  XML File      You can choose which root element to generate and whether optional attributes and elements should be generated   Of course you can use Eclipse to create and edit your DTD and XSD schema files  too  And you don t need to install any plugins  It is included in the standard distribution

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Microsoft Office has  InfoPath   which takes an XSD as an import and lets you quickly and easily define a form-based editor for creating XML files   It has two modes - one where you define the form  and another mode where you create the XML file by filling out the form   I believe it first came with Office 2003  and most people never install it   It shocks me at how much I like it

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For completeness I ll add http   code google com p jlibs wiki XSInstance  which was mentioned in a similar  but Java-specific  question  Any Java  quot API quot  to generate Sample XML from XSD

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Liquid XML Studio has an XML Sample Generator wizard which will build sample XML files from an XML Schema  The resulting data seems to comply with the schema  it just can t generate data for regex patterns

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You can also use XMLPad  free to use  found here http   www wmhelp com  to generate your xml samples  From the menu   XSD -  generate sample XML file

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I think Oxygen  http   www oxygenxml com   does it as well  but that s another commerical product  It s a nice one  though    I d strongly recommend it for anyone doing a lot of XML work  It comes in a nice Eclipse plugin  too   I do believe there is a free  fully-featured 30 day trial

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The camprocessor available on Sourceforge net will do xml test case generation for any XSD   There is a tutorial available to show you how to generate your own test examples - including using content hints to ensure realistic examples  not just random junk ones   The tutorial is available here  http   www oasis-open org committees download php 29661 XSD 20and 20jCAM 20tutorial pdf  And more information on the tool - which is using the OASIS Content Assembly Mechanism  CAM  standard to refactor your XSD into a more XSLT friendly structure - can be found from the resource website - http   www jcam org uk   Enjoy  DW

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The open source Version of SoapUI can generate SOAP requests from WSDL  which contains XSD type definitions   so it looks like there IS an open source implementation of this functionality  Unfortunately  I haven t figured out which library is used to to this

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XMLSpy does that for you  although that s not free     I believe that Liquid Xml Studio does it for you and is free  but I have not personally used it to create test data

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The OpenXSD library mentions that they have support for generating XML instances based on the XSD  Check that out

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XML Blueprint also does that  instructions here  http   www xmlblueprint com help html topic 170 htm  It s not free  but there s a 10-day free trial  it seems fast and efficient  unfortunately it s Windows only

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There s also http   xsd2xml com   an online XSD to XML generator

[xml] How to generate sample XML documents from their DTD or XSD?

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