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<p class=MsoNormal>Hi there,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Error message:<o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>(null: 5, 77): schema_reference.4: Failed to read schema document
'drools.org/drools-5.0.xsd', because 1) could not find the document; 2) the
document could not be read; 3) the root element of the document is not
<xsd:schema>.</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I ran into this issue when experimenting a project that
transforming the rules back and forth from DRL to XML with utility classes as documented
in following link:<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><a
href="http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-expert/html/ch04.html#d0e5750">http://downloads.jboss.com/drools/docs/5.0.1.26597.FINAL/drools-expert/html/ch04.html#d0e5750</a><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>My code:<o:p></o:p></p>
<p class=MsoNormal>…<o:p></o:p></p>
<p class=MsoNormal>XmlPackageReader xmlReader = new XmlPackageReader(null);<o:p></o:p></p>
<p class=MsoNormal>StringReader sr = new StringReader(rulesInXml);<o:p></o:p></p>
<p class=MsoNormal>try {<o:p></o:p></p>
<p class=MsoNormal> PackageDescr
packageDescr = xmlReader.read(sr);<o:p></o:p></p>
<p class=MsoNormal style='text-indent:.5in'>DrlDumper drlDumper = new
DrlDumper();<o:p></o:p></p>
<p class=MsoNormal style='text-indent:.5in'>String drlString =
drlDumper.dump(packageDescr);<o:p></o:p></p>
<p class=MsoNormal>}<o:p></o:p></p>
<p class=MsoNormal>catch (Exception ex) {<o:p></o:p></p>
<p class=MsoNormal> System.out.println(ex);<o:p></o:p></p>
<p class=MsoNormal>}<o:p></o:p></p>
<p class=MsoNormal>…<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>where string “rulesInXml” is the result xml
string transformed from a valid .drl file. It looks like:<o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'><?xml version="1.0"
encoding="UTF-8"?> </span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'><package
name="com.sample" </span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> xmlns="http://drools.org/drools-5.0"
</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> <span
style='background:yellow;mso-highlight:yellow'>xs:schemaLocation="http://drools.org/drools-5.0
drools.org/drools-5.0.xsd"</span>></span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'><import name="com.sample.DroolsTest.Message"
/> </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'><rule name="Hello
World"></span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><lhs><pattern
identifier="m" object-type="Message" ></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><field-constraint
field-name="status"> </span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><qualified-identifier-restriction
evaluator="==">Message.HELLO </qualified-identifier-restriction></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'></field-constraint></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><field-binding
field-name="message" identifier="myMessage" /></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'></pattern></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'></lhs><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><rhs> System.out.println(
myMessage ); </span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> m.setMessage(
"Goodbye cruel world" );</span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> m.setStatus(
Message.GOODBYE );</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'> update(
m );</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'></rhs></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'></rule><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'><rule name="GoodBye"></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><lhs><pattern
object-type="Message" ></span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><field-constraint
field-name="status"> </span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><qualified-identifier-restriction
evaluator="==">Message.GOODBYE
</qualified-identifier-restriction></span><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'></field-constraint></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><field-binding
field-name="message" identifier="myMessage" /></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'></pattern></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'></lhs><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><rhs> System.out.println(
myMessage );</span><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-indent:.5in;text-autospace:none'><span
style='font-size:10.0pt;font-family:"Courier New";color:black'></rhs></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
font-family:"Courier New";color:black'></rule></span><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:black'></package><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal>What did I miss here?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Moreover, the Drools 5.0 API’s for XML support are
poorly-documented. For example, the constructors of class “XmlPackageReader”
has an arg of “SemanticModules” type which is not documented. <span
style='font-family:Wingdings'>L</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Any help would be highly appreciated!<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal>Chang<o:p></o:p></p>
</div>
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