Re: [rules-users] error running .brl frules
Hi,
I have {Rule1.drl,Rule2,drl,Rule3.brl}
Both the .drl rules run correctly but the .brl does not load and gives me the following
error
I am loading my rules as follows:
private RuleBase loadRules(String[] rules) throws Exception{
PackageBuilder builder = new PackageBuilder();
for ( int i = 0; i < rules.length; i++ ) {
String rulesFiles = rules[i];
//Check the type of rule file, then load it
System.out.println("loading rule file : "+rulesFiles);
loadRuleFile(rulesFiles,builder);
}
Package pkg = builder.getPackage();
RuleBase localRuleBase = RuleBaseFactory.newRuleBase();
localRuleBase.addPackage( pkg );
return localRuleBase;
}
private void loadRuleFile(String rulesFiles,PackageBuilder addRulesToThisPackage ) throws
DroolsParserException, IOException{
int len = rulesFiles.length();
if(rulesFiles.substring((len-4), len).equalsIgnoreCase(".brl")){
BRXMLPersistence read = (BRXMLPersistence) BRXMLPersistence.getInstance();
BRDRLPersistence write = (BRDRLPersistence) BRDRLPersistence.getInstance();
String brl = rulesFiles;
String outputDRL = write.marshal(read.unmarshal(brl));
rulesFiles = outputDRL;
}
Reader source = new InputStreamReader(
RuleRunner.class.getResourceAsStream(rulesFiles) );
//Exception if rule files are not found
if(null==source){
throw new FileNotFoundException("Cannot find rule file:"+rulesFiles);
}
//Load the rules , no DSL
addRulesToThisPackage.addPackageFromDrl(source);
}
I get the following error:
[Fatal Error] :1:1: Content is not allowed in prolog.
Exception in thread "main" com.thoughtworks.xstream.io.StreamException: :
Content is not allowed in prolog.
at com.thoughtworks.xstream.io.xml.DomDriver.createReader(DomDriver.java:65)
at com.thoughtworks.xstream.io.xml.DomDriver.createReader(DomDriver.java:47)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:781)
at com.thoughtworks.xstream.XStream.fromXML(XStream.java:773)
at org.drools.brms.server.util.BRXMLPersistence.unmarshal(BRXMLPersistence.java:91)
at com.org.RuleRunner.loadRuleFile(RuleRunner.java:65)
at com.org.RuleRunner.loadRules(RuleRunner.java:42)
at com.org.RuleRunner.runStatelessRules(RuleRunner.java:90)
at com.org.RulesTest.main(RulesTest.java:40)
Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at com.thoughtworks.xstream.io.xml.DomDriver.createReader(DomDriver.java:58)
... 8 more
Any Idea?????
Thank you.
M
</pre>
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