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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When I run my project – I have brl and drl rule files.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When I run it for the first time: I am converting brl to drl
files.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I get this error<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=red
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'>Exception in thread "main" </span></font><u><font size=2
color=navy face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:navy'>java.lang.NullPointerException</span></font></u><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=red
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'> at
java.io.Reader.<init>(Unknown Source)</span></font><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=red
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'> at java.io.InputStreamReader.<init>(Unknown
Source)</span></font><font size=2 face="Courier New"><span style='font-size:
10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=red
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'> at com.org.RuleRunner.loadRuleFile(</span></font><u><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>RuleRunner.java:87</span></font></u><font size=2
color=red face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'>) </span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=red
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'> at com.org.RuleRunner.loadRules(</span></font><u><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>RuleRunner.java:44</span></font></u><font size=2
color=red face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'>)</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=red
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'> at
com.org.RuleRunner.runStatelessRules(</span></font><u><font size=2 color=navy
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:navy'>RuleRunner.java:108</span></font></u><font size=2 color=red
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'>)</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=red
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'> at com.org.RulesTest.main(</span></font><u><font
size=2 color=navy face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:navy'>RulesTest.java:40</span></font></u><font size=2
color=red face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:red'>)</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>But after I run it for the first time and the rule.drl
(converted file from brl to drl) exists in my directory – I run it again
and then the program runs fine.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>So number of .brl files that many number of exceptions(same
as above) and then program runs.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Why is this happening?? Should it not create the file and load
it into the rulebase?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>My code for converting from brl to drl is :<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'> </span></font><b><font
size=2 color="#7f0055" face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:#7F0055;font-weight:bold'>try</span></font></b><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>{</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
BRXMLPersistence read = (BRXMLPersistence)
BRXMLPersistence.<i><span style='font-style:italic'>getInstance</span></i>();</span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
BRDRLPersistence write = (BRDRLPersistence)
BRDRLPersistence.<i><span style='font-style:italic'>getInstance</span></i>();</span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
brl = FileUtils.<i><span style='font-style:italic'>readFileToString</span></i>(file);
</span></font><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
System.</span></font><i><font size=2 color="#0000c0" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#0000C0;font-style:
italic'>out</span></font></i><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>.println(</span></font><font
size=2 color="#2a00ff" face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:#2A00FF'>"File content: "</span></font><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'> + brl); </span></font><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
outputDRL = write.marshal(read.unmarshal(brl));</span></font><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
String drlFilePath = </span></font><font size=2 color="#2a00ff"
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>"src/main/rules"</span></font><font size=2
color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>+rulesFiles +</span></font><font size=2 color="#2a00ff"
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>".drl"</span></font><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>;</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
System.</span></font><i><font size=2 color="#0000c0" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#0000C0;font-style:
italic'>out</span></font></i><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>.println(</span></font><font
size=2 color="#2a00ff" face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:#2A00FF'>"drlFilePath "</span></font><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>+drlFilePath +</span></font><font size=2
color="#2a00ff" face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:#2A00FF'>"rulesFiles "</span></font><font size=2
color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>+rulesFiles);</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
String path = rulesFiles+</span></font><font size=2 color="#2a00ff"
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:#2A00FF'>".drl"</span></font><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>;</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
System.</span></font><i><font size=2 color="#0000c0" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#0000C0;font-style:
italic'>out</span></font></i><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>.println(</span></font><font
size=2 color="#2a00ff" face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:#2A00FF'>"path "</span></font><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>+path);</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
System.</span></font><i><font size=2 color="#0000c0" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#0000C0;font-style:
italic'>out</span></font></i><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>.println(</span></font><font
size=2 color="#2a00ff" face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New";color:#2A00FF'>"drlfile "</span></font><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'>+drlFilePath);</span></font><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
drlFile = </span></font><b><font size=2 color="#7f0055" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055;font-weight:
bold'>new</span></font></b><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>
File(drlFilePath);</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
FileUtils.<i><span style='font-style:italic'>writeStringToFile</span></i>(drlFile,
outputDRL);</span></font><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
Reader source = </span></font><b><font size=2 color="#7f0055" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055;font-weight:
bold'>new</span></font></b><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>
InputStreamReader( RuleRunner.</span></font><b><font size=2 color="#7f0055"
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:#7F0055;font-weight:bold'>class</span></font></b><font size=2
color=black face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>.getResourceAsStream(path) ); // error is here</span></font><font
size=2 face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
addRulesToThisPackage.addPackageFromDrl(source);</span></font><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
}</span></font><b><font size=2 color="#7f0055" face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:#7F0055;font-weight:
bold'>catch</span></font></b><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'> (IOException e)
{</span></font><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
e.printStackTrace(); </span></font><font size=2
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=black
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:black'>
} </span></font><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>
}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>Any idea why
this problem?? Is there some error in my code above????<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>Please help.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>Thank you<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:black'>M</span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
</div>
<pre></pre>
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