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<DIV>Hello,</DIV>
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<DIV>I am trying to deserialize rule package from disk. However, I am getting the following exception. I have also included the code that I use to deserialize rule packages. I found only one link on the web that describes this issue after looking around: <A href="http://www.mail-archive.com/user@drools.codehaus.org/msg01731.html" target=_blank rel=nofollow>http://www.mail-archive.com/user@drools.codehaus.org/msg01731.html</A>. But there was no solution or help there. Any idea?</DIV>
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<DIV>I am using drools 3.0.5 and Java 1.5.</DIV>
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<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2>Caused by: java.lang.ClassNotFoundException: [Lorg.drools.rule.Declaration;<BR>at <A href="http://java.net/" target=_blank>java.net</A>.URLClassLoader$1.run(Unknown Source)<BR>at java.security.AccessController.doPrivileged(Native Method)<BR>at <A href="http://java.net.urlclassloader.fi/" target=_blank>java.net</A>.URLClassLoader.findClass(Unknown Source)<BR>at java.lang.ClassLoader.loadClass(Unknown Source)<BR>at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)<BR>at java.lang.ClassLoader.loadClass(Unknown Source)<BR>at org.drools.rule.PackageCompilationData$PackageClassLoader.loadClass(Unknown Source)<BR>at java.lang.ClassLoader.loadClass(Unknown Source)<BR>at org.drools.common.ObjectInputStreamWithLoader.resolveClass(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readNonProxyDesc(Unknown Source)<BR>at <A
href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readClassDesc(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readArray(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readObject0(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.de/" target=_blank>java.io</A>.ObjectInputStream.defaultReadFields(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readSerialData(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readOrdinaryObject(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readObject0(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/"
target=_blank>java.io</A>.ObjectInputStream.readObject(Unknown Source)<BR>at java.util.HashMap.readObject(Unknown Source)<BR>at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)<BR>at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)<BR>at java.lang.reflect.Method.invoke(Unknown Source)<BR>at <A href="http://java.io.objectstreamclass.in/" target=_blank>java.io</A>.ObjectStreamClass.invokeReadObject(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readSerialData(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readOrdinaryObject(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readObject0(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readObject(Unknown Source)<BR>at
org.drools.rule.PackageCompilationData.readExternal(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readExternalData(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readOrdinaryObject(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readObject0(Unknown Source)<BR>at <A href="http://java.io.objectinputstream.re/" target=_blank>java.io</A>.ObjectInputStream.readObject(Unknown Source)<BR>at org.drools.rule.Package.readExternal(Unknown Source)<BR>at com.cisco.cp.engine.util.CPRuleUtil$CPRuleFileHelper.getRulePackage(CPRuleUtil.java:654)<BR>... 26 more</FONT></DIV>
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<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2>private Package getRulePackage(File file) throws Exception {<BR> // Make sure file is a valid rule file with the proper rule file<BR> // ... type.<BR> if(file == null) {<BR> throw new Exception("File argument is null");<BR> }</FONT></DIV>
<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2> if(!file.exists()) {<BR> throw new Exception("File does not exist");<BR> }</FONT></DIV>
<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2></FONT> </DIV>
<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2> FileInputStream ruleFileInputStream = null;<BR> ObjectInputStream ruleObjectInputStream = null;<BR> Reader ruleFileReader = null;<BR> Package rulePackage = null;</FONT></DIV>
<DIV><FONT face=Courier size=2></FONT> </DIV>
<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2> try {<BR> rulePackage = new Package();<BR> // If the rule file is already compiled, then we just have<BR> // ... read it through object input stream.<BR> ruleFileInputStream = new FileInputStream(file);<BR> ruleObjectInputStream =<BR> new ObjectInputStream(ruleFileInputStream);</FONT></DIV>
<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2> rulePackage.readExternal(ruleObjectInputStream);<BR></FONT><FONT face="courier, monaco, monospace, sans-serif" size=2></FONT></DIV>
<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2> // Validate the package - this will throw exception if there<BR> // ... were any error in the package.<BR> rulePackage.checkValidity();</FONT></DIV>
<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2> }<BR></FONT><FONT face="courier, monaco, monospace, sans-serif" size=2> finally {<BR> if (rulePackage != null &&<BR> rulePackage.getErrorSummary() != null &&<BR> !rulePackage.getErrorSummary().equals("")) {<BR> System.out.println("RULE FILE ERRORS: " +<BR> rulePackage.getErrorSummary());<BR> }<BR> if (ruleObjectInputStream != null) {<BR>
ruleObjectInputStream.close();<BR> }<BR> if (ruleFileInputStream != null) {<BR> ruleFileInputStream.close();<BR> }<BR> if (ruleFileReader != null) {<BR> ruleFileReader.close();<BR> }<BR> }</FONT></DIV>
<DIV><FONT face="courier, monaco, monospace, sans-serif" size=2> return rulePackage;<BR>}<BR><BR></FONT></DIV></DIV></div><br>
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