5:05 p.m.
Hello,
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:
http://www.mail-archive.com/user@drools.codehaus.org/msg01731.html. But there was no
solution or help there. Any idea?
I am using drools 3.0.5 and Java 1.5.
Caused by: java.lang.ClassNotFoundException: [Lorg.drools.rule.Declaration;
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.drools.rule.PackageCompilationData$PackageClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.drools.common.ObjectInputStreamWithLoader.resolveClass(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readArray(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at java.util.HashMap.readObject(Unknown Source)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at org.drools.rule.PackageCompilationData.readExternal(Unknown Source)
at java.io.ObjectInputStream.readExternalData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at org.drools.rule.Package.readExternal(Unknown Source)
at
com.cisco.cp.engine.util.CPRuleUtil$CPRuleFileHelper.getRulePackage(CPRuleUtil.java:654)
.... 26 more
private Package getRulePackage(File file) throws Exception {
// Make sure file is a valid rule file with the proper rule file
// ... type.
if(file == null) {
throw new Exception("File argument is null");
}
if(!file.exists()) {
throw new Exception("File does not exist");
}
FileInputStream ruleFileInputStream = null;
ObjectInputStream ruleObjectInputStream = null;
Reader ruleFileReader = null;
Package rulePackage = null;
try {
rulePackage = new Package();
// If the rule file is already compiled, then we just have
// ... read it through object input stream.
ruleFileInputStream = new FileInputStream(file);
ruleObjectInputStream =
new ObjectInputStream(ruleFileInputStream);
rulePackage.readExternal(ruleObjectInputStream);
// Validate the package - this will throw exception if there
// ... were any error in the package.
rulePackage.checkValidity();
}
finally {
if (rulePackage != null &&
rulePackage.getErrorSummary() != null &&
!rulePackage.getErrorSummary().equals("")) {
System.out.println("RULE FILE ERRORS: " +
rulePackage.getErrorSummary());
}
if (ruleObjectInputStream != null) {
ruleObjectInputStream.close();
}
if (ruleFileInputStream != null) {
ruleFileInputStream.close();
}
if (ruleFileReader != null) {
ruleFileReader.close();
}
}
return rulePackage;
}
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