Resource does not have neither a source nor a target path. Impossible to add it to the bundle - drools

Question

I am trying to read .xlsx file with rules using kie api 6.
However I get this exception
java.lang.RuntimeException: Resource does not have neither a source nor a target path. Impossible to add it to the bundle. P
lease set either the source or target name of the resource before adding it.null
at org.drools.compiler.kie.builder.impl.KieFileSystemImpl.write(KieFileSystemImpl.java:83)
at com.project.watch.validator.RuleValidator.isValidRuleKieNew(RuleValidator.java:71)
at com.project.watch.validator.RuleValidator.isValidRule(RuleValidator.java:37)
at com.project.watch.core.WatchDir$ValidateFileRunnable.run(WatchDir.java:177)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:
178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
The code looks like this
try {
KieServices ks = KieServices.Factory.get();
KieFileSystem kfs = ks.newKieFileSystem();
kfs.write(ks.getResources().newInputStreamResource(Files.newInputStream(p, StandardOpenOption.READ)));
KieBuilder kb = ks.newKieBuilder(kfs);
if (kb.getResults().getMessages(Level.ERROR).size() != 0) {
logger.lifecycle("Invalid file: {}.", kb.getResults().getMessages());
return false;
}
} catch (Exception e) {
logger.lifecycle("UNEXPECTED ERROR DURING VALIDATION -------------- ", e);
return false;
}
logger.lifecycle("Valid file: {}.", p);
return true;
}
It fails on kfs.write by the way.
I also checked the path to file by displaying it in console
Attempt to process rule file: D:\PROJECT_FOLDER\project\src\testInteg\resources\rules\rule.xlsx
and it is a correct path.
What's the problem? I am using 6.3 Final version.

Answer 1

I recommend this mantra, assuming your String p contains the path name as shown:
FileInputStream fis = new FileInputStream( p );
kfs.write( "src/main/resources/rule.xslx",
kieServices.getResources().newInputStreamResource( fis ) );
There are some other forms for write to the KieFileSystem, but I find that this is easy to use. You may derive the rule.xslx from p, using Java's API for path names.