/** Please note that this is the "low level" rule assembly API. */
private RuleBase readRule()
throws Exception, DroolsParserException, RuleIntegrationException,
PackageIntegrationException, InvalidPatternException {
// read in the source
final Reader reader = new InputStreamReader(Waltz.class.getResourceAsStream("waltz.drl"));
final DrlParser parser = new DrlParser(LanguageLevelOption.DRL5);
final PackageDescr packageDescr = parser.parse(reader);
if (parser.hasErrors()) {
for (DroolsError error : parser.getErrors()) {
System.out.println(error);
}
assertFalse(parser.getErrors().toString(), parser.hasErrors());
}
// pre build the package
final PackageBuilder builder = new PackageBuilder();
builder.addPackage(packageDescr);
final Package pkg = builder.getPackage();
// add the package to a rulebase
final RuleBase ruleBase = getRuleBase();
ruleBase.addPackage(pkg);
return ruleBase;
// return SerializationHelper.serializeObject(ruleBase);
}
private RuleBase loadRuleBase(final Reader reader)
throws IOException, DroolsParserException, Exception {
final DrlParser parser = new DrlParser();
final PackageDescr packageDescr = parser.parse(reader);
if (parser.hasErrors()) {
System.out.println(parser.getErrors());
Assert.fail(
"Error messages in parser, need to sort this our (or else collect error messages)");
}
// pre build the package
final PackageBuilder builder = new PackageBuilder();
builder.addPackage(packageDescr);
final Package pkg = builder.getPackage();
// add the package to a rulebase
final RuleBase ruleBase = getRuleBase();
ruleBase.addPackage(pkg);
// load up the rulebase
return serializeRuleBase(ruleBase);
}
