Posted on 2010-03-10 23:00
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Drools
package rules;
import java.io.InputStream;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.List;
import org.drools.RuleBase;
import org.drools.RuleBaseFactory;
import org.drools.WorkingMemory;
import org.drools.compiler.PackageBuilder;
import org.drools.decisiontable.InputType;
import org.drools.decisiontable.SpreadsheetCompiler;
import org.drools.rule.Package;
public class TestPremium {
public static final String path = "rules\\premium\\0326\\02\\030006\\rate.xls";
public static void main(String[] args) throws Exception {
try {
RuleBase ruleBase = readDecisionTable();
WorkingMemory workingMemory = ruleBase.newStatefulSession();
int flag = path.indexOf("FormulaOrder");
ElementResultVO r = new ElementResultVO();
PremiumHelper helper = new PremiumHelper();
workingMemory.setGlobal("r", r);
workingMemory.setGlobal("helper", helper);
AppBaseVO base = new AppBaseVO();
AppVhlVO vhl = new AppVhlVO();
AppPrmCoefVO prmCoef = new AppPrmCoefVO();
base.setCAmtCur("01");
base.setNAmt(4000000d);
workingMemory.insert(base);
workingMemory.insert(vhl);
workingMemory.insert(prmCoef);
workingMemory.fireAllRules();
System.out.println("==========compile success!===========");
} catch (Exception e) {
System.out.println("==========compile failure!===========");
e.printStackTrace();
}
}
private static RuleBase readDecisionTable() throws Exception {
final SpreadsheetCompiler converter = new SpreadsheetCompiler();
InputStream is = TestPremium.class.getClassLoader().getResourceAsStream(path);
final String drl = converter.compile( is, InputType.XLS );
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl( new StringReader( drl ) );
Package pkg = builder.getPackage();
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage( pkg );
return ruleBase;
}
}
++++++++++++++++++++++++++++++++++++++
執行后的一部分：
#From row number: 369
rule "_369"
salience 65167
activation-group "x"
when
vhl:AppVhlVO(CUsageCde == "374015", CVhlTyp == "365012",
eval(helper.getVhlYear(vhl.getCFstRegYm())>=4 && helper.getVhlYear(vhl.getCFstRegYm())<1000))
then
r.putCoef("rate",0.67);
r.putField("Table.col","Cvrg.NRate");
end