Hi,

I have the following in drl file.

package com.framework.service.remote.rules;

import com.framework.service.util.FSSInputOutputVO;
import com.framework.service.EssRuleConditionService;
import com.framework.service.util.CurrentLeg;
import com.framework.service.util.NextLeg;
import com.framework.service.util.PreviousLeg;
import com.framework.service.util.SecondNextLeg;
import com.framework.service.util.SecondPreviousLeg;
import java.util.ArrayList;
import java.util.List;
import java.lang.Boolean;

function List depStationFun68307cu() {
 EssRuleConditionService essRuleConditionService = new EssRuleConditionService();
 essRuleConditionService.setDepStation("21618");
 essRuleConditionService.setDepStation("21872");
 essRuleConditionService.setDepStation("21381");
 essRuleConditionService.setDepStation("22379");
 essRuleConditionService.setDepStation("22605");
 essRuleConditionService.setDepStation("22131");
 essRuleConditionService.setDepStation("21915");
 return essRuleConditionService.getDepStation();
}
function List depStationFun68308cu() {
 EssRuleConditionService essRuleConditionService = new EssRuleConditionService();
 essRuleConditionService.setDepStation("20932");
 essRuleConditionService.setDepStation("21078");
 essRuleConditionService.setDepStation("21148");
 essRuleConditionService.setDepStation("19342");
 essRuleConditionService.setDepStation("21783");
 essRuleConditionService.setDepStation("21370");
 essRuleConditionService.setDepStation("21304");
 essRuleConditionService.setDepStation("21097");
 return essRuleConditionService.getDepStation();
}
function List depStationFun68309cu() {
 EssRuleConditionService essRuleConditionService = new EssRuleConditionService();
 essRuleConditionService.setDepStation("21972");
 essRuleConditionService.setDepStation("21299");
 essRuleConditionService.setDepStation("21890");
 essRuleConditionService.setDepStation("21080");
 essRuleConditionService.setDepStation("21357");
 essRuleConditionService.setDepStation("19505");
 essRuleConditionService.setDepStation("21624");
 essRuleConditionService.setDepStation("20992");
 essRuleConditionService.setDepStation("22425");
 essRuleConditionService.setDepStation("22137");
 essRuleConditionService.setDepStation("21747");
 essRuleConditionService.setDepStation("22432");
 essRuleConditionService.setDepStation("21528");
 return essRuleConditionService.getDepStation();
}

function List depStationFun68312cu() {
 EssRuleConditionService essRuleConditionService = new EssRuleConditionService();
 essRuleConditionService.setDepStation("21299");
 essRuleConditionService.setDepStation("21747");
 essRuleConditionService.setDepStation("21890");
 essRuleConditionService.setDepStation("21972");
 return essRuleConditionService.getDepStation();
}
rule "68307"
 dialect "java"
 when
 currentLeg : CurrentLeg()
 nextLeg : NextLeg()
 previousLeg : PreviousLeg()
 secondNextLeg : SecondNextLeg()
 secondPreviousLeg : SecondPreviousLeg()
 eval(currentLeg.getORGSTN().size()!=0 && depStationFun68307cu().containsAll(currentLeg.getORGSTN()))
 then
 currentLeg.setDataProcessedByDrool(new Boolean(true));
 currentLeg.setRuleSetId("9003");
 currentLeg.setRuleSetCategoryId("15722");
 currentLeg.setRuleGroupId("9924");
 currentLeg.setRuleId("68307");
 currentLeg.setEssRuleActionId("21444");
 currentLeg.setPartId("47004404");
 currentLeg.setEssAction("47004404");
 currentLeg.setFLTTYPES("47004404");
 currentLeg.setSRVSVDSVCCOD("47004404");
 currentLeg.setASSIGNSVCCODE("47004404");
 currentLeg.setASSIGNFLTTYPE("47004404");
 currentLeg.setFssBoardDailyLegId("");
 end
rule "68308"
 dialect "java"
 when
 currentLeg : CurrentLeg()
 nextLeg : NextLeg()
 previousLeg : PreviousLeg()
 secondNextLeg : SecondNextLeg()
 eval(currentLeg.getORGSTN().size()!=0 && depStationFun68308cu().containsAll(currentLeg.getORGSTN()))
 then
 currentLeg.setDataProcessedByDrool(new Boolean(true));
 currentLeg.setRuleSetId("9003");
 currentLeg.setRuleSetCategoryId("15722");
 currentLeg.setRuleGroupId("9924");
 currentLeg.setRuleId("68308");
 currentLeg.setEssRuleActionId("41899");
 currentLeg.setPartId("47004405");
 currentLeg.setEssAction("47004405");
 currentLeg.setFLTTYPES("47004405");
 currentLeg.setSRVSVDSVCCOD("47004405");
 currentLeg.setASSIGNSVCCODE("47004405");
 currentLeg.setASSIGNFLTTYPE("47004405");
 currentLeg.setFssBoardDailyLegId("");
 end
rule "68309"
 dialect "java"
 when
 currentLeg : CurrentLeg()
 nextLeg : NextLeg()
 previousLeg : PreviousLeg()
 secondNextLeg : SecondNextLeg()
 eval(currentLeg.getORGSTN().size()!=0 && depStationFun68309cu().containsAll(currentLeg.getORGSTN()))
 then
 currentLeg.setDataProcessedByDrool(new Boolean(true));
 currentLeg.setRuleSetId("9003");
 currentLeg.setRuleSetCategoryId("15722");
 currentLeg.setRuleGroupId("9924");
 currentLeg.setRuleId("68309");
 currentLeg.setEssRuleActionId("21446");
 currentLeg.setPartId("47004406");
 currentLeg.setEssAction("47004406");
 currentLeg.setFLTTYPES("47004406");
 currentLeg.setSRVSVDSVCCOD("47004406");
 currentLeg.setASSIGNSVCCODE("47004406");
 currentLeg.setASSIGNFLTTYPE("47004406");
 currentLeg.setFssBoardDailyLegId("");
 end
rule "68312"
 dialect "java"
 when
 currentLeg : CurrentLeg()
 nextLeg : NextLeg()
 previousLeg : PreviousLeg()
 secondNextLeg : SecondNextLeg()
 eval(currentLeg.getORGSTN().size()!=0 && depStationFun68312cu().containsAll(currentLeg.getORGSTN()))
 then
 currentLeg.setDataProcessedByDrool(new Boolean(true));
 currentLeg.setRuleSetId("9003");
 currentLeg.setRuleSetCategoryId("15722");
 currentLeg.setRuleGroupId("9924");
 currentLeg.setRuleId("68312");
 currentLeg.setEssRuleActionId("72298");
 currentLeg.setPartId("47004409");
 currentLeg.setEssAction("47004409");
 currentLeg.setFLTTYPES("47004409");
 currentLeg.setSRVSVDSVCCOD("47004409");
 currentLeg.setASSIGNSVCCODE("47004409");
 currentLeg.setASSIGNFLTTYPE("47004409");
 currentLeg.setFssBoardDailyLegId("");
 currentLeg.setBRDSTN("");
 currentLeg.setCATERINGSTN("");
 currentLeg.setCLASSLIST("");
 currentLeg.setConsumptionPc("");
 currentLeg.setBoardingRatioM("");
 currentLeg.setBoardingRatioN("");
 currentLeg.setBoardingQty("");
 currentLeg.setBoardingMaxQty("");
 currentLeg.setBoardingPc("");
 if(currentLeg.getAircraftSeatCfgId()!=null) {
 if(currentLeg.getClassOfServices().contains("8091")) {
 currentLeg.setRuleSetId("9003");
 currentLeg.setRuleSetCategoryId("15722");
 currentLeg.setRuleGroupId("9924");
 currentLeg.setRuleId("68312");
 currentLeg.setEssRuleActionId("72292");
 currentLeg.setASSIGNSVCCODE("47004711");
 currentLeg.setEssAction("47004711");
 currentLeg.setPartId("47004711");
 currentLeg.setSRVSVDSVCCOD("47004711");
 currentLeg.setFssBoardDailyLegId("");
 currentLeg.setBRDSTN("");
 currentLeg.setCATERINGSTN("");
 currentLeg.setCLASSLIST("8091");
 currentLeg.setConsumptionPc("");
 currentLeg.setBoardingRatioM("");
 currentLeg.setBoardingRatioN("");
 currentLeg.setBoardingQty("");
 currentLeg.setBoardingMaxQty("");
 currentLeg.setBoardingPc("100");
 }
 }
 if(currentLeg.getAircraftSeatCfgId()== null) {
 currentLeg.setASSIGNSVCCODE("47004711");
 currentLeg.setRuleSetId("9003");
 currentLeg.setRuleSetCategoryId("15722");
 currentLeg.setRuleGroupId("9924");
 currentLeg.setRuleId("68312");
 currentLeg.setEssRuleActionId("72292");
 currentLeg.setEssAction("47004711");
 currentLeg.setPartId("47004711");
 currentLeg.setSRVSVDSVCCOD("47004711");
 currentLeg.setSRVBRDSVCCOD("47004711");
 currentLeg.setFssBoardDailyLegId("");
 currentLeg.setBRDSTN("");
 currentLeg.setCATERINGSTN("");
 currentLeg.setCLASSLIST("8091");
 currentLeg.setConsumptionPc("");
 currentLeg.setBoardingRatioM("");
 currentLeg.setBoardingRatioN("");
 currentLeg.setBoardingQty("");
 currentLeg.setBoardingMaxQty("");
 currentLeg.setBoardingPc("100");
 }
 if(currentLeg.getAircraftSeatCfgId()!=null) {
 if(currentLeg.getClassOfServices().contains("8091")) {
 currentLeg.setRuleSetId("9003");
 currentLeg.setRuleSetCategoryId("15722");
 currentLeg.setRuleGroupId("9924");
 currentLeg.setRuleId("68312");
 currentLeg.setEssRuleActionId("72293");
 currentLeg.setASSIGNSVCCODE("48005240");
 currentLeg.setEssAction("48005240");
 currentLeg.setPartId("48005240");
 currentLeg.setSRVSVDSVCCOD("48005240");
 currentLeg.setFssBoardDailyLegId("");
 currentLeg.setBRDSTN("");
 currentLeg.setCATERINGSTN("");
 currentLeg.setCLASSLIST("8091");
 currentLeg.setConsumptionPc("");
 currentLeg.setBoardingRatioM("");
 currentLeg.setBoardingRatioN("");
 currentLeg.setBoardingQty("");
 currentLeg.setBoardingMaxQty("");
 currentLeg.setBoardingPc("100");
 }
 }
 end

I have the following code to access drl file :

// get the .drl constructed as inputstream
// droolsInputString is drl file read into String.
// I dont have any issue reading the file but i get the null pointer exception // when the last line is executed. builder.addPackageFromDrl(source);

byte[] bytesOfDRL = droolsInputString.getBytes();
InputStream inputStream = new ByteArrayInputStream(bytesOfDRL);
Reader source = new InputStreamReader(inputStream);

PackageBuilderConfiguration conf = new PackageBuilderConfiguration();

PackageBuilder builder = new PackageBuilder(conf);
builder.addPackageFromDrl(source);

Here i get the following exception

17:57:50,776 ERROR [STDERR] java.lang.NullPointerException
17:57:50,776 ERROR [STDERR] at org.drools.rule.builder.dialect.java.JavaConsequenceBuilder.build(JavaConsequenceBuilder.java:54)
17:57:50,776 ERROR [STDERR] at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:67)
17:57:50,776 ERROR [STDERR] at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:446)
17:57:50,791 ERROR [STDERR] at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:304)
17:57:50,791 ERROR [STDERR] at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167)
17:57:50,791 ERROR [STDERR] at com.egatematrix.ess.framework.service.remote.rules.RulesEngineInvoker.readRule(RulesEngineInvoker.java:108)
17:57:50,791 ERROR [STDERR] at com.egatematrix.ess.framework.service.RuleService.doProcess(RuleService.java:302)
17:57:50,791 ERROR [STDERR] at com.egatematrix.ess.framework.service.FetchFSSData.invokeRuleService(FetchFSSData.java:141)
17:57:50,791 ERROR [STDERR] at com.egatematrix.ess.framework.service.FetchFSSData.triggerData(FetchFSSData.java:69)
17:57:50,791 ERROR [STDERR] at com.egatematrix.ess.framework.service.FetchFSSData$1.run(FetchFSSData.java:85)
17:57:50,791 ERROR [STDERR] at java.util.TimerThread.mainLoop(Timer.java:512)
17:57:50,791 ERROR [STDERR] at java.util.TimerThread.run(Timer.java:462)


I have tried compiling the drl file in drl editor . there is no error.
Can Any one Help me resolving the issue.