Error During Creating XACML3 policy using Balana Code

Question

I just want to create a simple policy using Balana code in very simple and basic steps ! This policy contain only one resource and one rule just to see how policies can be created in Balana!. and this is my code

MatchElementDTO medto = new MatchElementDTO();
    medto.setMatchId("urn:oasis:names:tc:xacml:1.0:function:string-equal");

    AttributeValueElementDTO avdto = new AttributeValueElementDTO();
    avdto.setAttributeValue("file");
    avdto.setAttributeDataType("http://www.w3.org/2001/XMLSchema#string");

    AttributeDesignatorDTO addto = new AttributeDesignatorDTO();
    addto.setAttributeId("urn:oasis:names:tc:xacml:1.0:resource:resource-id");
    addto.setCategory("urn:oasis:names:tc:xacml:3.0:attribute-category:resource");
    addto.setDataType("http://www.w3.org/2001/XMLSchema#string");
    addto.setMustBePresent("true");

    medto.setAttributeValueElementDTO(avdto);
    medto.setAttributeDesignatorDTO(addto);

    AllOfElementDTO aodto = new AllOfElementDTO();
    aodto.addMatchElementDTO(medto);
    List<AllOfElementDTO> allOfElementDTOs = new ArrayList<AllOfElementDTO>();
    allOfElementDTOs.add(aodto);

    AnyOfElementDTO aydto = new AnyOfElementDTO();
    aydto.setAllOfElementDTOs(allOfElementDTOs);
    List<AnyOfElementDTO> anyOfElementDTOs = new ArrayList<AnyOfElementDTO>();
    anyOfElementDTOs.add(aydto);

    TargetElementDTO tedto = new TargetElementDTO();
    tedto.setAnyOfElementDTOs(anyOfElementDTOs);

    RuleElementDTO redto = new RuleElementDTO();
    redto.setRuleId("ruleForFile");
    redto.setRuleEffect("Permit");
    redto.setTargetElementDTO(tedto);
    List<RuleElementDTO> ruleElementDTOs = new ArrayList<RuleElementDTO>();
    ruleElementDTOs.add(redto);
    // Creating Policy by  PolicyElementDTO
    PolicyElementDTO pedto = new PolicyElementDTO();
    pedto.setPolicyName("amirPolicy");
    pedto.setPolicyDescription("simple having one element policy");
    pedto.setRuleCombiningAlgorithms("urn:oasis:names:tc:xacml:3.0:rule-combining-algorithm:permit-overrides");
    pedto.setRuleElementDTOs(ruleElementDTOs);
    pedto.setTargetElementDTO(tedto);
    pedto.setVersion("1.0");

    try {

        pb.build(pedto);
    } catch (PolicyBuilderException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

When I call build(PolicyElementDTO) .. then there I got error that Exception in thread "main" java.lang.NullPointerException. Where is the problem in my code

Actually, I want to create policy by giving some parameters only.. (i.e. Subject, Action, Resource). Anyone can guide me. I am newbie in Balana. So plz help me step by step.

Error During Creating XACML3 policy using Balana Code

0 Answers0