private static PolicyComponent normalizeOperator()

in src/main/java/org/apache/neethi/AbstractPolicyOperator.java [91:163]
59 lines of code
18 McCabe index (conditional complexity)

    private static PolicyComponent normalizeOperator(Policy policy, 
                                                     PolicyOperator operator, 
                                                     PolicyRegistry reg,
                                                     boolean deep) {
                        
        short type = operator.getType();
                
        
        if (operator.isEmpty()) {
            ExactlyOne exactlyOne = new ExactlyOne();
            
            if (Constants.TYPE_EXACTLYONE != type) {
                exactlyOne.addPolicyComponent(new All());
            }
            return exactlyOne;
        }
                
        List<PolicyComponent> childComponentsList = new ArrayList<PolicyComponent>();
        for (PolicyComponent policyComponent : operator.getPolicyComponents()) {
            if (policyComponent.getType() == Constants.TYPE_ASSERTION) {
                
                if (deep) {
                    policyComponent = ((Assertion) policyComponent).normalize();                    
                }
                
                if (policyComponent.getType() == Constants.TYPE_POLICY) {
                    childComponentsList.add(((Policy) policyComponent).getFirstPolicyComponent());
                    
                } else  {
                    ExactlyOne exactlyOne = new ExactlyOne();
                    All all = new All();
                    
                    all.addPolicyComponent(policyComponent);
                    exactlyOne.addPolicyComponent(all);
                    childComponentsList.add(exactlyOne);
                }
            } else if (policyComponent.getType() == Constants.TYPE_POLICY_REF) {
                String uri = ((PolicyReference) policyComponent).getURI();
                policyComponent = reg == null ? null : reg.lookup(uri);
                if (policyComponent == null && uri.charAt(0) == '#') {
                    String id = uri.substring(1);

                    policyComponent = reg == null ? null : reg.lookup(id);
                    if (policyComponent == null) {
                        for (PolicyComponent p : policy.getPolicyComponents()) {
                            if (p instanceof Policy && id.equals(((Policy)p).getId())) {
                                policyComponent = p;
                            }
                        }
                    }
                }
                if (policyComponent == null) {
                    throw new RuntimeException(uri + " can't be resolved");
                }
                
                All all = new All();
                all.addPolicyComponents(((Policy) policyComponent).getPolicyComponents());
                childComponentsList.add(AbstractPolicyOperator.normalizeOperator(policy, all, reg, deep));
         
            } else if (policyComponent.getType() == Constants.TYPE_POLICY) {
                All all = new All();
                all.addPolicyComponents(((Policy) policyComponent).getPolicyComponents());
                childComponentsList.add(AbstractPolicyOperator.normalizeOperator(policy, all, reg, deep));
                
            } else {
                childComponentsList.add(AbstractPolicyOperator
                                            .normalizeOperator(policy,
                                                               (PolicyOperator)policyComponent, reg, deep));
            }            
        }
        
        return computeResultantComponent(childComponentsList, type);
    }