protected void setCascadeBehaviour()

in grails-datastore-gorm-hibernate/src/main/groovy/org/grails/orm/hibernate/cfg/GrailsDomainBinder.java [2729:2785]
56 lines of code
24 McCabe index (conditional complexity)

    protected void setCascadeBehaviour(PersistentProperty grailsProperty, Property prop) {
        String cascadeStrategy = "none";
        // set to cascade all for the moment
        PersistentEntity domainClass = grailsProperty.getOwner();
        PropertyConfig config = getPropertyConfig(grailsProperty);
        if (config != null && config.getCascade() != null) {
            cascadeStrategy = config.getCascade();
        } else if (grailsProperty instanceof Association) {
            Association association = (Association) grailsProperty;
            PersistentEntity referenced = association.getAssociatedEntity();
            if (isHasOne(association)) {
                cascadeStrategy = CASCADE_ALL;
            }
            else if (association instanceof org.grails.datastore.mapping.model.types.OneToOne) {
                if (referenced != null && association.isOwningSide()) {
                    cascadeStrategy = CASCADE_ALL;
                }
                else {
                    cascadeStrategy = CASCADE_SAVE_UPDATE;
                }
            } else if (association instanceof org.grails.datastore.mapping.model.types.OneToMany) {
                if (referenced != null && association.isOwningSide()) {
                    cascadeStrategy = CASCADE_ALL;
                }
                else {
                    cascadeStrategy = CASCADE_SAVE_UPDATE;
                }
            } else if (grailsProperty instanceof ManyToMany) {
                if ((referenced != null && referenced.isOwningEntity(domainClass)) || association.isCircular()) {
                    cascadeStrategy = CASCADE_SAVE_UPDATE;
                }
            } else if (grailsProperty instanceof org.grails.datastore.mapping.model.types.ManyToOne) {
                if (referenced != null && referenced.isOwningEntity(domainClass) && !isCircularAssociation(grailsProperty)) {
                    cascadeStrategy = CASCADE_ALL;
                }
                else if(isCompositeIdProperty((Mapping) domainClass.getMapping().getMappedForm(), grailsProperty)) {
                    cascadeStrategy = CASCADE_ALL;
                }
                else {
                    cascadeStrategy = CASCADE_NONE;
                }
            }
            else if (grailsProperty instanceof Basic) {
                cascadeStrategy = CASCADE_ALL;
            }
            else if (Map.class.isAssignableFrom(grailsProperty.getType())) {
                referenced = association.getAssociatedEntity();
                if (referenced != null && referenced.isOwningEntity(domainClass)) {
                    cascadeStrategy = CASCADE_ALL;
                } else {
                    cascadeStrategy = CASCADE_SAVE_UPDATE;
                }
            }
            logCascadeMapping(association, cascadeStrategy, referenced);
        }
        prop.setCascade(cascadeStrategy);
    }