protected void bindSimpleId()

in grails-datastore-gorm-hibernate/src/main/groovy/org/grails/orm/hibernate/cfg/GrailsDomainBinder.java [2559:2620]
44 lines of code
10 McCabe index (conditional complexity)

    protected void bindSimpleId(PersistentProperty identifier, RootClass entity,
                                InFlightMetadataCollector mappings, Identity mappedId, String sessionFactoryBeanName) {

        Mapping mapping = getMapping(identifier.getOwner());
        boolean useSequence = mapping != null && mapping.isTablePerConcreteClass();

        // create the id value
        SimpleValue id = new SimpleValue(metadataBuildingContext, entity.getTable());
        Property idProperty  = new Property();
        idProperty.setName(identifier.getName());
        idProperty.setValue(id);
        entity.setDeclaredIdentifierProperty(idProperty);
        // set identifier on entity

        Properties params = new Properties();
        entity.setIdentifier(id);

        if (mappedId == null) {
            // configure generator strategy
            id.setIdentifierGeneratorStrategy(useSequence ? "sequence-identity" : "native");
        } else {
            String generator = mappedId.getGenerator();
            if("native".equals(generator) && useSequence) {
                generator = "sequence-identity";
            }
            id.setIdentifierGeneratorStrategy(generator);
            params.putAll(mappedId.getParams());
            if(params.containsKey(SEQUENCE_KEY)) {
                params.put(SequenceStyleGenerator.SEQUENCE_PARAM,  params.getProperty(SEQUENCE_KEY));
            }
            if ("assigned".equals(generator)) {
                id.setNullValue("undefined");
            }
        }

        String schemaName = getSchemaName(mappings);
        String catalogName = getCatalogName(mappings);

        params.put(PersistentIdentifierGenerator.IDENTIFIER_NORMALIZER, this.metadataBuildingContext.getObjectNameNormalizer());

        if (schemaName != null) {
            params.setProperty(PersistentIdentifierGenerator.SCHEMA, schemaName);
        }
        if (catalogName != null) {
            params.setProperty(PersistentIdentifierGenerator.CATALOG, catalogName);
        }
        id.setIdentifierGeneratorProperties(params);

        // bind value
        bindSimpleValue(identifier, null, id, EMPTY_PATH, mappings, sessionFactoryBeanName);

        // create property
        Property prop = new Property();
        prop.setValue(id);

        // bind property
        bindProperty(identifier, prop, mappings);
        // set identifier property
        entity.setIdentifierProperty(prop);

        id.getTable().setIdentifierValue(id);
    }