public List <CypherProperty> PropertiesForPurpose <TEntity, TAttr>(ICypherExtensionContext context, TEntity entity)
where TEntity : class
where TAttr : CypherExtensionAttribute
{
var key = AddKeyAttribute <TEntity, TAttr>(context, entity);
return(_typeProperties[key]);
}
internal static string ToCypherString <TEntity, TAttr>(this TEntity entity, ICypherExtensionContext context, string paramKey = null, List <CypherProperty> useProperties = null)
where TAttr : CypherExtensionAttribute
where TEntity : class
{
var properties = useProperties ?? CypherTypeItemHelper.PropertiesForPurpose <TEntity, TAttr>(entity);
return(entity.GetMatchCypher(context, properties, paramKey));
}
internal static string ApplyCasing(this string value, ICypherExtensionContext context)
{
var useCamelCase = (context.JsonContractResolver is CamelCasePropertyNamesContractResolver);
if (useCamelCase)
{
return(string.Format(
"{0}{1}"
, value.Substring(0, 1).ToLowerInvariant()
, value.Length > 1 ? value.Substring(1, value.Length - 1) : string.Empty));
}
return(value);
}
public CypherTypeItem AddKeyAttribute <TEntity, TAttr>(ICypherExtensionContext context, TEntity entity)
where TAttr : CypherExtensionAttribute
where TEntity : class
{
var type = entity.GetType();
var key = new CypherTypeItem {
Type = type, AttributeType = typeof(TAttr)
};
//check cache
if (!_typeProperties.ContainsKey(key))
{
//strip off properties create map for usage
_typeProperties.AddOrUpdate(key, type.GetProperties().Where(x => x.GetCustomAttributes(typeof(TAttr), true).Any())
.Select(x => new CypherProperty {
TypeName = x.Name, JsonName = x.Name.ApplyCasing(context)
})
.ToList(), (k, e) => e);
}
return(key);
}
internal static string GetMatchCypher <TEntity>(this TEntity entity
, ICypherExtensionContext context
, List <CypherProperty> useProperties
, string paramKey)
where TEntity : class
{
var label = entity.EntityLabel();
paramKey = entity.EntityParamKey(paramKey);
var matchProperties = useProperties
.Select(x => string.Format("{0}:{{{1}}}.{0}", x.JsonName, GetMatchParamName(paramKey)))
.ToList();
var jsonProperties = string.Join(",", matchProperties);
var parameterCypher = matchProperties.Count == 0 ? string.Empty : AsWrappedVariable(jsonProperties);
var cypher = GetMatchCypher(paramKey, label, parameterCypher);
return(cypher);
}
