public T Merge <T>(
T entityOnCreate,
T entityOnUpdate,
string where) where T : EntityBase, new()
{
if (entityOnCreate == null)
{
throw new ArgumentNullException("entityOnCreate");
}
if (entityOnUpdate == null)
{
throw new ArgumentNullException("entityOnUpdate");
}
bool firstNode = true;
var setCaluseOnCreate = new Lazy <StringBuilder>();
var setCaluseOnUpdate = new Lazy <StringBuilder>();
var formattedSetClauseOnCreate = new StringFormatter("");
var formattedSetClauseOnUpdate = new StringFormatter("");
foreach (PropertyInfo prop in entityOnCreate.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
if (prop.GetCustomAttribute(typeof(NotMappedAttribute), true) != null ||
prop.GetCustomAttribute(typeof(RelationshipAttribute), true) != null)
{
continue;
}
if (prop.Name.Equals("Uuid", StringComparison.CurrentCultureIgnoreCase))
{
continue;
}
object value = prop.GetValue(entityOnCreate, null);
string prefixAndPostfix = (value is string) ? "\"" : string.Empty;
formattedSetClauseOnCreate.Add(BIND_MARKER + prop.Name + BIND_MARKER, prefixAndPostfix + (value ?? "null") + prefixAndPostfix);
if (firstNode)
{
firstNode = false;
}
else
{
setCaluseOnCreate.Value.Append(",");
}
setCaluseOnCreate.Value.Append(string.Format("n.{0}={1}{0}{1}", prop.Name, BIND_MARKER));
}
firstNode = true;
foreach (PropertyInfo prop in entityOnUpdate.GetType().GetProperties(BindingFlags.Public | BindingFlags.Instance))
{
if (prop.GetCustomAttribute(typeof(NotMappedAttribute), true) != null ||
prop.GetCustomAttribute(typeof(RelationshipAttribute), true) != null)
{
continue;
}
if (prop.Name.Equals("Uuid", StringComparison.CurrentCultureIgnoreCase))
{
continue;
}
object value = prop.GetValue(entityOnUpdate, null);
string prefixAndPostfix = (value is string) ? "\"" : string.Empty;
formattedSetClauseOnUpdate.Add(BIND_MARKER + prop.Name + BIND_MARKER, prefixAndPostfix + (value ?? "null") + prefixAndPostfix);
if (firstNode)
{
firstNode = false;
}
else
{
setCaluseOnUpdate.Value.Append(",");
}
setCaluseOnUpdate.Value.Append(string.Format("n.{0}={1}{0}{1}", prop.Name, BIND_MARKER));
}
string uuid = StripHyphens ? Guid.NewGuid().ToString("N") : Guid.NewGuid().ToString();
formattedSetClauseOnCreate.Add(string.Format("{0}Uuid{0}", BIND_MARKER), "\"" + uuid + "\"");
setCaluseOnCreate.Value.Append(firstNode ? string.Format("n.Uuid={0}Uuid{0}", BIND_MARKER) : string.Format(",n.Uuid={0}Uuid{0}", BIND_MARKER));
formattedSetClauseOnCreate.Str = setCaluseOnCreate.Value.ToString();
formattedSetClauseOnUpdate.Str = setCaluseOnUpdate.Value.ToString();
var query = new StringFormatter(QueryTemplates.TEMPLATE_MERGE);
query.Add("@node", entityOnCreate.Label);
query.Add("@on_create_clause", string.Format("ON CREATE SET {0}", formattedSetClauseOnCreate.ToString()));
query.Add("@on_match_clause", string.Format("ON MATCH SET {0}", formattedSetClauseOnUpdate.ToString()));
query.Add("@conditions", where);
IStatementResult statementResult = ExecuteQuery(query.ToString());
return(statementResult.Map <T>());
}
