/// <summary>
/// Delete all entities in the table related to the type T.
/// </summary>
/// <typeparam name="T">Type of entity</typeparam>
/// <param name="connection">Open SqlConnection</param>
/// <param name="transaction">The transaction to run under, null (the default) if none</param>
/// <param name="commandTimeout">Number of seconds before command execution timeout</param>
/// <returns>true if deleted, false if none found</returns>
public static bool DeleteAll <T>(this IDbConnection connection, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
{
var connectionName = GetDatabaseType?.Invoke(connection).ToLower()
?? connection.GetType().Name.ToLower();
var type = typeof(T);
var name = GetTableName(type);
if (connectionName == "hanaconnection")
{
var statement = $"delete from \"{name}\"";
var deleted = connection.Execute(statement, null, transaction, commandTimeout);
return(deleted > 0);
}
else
{
var statement = $"delete from {name}";
var deleted = connection.Execute(statement, null, transaction, commandTimeout);
return(deleted > 0);
}
}
/// <summary>
/// Inserts an entity into table "Ts" and returns identity id or number of inserted rows if inserting a list.
/// </summary>
/// <typeparam name="T">The type to insert.</typeparam>
/// <param name="connection">Open SqlConnection</param>
/// <param name="entityToInsert">Entity to insert, can be list of entities</param>
/// <param name="transaction">The transaction to run under, null (the default) if none</param>
/// <param name="commandTimeout">Number of seconds before command execution timeout</param>
/// <returns>Identity of inserted entity, or number of inserted rows if inserting a list</returns>
public static long Insert <T>(this IDbConnection connection, T entityToInsert, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
{
var connectionName = GetDatabaseType?.Invoke(connection).ToLower()
?? connection.GetType().Name.ToLower();
var isList = false;
var type = typeof(T);
if (type.IsArray)
{
isList = true;
type = type.GetElementType();
}
else if (type.IsGenericType)
{
var typeInfo = type.GetTypeInfo();
bool implementsGenericIEnumerableOrIsGenericIEnumerable =
typeInfo.ImplementedInterfaces.Any(ti => ti.IsGenericType && ti.GetGenericTypeDefinition() == typeof(IEnumerable <>)) ||
typeInfo.GetGenericTypeDefinition() == typeof(IEnumerable <>);
if (implementsGenericIEnumerableOrIsGenericIEnumerable)
{
isList = true;
type = type.GetGenericArguments()[0];
}
}
var name = GetTableName(type);
var sbColumnList = new StringBuilder(null);
var allProperties = TypePropertiesCache(type);
var keyProperties = KeyPropertiesCache(type);
var computedProperties = ComputedPropertiesCache(type);
var allPropertiesExceptKeyAndComputed = allProperties.Except(keyProperties.Union(computedProperties)).ToList();
var adapter = GetFormatter(connection);
for (var i = 0; i < allPropertiesExceptKeyAndComputed.Count; i++)
{
var property = allPropertiesExceptKeyAndComputed[i];
adapter.AppendColumnName(sbColumnList, property.Name); //fix for issue #336
if (i < allPropertiesExceptKeyAndComputed.Count - 1)
{
sbColumnList.Append(", ");
}
}
var sbParameterList = new StringBuilder(null);
for (var i = 0; i < allPropertiesExceptKeyAndComputed.Count; i++)
{
var property = allPropertiesExceptKeyAndComputed[i];
if (connectionName == "hanaconnection")
{
sbParameterList.AppendFormat(":{0}", property.Name);
}
else
{
sbParameterList.AppendFormat("@{0}", property.Name);
}
if (i < allPropertiesExceptKeyAndComputed.Count - 1)
{
sbParameterList.Append(", ");
}
}
int returnVal;
var wasClosed = connection.State == ConnectionState.Closed;
if (wasClosed)
{
connection.Open();
}
if (!isList) //single entity
{
returnVal = adapter.Insert(connection, transaction, commandTimeout, name, sbColumnList.ToString(),
sbParameterList.ToString(), keyProperties, entityToInsert);
}
else
{
//insert list of entities
if (connectionName == "hanaconnection")
{
var cmd = $"insert into \"{name}\" ({sbColumnList}) values ({sbParameterList})";
returnVal = connection.Execute(cmd, entityToInsert, transaction, commandTimeout);
}
else
{
var cmd = $"insert into {name} ({sbColumnList}) values ({sbParameterList})";
returnVal = connection.Execute(cmd, entityToInsert, transaction, commandTimeout);
}
}
if (wasClosed)
{
connection.Close();
}
return(returnVal);
}
/// <summary>
/// Delete entity in table "Ts".
/// </summary>
/// <typeparam name="T">Type of entity</typeparam>
/// <param name="connection">Open SqlConnection</param>
/// <param name="entityToDelete">Entity to delete</param>
/// <param name="transaction">The transaction to run under, null (the default) if none</param>
/// <param name="commandTimeout">Number of seconds before command execution timeout</param>
/// <returns>true if deleted, false if not found</returns>
public static bool Delete <T>(this IDbConnection connection, T entityToDelete, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
{
var connectionName = GetDatabaseType?.Invoke(connection).ToLower()
?? connection.GetType().Name.ToLower();
if (entityToDelete == null)
{
throw new ArgumentException("Cannot Delete null Object", nameof(entityToDelete));
}
var type = typeof(T);
if (type.IsArray)
{
type = type.GetElementType();
}
else if (type.IsGenericType)
{
var typeInfo = type.GetTypeInfo();
bool implementsGenericIEnumerableOrIsGenericIEnumerable =
typeInfo.ImplementedInterfaces.Any(ti => ti.IsGenericType && ti.GetGenericTypeDefinition() == typeof(IEnumerable <>)) ||
typeInfo.GetGenericTypeDefinition() == typeof(IEnumerable <>);
if (implementsGenericIEnumerableOrIsGenericIEnumerable)
{
type = type.GetGenericArguments()[0];
}
}
var keyProperties = KeyPropertiesCache(type).ToList(); //added ToList() due to issue #418, must work on a list copy
var explicitKeyProperties = ExplicitKeyPropertiesCache(type);
if (keyProperties.Count == 0 && explicitKeyProperties.Count == 0)
{
throw new ArgumentException("Entity must have at least one [Key] or [ExplicitKey] property");
}
var name = GetTableName(type);
keyProperties.AddRange(explicitKeyProperties);
var sb = new StringBuilder();
if (connectionName == "hanaconnection")
{
sb.AppendFormat("delete from \"{0}\" where ", name);
}
else
{
sb.AppendFormat("delete from {0} where ", name);
}
var adapter = GetFormatter(connection);
for (var i = 0; i < keyProperties.Count; i++)
{
var property = keyProperties[i];
adapter.AppendColumnNameEqualsValue(sb, property.Name); //fix for issue #336
if (i < keyProperties.Count - 1)
{
sb.Append(" and ");
}
}
var deleted = connection.Execute(sb.ToString(), entityToDelete, transaction, commandTimeout);
return(deleted > 0);
}
/// <summary>
/// Returns a single entity by a single id from table "Ts".
/// Id must be marked with [Key] attribute.
/// Entities created from interfaces are tracked/intercepted for changes and used by the Update() extension
/// for optimal performance.
/// </summary>
/// <typeparam name="T">Interface or type to create and populate</typeparam>
/// <param name="connection">Open SqlConnection</param>
/// <param name="id">Id of the entity to get, must be marked with [Key] attribute</param>
/// <param name="transaction">The transaction to run under, null (the default) if none</param>
/// <param name="commandTimeout">Number of seconds before command execution timeout</param>
/// <returns>Entity of T</returns>
public static T Get <T>(this IDbConnection connection, dynamic id, IDbTransaction transaction = null, int?commandTimeout = null) where T : class
{
var type = typeof(T);
var connectionName = GetDatabaseType?.Invoke(connection).ToLower()
?? connection.GetType().Name.ToLower();
if (!GetQueries.TryGetValue(type.TypeHandle, out string sql))
{
var key = GetSingleKey <T>(nameof(Get));
var name = GetTableName(type);
if (connectionName == "hanaconnection")
{
sql = $"select * from \"{name}\" where \"{key.Name}\" = :id";
}
else
{
sql = $"select * from \"{name}\" where \"{key.Name}\" = :id";
}
GetQueries[type.TypeHandle] = sql;
}
var dynParms = new DynamicParameters();
if (connectionName == "hanaconnection")
{
dynParms.Add(":id", id);
}
else
{
dynParms.Add("@id", id);
}
T obj;
if (type.IsInterface)
{
var res = connection.Query(sql, dynParms).FirstOrDefault() as IDictionary <string, object>;
if (res == null)
{
return(null);
}
obj = ProxyGenerator.GetInterfaceProxy <T>();
foreach (var property in TypePropertiesCache(type))
{
var val = res[property.Name];
if (val == null)
{
continue;
}
if (property.PropertyType.IsGenericType && property.PropertyType.GetGenericTypeDefinition() == typeof(Nullable <>))
{
var genericType = Nullable.GetUnderlyingType(property.PropertyType);
if (genericType != null)
{
property.SetValue(obj, Convert.ChangeType(val, genericType), null);
}
}
else
{
property.SetValue(obj, Convert.ChangeType(val, property.PropertyType), null);
}
}
((IProxy)obj).IsDirty = false; //reset change tracking and return
}
else
{
obj = connection.Query <T>(sql, dynParms, transaction, commandTimeout: commandTimeout).FirstOrDefault();
}
return(obj);
}
