public static DbReader CreateCommand(DbContext db, TemplateQuery query)
{
DbReader r = new DbReader();
var conn = r.conn = db.Database.GetDbConnection();
if (conn.State != ConnectionState.Open)
{
db.Database.OpenConnection();
}
var cmd = r.cmd = conn.CreateCommand();
var t = db.Database.CurrentTransaction;
if (t != null)
{
cmd.Transaction = t.GetDbTransaction();
}
string text = query.Text;
//if (db.Database.IsMySql())
//{
// text = text
// .Replace("[dbo].", "")
// .Replace("[", "`")
// .Replace("]", "`");
//}
cmd.CommandText = text;
foreach (var kvp in query.Values)
{
var p = cmd.CreateParameter();
p.ParameterName = kvp.Key;
p.Value = kvp.Value ?? DBNull.Value;
cmd.Parameters.Add(p);
}
return(r);
}
public static DbReader CreateCommand(ObjectContext db, TemplateQuery query)
{
DbReader r = new DbReader();
var conn = r.conn = (db.Connection as System.Data.Entity.Core.EntityClient.EntityConnection).StoreConnection;
if (conn.State != ConnectionState.Open)
{
db.Connection.Open();
}
var cmd = r.cmd = conn.CreateCommand();
string text = query.Text;
//if (db.Database.IsMySql())
//{
// text = text
// .Replace("[dbo].", "")
// .Replace("[", "`")
// .Replace("]", "`");
//}
cmd.CommandText = text;
foreach (var kvp in query.Values)
{
var p = cmd.CreateParameter();
p.ParameterName = kvp.Key;
p.Value = kvp.Value ?? DBNull.Value;
cmd.Parameters.Add(p);
}
return(r);
}
public static async Task <object> ExecuteScalarAsync(this ObjectContext db, TemplateQuery query)
{
using (var r = await DbReader.CreateCommandAsync(db, query))
{
return(await r.Command.ExecuteScalarAsync());
}
}
public static int ExecuteNonQuery(this DbContext db, TemplateQuery query)
{
using (var r = DbReader.CreateCommand(db, query))
{
return(r.Command.ExecuteNonQuery());
}
}
public static object ExecuteScalar(this ObjectContext db, TemplateQuery query)
{
using (var r = DbReader.CreateCommand(db, query))
{
return(r.Command.ExecuteScalar());
}
}
public static async Task <int> ExecuteNonQueryAsync(this DbContext db, TemplateQuery query)
{
using (var r = await DbReader.CreateCommandAsync(db, query))
{
return(await r.Command.ExecuteNonQueryAsync());
}
}
public static DbReader Create(ObjectContext db, TemplateQuery query)
{
var r = CreateCommand(db, query);
var cmd = r.cmd;
r.reader = cmd.ExecuteReader(CommandBehavior.SequentialAccess);
return(r);
}
public static Task <List <T> > FromSqlAsync <T>(
this DbContext db,
TemplateQuery query,
bool ignoreUnmatchedProperties = false)
where T : class
{
return(GetObjectContext(db).FromSqlAsync <T>(query, ignoreUnmatchedProperties));
}
public static async Task <DbReader> CreateAsync(ObjectContext db, TemplateQuery query)
{
var r = await CreateCommandAsync(db, query);
var cmd = r.cmd;
r.reader = await cmd.ExecuteReaderAsync(CommandBehavior.SequentialAccess);
return(r);
}
///// <summary>
/////
///// </summary>
///// <param name="db"></param>
///// <param name="format"></param>
///// <param name="parameters"></param>
///// <returns></returns>
//internal static Task<JArray> FromSqlToJsonAsync(
// this ObjectContext db,
// string format,
// params object[] parameters)
//{
// return FromSqlToJsonAsync(db, TemplateQuery.FromString(format, parameters));
//}
/// <summary>
///
/// </summary>
/// <param name="db"></param>
/// <param name="query"></param>
/// <returns></returns>
public static async Task <JArray> FromSqlToJsonAsync(
this ObjectContext db,
TemplateQuery query)
{
JArray list = new JArray();
var props = new List <(int index, string name)>();
using (var dbReader = await DbReader.CreateAsync(db, query))
{
var reader = dbReader.Reader;
while (await reader.ReadAsync())
{
if (props.Count == 0)
{
if (reader.FieldCount == 0)
{
return(list);
}
for (int i = 0; i < reader.FieldCount; i++)
{
var n = reader.GetName(i);
props.Add((i, n));
}
}
var item = new JObject();
foreach (var(index, n) in props)
{
var value = reader.GetValue(index);
if (value == null || value == DBNull.Value)
{
continue;
}
item.Add(n, JToken.FromObject(value));
}
list.Add(item);
}
return(list);
}
}
public static async Task <List <T> > FromSqlAsync <T>(
this ObjectContext db,
TemplateQuery[] queries,
bool ignoreUnmatchedProperties = false)
where T : class
{
if (queries == null || queries.Length == 0)
{
throw new ArgumentException($"No query specified");
}
TemplateQuery q = (FormattableString)$"";
for (int i = 0; i < queries.Length; i++)
{
q = queries[i];
if (i == queries.Length - 1)
{
break;
}
await db.ExecuteNonQueryAsync(q);
}
return(await db.FromSqlAsync <T>(q, ignoreUnmatchedProperties));
}
public static async Task <List <T> > FromSqlAsync <T>(
this ObjectContext db,
TemplateQuery query,
bool ignoreUnmatchedProperties = false)
where T : class
{
List <T> list = new List <T>();
var props = new List <(int index, PropertyInfo property, string name)>();
using (var dbReader = await DbReader.CreateAsync(db, query))
{
var reader = dbReader.Reader;
while (await reader.ReadAsync())
{
if (props.Count == 0)
{
if (reader.FieldCount == 0)
{
return(list);
}
Type type = typeof(T);
List <string> notFound = new List <string>();
for (int i = 0; i < reader.FieldCount; i++)
{
var n = reader.GetName(i);
var key = $"{type.FullName}.{n}";
var p = propertyCache.GetOrAdd(key, a => type.GetProperty(n, BindingFlags.IgnoreCase | BindingFlags.Instance | BindingFlags.SetProperty | BindingFlags.Public));
props.Add((i, p, n));
}
var empty = props.Where(x => x.property == null).Select(x => x.name);
if (empty.Any())
{
if (!ignoreUnmatchedProperties)
{
throw new InvalidOperationException($"Properties {string.Join(",", empty)} not found in {type.FullName}");
}
props = props.Where(x => x.property != null).ToList();
}
}
var item = Activator.CreateInstance <T>();
foreach (var(index, property, n) in props)
{
var value = reader.GetValue(index);
if (value == null || value == DBNull.Value)
{
continue;
}
var type = Nullable.GetUnderlyingType(property.PropertyType) ?? property.PropertyType;
if (value.GetType() != type)
{
value = Convert.ChangeType(value, type);
}
property.SetValue(item, value);
}
list.Add(item);
}
return(list);
}
}
public TemplateQuery ToSqlQuery()
{
return(TemplateQuery.Join(prefix, separator, fragments));
}
/// <summary>
///
/// </summary>
/// <param name="db"></param>
/// <param name="query"></param>
/// <returns></returns>
public static JArray FromSqlToJson(
this DbContext db,
TemplateQuery query)
{
return(GetObjectContext(db).FromSqlToJson(query));
}
public static int ExecuteNonQuery(this DbContext db, TemplateQuery query)
{
return(GetObjectContext(db).ExecuteNonQuery(query));
}
public static Task <int> ExecuteNonQueryAsync(this DbContext db, TemplateQuery query)
{
return(GetObjectContext(db).ExecuteNonQueryAsync(query));
}
///// <summary>
/////
///// </summary>
///// <param name="db"></param>
///// <param name="format"></param>
///// <param name="parameters"></param>
///// <returns></returns>
//internal static Task<JArray> FromSqlToJsonAsync(
// this DbContext db,
// string format,
// params object[] parameters)
//{
// return FromSqlToJsonAsync(db, TemplateQuery.FromString(format, parameters));
//}
/// <summary>
///
/// </summary>
/// <param name="db"></param>
/// <param name="query"></param>
/// <returns></returns>
public static Task <JArray> FromSqlToJsonAsync(
this DbContext db,
TemplateQuery query)
{
return(GetObjectContext(db).FromSqlToJsonAsync(query));
}
public void Add(TemplateQuery fragment)
{
this.fragments.Add(fragment);
}
public SqlQueryFormattable(TemplateQuery query)
{
this.Format = query.ToString();
this.values = query.fragments.Where(x => x.hasArgument).Select(x => x.argument).ToArray();
}
