public void InsertSync <T>(T[] items, DbConnection con, DbTransaction tx = null)
{
var table = TypeToTableEntry <T> .DefaultTable;
var q = new BaseInsertQuery(table).WithValues(items.Select((item, i) => TypeToTableEntry <T> .ToValues(item, table, i)).ToArray());
var returningParts = TypeToTableEntry <T> .Returning(items[0], table);
if (returningParts != null)
{
q = q.Returning(returningParts);
var ids = q.ScalarListSync <int>(con, tx, items.Length == 1);
if (ids.Count != items.Length)
{
throw new InvalidOperationException();
}
for (int i = 0; i < items.Length; i++)
{
TypeToTableEntry <T> .ApplyReturning(items[i], ids[i]);
}
}
else
{
q.ExecuteSync(con, tx, items.Length == 1);
}
}
public static void RegisterTypeToTable <T, TTable>() where TTable : Table
{
var c = typeof(TTable).GetConstructor(
new[] {
typeof(string)
});
if (c == null)
{
throw new ArgumentException($"Table type `{typeof(TTable).FullName}` does not have a constructor that takes a string (the alias)");
}
var a = Expression.Parameter(typeof(string));
TypeToTableEntry <T> .TableConstructor = Expression.Lambda <Func <string, Table> >(Expression.Convert(Expression.New(c, a), typeof(Table)), a).Compile();
TypeToTableEntry <T> .DefaultTable = TypeToTableEntry <T> .TableConstructor("");
var pk = typeof(TTable).GetTypeInfo().GetCustomAttribute <PrimaryKeyAttribute>();
var tableArg = Expression.Parameter(typeof(Table));
var objArg = Expression.Parameter(typeof(object));
if (pk != null)
{
var baseEqMethod = typeof(Field).GetMethods().First(m => m.Name == "EqV" && m.IsGenericMethod);
var l = Expression.Lambda <Func <object, Table, IBooleanPart[]> >(
Expression.NewArrayInit(typeof(IBooleanPart),
pk.Fields.Select(f => typeof(TTable).GetField(f)).Select(fi => {
var originalField = typeof(T).GetField(fi.Name);
if (originalField == null)
{
var prop = typeof(T).GetProperty(fi.Name);
if (prop == null)
{
throw new ArgumentException($"Type `{typeof(T).FullName}` does not have a member of name `{fi.Name}`");
}
return(Expression.Call(Expression.Field(Expression.Convert(tableArg, typeof(TTable)), fi),
baseEqMethod.MakeGenericMethod(prop.PropertyType), Expression.Property(Expression.Convert(objArg, typeof(T)), prop), Expression.Constant(null, typeof(string))));
}
return(Expression.Call(Expression.Field(Expression.Convert(tableArg, typeof(TTable)), fi), baseEqMethod.MakeGenericMethod(originalField.FieldType), Expression.Field(Expression.Convert(objArg, typeof(T)), originalField), Expression.Constant(null, typeof(string))));
})
), objArg, tableArg);
TypeToTableEntry <T> .GetDefaultConditions = l.Compile();
}
var vcVar = Expression.Variable(typeof(ValuesCollection));
var addMethod = typeof(ValuesCollection).GetMethod("Add");
var setVMethod = typeof(Field).GetMethod(nameof(Field.SetV));
var tableFields = typeof(TTable).GetFields().Where(f => f.Name != "TableName" && f.Name != "TableSchema" && f.Name != "TableAlias").ToList();
var tableProps = typeof(TTable).GetProperties();
var nArg = Expression.Parameter(typeof(int));
var concatMethod = typeof(string).GetMethod("Concat", new[] { typeof(string), typeof(string) });
var intToStr = typeof(int).GetMethod("ToString", Type.EmptyTypes);
var memberThings = tableFields.Select(f => {
MemberExpression memberExpression = null;
Type targetType;
MethodCallExpression setMethod;
MemberExpression tableFieldExpr = Expression.Field(Expression.Convert(tableArg, typeof(TTable)), f);
var paraNameExpr = Expression.Call(null, concatMethod, Expression.Constant(f.Name), Expression.Call(nArg, intToStr));
var originalField = typeof(T).GetField(f.Name);
if (originalField == null)
{
var prop = typeof(T).GetProperty(f.Name);
if (prop == null)
{
throw new ArgumentException($"Type `{typeof(T).FullName}` does not have a member of name `{f.Name}`");
}
memberExpression = Expression.Property(Expression.Convert(objArg, typeof(T)), prop);
targetType = prop.PropertyType;
setMethod = Expression.Call(tableFieldExpr, setVMethod.MakeGenericMethod(prop.PropertyType), Expression.Property(Expression.Convert(objArg, typeof(T)), prop), paraNameExpr);
}
else
{
memberExpression = Expression.Field(Expression.Convert(objArg, typeof(T)), originalField);
targetType = originalField.FieldType;
setMethod = Expression.Call(tableFieldExpr, setVMethod.MakeGenericMethod(originalField.FieldType), Expression.Field(Expression.Convert(objArg, typeof(T)), originalField), paraNameExpr);
}
return(memberExpression: memberExpression, targetType: targetType, memberName: f.Name, setMethod: setMethod, tableFieldExpression: tableFieldExpr);
}).Concat(tableProps.Select(
p => {
MemberExpression memberExpression = null;
Type targetType;
MethodCallExpression setMethod;
MemberExpression tableFieldExpr = Expression.Property(Expression.Convert(tableArg, typeof(TTable)), p);;
var paraNameExpr = Expression.Call(null, concatMethod, Expression.Constant(p.Name), Expression.Call(null, intToStr, nArg));
var originalField = typeof(T).GetField(p.Name);
if (originalField == null)
{
var prop = typeof(T).GetProperty(p.Name);
if (prop == null)
{
throw new ArgumentException($"Type `{typeof(T).FullName}` does not have a member of name `{p.Name}`");
}
memberExpression = Expression.Property(Expression.Convert(objArg, typeof(T)), prop);
targetType = prop.PropertyType;
setMethod = Expression.Call(Expression.Property(Expression.Convert(tableArg, typeof(TTable)), p),
setVMethod.MakeGenericMethod(prop.PropertyType), Expression.Property(Expression.Convert(objArg, typeof(T)), prop), paraNameExpr);
}
else
{
memberExpression = Expression.Field(Expression.Convert(objArg, typeof(T)), originalField);
targetType = originalField.FieldType;
setMethod = Expression.Call(tableFieldExpr, setVMethod.MakeGenericMethod(originalField.FieldType), Expression.Field(Expression.Convert(objArg, typeof(T)), originalField), paraNameExpr);
}
return(memberExpression: memberExpression, targetType: targetType, memberName: p.Name, setMethod: setMethod, tableFieldExpression: tableFieldExpr);
})).ToList();
var blockExpressions = new List <Expression> {
Expression.Assign(vcVar, Expression.New(typeof(ValuesCollection)))
};
foreach (var thing in memberThings)
{
var setExpr = Expression.Assign(vcVar, Expression.Call(vcVar, addMethod,
Expression.NewArrayInit(typeof(SetFieldPart), thing.Item4)
));
if (pk != null && pk.Fields.Length == 1 && pk.Fields[0] == thing.memberName && pk.SingleKeyIsAutoincrement)
{
blockExpressions.Add(
Expression.IfThen(Expression.Not(Expression.Equal(Expression.Default(thing.targetType), thing.memberExpression)), setExpr)
);
}
else
{
blockExpressions.Add(setExpr);
}
}
blockExpressions.Add(vcVar);
TypeToTableEntry <T> .ToValues = Expression.Lambda <Func <object, Table, int, ValuesCollection> >(
Expression.Block(
new[] {
vcVar
},
blockExpressions.ToArray()),
objArg,
tableArg,
nArg).Compile();
if (pk != null && pk.Fields.Length == 1 && pk.SingleKeyIsAutoincrement)
{
var mt = memberThings.Single(x => x.memberName == pk.Fields[0]);
if (mt.Item2 == typeof(int) || mt.Item2 == typeof(long))
{
var partArr = Expression.Variable(typeof(IPart[]));
TypeToTableEntry <T> .Returning = Expression.Lambda <Func <object, Table, IPart[]> >(
Expression.Block(
new [] { partArr },
Expression.IfThen(Expression.Equal(Expression.Default(mt.Item2), mt.Item1),
Expression.Assign(partArr, Expression.NewArrayInit(typeof(IPart), mt.Item5))),
partArr),
new [] { objArg, tableArg }
).Compile();
var obj2Arg = Expression.Parameter(typeof(object));
if (mt.Item2 == typeof(long))
{
var conversionMethod = typeof(Convert).GetMethod(
"ToInt64",
new Type[] {
typeof(object)
});
TypeToTableEntry <T> .ApplyReturning = Expression.Lambda <Action <object, object> >(
Expression.Assign(mt.Item1, Expression.Call(conversionMethod, obj2Arg)),
new[] {
objArg,
obj2Arg
}
).Compile();
}
else
{
TypeToTableEntry <T> .ApplyReturning = Expression.Lambda <Action <object, object> >(
Expression.Assign(mt.Item1, Expression.Convert(obj2Arg, mt.Item2)),
new[] {
objArg,
obj2Arg
}
).Compile();
}
}
}
}
