//生成语句插入的成员。
private void GenerateForInsertStatementMembers(GenerateContext context, DbNewExpression newitem,
QueryBaseFragment source, InsertFragment insert, Func <PropertyInfo, ColumnMetadata> getmember)
{
int count = 0;
foreach (var item in newitem.Members)
{
count++;
insert.CreateMember(null, getmember((PropertyInfo)item.Key));
IMemberFragment member = null;
if (_CreateExpressionMethods.TryGetValue(item.Value.ExpressionType, out CreateExpressionDelegate method))
{
member = RetrievalMemberForExpression(context, source, item.Value, item.Key, false);
}
else if (_RetrievalMemberMethods.TryGetValue(item.Value.ExpressionType, out RetrievalMemberDelegate method1))
{
member = method1(context, source, item.Value, item.Key, false);
}
else
{
throw new NotSupportedException(Res.NotSupportedCreateInsertMember);
}
if (source.Members.Count != count)
{
source.Members.Add(member);
}
}
}
internal static InsertFragment InsertTemptable(this ContentBase data, TemporaryTableFragment temptable, CommitKeyUnit unit, DbName name = null)
{
var members = unit.Keys.Concat(unit.Members).Select(a => a.Metadata);
var context = data.GenerateContext;
var table = new TableFragment(context, unit.Table, name);
var select = new SelectFragment(context, temptable);
var current = new InsertFragment(context, table, select);
foreach (var member in members)
{
select.CreateMember(null, temptable.GetMember(member));
current.CreateMember(null, member);
}
return(current);
}
public static InsertFragment Insert(this GenerateContext context, ISourceFragment source, TableMetadata target
, IEnumerable <ColumnMetadata> members)
{
DbName name = null;
if (context.Data is ContentBase data)
{
name = data.TargetName;
}
var table = new TableFragment(context, target, name);
var select = new SelectFragment(context, source);
var current = new InsertFragment(context, table, select);
foreach (var member in members)
{
select.CreateMember(null, source.GetMember(member));
current.CreateMember(null, member);
}
return(current);
}