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Commit 3691fe13 authored by Marc Gravell's avatar Marc Gravell
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allow null arrays on suitable RDBMS

parent bff05e72
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Showing with 69 additions and 73 deletions
Dapper NET40/SqlMapper.cs
View file @ 3691fe13
......@@ -2394,96 +2394,92 @@ public static void PackListParameters(IDbCommand command, string namePrefix, obj
// initially we tried TVP, however it performs quite poorly.
// keep in mind SQL support up to 2000 params easily in sp_executesql, needing more is rare
var list = value as IEnumerable;
var count = 0;
if (list != null)
if (FeatureSupport.Get(command.Connection).Arrays)
{
if (FeatureSupport.Get(command.Connection).Arrays)
{
var arrayParm = command.CreateParameter();
arrayParm.Value = list;
arrayParm.ParameterName = namePrefix;
command.Parameters.Add(arrayParm);
}
else
var arrayParm = command.CreateParameter();
arrayParm.Value = value ?? DBNull.Value;
arrayParm.ParameterName = namePrefix;
command.Parameters.Add(arrayParm);
}
else
{
var list = value as IEnumerable;
var count = 0;
bool isString = value is IEnumerable<string>;
bool isDbString = value is IEnumerable<DbString>;
foreach (var item in list)
{
bool isString = value is IEnumerable<string>;
bool isDbString = value is IEnumerable<DbString>;
foreach (var item in list)
count++;
var listParam = command.CreateParameter();
listParam.ParameterName = namePrefix + count;
listParam.Value = item ?? DBNull.Value;
if (isString)
{
count++;
var listParam = command.CreateParameter();
listParam.ParameterName = namePrefix + count;
listParam.Value = item ?? DBNull.Value;
if (isString)
listParam.Size = 4000;
if (item != null && ((string)item).Length > 4000)
{
listParam.Size = 4000;
if (item != null && ((string)item).Length > 4000)
{
listParam.Size = -1;
}
listParam.Size = -1;
}
if (isDbString && item as DbString != null)
}
if (isDbString && item as DbString != null)
{
var str = item as DbString;
str.AddParameter(command, listParam.ParameterName);
}
else
{
command.Parameters.Add(listParam);
}
}
var regexIncludingUnknown = @"([?@:]" + Regex.Escape(namePrefix) + @")(\s+(?i)unknown(?-i))?";
if (count == 0)
{
command.CommandText = Regex.Replace(command.CommandText, regexIncludingUnknown, match =>
{
var variableName = match.Groups[1].Value;
if (match.Groups[2].Success)
{
var str = item as DbString;
str.AddParameter(command, listParam.ParameterName);
// looks like an optimize hint; leave it alone!
return match.Value;
}
else
{
command.Parameters.Add(listParam);
return "(SELECT " + variableName + " WHERE 1 = 0)";
}
}
var regexIncludingUnknown = @"([?@:]" + Regex.Escape(namePrefix) + @")(\s+(?i)unknown(?-i))?";
if (count == 0)
});
var dummyParam = command.CreateParameter();
dummyParam.ParameterName = namePrefix;
dummyParam.Value = DBNull.Value;
command.Parameters.Add(dummyParam);
}
else
{
command.CommandText = Regex.Replace(command.CommandText, regexIncludingUnknown, match =>
{
command.CommandText = Regex.Replace(command.CommandText, regexIncludingUnknown, match =>
var variableName = match.Groups[1].Value;
if (match.Groups[2].Success)
{
var variableName = match.Groups[1].Value;
if (match.Groups[2].Success)
{
// looks like an optimize hint; leave it alone!
return match.Value;
}
else
// looks like an optimize hint; expand it
var suffix = match.Groups[2].Value;
var sb = new StringBuilder(variableName).Append(1).Append(suffix);
for (int i = 2; i <= count; i++)
{
return "(SELECT " + variableName + " WHERE 1 = 0)";
sb.Append(',').Append(variableName).Append(i).Append(suffix);
}
});
var dummyParam = command.CreateParameter();
dummyParam.ParameterName = namePrefix;
dummyParam.Value = DBNull.Value;
command.Parameters.Add(dummyParam);
}
else
{
command.CommandText = Regex.Replace(command.CommandText, regexIncludingUnknown, match =>
return sb.ToString();
}
else
{
var variableName = match.Groups[1].Value;
if (match.Groups[2].Success)
var sb = new StringBuilder("(").Append(variableName).Append(1);
for (int i = 2; i <= count; i++)
{
// looks like an optimize hint; expand it
var suffix = match.Groups[2].Value;
var sb = new StringBuilder(variableName).Append(1).Append(suffix);
for (int i = 2; i <= count; i++)
{
sb.Append(',').Append(variableName).Append(i).Append(suffix);
}
return sb.ToString();
sb.Append(',').Append(variableName).Append(i);
}
else
{
var sb = new StringBuilder("(").Append(variableName).Append(1);
for (int i = 2; i <= count; i++)
{
sb.Append(',').Append(variableName).Append(i);
}
return sb.Append(')').ToString();
}
});
}
return sb.Append(')').ToString();
}
});
}
}
......
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