public void ToParameterDirection()
{
Assert.AreEqual(ParameterDirection.Input, HsqlConvert.ToParameterDirection(ParameterMode.In));
Assert.AreEqual(ParameterDirection.InputOutput, HsqlConvert.ToParameterDirection(ParameterMode.InOut));
Assert.AreEqual(ParameterDirection.Output, HsqlConvert.ToParameterDirection(ParameterMode.Out));
Assert.AreEqual(null, HsqlConvert.ToParameterDirection(ParameterMode.Unknown));
}
internal void DeriveParametersInternal()
{
if (CommandType != CommandType.StoredProcedure)
{
throw new InvalidOperationException(string.Format(
"Operation not supported for CommandType: "
+ CommandType.ToString()));
}
Prepare();
HsqlStatement statement = m_statement;
ParameterMetaData pmd = statement.ParameterDescriptor.metaData;
string[] parameterNames = pmd.colNames;
int count = parameterNames.Length;
HsqlParameter[] parameters = new HsqlParameter[count];
for (int i = 0; i < count; i++)
{
string name = parameterNames[i];
ParameterMode mode = (ParameterMode)pmd.paramMode[i];
int type = pmd.colTypes[i];
int precision = pmd.colSizes[i];
int scale = pmd.colScales[i];
int nullability = pmd.colNullable[i];
HsqlProviderType providerType = (HsqlProviderType)type;
DbType dbType = HsqlConvert.ToDbType(providerType);
ParameterDirection?direction = HsqlConvert.ToParameterDirection(mode);
bool?isNullable = IsNullable(nullability);
bool isCharacter = IsCharacterType(type);
bool isNumber = (!isCharacter) && IsNumberType(type);
bool isTemporal = !(isCharacter || isNumber) && IsTemporalType(type);
int size = ToBufferSize(type, precision);
if (isCharacter)
{
precision = 0;
scale = 0;
}
else if (isNumber || isTemporal)
{
if (precision == 0)
{
precision = ToDefaultPrecision(type);
}
}
HsqlParameter parameter = new HsqlParameter();
parameter.DbType = dbType;
if (direction != null)
{
parameter.Direction = direction.Value;
}
if (isNullable != null)
{
parameter.IsNullable = isNullable.Value;
}
parameter.ParameterName = name;
parameter.Precision = (byte)Math.Min(byte.MaxValue, precision);
parameter.ProviderType = providerType;
parameter.Scale = (byte)Math.Min(byte.MaxValue, scale);
parameter.Size = size;
parameter.SourceVersion = DataRowVersion.Default;
parameters[i] = parameter;
}
HsqlParameterCollection pc = Parameters;
pc.Clear();
foreach (HsqlParameter parameter in parameters)
{
pc.Add(parameter);
}
}