/// <summary>
/// Applies the current values in this object's parameter collection
/// to the internal statement object, if any, that represents the
/// prepared form of this command.
/// </summary>
/// <remarks>
/// <para>
/// If this command is not presently prepared, no action is taken.
/// </para>
/// <para>
/// On the other hand, this operation is invoked internally whenever
/// an <c>ExecuteXXX</c> operation is invoked on a prepared
/// <c>HsqlCommand</c> instance.
/// </para>
/// </remarks>
/// <param name="batch">
/// <c>true</c> to apply the parameters toward batch execution
/// </param>
/// <exception cref="HsqlDataSourceException">
/// When unbound parameters exist. An unbound parameter condition
/// occurs when a parameter's existence is declared in the command
/// text using a marker or can be inferred from
/// the signature of the stored procedure to be executed, and
/// the parameter collection of this <c>HsqlCommand</c> contains
/// no corresponding <c>HsqlParameter</c> instance or the
/// corresponding <c>HsqlParameter</c> instance exists, but either
/// it represents an explicitly required (non-defaulted) value binding
/// site and the value has not explicitly been set or it represents a
/// non-nullable binding site and its present value is either
/// implicitly null or has explicily been set null.
/// </exception>
internal void ApplyParameters(bool batch)
{
HsqlStatement statement = m_statement;
if (statement == null)
{
return;
}
HsqlParameterCollection parameters = m_dbParameterCollection;
if (parameters == null || parameters.Count == 0)
{
int expectedCount = statement.ParameterCount;
if (expectedCount == 0)
{
statement.SetParameterValues(s_noParameters);
return;
}
throw new HsqlDataSourceException(string.Format(
"{0} unbound parameters exist.",
expectedCount)); // NOI18N
}
TokenList tokenList = TokenList;
int[] bindTypes = statement.ParameterTypes;
object[] values = new object[tokenList.ParameterCount];
int boundValueCount = 0;
foreach (HsqlParameter parameter in parameters)
{
switch (parameter.Direction)
{
case ParameterDirection.Input:
case ParameterDirection.InputOutput:
{
string name = parameter.ParameterName;
int[] bindPositions = tokenList
.GetNamedParameterBindPositionsInternal(name);
for (int i = 0; i < bindPositions.Length; i++)
{
int bindPosition = bindPositions[i];
int bindType = bindTypes[bindPosition];
object value = HsqlConvert.FromDotNet.ToObject(
parameter.Value, bindType);
values[bindPosition] = value;
boundValueCount++;
}
break;
}
}
}
if (boundValueCount < values.Length)
{
int unboundCount = (values.Length - boundValueCount);
throw new HsqlDataSourceException(string.Format(
"{0} unbound Parameters Exist.", unboundCount)); // NOI18N
}
if (batch)
{
statement.AddBatch(values);
}
else
{
statement.SetParameterValues(values);
}
}