public override void Execute()
{
if (this.state == StatementState.Deallocated)
{
throw new InvalidOperationException("Statment is not correctly created.");
}
lock (this.db)
{
// Marshal structures to pointer
XsqldaMarshaler marshaler = XsqldaMarshaler.GetInstance();
IntPtr inSqlda = IntPtr.Zero;
IntPtr outSqlda = IntPtr.Zero;
if (this.parameters != null)
{
inSqlda = marshaler.MarshalManagedToNative(this.db.Charset, this.parameters);
}
if (this.statementType == DbStatementType.StoredProcedure)
{
this.Fields.ResetValues();
outSqlda = marshaler.MarshalManagedToNative(this.db.Charset, this.fields);
}
int[] statusVector = FesConnection.GetNewStatusVector();
int trHandle = this.transaction.Handle;
int stmtHandle = this.handle;
FbClient.isc_dsql_execute2(
statusVector,
ref trHandle,
ref stmtHandle,
IscCodes.SQLDA_VERSION1,
inSqlda,
outSqlda);
if (outSqlda != IntPtr.Zero)
{
Descriptor descriptor = marshaler.MarshalNativeToManaged(this.db.Charset, outSqlda);
// This would be an Execute procedure
DbValue[] values = new DbValue[descriptor.Count];
for (int i = 0; i < values.Length; i++)
{
values[i] = new DbValue(this, descriptor[i]);
}
this.outputParams.Enqueue(values);
}
// Free memory
marshaler.CleanUpNativeData(ref inSqlda);
marshaler.CleanUpNativeData(ref outSqlda);
this.db.ParseStatusVector(statusVector);
this.UpdateRecordsAffected();
this.state = StatementState.Executed;
}
}