/// <summary>
/// Get the query result data for the current expression.
/// </summary>
/// <param name="model">Expression tree model containing the expression inspector data.</param>
/// <returns>The collection of message data.</returns>
private T[] GetQueryData(Nequeo.Model.ExpressionTreeModel model)
{
List <T> items = new List <T>();
bool foundEnought = false;
string token = null;
int take = Int32.MaxValue;
// Create the query string.
string query = GetQuery(model, out take);
// If a query has been created.
if (!String.IsNullOrEmpty(query))
{
do
{
// Get the set of data.
SelectRequest request = new SelectRequest(query);
if (token != null)
{
request.NextToken = token;
}
// Get the response.
SelectResponse response = _client.Select(request);
// Get the items.
List <Item> segment = response.Items;
token = response.NextToken;
foreach (Item entity in segment)
{
// Add the item found.
items.Add(GetType(entity));
// If we have enought.
if (items.Count >= take)
{
break;
}
}
// If we have enought.
if (items.Count >= take)
{
foundEnought = true;
}
}while (token != null && !foundEnought);
}
// Return the collection of data.
return(items.ToArray());
}
/// <summary>
/// Get the query result data for the current expression.
/// </summary>
/// <param name="model">Expression tree model containing the expression inspector data.</param>
/// <returns>The collection of message data.</returns>
private Message[] GetQueryData(Nequeo.Model.ExpressionTreeModel model)
{
List <Message> data = new List <Message>();
List <Exception> exceptions = new List <System.Exception>();
// Get all the expression model data.
Nequeo.Model.ExpressionModel expressionModel = model.GetExpression(true);
// If where query expression data exists.
if (expressionModel.Where.Length > 0)
{
// For each where query expression.
foreach (string item in expressionModel.Where)
{
// Get the name and value and operator information.
string[] split = item.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
string name = split[0];
string operatorNode = split[1];
string value = split[2].Trim(new char[] { '"' });
// If the current item is the 'Message' model 'Name' property.
if (name.ToLower().Trim() == "name") // "name" = This is the 'Name' property in the 'Message' model
{
// Create a new message.
Message messageData = new Message()
{
Name = value, Data = _message.Data
};
try
{
// Get the message data.
data.Add(SendMessage(messageData));
}
catch (Exception ex) { exceptions.Add(ex); }
}
}
}
// get the list of exceptions.
_exceptions = exceptions.ToArray();
// Return the collection of data.
return(data.ToArray());
}
/// <summary>
/// Create the query string.
/// </summary>
/// <param name="model">The expression tree model containing the query data.</param>
/// <param name="take">The amount of data to take.</param>
/// <returns>The query; else null.</returns>
private string GetQuery(Nequeo.Model.ExpressionTreeModel model, out int take)
{
string query = "";
int takeInternal = 0;
string select = "*";
take = Int32.MaxValue;
// Get all the expression model data.
Nequeo.Model.ExpressionModel expressionModel = model.GetExpression(true);
// Get the select.
if (!String.IsNullOrEmpty(model.Select))
{
// Get the select query.
select = model.Select.Replace("[", "").Replace("]", "");
query += " SELECT " + select;
}
else
{
// Get the default select.
query += " SELECT " + select;
}
// From
query += " FROM " + _domainName;
// Get the where.
if (!String.IsNullOrEmpty(model.Where))
{
// Set the where.
query += " WHERE " + model.Where.
Replace("[", "").Replace("]", "").
Replace("\"", "'").Replace("==", "=").
Replace("&&", "AND").Replace("||", "OR");
}
// Get the orderby.
if (!String.IsNullOrEmpty(model.Orderby))
{
// Set the order by.
query += " ORDER BY " + model.Orderby.Replace("[", "").Replace("]", "");
}
else if (!String.IsNullOrEmpty(model.OrderbyDescending))
{
// Set the order by descending.
query += " ORDER BY " + model.OrderbyDescending.Replace("[", "").Replace("]", "");
}
// Is there a take.
bool isTakeSet = Int32.TryParse(model.Take, out takeInternal);
if (isTakeSet)
{
// If take has been set.
if (takeInternal > 0)
{
take = takeInternal;
}
query += " LIMIT " + take.ToString();
}
// Return the query.
return(query.Trim());
}
