/// <summary>
/// Creates the command to get the number of rows in the given section.
/// </summary>
/// <returns>
/// The command to get the number of rows in the given section.
/// </returns>
/// <param name='section'>
/// The section to get the number of rows for.
/// </param>
protected virtual SQLiteCommand CreateRowCountCommand(int section)
{
string query = "select count (*) from \"" + TableName + "\"";
object[] args;
if (SectionExpression != null)
{
SQLiteWhereExpression where = new SQLiteWhereExpression();
SQLiteAndExpression and = new SQLiteAndExpression();
and.Add(new SQLiteEqualToExpression(SectionExpression, SectionTitles[section]));
if (SearchExpression != null && SearchExpression.Expression != null)
{
and.AddRange(SearchExpression.Expression);
}
where.Expression = and;
query += " " + where.ToString(out args);
}
else if (SearchExpression != null)
{
query += " " + SearchExpression.ToString(out args);
}
else
{
args = new object [0];
}
return(Connection.CreateCommand(query, args));
}
SQLiteWhereExpression ParseSearchExpression(string text)
{
SQLiteWhereExpression where = new SQLiteWhereExpression();
SQLiteAndExpression and = new SQLiteAndExpression();
List <string> fields;
bool quoted;
for (int i = 0; i < text.Length; i++)
{
string token = GetNextToken(text, ref i, true, out quoted);
if (i < text.Length && text[i] == ':')
{
// The user may have requested for a particular field be matched...
i++;
if (string.IsNullOrEmpty(token))
{
// lone ':', just ignore...
continue;
}
string match = GetNextToken(text, ref i, false, out quoted);
if (match != null)
{
if (aliases.TryGetValue(token, out fields))
{
SQLiteOrExpression or = new SQLiteOrExpression();
// Search only the aliased fields for the string token...
foreach (var field in fields)
{
or.Add(new SQLiteLikeExpression(field, match));
}
and.Add(or);
}
}
else
{
SQLiteOrExpression or = new SQLiteOrExpression();
foreach (var col in types)
{
if (col.Value == typeof(string))
{
or.Add(new SQLiteLikeExpression(col.Key, token));
}
}
and.Add(or);
}
}
else if (token != null)
{
// Search all fields for this string token...
SQLiteOrExpression or = new SQLiteOrExpression();
if (!quoted && aliases.TryGetValue(token, out fields))
{
foreach (var field in fields)
{
if (types[field] == typeof(bool))
{
or.Add(new SQLiteIsExpression(field, true));
}
}
}
foreach (var col in types)
{
if (col.Value == typeof(string))
{
or.Add(new SQLiteLikeExpression(col.Key, token));
}
}
and.Add(or);
}
}
if (and.Count == 0)
{
return(null);
}
where.Expression = and;
return(where);
}
