public async Task <object> ExecuteQueryAsync(Query query, IDictionary <string, object> parameters)
{
var sqlQuery = query as SqlQuery;
var templateContext = new TemplateContext();
foreach (var parameter in parameters)
{
templateContext.SetValue(parameter.Key, parameter.Value);
}
var tokenizedQuery = await _liquidTemplateManager.RenderAsync(sqlQuery.Template, templateContext);
var connection = _store.Configuration.ConnectionFactory.CreateConnection();
var dialect = SqlDialectFactory.For(connection);
var results = new List <JObject>();
if (!SqlParser.TryParse(tokenizedQuery, dialect, _store.Configuration.TablePrefix, out var rawQuery, out var rawParameters, out var messages))
{
return(results);
}
if (sqlQuery.ReturnDocuments)
{
IEnumerable <int> documentIds;
using (connection)
{
connection.Open();
documentIds = await connection.QueryAsync <int>(rawQuery, rawParameters);
}
var documents = await _session.GetAsync <object>(documentIds.ToArray());
foreach (var document in documents)
{
results.Add(JObject.FromObject(document));
}
}
else
{
IEnumerable <dynamic> queryResults;
using (connection)
{
connection.Open();
queryResults = await connection.QueryAsync(rawQuery, rawParameters);
}
foreach (var document in queryResults)
{
results.Add(JObject.FromObject(document));
}
}
return(results.ToArray());
}
public static bool TryParse(string sql, ISqlDialect dialect, string tablePrefix, out string query, out Dictionary <string, object> parameters, out IEnumerable <string> messages)
{
try
{
var tree = new Irony.Parsing.Parser(language).Parse(sql);
if (tree.HasErrors())
{
query = null;
parameters = null;
messages = tree
.ParserMessages
.Select(x => $"{x.Message} at line:{x.Location.Line}, col:{x.Location.Column}")
.ToArray();
return(false);
}
var sqlParser = new SqlParser(tree, dialect, tablePrefix);
sqlParser.Evaluate();
query = sqlParser._builder.ToString();
parameters = sqlParser._parameters;
messages = Array.Empty <string>();
return(true);
}
catch (Exception e)
{
query = null;
parameters = null;
messages = new string[] { "Unexpected error: " + e.Message };
}
return(false);
}
