public IDbCommandResult Execute(string command)
{
try
{
_dbConnection.Open();
var query = new SchemaQuery(command);
var schema = GetSchemaFrom(query);
var result = new QueryResult();
foreach (DataColumn column in schema.Columns)
{
if (query.SelectAll || query.ColumnNames.Contains(column.ColumnName.ToLowerInvariant()))
{
result.AddColumn(column.ColumnName, column.DataType);
}
}
foreach (DataRow row in schema.Rows)
{
result.AddRow(row.ItemArray);
}
return(result);
}
finally
{
_dbConnection.Close();
}
}
private IDbCommandResult QueryResultOfDictionary(IEnumerable <IDictionary> dictionaries)
{
var result = new QueryResult();
var columnNames = new HashSet <object>();
foreach (var dictionary in dictionaries)
{
foreach (var key in dictionary.Keys)
{
columnNames.Add(key.ToString());
}
}
foreach (var columnName in columnNames)
{
result.AddColumn(columnName.ToString(), typeof(string));
}
foreach (var dictionary in dictionaries)
{
var values = new List <string>();
foreach (var columnName in columnNames)
{
if (dictionary.Contains(columnName))
{
values.Add(dictionary[columnName].ToString());
}
else
{
values.Add(string.Empty);
}
}
}
return(result);
}
private IDbCommandResult QueryResultOfValues(IEnumerable values, Type type)
{
var result = new QueryResult();
result.AddColumn(type.Name, type);
foreach (var value in values)
{
result.AddRow(value.AsArray());
}
return(result);
}
private static QueryResult CreateResult(IDataRecord reader)
{
var result = new QueryResult();
for (var ii = 0; ii < reader.FieldCount; ii++)
{
var name = reader.GetName(ii);
var type = reader.GetFieldType(ii);
result.AddColumn(name, type);
}
return(result);
}
private IDbCommandResult QueryResultOfDynamicDataRow(IEnumerable <DynamicDataRow> values)
{
var result = new QueryResult();
if (values.IsEmpty())
{
return(result);
}
var columns = values.First().Columns;
columns.Each(c => result.AddColumn(c, typeof(string)));
foreach (var record in values)
{
var theRecord = record;
result.AddRow(columns.Select(c => theRecord[c]));
}
return(result);
}
private IDbCommandResult QueryResultOfType(IEnumerable values, Type type)
{
var result = new QueryResult();
var properties = type.GetProperties();
if (properties.IsEmpty())
{
return(QueryResultOfValues(values, type));
}
foreach (var property in properties)
{
result.AddColumn(property.Name, property.PropertyType);
}
foreach (var value in values)
{
var theValue = value;
var memberValues = properties.Select(p => p.GetValue(theValue, new object[0]));
result.AddRow(memberValues);
}
return(result);
}
