public void ConvertToOperator()
{
Assert.AreEqual(modulus, converter.ToOperator(0));
Assert.AreEqual(minus, converter.ToOperator(1));
Assert.AreEqual(power, converter.ToOperator(2));
Assert.AreEqual(log, converter.ToOperator(3));
Assert.AreEqual(factorial, converter.ToOperator(4));
}
private ICollection <Filter> GetFilters()
{
var filters = new List <Filter>();
for (int i = 0; i < filterDataGridView.Rows.Count - 1; i++)
{
var tableName = filterDataGridView.Rows[i].Cells[0].Value.ToString();
var columnName = filterDataGridView.Rows[i].Cells[1].Value.ToString();
var operatorType = OperatorConverter.ToOperator(filterDataGridView.Rows[i].Cells[2].Value.ToString());
var value = filterDataGridView.Rows[i].Cells[3].Value.ToString();
var filter = new Filter(tableName, columnName, operatorType, value);
filters.Add(filter);
}
return(filters);
}
private ICollection <Join> GetJoins()
{
var joins = new List <Join>();
for (int i = 0; i < joinDataGridView.Rows.Count - 1; i++)
{
var leftTableName = joinDataGridView.Rows[i].Cells[0].Value.ToString();
var leftColumnName = joinDataGridView.Rows[i].Cells[1].Value.ToString();
var rightTableName = joinDataGridView.Rows[i].Cells[2].Value.ToString();
var rightColumnName = joinDataGridView.Rows[i].Cells[3].Value.ToString();
var operatorType = OperatorConverter.ToOperator(filterDataGridView.Rows[i].Cells[4].Value.ToString());
var join = new Join(leftTableName, leftColumnName, rightTableName, rightColumnName, operatorType);
joins.Add(join);
}
return(joins);
}
public decimal Evaluate(INode node)
{
if (node == null)
{
return(0);
}
if (node.IsOperand)
{
return(node.Value);
}
return(Calculate(
OperatorConverter.ToOperator((int)node.Value),
Evaluate(node.Left),
Evaluate(node.Right)
));
}
