/
ScalarFunctionExpression.cs
54 lines (46 loc) · 1.49 KB
/
ScalarFunctionExpression.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
namespace DevZest.Data.Primitives
{
/// <summary>
/// Represents scalar function expression.
/// </summary>
/// <typeparam name="T">Data type of the column.</typeparam>
public abstract class ScalarFunctionExpression<T> : FunctionExpression<T>
{
/// <summary>
/// Initializes a new instance of <see cref="ScalarFunctionExpression{T}"/> class.
/// </summary>
/// <param name="parameters">The parameters.</param>
protected ScalarFunctionExpression(params Column[] parameters)
: base(parameters)
{
}
/// <inheritdoc/>
protected override IModels GetScalarSourceModels()
{
if (Parameters == null)
return Models.Empty;
var result = Models.Empty;
foreach (var column in Parameters)
{
if (column == null)
continue;
result = result.Union(column.ScalarSourceModels);
}
return result.Seal();
}
/// <inheritdoc/>
protected override IModels GetAggregateBaseModels()
{
if (Parameters == null)
return Models.Empty;
var result = Models.Empty;
foreach (var column in Parameters)
{
if (column == null)
continue;
result = result.Union(column.AggregateSourceModels);
}
return result.Seal();
}
}
}