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adding lots more select types support.

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This commit is contained in:
David Lebee
2018-10-25 20:02:17 -05:00
parent 7269071a3a
commit dcaf114a09
4 changed files with 92 additions and 119 deletions
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PoweredSoft.DynamicLinq/Helpers/QueryableHelpers.cs
+42
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@@ -175,12 +175,54 @@ namespace PoweredSoft.DynamicLinq.Helpers
var body = Expression.Call(typeof(Enumerable), "Sum", new[] { notGroupedType }, parameter, innerMemberLambda);
return body;
}
else if (selectType == SelectTypes.Min)
{
var notGroupedType = parameter.Type.GenericTypeArguments[1];
var innerParameter = Expression.Parameter(notGroupedType);
var innerMemberExpression = ResolvePathForExpression(innerParameter, path);
var innerMemberLambda = Expression.Lambda(innerMemberExpression, innerParameter);
var body = Expression.Call(typeof(Enumerable), "Min", new[] { notGroupedType }, parameter, innerMemberLambda);
return body;
}
else if (selectType == SelectTypes.Max)
{
var notGroupedType = parameter.Type.GenericTypeArguments[1];
var innerParameter = Expression.Parameter(notGroupedType);
var innerMemberExpression = ResolvePathForExpression(innerParameter, path);
var innerMemberLambda = Expression.Lambda(innerMemberExpression, innerParameter);
var body = Expression.Call(typeof(Enumerable), "Max", new[] { notGroupedType }, parameter, innerMemberLambda);
return body;
}
else if (selectType == SelectTypes.ToList)
{
var notGroupedType = parameter.Type.GenericTypeArguments[1];
var body = Expression.Call(typeof(Enumerable), "ToList", new[] { notGroupedType }, parameter);
return body;
}
else if (selectType == SelectTypes.First)
{
var notGroupedType = parameter.Type.GenericTypeArguments[1];
var body = Expression.Call(typeof(Enumerable), "First", new[] { notGroupedType }, parameter);
return body;
}
else if (selectType == SelectTypes.Last)
{
var notGroupedType = parameter.Type.GenericTypeArguments[1];
var body = Expression.Call(typeof(Enumerable), "Last", new[] { notGroupedType }, parameter);
return body;
}
else if (selectType == SelectTypes.FirstOrDefault)
{
var notGroupedType = parameter.Type.GenericTypeArguments[1];
var body = Expression.Call(typeof(Enumerable), "FirstOrDefault", new[] { notGroupedType }, parameter);
return body;
}
else if (selectType == SelectTypes.LastOrDefault)
{
var notGroupedType = parameter.Type.GenericTypeArguments[1];
var body = Expression.Call(typeof(Enumerable), "LastOrDefault", new[] { notGroupedType }, parameter);
return body;
}
throw new NotSupportedException($"unkown select type {selectType}");
}