protected override IBuildContext BuildMethodCall(ExpressionBuilder builder, MethodCallExpression methodCall, BuildInfo buildInfo)
{
var sequence = builder.BuildSequence(new BuildInfo(buildInfo, methodCall.Arguments[0]));
var arg = methodCall.Arguments[1].Unwrap();
ISqlExpression expr;
var parameterize = Common.Configuration.Linq.ParameterizeTakeSkip;
if (arg.NodeType == ExpressionType.Lambda)
{
arg = ((LambdaExpression)arg).Body.Unwrap();
expr = builder.ConvertToSql(sequence, arg);
}
else
{
// revert unwrap
arg = methodCall.Arguments[1];
expr = builder.ConvertToSql(sequence, arg);
if (expr.ElementType == QueryElementType.SqlValue)
{
var param = builder.BuildParameter(methodCall.Arguments[1], null, true).SqlParameter;
param.Name = methodCall.Method.Name == "Take" ? "take" : "skip";
param.IsQueryParameter = param.IsQueryParameter && parameterize;
expr = param;
}
}
if (methodCall.Method.Name == "Take")
{
TakeHints?hints = null;
if (methodCall.Arguments.Count == 3 && methodCall.Arguments[2].Type == typeof(TakeHints))
{
hints = (TakeHints)methodCall.Arguments[2].EvaluateExpression() !;
}
BuildTake(builder, sequence, expr, hints);
}
else
{
BuildSkip(builder, sequence, expr);
}
return(sequence);
}
