dotnet-dynamic-linq/PoweredSoft.DynamicLinq/Constants.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
namespace PoweredSoft.DynamicLinq
{
public enum ConditionOperators
{
Equal,
NotEqual,
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GreaterThan,
GreaterThanOrEqual,
LessThan,
LessThanOrEqual,
Contains,
StartsWith,
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EndsWith,
In,
NotIn
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}
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public enum QueryConvertStrategy
{
LeaveAsIs,
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ConvertConstantToComparedPropertyOrField,
SpecifyType
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}
public enum QueryCollectionHandling
{
Any,
All
}
public enum QueryOrderByDirection
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{
Ascending,
Descending
}
public enum SelectTypes
{
Key,
Count,
LongCount,
Sum,
Average,
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ToList,
PathToList,
Path
}
public enum SelectCollectionHandling
{
LeaveAsIs,
Flatten
}
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internal static class Constants
{
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internal static readonly MethodInfo GroupByMethod = typeof(Queryable).GetMethods().First(t => t.Name == "GroupBy");
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internal static readonly MethodInfo GroupByMethodWithEqualityComparer = typeof(Queryable).GetMethods().First(t => t.Name == "GroupBy" && t.GetParameters().Any(t2 => t2.Name == "comparer"));
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internal static readonly MethodInfo StringEqualWithComparisation = typeof(string).GetMethod("Equals", new Type[] { typeof(string), typeof(StringComparison) });
internal static readonly MethodInfo ContainsMethod = typeof(string).GetMethod("Contains", new Type[] { typeof(string) });
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internal static readonly MethodInfo StartsWithMethod = typeof(string).GetMethod("StartsWith", new Type[] { typeof(string) });
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internal static readonly MethodInfo StartsWithMethodWithComparisation = typeof(string).GetMethod("StartsWith", new Type[] { typeof(string), typeof(StringComparison) });
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internal static readonly MethodInfo EndsWithMethod = typeof(string).GetMethod("EndsWith", new Type[] { typeof(string) });
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internal static readonly MethodInfo EndsWithMethodWithComparisation = typeof(string).GetMethod("EndsWith", new Type[] { typeof(string), typeof(StringComparison) });
internal static readonly MethodInfo IndexOfMethod = typeof(string).GetMethod("IndexOf", new Type[] { typeof(string), typeof(StringComparison) });
internal static readonly MethodInfo AnyMethod = typeof(Enumerable).GetMethods(BindingFlags.Static | BindingFlags.Public).First(t => t.Name == "Any" && t.GetParameters().Count() == 2);
internal static readonly MethodInfo AllMethod = typeof(Enumerable).GetMethods(BindingFlags.Static | BindingFlags.Public).First(t => t.Name == "All" && t.GetParameters().Count() == 2);
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}
}