Class ExpressionHelper

An expression helper.

Inheritance

System.Object

ExpressionHelper

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: Kephas.Data.Client.Queries.Conversion.ExpressionConverters

Assembly: Kephas.Data.Client.dll

Syntax

public static class ExpressionHelper

Methods

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GetConvertedValueExpression(Object, Type)

Gets an expression for the value so that it has a compatible type with the member type.

Declaration

public static Expression GetConvertedValueExpression(object value, Type targetType)

Parameters

Type	Name	Description
System.Object	value	The value.
System.Type	targetType	The target type.

Returns

Type	Description
System.Linq.Expressions.Expression	The converted value expression.

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GetMethodInfo<T1>(Expression<Func<T1>>)

Gets the method information for the provided function definition.

Declaration

public static MethodInfo GetMethodInfo<T1>(Expression<Func<T1>> expression)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression<System.Func<T1>>	expression	A Func{T1} to process.

Returns

Type	Description
System.Reflection.MethodInfo	The method information.

Type Parameters

Name	Description
T1	Generic type parameter T1.

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GetMethodInfo<T1, T2>(Expression<Func<T1, T2>>)

Gets the method information for the provided function definition.

Declaration

public static MethodInfo GetMethodInfo<T1, T2>(Expression<Func<T1, T2>> expression)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression<System.Func<T1, T2>>	expression	A Func{T1,T2} to process.

Returns

Type	Description
System.Reflection.MethodInfo	The method information.

Type Parameters

Name	Description
T1	Generic type parameter T1.
T2	Generic type parameter T2.

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GetMethodInfo<T1, T2, T3>(Expression<Func<T1, T2, T3>>)

Gets the method information for the provided function definition.

Declaration

public static MethodInfo GetMethodInfo<T1, T2, T3>(Expression<Func<T1, T2, T3>> expression)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression<System.Func<T1, T2, T3>>	expression	A Func{T1,T2,T3} to process.

Returns

Type	Description
System.Reflection.MethodInfo	The method information.

Type Parameters

Name	Description
T1	Generic type parameter T1.
T2	Generic type parameter T2.
T3	Generic type parameter T3.

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GetMethodInfo<T1, T2, T3, T4>(Expression<Func<T1, T2, T3, T4>>)

Gets the method information for the provided function definition.

Declaration

public static MethodInfo GetMethodInfo<T1, T2, T3, T4>(Expression<Func<T1, T2, T3, T4>> expression)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression<System.Func<T1, T2, T3, T4>>	expression	A Func{T1,T2,T3,T4} to process.

Returns

Type	Description
System.Reflection.MethodInfo	The method information.

Type Parameters

Name	Description
T1	Generic type parameter T1.
T2	Generic type parameter T2.
T3	Generic type parameter T3.
T4	Generic type parameter T4.

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GetMethodInfo<T1, T2, T3, T4, T5>(Expression<Func<T1, T2, T3, T4, T5>>)

Gets the method information for the provided function definition.

Declaration

public static MethodInfo GetMethodInfo<T1, T2, T3, T4, T5>(Expression<Func<T1, T2, T3, T4, T5>> expression)

Parameters

Type	Name	Description
System.Linq.Expressions.Expression<System.Func<T1, T2, T3, T4, T5>>	expression	A Func{T1,T2,T3,T4,T5} to process.

Returns

Type	Description
System.Reflection.MethodInfo	The method information.

Type Parameters

Name	Description
T1	Generic type parameter T1.
T2	Generic type parameter T2.
T3	Generic type parameter T3.
T4	Generic type parameter T4.
T5	Generic type parameter T5.

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NormalizeBinaryExpressionArgs(IList<Expression>)

Normalizes the binary expression arguments.

Declaration

public static IList<Expression> NormalizeBinaryExpressionArgs(IList<Expression> args)

Parameters

Type	Name	Description
System.Collections.Generic.IList<System.Linq.Expressions.Expression>	args	The arguments.

Returns

Type	Description
System.Collections.Generic.IList<System.Linq.Expressions.Expression>	A list of argument expressions.

Remarks

In comparisons, the client may send mismatched types, mainly due to untyped languages like JavaScript. This method converts the second operand to the type of the member represented by the first operand, so that the comparison does not fail.