public static FilterLambdaOperatorParameters CreateFilter(ItemFilterGroupDescriptor descriptor, Type modelType, object entity)
=> new FilterLambdaOperatorParameters
(
CreateFilterGroupBody(descriptor, entity),
modelType,
parameterName
);
public void CanCreateSerachByIdExpression()
{
//arrange
ItemFilterGroupDescriptor itemFilterGroupDescriptor = new ItemFilterGroupDescriptor
{
Filters = new List <ItemFilterDescriptorBase>
{
new MemberSourceFilterDescriptor
{
Field = "UserId",
MemberSource = "UserId",
Operator = "eq",
Type = "System.Int32"
}
}
};
//act
FilterLambdaOperatorParameters filterLambdaOperatorDescriptor = serviceProvider.GetRequiredService <IGetItemFilterBuilder>().CreateFilter
(
itemFilterGroupDescriptor,
typeof(ResidencyModel),
residency
);
FilterLambdaOperator filterLambdaOperator = (FilterLambdaOperator)serviceProvider.GetRequiredService <IMapper>().MapToOperator(filterLambdaOperatorDescriptor);
Expression <Func <ResidencyModel, bool> > filter = (Expression <Func <ResidencyModel, bool> >)filterLambdaOperator.Build();
//assert
AssertFilterStringIsCorrect
(
filter,
"f => (f.UserId == 3)"
);
}
public void CanCreateSerachByIdAndFirstNameAndLastNameExpression()
{
//arrange
ItemFilterGroupDescriptor itemFilterGroupDescriptor = new ItemFilterGroupDescriptor
{
Filters = new List <ItemFilterDescriptorBase>
{
new MemberSourceFilterDescriptor
{
Field = "UserId",
MemberSource = "UserId",
Operator = "eq",
Type = "System.Int32"
},
new ItemFilterGroupDescriptor
{
Filters = new List <ItemFilterDescriptorBase>
{
new MemberSourceFilterDescriptor
{
Field = "CitizenshipStatus",
MemberSource = "CitizenshipStatus",
Operator = "eq",
Type = "System.String"
},
new MemberSourceFilterDescriptor
{
Field = "ResidentState",
MemberSource = "ResidentState",
Operator = "eq",
Type = "System.String"
}
},
Logic = "and"
}
},
Logic = "and"
};
//act
FilterLambdaOperatorParameters filterLambdaOperatorDescriptor = serviceProvider.GetRequiredService <IGetItemFilterBuilder>().CreateFilter
(
itemFilterGroupDescriptor,
typeof(ResidencyModel),
residency
);
FilterLambdaOperator filterLambdaOperator = (FilterLambdaOperator)serviceProvider.GetRequiredService <IMapper>().MapToOperator(filterLambdaOperatorDescriptor);
Expression <Func <ResidencyModel, bool> > filter = (Expression <Func <ResidencyModel, bool> >)filterLambdaOperator.Build();
//assert
AssertFilterStringIsCorrect
(
filter,
"f => ((f.UserId == 3) AndAlso ((f.CitizenshipStatus == \"US\") AndAlso (f.ResidentState == \"OH\")))"
);
}
public void CanCreateSerachByIdAndFirstNameAndLastNameExpression()
{
//arrange
ItemFilterGroupDescriptor itemFilterGroupDescriptor = new ItemFilterGroupDescriptor
{
Filters = new List <ItemFilterDescriptorBase>
{
new MemberSourceFilterDescriptor
{
Field = "ID",
MemberSource = "ID",
Operator = "eq",
Type = "System.Int32"
},
new ItemFilterGroupDescriptor
{
Filters = new List <ItemFilterDescriptorBase>
{
new MemberSourceFilterDescriptor
{
Field = "FirstName",
MemberSource = "FirstName",
Operator = "eq",
Type = "System.String"
},
new MemberSourceFilterDescriptor
{
Field = "LastName",
MemberSource = "LastName",
Operator = "eq",
Type = "System.String"
}
},
Logic = "and"
}
},
Logic = "and"
};
//act
FilterLambdaOperatorParameters filterLambdaOperatorDescriptor = serviceProvider.GetRequiredService <IGetItemFilterBuilder>().CreateFilter
(
itemFilterGroupDescriptor,
typeof(InstructorModel),
inststructor
);
FilterLambdaOperator filterLambdaOperator = (FilterLambdaOperator)serviceProvider.GetRequiredService <IMapper>().MapToOperator(filterLambdaOperatorDescriptor);
Expression <Func <InstructorModel, bool> > filter = (Expression <Func <InstructorModel, bool> >)filterLambdaOperator.Build();
//assert
AssertFilterStringIsCorrect
(
filter,
"f => ((f.ID == 3) AndAlso ((f.FirstName == \"John\") AndAlso (f.LastName == \"Smith\")))"
);
}
private static IExpressionParameter CreateFilterGroupBody(ItemFilterGroupDescriptor descriptor, object entity)
{
if (descriptor?.Filters?.Any() != true)
{
throw new ArgumentException($"{nameof(descriptor.Filters)}: 165BB6D3-1D2F-4EEB-B546-102825505ED2");
}
if (descriptor.Filters.Count > 2)
{
throw new ArgumentException($"{nameof(descriptor.Filters)}: 1EAC3591-1BBE-412A-A915-C779E3463FB7");
}
if (descriptor.Filters.Count == 1)
{
return(CreateBody(descriptor.Filters.First()));
}
;
return(SetMembers
(
GetLogicBinaryOperatorDescriptor(descriptor.Logic)
));
IExpressionParameter SetMembers(BinaryOperatorParameters binaryOperator)
{
binaryOperator.Left = CreateBody(descriptor.Filters.First());
binaryOperator.Right = CreateBody(descriptor.Filters.Last());
return(binaryOperator);
}
IExpressionParameter CreateBody(ItemFilterDescriptorBase filterDescriptorBase)
{
return(filterDescriptorBase switch
{
ValueSourceFilterDescriptor valueSourceFilterDescriptor => CreateValueFilterBody(valueSourceFilterDescriptor),
MemberSourceFilterDescriptor memberSourceFilterDescriptor => CreateMemberSourceFilterBody(memberSourceFilterDescriptor, entity),
ItemFilterGroupDescriptor itemFilterGroupDescriptor => CreateFilterGroupBody(itemFilterGroupDescriptor, entity),
_ => throw new ArgumentException($"{nameof(filterDescriptorBase)}: 7EB79C70-91D4-4C9E-96AD-C5ABF1D8603A"),
});
}
public FilterLambdaOperatorParameters CreateFilter(ItemFilterGroupDescriptor descriptor, Type modelType, object entity) => CreateItemFilterHelper.CreateFilter(descriptor, modelType, entity);
