protected override Expression VisitMethodCall(MethodCallExpression node)
{
if (node.Method.Name == "Select" &&
expansion.MemberType.GetUnderlyingElementType() == node.GetUnderlyingElementType() &&
this.expression.ToString().StartsWith(node.ToString())) //makes sure we're not updating some nested "Select"
{
FilterLambdaOperator filterOperator = mapper.Map <FilterLambdaOperator>
(
expansion.FilterOption.Filter,
opts => opts.Items[ExpressionOperators.PARAMETERS_KEY] = new Dictionary <string, ParameterExpression>()
);
return(node.GetWhereCall(filterOperator.Build()));
}
return(base.VisitMethodCall(node));
}
public void CanCreateSerachByFirstNameAndLastNameExpression()
{
//arrange
ItemFilterGroupDescriptor itemFilterGroupDescriptor = new ItemFilterGroupDescriptor
{
Filters = new List <ItemFilterDescriptorBase>
{
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"
}
}
};
//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.CitizenshipStatus == \"US\") AndAlso (f.ResidentState == \"OH\"))"
);
}
public void CanCreateFilterFromSearchFilterGroupDescriptor()
{
//act
FilterLambdaOperatorDescriptor filterLambdaOperatorDescriptor = serviceProvider.GetRequiredService <ISearchSelectorBuilder>().CreateFilter
(
searchFilterGroupDescriptor,
typeof(PersonalModel),
"xxx"
);
FilterLambdaOperator filterLambdaOperator = (FilterLambdaOperator)serviceProvider.GetRequiredService <IMapper>().MapToOperator(filterLambdaOperatorDescriptor);
Expression <Func <PersonalModel, bool> > filter = (Expression <Func <PersonalModel, bool> >)filterLambdaOperator.Build();
//assert
AssertFilterStringIsCorrect
(
filter,
"f => (f.MiddleName.Contains(\"xxx\") OrElse (f.FirstName.Contains(\"xxx\") OrElse f.LastName.Contains(\"xxx\")))"
);
}
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 CanCreateSerachByFirstNameAndLastNameExpression()
{
//arrange
ItemFilterGroupDescriptor itemFilterGroupDescriptor = new ItemFilterGroupDescriptor
{
Filters = new List <ItemFilterDescriptorBase>
{
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"
}
}
};
//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.FirstName == \"John\") AndAlso (f.LastName == \"Smith\"))"
);
}