public async Task InvokeAsync(IMiddlewareContext context)
{
await _next(context).ConfigureAwait(false);
IValueNode filter = context.ArgumentLiteral <IValueNode>(_contextData.ArgumentName);
if (filter is NullValueNode)
{
return;
}
IQueryable <T>?source = null;
if (context.Result is IQueryable <T> q)
{
source = q;
}
else if (context.Result is IEnumerable <T> e)
{
source = e.AsQueryable();
}
if (source is not null &&
context.Field.Arguments[_contextData.ArgumentName].Type is InputObjectType iot &&
iot is IFilterInputType fit)
{
var visitorContext = new QueryableFilterVisitorContext(
iot, fit.EntityType, _converter, source is EnumerableQuery);
QueryableFilterVisitor.Default.Visit(filter, visitorContext);
source = source.Where(visitorContext.CreateFilter <T>());
context.Result = source;
}
}
public void Create_StringNotEqual_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("bar_not",
new StringValueNode("a")));
FooFilterType fooType = CreateType(new FooFilterType());
// act
var filterContext = new QueryableFilterVisitorContext(
fooType,
typeof(Foo),
DefaultTypeConverter.Default,
true);
QueryableFilterVisitor.Default.Visit(value, filterContext);
Func <Foo, bool> func = filterContext.CreateFilter <Foo>().Compile();
// assert
var a = new Foo {
Bar = "a"
};
Assert.False(func(a));
var b = new Foo {
Bar = "b"
};
Assert.True(func(b));
}
public void Create_ShortGreaterThan_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("barShort_gt",
new IntValueNode(12)));
FooFilterType fooType = CreateType(new FooFilterType());
// act
var context = new QueryableFilterVisitorContext(
fooType, typeof(Foo), TypeConversion.Default, true);
QueryableFilterVisitor.Default.Visit(value, context);
Func <Foo, bool> func = context.CreateFilter <Foo>().Compile();
// assert
var a = new Foo {
BarShort = 11
};
Assert.False(func(a));
var b = new Foo {
BarShort = 12
};
Assert.False(func(b));
var c = new Foo {
BarShort = 13
};
Assert.True(func(c));
}
public void Create_BooleanEqual_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode(
"bar",
new BooleanValueNode(true)));
FooFilterType fooType = CreateType(new FooFilterType());
// act
var filter = new QueryableFilterVisitorContext(
fooType,
typeof(Foo),
DefaultTypeConverter.Default,
true);
QueryableFilterVisitor.Default.Visit(value, filter);
Func <Foo, bool> func = filter.CreateFilter <Foo>().Compile();
// assert
var a = new Foo {
Bar = true
};
Assert.True(func(a));
var b = new Foo {
Bar = false
};
Assert.False(func(b));
}
public void Create_ArraySomeObjectStringEqualWithNull_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("fooNested_some",
new ObjectValueNode(
new ObjectFieldNode("bar",
new StringValueNode("a")
)
)
)
);
FooFilterType fooType = CreateType(new FooFilterType());
// act
var filter = new QueryableFilterVisitorContext(
fooType,
typeof(Foo),
DefaultTypeConverter.Default,
true);
QueryableFilterVisitor.Default.Visit(value, filter);
Func <Foo, bool> func = filter.CreateFilter <Foo>().Compile();
// assert
var a = new Foo
{
FooNested = new[]
{
new FooNested {
Bar = "c"
},
null,
new FooNested {
Bar = "a"
}
}
};
Assert.True(func(a));
var b = new Foo
{
FooNested = new[]
{
new FooNested {
Bar = "c"
},
null,
new FooNested {
Bar = "b"
}
}
};
Assert.False(func(b));
}
public void Create_ArrayAnyObjectStringEqual_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("fooNested_any",
new BooleanValueNode(true)
)
);
FooFilterType fooType = CreateType(new FooFilterType());
// act
var filter = new QueryableFilterVisitorContext(
fooType,
typeof(Foo),
DefaultTypeConverter.Default,
true);
QueryableFilterVisitor.Default.Visit(value, filter);
Func <Foo, bool> func = filter.CreateFilter <Foo>().Compile();
// assert
var a = new Foo
{
FooNested = new[]
{
new FooNested {
Bar = "c"
},
new FooNested {
Bar = "d"
},
new FooNested {
Bar = "a"
}
}
};
Assert.True(func(a));
var b = new Foo {
FooNested = new FooNested[] { }
};
Assert.False(func(b));
var c = new Foo {
FooNested = null
};
Assert.False(func(c));
var d = new Foo {
FooNested = new FooNested[] { null }
};
Assert.True(func(d));
}
public void Create_ObjectStringEqualDeep_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("foo",
new ObjectValueNode(
new ObjectFieldNode("fooNested",
new ObjectValueNode(
new ObjectFieldNode("bar",
new StringValueNode("a")
)
)
)
)
)
);
EvenDeeperFilterType fooType = CreateType(new EvenDeeperFilterType());
// act
var filterContext = new QueryableFilterVisitorContext(
fooType,
typeof(EvenDeeper),
DefaultTypeConverter.Default,
true);
QueryableFilterVisitor.Default.Visit(value, filterContext);
Func <EvenDeeper, bool> func = filterContext.CreateFilter <EvenDeeper>().Compile();
// assert
var a = new EvenDeeper {
Foo = new Foo {
FooNested = new FooNested {
Bar = "a"
}
}
};
Assert.True(func(a));
var b = new EvenDeeper {
Foo = new Foo {
FooNested = new FooNested {
Bar = "b"
}
}
};
Assert.False(func(b));
}
public void Create_ObjectStringEqualRecursive_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("nested",
new ObjectValueNode(
new ObjectFieldNode("nested",
new ObjectValueNode(
new ObjectFieldNode("bar",
new StringValueNode("a")
)
)
)
)
)
);
FilterInputType <Recursive> fooType = CreateType(new FilterInputType <Recursive>());
// act
var filterContext = new QueryableFilterVisitorContext(
fooType,
typeof(Recursive),
DefaultTypeConverter.Default,
true);
QueryableFilterVisitor.Default.Visit(value, filterContext);
Func <Recursive, bool> func = filterContext.CreateFilter <Recursive>().Compile();
var a = new Recursive {
Nested = new Recursive {
Nested = new Recursive {
Bar = "a"
}
}
};
Assert.True(func(a));
var b = new Recursive {
Nested = new Recursive {
Nested = new Recursive {
Bar = "b"
}
}
};
Assert.False(func(b));
}
public void Create_NullableShortNotLowerThanOrEquals_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode(
"barShort_not_lte",
new IntValueNode(12)));
FooNullableFilterType fooNullableType = CreateType(new FooNullableFilterType());
// act
var context = new QueryableFilterVisitorContext(
fooNullableType,
typeof(FooNullable),
DefaultTypeConverter.Default,
true);
QueryableFilterVisitor.Default.Visit(value, context);
Func <FooNullable, bool> func = context.CreateFilter <FooNullable>().Compile();
// assert
var a = new FooNullable {
BarShort = 11
};
Assert.False(func(a));
var b = new FooNullable {
BarShort = 12
};
Assert.False(func(b));
var c = new FooNullable {
BarShort = 13
};
Assert.True(func(c));
var d = new FooNullable {
BarShort = null
};
Assert.True(func(d));
}
public void Create_ArraySomeStringEqualWithNull_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("bar_some",
new ObjectValueNode(
new ObjectFieldNode("element",
new StringValueNode("a")
)
)
)
);
FooSimpleFilterType fooType = CreateType(new FooSimpleFilterType());
// act
var filter = new QueryableFilterVisitorContext(
fooType,
typeof(FooSimple),
DefaultTypeConverter.Default,
true);
QueryableFilterVisitor.Default.Visit(value, filter);
Func <FooSimple, bool> func = filter.CreateFilter <FooSimple>().Compile();
// assert
var a = new FooSimple {
Bar = new[] { "c", null, "a" }
};
Assert.True(func(a));
var b = new FooSimple {
Bar = new[] { "c", null, "b" }
};
Assert.False(func(b));
var c = new FooSimple {
Bar = null
};
Assert.False(func(c));
}
public void Create_NullableShortIn_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("barShort_in",
new ListValueNode(new[]
{
new IntValueNode(13),
new IntValueNode(14)
}))
);
FooNullableFilterType fooNullableType = CreateType(new FooNullableFilterType());
// act
var context = new QueryableFilterVisitorContext(
fooNullableType, typeof(FooNullable), TypeConversion.Default, true);
QueryableFilterVisitor.Default.Visit(value, context);
Func <FooNullable, bool> func = context.CreateFilter <FooNullable>().Compile();
// assert
var a = new FooNullable {
BarShort = 13
};
Assert.True(func(a));
var b = new FooNullable {
BarShort = 12
};
Assert.False(func(b));
var c = new FooNullable {
BarShort = null
};
Assert.False(func(c));
}
public void Create_ArrayAnyStringEqual_Expression()
{
// arrange
var value = new ObjectValueNode(
new ObjectFieldNode("bar_any",
new BooleanValueNode(true)
)
);
FooSimpleFilterType fooType = CreateType(new FooSimpleFilterType());
// act
var filter = new QueryableFilterVisitorContext(
fooType,
typeof(FooSimple),
TypeConversion.Default,
true);
QueryableFilterVisitor.Default.Visit(value, filter);
Func <FooSimple, bool> func = filter.CreateFilter <FooSimple>().Compile();
// assert
var a = new FooSimple {
Bar = new[] { "c", "d", "a" }
};
Assert.True(func(a));
var b = new FooSimple {
Bar = new string[0]
};
Assert.False(func(b));
var c = new FooSimple {
Bar = null
};
Assert.False(func(c));
}