protected override bool TryCreateExpression(
FilterOperation operation,
MemberExpression property,
object parsedValue,
out Expression expression)
{
switch (operation.Kind)
{
case FilterOperationKind.GreaterThanOrEquals:
expression = FilterExpressionBuilder.GreaterThanOrEqual(
property, parsedValue);
return(true);
case FilterOperationKind.NotGreaterThanOrEquals:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.GreaterThanOrEqual(
property, parsedValue)
);
return(true);
default:
expression = null;
return(false);
}
}
public static bool GreaterThanOrEquals(
FilterOperation operation,
IInputType type,
IValueNode value,
IQueryableFilterVisitorContext context,
[NotNullWhen(true)] out Expression?result)
{
object parsedValue = type.ParseLiteral(value);
if (parsedValue == null)
{
context.ReportError(
ErrorHelper.CreateNonNullError(operation, type, value, context));
result = null;
return(false);
}
if (operation.Type == typeof(IComparable) &&
type.IsInstanceOfType(value))
{
Expression property = GetProperty(operation, context);
parsedValue = ParseValue(parsedValue, operation, type, context);
result = FilterExpressionBuilder.GreaterThanOrEqual(property, parsedValue);
return(true);
}
else
{
throw new InvalidOperationException();
}
}
protected override bool TryCreateExpression(
FilterOperation operation,
Expression property,
Func <object> parseValue,
[NotNullWhen(true)] out Expression?expression)
{
switch (operation.Kind)
{
case FilterOperationKind.GreaterThanOrEquals:
expression = FilterExpressionBuilder.GreaterThanOrEqual(
property, parseValue());
return(true);
case FilterOperationKind.NotGreaterThanOrEquals:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.GreaterThanOrEqual(
property, parseValue()));
return(true);
default:
expression = null;
return(false);
}
}
public bool TryHandle(
FilterOperation operation,
IInputType type,
IValueNode value,
Expression instance,
ITypeConversion converter,
out Expression expression)
{
if (operation.Type == typeof(IComparable) &&
value is IValueNode <IComparable> s)
{
MemberExpression property =
Expression.Property(instance, operation.Property);
var parsedValue = type.ParseLiteral(value);
if (operation.Property.PropertyType
.IsInstanceOfType(parsedValue))
{
parsedValue = converter.Convert(
typeof(object),
operation.Property.PropertyType,
parsedValue);
}
switch (operation.Kind)
{
case FilterOperationKind.Equals:
expression = FilterExpressionBuilder.Equals(
property, parsedValue);
return(true);
case FilterOperationKind.NotEquals:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.Equals(
property, parsedValue)
);
return(true);
case FilterOperationKind.GreaterThan:
expression = FilterExpressionBuilder.GreaterThan(
property, parsedValue);
return(true);
case FilterOperationKind.NotGreaterThan:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.GreaterThan(
property, parsedValue)
);
return(true);
case FilterOperationKind.GreaterThanOrEqual:
expression = FilterExpressionBuilder.GreaterThanOrEqual(
property, parsedValue);
return(true);
case FilterOperationKind.NotGreaterThanOrEqual:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.GreaterThanOrEqual(
property, parsedValue)
);
return(true);
case FilterOperationKind.LowerThan:
expression = FilterExpressionBuilder.LowerThan(
property, parsedValue);
return(true);
case FilterOperationKind.NotLowerThan:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.LowerThan(
property, parsedValue));
return(true);
case FilterOperationKind.LowerThanOrEqual:
expression = FilterExpressionBuilder.LowerThanOrEqual(
property, parsedValue);
return(true);
case FilterOperationKind.NotLowerThanOrEqual:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.LowerThanOrEqual(
property, parsedValue));
return(true);
}
}
if (operation.Type == typeof(IComparable) && value is ListValueNode li)
{
MemberExpression property =
Expression.Property(instance, operation.Property);
var parsedValue = type.ParseLiteral(value);
switch (operation.Kind)
{
case FilterOperationKind.In:
expression = FilterExpressionBuilder.In(
property,
operation.Property.PropertyType,
parsedValue);
return(true);
case FilterOperationKind.NotIn:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.In(
property,
operation.Property.PropertyType,
parsedValue)
);
return(true);
}
}
expression = null;
return(false);
}