public static bool Contains(
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(string) &&
type.IsInstanceOfType(value))
{
Expression property = GetProperty(operation, context);
result = FilterExpressionBuilder.Contains(property, parsedValue);
return(true);
}
else
{
throw new InvalidOperationException();
}
}
protected override bool TryCreateExpression(
FilterOperation operation,
MemberExpression property,
object parsedValue, out
Expression expression)
{
switch (operation.Kind)
{
case FilterOperationKind.Contains:
expression = FilterExpressionBuilder.Contains(
property, parsedValue);
return(true);
case FilterOperationKind.NotContains:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.Contains(
property, parsedValue)
);
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(string) && value is StringValueNode s)
{
MemberExpression property =
Expression.Property(instance, operation.Property);
switch (operation.Kind)
{
case FilterOperationKind.Equals:
expression = FilterExpressionBuilder.Equals(
property, s.Value);
return(true);
case FilterOperationKind.NotEquals:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.Equals(property, s.Value)
);
return(true);
case FilterOperationKind.StartsWith:
expression = FilterExpressionBuilder.StartsWith(
property, s.Value);
return(true);
case FilterOperationKind.EndsWith:
expression = FilterExpressionBuilder.EndsWith(
property, s.Value);
return(true);
case FilterOperationKind.NotStartsWith:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.StartsWith(
property, s.Value)
);
return(true);
case FilterOperationKind.NotEndsWith:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.EndsWith(property, s.Value)
);
return(true);
case FilterOperationKind.Contains:
expression = FilterExpressionBuilder.Contains(
property, s.Value);
return(true);
case FilterOperationKind.NotContains:
expression = FilterExpressionBuilder.Not(
FilterExpressionBuilder.Contains(property, s.Value)
);
return(true);
}
}
if (operation.Type == typeof(string) && 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);
}
