public static Expression <Func <T, bool> > CreateFilterExpression <T>(FilterDefinition filterdata)
{
if (filterdata == null)
{
return(null);
}
var metadata = FilterMetadataExtractor.ExtractMetadata <T>();
DoValidationProcess(filterdata, metadata);
var spec = CreateExpression <T>(filterdata, metadata);
return(spec.ToExpression());
}
public void Test_FilterMetadataExtractor()
{
var searchMetadata = FilterMetadataExtractor.ExtractMetadata <Person>();
Assert.IsNotNull(searchMetadata);
Assert.AreEqual(searchMetadata.TypeName, typeof(Person).FullName);
Assert.AreEqual(searchMetadata.Items.Count, 2);
Assert.AreEqual(searchMetadata.Items[0].FieldName, "Name");
Assert.AreEqual(searchMetadata.Items[0].Type, TypeCode.String);
Assert.AreEqual(searchMetadata.Items[0].Title, "Person name");
Assert.AreEqual(searchMetadata.Items[1].FieldName, "Birthdate");
Assert.AreEqual(searchMetadata.Items[1].Type, TypeCode.DateTime);
Assert.AreEqual(searchMetadata.Items[1].Title, "Birth date");
}
