[−][src]Module toql_core::query
This module contains the query and all functions to build one programatically.
Example
use toql::query::{Query, Field}; let q = Query::new() .and(Field::from("foo").hide().eq(5).aggregate().asc(1)) .and(Field::from("bar").desc(2)); assert_eq!("+1.foo !EQ 5,-2bar", q.to_string());
To avoid typing mistakes the Toql derive builds functions for all fields in a struct.
In the example above it would be possible to write
.and(Foobar::fields().bar().desc(2)
for a derived struct Foobar
.
Read the guide for more information on the query syntax.
Structs
Field | A Toql field can select, filter and order a database column or expression A field can be created from a field name and filtered, sorted with its methods. However the Toql derive creates fields structs for a derived struct, so instead of |
Query | A Query contains fields and wildcards. It can be turned into SQL using the SQL Builder. |
Wildcard | A wildcard is used to select all fields from top or from a path. |
Enums
FieldFilter | The filter operation on a field. You use this when creating a FieldHandler to provide custom functions through the Fn filter or implement a alternative mapping to SQL. |
Traits
FilterArg | A trait to convert a simple datatype into a filter argument. Used by builder functions. Not very interesting ;) |