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use std::collections::{BTreeMap, HashMap};
use crate::crud::CRUDTable;
/// Simplifies table construction by relying on the Default trait
///
/// step1: impl Default
/// #[crud_table]
/// #[derive(Clone, Debug, Default)]
/// BizActivity{
/// }
///
/// //step2: make struct
/// let activity = rbatis::make_table!(BizActivity{
/// id : "12312".to_string(),
/// delete_flag : 1,
/// name: None,
/// });
#[macro_export]
macro_rules! make_table {
($t:path{ $($key:ident:$value:expr$(,)?)+ }) => {
{
let mut temp_table_data = <$t>::default();
$(temp_table_data.$key = $value.into();)+
temp_table_data
}
}
}
/// take the target Vec member attribute Vec collection
/// vec_ref: a reference to vec, field_name: the field name of the structure
///
/// need impl Clone or #[derive(Clone, Debug)]
/// for example:
/// struct SysUserRole{
/// pub role_id:String
/// }
/// let user_roles: Vec<SysUserRole>;
/// let role_ids = make_table_field_vec!(&user_roles,role_id); // role_ids: Vec<String>
///
///
///
#[allow(unused_macros)]
#[macro_export]
macro_rules! make_table_field_vec {
($vec_ref:expr,$field_name:ident) => {{
let mut ids = vec![];
for item in $vec_ref {
match item.$field_name.as_ref() {
std::option::Option::Some(v) => {
ids.push(v.clone());
}
_ => {}
}
}
ids
}};
}
/// Gets the HashMap collection of member attributes of the target Vec
/// vec_ref: vec reference,field_name: the field name of the structure
///
/// need impl Clone or #[derive(Clone, Debug)]
/// for example:
/// struct SysUserRole{
/// pub role_id:String
/// }
/// let user_roles: Vec<SysUserRole>;
/// let role_ids = make_table_field_map!(&user_roles,role_id); // role_ids: HashMap<String,SysUserRole>
///
///
///
#[allow(unused_macros)]
#[macro_export]
macro_rules! make_table_field_map {
($vec_ref:expr,$field_name:ident) => {{
let mut ids = std::collections::HashMap::new();
for item in $vec_ref {
match item.$field_name.as_ref() {
std::option::Option::Some(v) => {
ids.insert(v.clone(), item.clone());
}
_ => {}
}
}
ids
}};
}
/// Gets the HashMap collection of member attributes of the target Vec
/// vec_ref: vec reference,field_name: the field name of the structure
///
/// need impl Clone or #[derive(Clone, Debug)]
/// for example:
/// struct SysUserRole{
/// pub role_id:String
/// }
/// let user_roles: Vec<SysUserRole>;
/// let role_ids = make_table_field_map_btree!(&user_roles,role_id); // role_ids: HashMap<String,SysUserRole>
///
///
///
#[allow(unused_macros)]
#[macro_export]
macro_rules! make_table_field_map_btree {
($vec_ref:expr,$field_name:ident) => {{
let mut ids = std::collections::BTreeMap::new();
for item in $vec_ref {
match item.$field_name.as_ref() {
std::option::Option::Some(v) => {
ids.insert(v.clone(), item.clone());
}
_ => {}
}
}
ids
}};
}
#[allow(unused_macros)]
#[macro_export]
macro_rules! as_bson {
($key:expr) => {
rbson::to_bson($key).unwrap_or_default()
}
}
/// Used to simulate enumerations to improve code maintainability.
/// this is return &str data
/// for example:
/// let name=field_name!(BizActivity.id);
/// rb.new_wrapper().eq(field_name!(BizActivity.id),"1")
///
#[allow(unused_macros)]
#[macro_export]
macro_rules! field_name {
($t:ident.$field:ident) => {
{
if false{|a:$t|{a.$field};}
stringify!($field).trim_start_matches("r#")
}
};
}
/// will create pub fn field_name()->&str method
/// for example:
/// #[crud_table]
/// #[derive(Clone, Debug)]
/// pub struct BizActivity {
/// pub id: Option<String>,
/// pub name: Option<String>,
/// pub delete_flag: Option<i32>,
/// }
/// impl_field_name_method!(BizActivity{id,name,delete_flag});
///
/// println!("{}",BizActivity::delete_flag());
#[allow(unused_macros)]
#[macro_export]
macro_rules! impl_field_name_method {
($target:path{$($field_name:ident$(,)?)+}) => {
impl $target{
$(
#[inline]
pub fn $field_name()->&'static str{
if false{
|a:$target|{a.$field_name};
}
stringify!($field_name).trim_start_matches("r#")
}
)+
}
};
}