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mod and_filter;
mod or_filter;
pub(crate) use and_filter::AndFilter;
pub(crate) use or_filter::OrFilter;
use crate::{statements::ArelStatement, Arel};
use std::{fmt::Debug, marker::PhantomData, ops::Deref};
trait ArelSubFilterStatement: Debug {
fn sqls(&self) -> &Vec<crate::Sql>;
fn sqls_mut(&mut self) -> &mut Vec<crate::Sql>;
fn join_str(&self) -> &'static str;
fn to_sql(&self) -> crate::Result<Option<crate::Sql>> {
let mut final_sql = crate::Sql::default();
let len = self.sqls().len();
if len > 0 {
for (idx, sql) in self.sqls().iter().enumerate() {
final_sql.push_sql(sql.clone());
if idx < len - 1 {
final_sql.push_str(self.join_str());
}
}
}
Ok(Some(final_sql))
}
}
#[derive(Debug)]
pub struct Filter<M: crate::Arel> {
sub_filters: Vec<Box<dyn ArelSubFilterStatement + Send + 'static>>,
_marker: PhantomData<M>,
}
impl<M: crate::Arel> Default for Filter<M> {
fn default() -> Self {
Self {
sub_filters: vec![],
_marker: PhantomData,
}
}
}
impl<M: crate::Arel> ArelStatement for Filter<M> {
fn to_sql(&self) -> crate::Result<Option<crate::Sql>> {
let sub_filters: Vec<&Box<dyn ArelSubFilterStatement + Send + 'static>> = self.sub_filters.iter().collect();
if self.sub_filters.len() > 0 {
let mut final_sql = crate::Sql::new("");
for (idx, sub_filter) in sub_filters.into_iter().enumerate() {
let sql = sub_filter.to_sql()?;
if let Some(sql) = sql {
if idx >= 1 {
final_sql.push_str(sub_filter.join_str());
}
if sub_filter.join_str() == " OR " && sub_filter.sqls().len() > 1 {
final_sql.push_str("(").push_sql(sql).push_str(")");
} else {
final_sql.push_sql(sql);
}
}
}
Ok(Some(final_sql))
} else {
Ok(None)
}
}
}
impl<M: Arel> Filter<M> {
/// # Examples
///
/// ```
/// use arel::prelude::*;
/// use arel::statements::filter::Filter;
/// #[arel]
/// struct User {}
/// impl Arel for User {}
/// let mut filter = Filter::<User>::default();
/// filter.and_filter("username", "sanmu");
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" = ?"#);
///
/// filter.and_filter("age", vec![18, 20]);
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" = ? AND "user"."age" IN (?, ?)"#);
///
/// ```
pub fn and_filter<K: AsRef<str>, V: Into<crate::Value>>(&mut self, key: K, value: V) -> &mut Self {
self.and_filter_pairs(vec![(key, value)])
}
/// # Examples
///
/// ```
/// use arel::prelude::*;
/// use arel::statements::filter::Filter;
/// #[arel]
/// struct User {}
/// impl Arel for User {}
/// let mut filter = Filter::<User>::default();
/// filter.and_filter_pairs(vec![("username", Into::<arel::Value>::into("sanmu")), ("age", Into::<arel::Value>::into(vec![18, 20]))]);
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" = ? AND "user"."age" IN (?, ?)"#);
///
/// filter.and_filter("gender", "male");
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" = ? AND "user"."age" IN (?, ?) AND "user"."gender" = ?"#);
///
/// ```
pub fn and_filter_pairs<K: AsRef<str>, V: Into<crate::Value>>(&mut self, pairs: Vec<(K, V)>) -> &mut Self {
let table_name = M::table_name();
let mut and_filter = AndFilter::default();
for (key, value) in pairs.into_iter() {
let mut sql = crate::Sql::default();
let value: crate::Value = value.into();
sql.push_str(format!(r#""{}"."{}""#, table_name, key.as_ref()));
match &value {
crate::Value::Array(arrary) => match arrary.deref() {
Some(arr) => {
sql.push_str(" IN (").push_binds(arr.clone(), ", ").push_str(")");
}
None => {
sql.push_str(" IS NULL");
}
},
_ => {
if !value.is_null() {
sql.push_str(" = ").push_bind(value);
} else {
sql.push_str(" IS NULL");
}
}
}
and_filter.sqls.push(sql);
}
self.sub_filters.push(Box::new(and_filter));
self
}
pub fn and_filter_sql<S: Into<crate::Sql>>(&mut self, sql: S) -> &mut Self {
let mut and_filter = AndFilter::default();
and_filter.sqls.push(sql.into());
self.sub_filters.push(Box::new(and_filter));
self
}
/// # Examples
///
/// ```
/// use arel::prelude::*;
/// use arel::statements::filter::Filter;
/// #[arel]
/// struct User {}
/// impl Arel for User {}
/// let mut filter = Filter::<User>::default();
/// filter.and_not_filter("username", "sanmu");
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" != ?"#);
///
/// filter.and_not_filter("aga", vec![18, 20]);
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" != ? AND "user"."aga" NOT IN (?, ?)"#);
///
/// ```
pub fn and_not_filter<K: AsRef<str>, V: Into<crate::Value>>(&mut self, key: K, value: V) -> &mut Self {
self.and_not_filter_pairs(vec![(key, value)])
}
pub fn and_not_filter_pairs<K: AsRef<str>, V: Into<crate::Value>>(&mut self, pairs: Vec<(K, V)>) -> &mut Self {
let table_name = M::table_name();
let mut and_filter = AndFilter::default();
for (key, value) in pairs.into_iter() {
let mut sql = crate::Sql::default();
let value: crate::Value = value.into();
sql.push_str(format!(r#""{}"."{}""#, table_name, key.as_ref()));
match &value {
crate::Value::Array(arrary) => match arrary.deref() {
Some(arr) => {
sql.push_str(" NOT IN (").push_binds(arr.clone(), ", ").push_str(")");
}
None => {
sql.push_str(" IS NOT NULL");
}
},
_ => {
if !value.is_null() {
sql.push_str(" != ").push_bind(value);
} else {
sql.push_str(" IS NOT NULL");
}
}
}
and_filter.sqls.push(sql);
}
self.sub_filters.push(Box::new(and_filter));
self
}
/// # Examples
///
/// ```
/// use arel::prelude::*;
/// use arel::statements::filter::Filter;
/// #[arel]
/// struct User {}
/// impl Arel for User {}
/// let mut filter = Filter::<User>::default();
/// filter.or_filter("username", "sanmu");
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" = ?"#);
///
/// filter.or_filter("age", vec![18, 20]);
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" = ? OR "user"."age" IN (?, ?)"#);
///
/// filter.and_filter("gender", "male");
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" = ? OR "user"."age" IN (?, ?) AND "user"."gender" = ?"#);
///
/// ```
pub fn or_filter<K: AsRef<str>, V: Into<crate::Value>>(&mut self, key: K, value: V) -> &mut Self {
self.or_filter_pairs(vec![(key, value)])
}
/// # Examples
///
/// ```
/// use arel::prelude::*;
/// use arel::statements::filter::Filter;
/// #[arel]
/// struct User {}
/// impl Arel for User {}
/// let mut filter = Filter::<User>::default();
/// filter.or_filter_pairs(vec![("username", Into::<arel::Value>::into("sanmu")), ("age", Into::<arel::Value>::into(vec![18, 20]))]);
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#"("user"."username" = ? OR "user"."age" IN (?, ?))"#);
///
/// filter.or_filter("gender", "male");
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#"("user"."username" = ? OR "user"."age" IN (?, ?)) OR "user"."gender" = ?"#);
///
/// ```
pub fn or_filter_pairs<K: AsRef<str>, V: Into<crate::Value>>(&mut self, pairs: Vec<(K, V)>) -> &mut Self {
let table_name = M::table_name();
let mut or_filter = OrFilter::default();
for (key, value) in pairs.into_iter() {
let mut sql = crate::Sql::default();
let value: crate::Value = value.into();
sql.push_str(format!(r#""{}"."{}""#, table_name, key.as_ref()));
match &value {
crate::Value::Array(arrary) => match arrary.deref() {
Some(arr) => {
sql.push_str(" IN (").push_binds(arr.clone(), ", ").push_str(")");
}
None => {
sql.push_str(" IS NULL");
}
},
_ => {
if !value.is_null() {
sql.push_str(" = ").push_bind(value);
} else {
sql.push_str(" IS NULL");
}
}
}
or_filter.sqls.push(sql);
}
self.sub_filters.push(Box::new(or_filter));
self
}
pub fn or_filter_sql<S: Into<crate::Sql>>(&mut self, sql: S) -> &mut Self {
let mut or_filter = OrFilter::default();
or_filter.sqls.push(sql.into());
self.sub_filters.push(Box::new(or_filter));
self
}
/// # Examples
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// ```
/// use arel::prelude::*;
/// use arel::statements::filter::Filter;
/// #[arel]
/// struct User {}
/// impl Arel for User {}
/// let mut filter = Filter::<User>::default();
/// filter.or_not_filter("username", "sanmu");
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" != ?"#);
///
/// filter.or_not_filter("aga", vec![18, 20]);
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" != ? OR "user"."aga" NOT IN (?, ?)"#);
///
/// ```
pub fn or_not_filter<K: AsRef<str>, V: Into<crate::Value>>(&mut self, key: K, value: V) -> &mut Self {
self.or_not_filter_pairs(vec![(key, value)])
}
pub fn or_not_filter_pairs<K: AsRef<str>, V: Into<crate::Value>>(&mut self, pairs: Vec<(K, V)>) -> &mut Self {
let table_name = M::table_name();
let mut or_filter = OrFilter::default();
for (key, value) in pairs.into_iter() {
let mut sql = crate::Sql::default();
let value: crate::Value = value.into();
sql.push_str(format!(r#""{}"."{}""#, table_name, key.as_ref()));
match &value {
crate::Value::Array(arrary) => match arrary.deref() {
Some(arr) => {
sql.push_str(" NOT IN (").push_binds(arr.clone(), ", ").push_str(")");
}
None => {
sql.push_str(" IS NOT NULL");
}
},
_ => {
if !value.is_null() {
sql.push_str(" != ").push_bind(value);
} else {
sql.push_str(" IS NOT NULL");
}
}
}
or_filter.sqls.push(sql);
}
self.sub_filters.push(Box::new(or_filter));
self
}
pub fn unfilter_starts_with<K: AsRef<str>>(&mut self, start: K) -> &mut Self {
for sub_filter in self.sub_filters.iter_mut() {
sub_filter.sqls_mut().retain(|sql| !sql.raw_value.starts_with(start.as_ref()));
}
self
}
/// # Examples
///
/// ```
/// use arel::prelude::*;
/// use arel::statements::filter::Filter;
/// #[arel]
/// struct User {}
/// impl Arel for User {}
/// let mut filter = Filter::<User>::default();
/// filter.and_filter_pairs(vec![("username", Into::<arel::Value>::into("sanmu")), ("age", Into::<arel::Value>::into(vec![18, 20]))]);
/// filter.unfilter("age");
/// #[cfg(any(feature = "sqlite", feature = "mysql"))]
/// assert_eq!(filter.to_sql().unwrap().unwrap().to_sql_string().unwrap(), r#""user"."username" = ?"#);
///
/// ```
pub fn unfilter<K: ToString>(&mut self, key: K) -> &mut Self {
let table_name = M::table_name();
let start_string = format!(r#""{}"."{}""#, table_name, key.to_string());
self.unfilter_starts_with(start_string)
}
}