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use std::rc::Rc; use crate::{ColumnDef, backend::TableBuilder, foreign_key::*, types::*, prepare::*}; /// Create a table /// /// # Examples /// /// ``` /// use sea_query::{*, tests_cfg::*}; /// /// let table = Table::create() /// .table(Char::Table) /// .create_if_not_exists() /// .col(ColumnDef::new(Char::Id).integer().not_null().auto_increment().primary_key()) /// .col(ColumnDef::new(Char::FontSize).integer().not_null()) /// .col(ColumnDef::new(Char::Character).string().not_null()) /// .col(ColumnDef::new(Char::SizeW).integer().not_null()) /// .col(ColumnDef::new(Char::SizeH).integer().not_null()) /// .col(ColumnDef::new(Char::FontId).integer().default(Value::Null)) /// .foreign_key( /// ForeignKey::create() /// .name("FK_2e303c3a712662f1fc2a4d0aad6") /// .table(Char::Table, Font::Table) /// .col(Char::FontId, Font::Id) /// .on_delete(ForeignKeyAction::Cascade) /// .on_update(ForeignKeyAction::Cascade) /// ) /// .to_owned(); /// /// assert_eq!( /// table.to_string(MysqlQueryBuilder), /// vec![ /// r#"CREATE TABLE IF NOT EXISTS `character` ("#, /// r#"`id` int NOT NULL AUTO_INCREMENT PRIMARY KEY,"#, /// r#"`font_size` int NOT NULL,"#, /// r#"`character` varchar(255) NOT NULL,"#, /// r#"`size_w` int NOT NULL,"#, /// r#"`size_h` int NOT NULL,"#, /// r#"`font_id` int DEFAULT NULL,"#, /// r#"CONSTRAINT `FK_2e303c3a712662f1fc2a4d0aad6`"#, /// r#"FOREIGN KEY `FK_2e303c3a712662f1fc2a4d0aad6` (`font_id`) REFERENCES `font` (`id`)"#, /// r#"ON DELETE CASCADE ON UPDATE CASCADE"#, /// r#")"#, /// ].join(" ") /// ); /// assert_eq!( /// table.to_string(PostgresQueryBuilder), /// vec![ /// r#"CREATE TABLE IF NOT EXISTS "character" ("#, /// r#""id" serial NOT NULL PRIMARY KEY,"#, /// r#""font_size" integer NOT NULL,"#, /// r#""character" varchar NOT NULL,"#, /// r#""size_w" integer NOT NULL,"#, /// r#""size_h" integer NOT NULL,"#, /// r#""font_id" integer DEFAULT NULL,"#, /// r#"CONSTRAINT "FK_2e303c3a712662f1fc2a4d0aad6""#, /// r#"FOREIGN KEY ("font_id") REFERENCES "font" ("id")"#, /// r#"ON DELETE CASCADE ON UPDATE CASCADE"#, /// r#")"#, /// ].join(" ") /// ); /// assert_eq!( /// table.to_string(SqliteQueryBuilder), /// vec![ /// r#"CREATE TABLE IF NOT EXISTS `character` ("#, /// r#"`id` integer NOT NULL PRIMARY KEY AUTOINCREMENT,"#, /// r#"`font_size` integer NOT NULL,"#, /// r#"`character` text NOT NULL,"#, /// r#"`size_w` integer NOT NULL,"#, /// r#"`size_h` integer NOT NULL,"#, /// r#"`font_id` integer DEFAULT NULL,"#, /// r#"FOREIGN KEY (`font_id`) REFERENCES `font` (`id`) ON DELETE CASCADE ON UPDATE CASCADE"#, /// r#")"#, /// ].join(" ") /// ); /// ``` #[derive(Debug, Clone)] pub struct TableCreateStatement { pub(crate) table: Option<Rc<dyn Iden>>, pub(crate) columns: Vec<ColumnDef>, pub(crate) options: Vec<TableOpt>, pub(crate) partitions: Vec<TablePartition>, pub(crate) foreign_keys: Vec<ForeignKeyCreateStatement>, pub(crate) create_if_not_exists: bool, } /// All available table options #[derive(Debug, Clone)] pub enum TableOpt { Engine(String), Collate(String), CharacterSet(String), } /// All available table partition options #[derive(Debug, Clone)] pub enum TablePartition { } impl Default for TableCreateStatement { fn default() -> Self { Self::new() } } impl TableCreateStatement { /// Construct create table statement pub fn new() -> Self { Self { table: None, columns: Vec::new(), options: Vec::new(), partitions: Vec::new(), foreign_keys: Vec::new(), create_if_not_exists: false, } } /// Create table if table not exists pub fn create_if_not_exists(&mut self) -> &mut Self { self.create_if_not_exists = true; self } /// Set table name pub fn table<T: 'static>(&mut self, table: T) -> &mut Self where T: Iden { self.table = Some(Rc::new(table)); self } /// Add a new table column pub fn col(&mut self, column: ColumnDef) -> &mut Self { let mut column = column; column.table = self.table.clone(); self.columns.push(column); self } /// Add a foreign key pub fn foreign_key(&mut self, foreign_key: ForeignKeyCreateStatement) -> &mut Self { let mut foreign_key = foreign_key; foreign_key.inside_table_creation = true; self.foreign_keys.push(foreign_key); self } /// Set database engine (for MySQL only) pub fn engine(&mut self, string: &str) -> &mut Self { self.opt(TableOpt::Engine(string.into())); self } /// Set database collate (for MySQL only) pub fn collate(&mut self, string: &str) -> &mut Self { self.opt(TableOpt::Collate(string.into())); self } /// Set database character set (for MySQL only) pub fn character_set(&mut self, string: &str) -> &mut Self { self.opt(TableOpt::CharacterSet(string.into())); self } fn opt(&mut self, option: TableOpt) -> &mut Self { self.options.push(option); self } #[allow(dead_code)] fn partition(&mut self, partition: TablePartition) -> &mut Self { self.partitions.push(partition); self } /// Build corresponding SQL statement for certain database backend and return SQL string pub fn build<T: TableBuilder>(&self, table_builder: T) -> String { let mut sql = SqlWriter::new(); table_builder.prepare_table_create_statement(self, &mut sql); sql.result() } /// Build corresponding SQL statement for certain database backend and return SQL string pub fn build_any(&self, table_builder: &dyn TableBuilder) -> String { let mut sql = SqlWriter::new(); table_builder.prepare_table_create_statement(self, &mut sql); sql.result() } /// Build corresponding SQL statement for certain database backend and return SQL string pub fn to_string<T: TableBuilder>(&self, table_builder: T) -> String { self.build(table_builder) } }