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use std::fmt::Write;
use rorm_declaration::imr::DefaultValue;
#[cfg(feature = "postgres")]
use crate::create_trigger::trigger_annotation_to_trigger_postgres;
#[cfg(feature = "sqlite")]
use crate::create_trigger::trigger_annotation_to_trigger_sqlite;
#[cfg(feature = "postgres")]
use crate::db_specific::postgres;
#[cfg(feature = "sqlite")]
use crate::db_specific::sqlite;
use crate::error::Error;
use crate::{Annotation, DbType, Value};
/**
Trait representing the create table builder.
*/
pub trait CreateColumn<'post_build>: Sized {
/**
Builds the column based on the data.
**Parameter**:
- `s`: mutable reference to a String to write the operation to
*/
fn build(self, s: &mut String) -> Result<(), Error>;
}
/**
Representation of an annotation
*/
#[derive(Debug)]
pub struct SQLAnnotation<'post_build> {
pub(crate) annotation: &'post_build Annotation,
}
/**
Representation of the data of the creation of a column for the sqlite dialect
*/
#[derive(Debug)]
#[cfg(feature = "sqlite")]
pub struct CreateColumnSQLiteData<'until_build, 'post_build> {
pub(crate) name: &'until_build str,
pub(crate) table_name: &'until_build str,
pub(crate) data_type: DbType,
pub(crate) annotations: Vec<SQLAnnotation<'post_build>>,
pub(crate) statements: Option<&'until_build mut Vec<(String, Vec<Value<'post_build>>)>>,
pub(crate) lookup: Option<&'until_build mut Vec<Value<'post_build>>>,
}
/**
Representation of the data of the creation of a column for the mysql dialect
*/
#[derive(Debug)]
#[cfg(feature = "postgres")]
pub struct CreateColumnPostgresData<'until_build, 'post_build> {
pub(crate) name: &'until_build str,
pub(crate) table_name: &'until_build str,
pub(crate) data_type: DbType,
pub(crate) annotations: Vec<SQLAnnotation<'post_build>>,
pub(crate) pre_statements: Option<&'until_build mut Vec<(String, Vec<Value<'post_build>>)>>,
pub(crate) statements: Option<&'until_build mut Vec<(String, Vec<Value<'post_build>>)>>,
}
/**
Representation of the different implementations of the [CreateColumn] trait.
Should only be constructed via [crate::DBImpl::create_column].
*/
#[derive(Debug)]
pub enum CreateColumnImpl<'until_build, 'post_build> {
/**
SQLite representation of the create column operation.
*/
#[cfg(feature = "sqlite")]
SQLite(CreateColumnSQLiteData<'until_build, 'post_build>),
/**
Postgres representation of the create column operation.
*/
#[cfg(feature = "postgres")]
Postgres(CreateColumnPostgresData<'until_build, 'post_build>),
}
impl<'post_build> CreateColumn<'post_build> for CreateColumnImpl<'_, 'post_build> {
fn build(self, s: &mut String) -> Result<(), Error> {
match self {
#[cfg(feature = "sqlite")]
CreateColumnImpl::SQLite(mut d) => {
write!(
s,
"\"{}\" {} ",
d.name,
match d.data_type {
DbType::Binary | DbType::Uuid => "BLOB",
DbType::VarChar
| DbType::Date
| DbType::DateTime
| DbType::Timestamp
| DbType::Time
| DbType::Choices => "TEXT",
DbType::Int8
| DbType::Int16
| DbType::Int32
| DbType::Int64
| DbType::Boolean => "INTEGER",
DbType::Float | DbType::Double => "REAL",
DbType::BitVec | DbType::MacAddress | DbType::IpNetwork => unreachable!(
"BitVec, MacAddress and IpNetwork are not available for sqlite"
),
}
)
.unwrap();
for (idx, x) in d.annotations.iter().enumerate() {
if let Some(ref mut s) = d.statements {
trigger_annotation_to_trigger_sqlite(
x.annotation,
&d.data_type,
d.table_name,
d.name,
s,
);
}
match &x.annotation {
Annotation::AutoIncrement => write!(s, "AUTOINCREMENT").unwrap(),
Annotation::AutoCreateTime => {
write!(
s,
"DEFAULT {}",
match d.data_type {
DbType::Date => "CURRENT_DATE",
DbType::DateTime => "CURRENT_TIMESTAMP",
DbType::Timestamp => "CURRENT_TIMESTAMP",
DbType::Time => "CURRENT_TIME",
_ => "",
}
)
.unwrap();
}
Annotation::DefaultValue(d) => match d {
DefaultValue::String(dv) => {
write!(s, "DEFAULT {}", sqlite::fmt(dv)).unwrap()
}
DefaultValue::Integer(i) => write!(s, "DEFAULT {i}").unwrap(),
DefaultValue::Float(f) => write!(s, "DEFAULT {f}").unwrap(),
DefaultValue::Boolean(b) => {
if *b {
write!(s, "DEFAULT 1").unwrap();
} else {
write!(s, "DEFAULT 0").unwrap();
}
}
},
Annotation::NotNull => write!(s, "NOT NULL").unwrap(),
Annotation::PrimaryKey => write!(s, "PRIMARY KEY").unwrap(),
Annotation::Unique => write!(s, "UNIQUE").unwrap(),
Annotation::ForeignKey(fk) => write!(
s,
"REFERENCES \"{}\" (\"{}\") ON DELETE {} ON UPDATE {}",
fk.table_name, fk.column_name, fk.on_delete, fk.on_update
)
.unwrap(),
_ => {}
}
if idx != d.annotations.len() - 1 {
write!(s, " ").unwrap();
}
}
Ok(())
}
#[cfg(feature = "postgres")]
CreateColumnImpl::Postgres(mut d) => {
write!(s, "\"{}\" ", d.name).unwrap();
match d.data_type {
DbType::VarChar => {
let max_length = d
.annotations
.iter()
.find_map(|x| match x.annotation {
Annotation::MaxLength(x) => Some(*x),
_ => None,
})
.ok_or_else(|| {
Error::SQLBuildError(
"character varying must have a max_length annotation"
.to_string(),
)
})?;
write!(s, "character varying ({max_length}) ").unwrap();
}
DbType::Choices => {
let a_opt = d
.annotations
.iter()
.find(|x| matches!(x.annotation, Annotation::Choices(_)));
if let Some(a) = a_opt {
if let Annotation::Choices(values) = a.annotation {
if let Some(stmts) = d.pre_statements {
stmts.push((
format!(
"CREATE TYPE _{}_{} AS ENUM({});",
d.table_name,
d.name,
values
.iter()
.map(|x| { postgres::fmt(x) })
.collect::<Vec<String>>()
.join(", ")
),
vec![],
));
};
write!(s, "_{}_{} ", d.table_name, d.name,).unwrap();
} else {
return Err(Error::SQLBuildError(
"VARCHAR must have a MaxLength annotation".to_string(),
));
}
} else {
return Err(Error::SQLBuildError(
"VARCHAR must have a MaxLength annotation".to_string(),
));
}
}
DbType::Uuid => write!(s, "uuid ").unwrap(),
DbType::MacAddress => write!(s, "macaddr ").unwrap(),
DbType::IpNetwork => write!(s, "inet ").unwrap(),
DbType::BitVec => write!(s, "varbit ").unwrap(),
DbType::Binary => write!(s, "bytea ").unwrap(),
DbType::Int8 => write!(s, "smallint ").unwrap(),
DbType::Int16 => {
if d.annotations
.iter()
.any(|x| matches!(x.annotation, Annotation::AutoIncrement))
{
write!(s, "smallserial ").unwrap();
} else {
write!(s, "smallint ").unwrap();
}
}
DbType::Int32 => {
if d.annotations
.iter()
.any(|x| matches!(x.annotation, Annotation::AutoIncrement))
{
write!(s, "serial ").unwrap();
} else {
write!(s, "integer ").unwrap();
}
}
DbType::Int64 => {
if d.annotations
.iter()
.any(|x| matches!(x.annotation, Annotation::AutoIncrement))
{
write!(s, "bigserial ").unwrap();
} else {
write!(s, "bigint ").unwrap();
}
}
DbType::Float => write!(s, "real ").unwrap(),
DbType::Double => write!(s, "double precision ").unwrap(),
DbType::Boolean => write!(s, "boolean ").unwrap(),
DbType::Date => write!(s, "date ").unwrap(),
DbType::DateTime => write!(s, "timestamptz ").unwrap(),
DbType::Timestamp => write!(s, "timestamp ").unwrap(),
DbType::Time => write!(s, "time ").unwrap(),
};
for (idx, x) in d.annotations.iter().enumerate() {
if let Some(ref mut s) = d.statements {
trigger_annotation_to_trigger_postgres(
x.annotation,
d.table_name,
d.name,
s,
);
}
match &x.annotation {
Annotation::AutoCreateTime => {
write!(
s,
"DEFAULT {}",
match d.data_type {
DbType::Date => "CURRENT_DATE",
DbType::DateTime => "now()",
DbType::Timestamp => "CURRENT_TIMESTAMP",
DbType::Time => "CURRENT_TIME",
_ => "",
}
)
.unwrap();
}
Annotation::DefaultValue(d) => match d {
DefaultValue::String(dv) => {
write!(s, "DEFAULT {}", postgres::fmt(dv)).unwrap()
}
DefaultValue::Integer(i) => write!(s, "DEFAULT {i}").unwrap(),
DefaultValue::Float(f) => write!(s, "DEFAULT {f}").unwrap(),
DefaultValue::Boolean(b) => {
if *b {
write!(s, "DEFAULT true").unwrap();
} else {
write!(s, "DEFAULT false").unwrap();
}
}
},
Annotation::NotNull => write!(s, "NOT NULL").unwrap(),
Annotation::PrimaryKey => write!(s, "PRIMARY KEY").unwrap(),
Annotation::Unique => write!(s, "UNIQUE").unwrap(),
Annotation::ForeignKey(fk) => write!(
s,
"REFERENCES \"{}\"(\"{}\") ON DELETE {} ON UPDATE {}",
fk.table_name, fk.column_name, fk.on_delete, fk.on_update
)
.unwrap(),
_ => {}
};
if idx != d.annotations.len() - 1 {
write!(s, " ").unwrap();
}
}
Ok(())
}
}
}
}