sea_query/backend/postgres/
types.rs

1use super::*;
2use crate::extension::postgres::*;
3
4impl TypeBuilder for PostgresQueryBuilder {
5    fn prepare_type_create_statement(&self, create: &TypeCreateStatement, sql: &mut dyn SqlWriter) {
6        write!(sql, "CREATE TYPE ").unwrap();
7
8        if let Some(name) = &create.name {
9            self.prepare_type_ref(name, sql);
10        }
11
12        if let Some(as_type) = &create.as_type {
13            write!(sql, " AS ").unwrap();
14            self.prepare_create_as_type(as_type, sql);
15        }
16
17        if !create.values.is_empty() {
18            write!(sql, " (").unwrap();
19
20            for (count, val) in create.values.iter().enumerate() {
21                if count > 0 {
22                    write!(sql, ", ").unwrap();
23                }
24                self.prepare_value(&val.to_string().into(), sql);
25            }
26
27            write!(sql, ")").unwrap();
28        }
29    }
30
31    fn prepare_type_drop_statement(&self, drop: &TypeDropStatement, sql: &mut dyn SqlWriter) {
32        write!(sql, "DROP TYPE ").unwrap();
33
34        if drop.if_exists {
35            write!(sql, "IF EXISTS ").unwrap();
36        }
37
38        drop.names.iter().fold(true, |first, name| {
39            if !first {
40                write!(sql, ", ").unwrap();
41            }
42            self.prepare_type_ref(name, sql);
43            false
44        });
45
46        if let Some(option) = &drop.option {
47            write!(sql, " ").unwrap();
48            self.prepare_drop_type_opt(option, sql);
49        }
50    }
51
52    fn prepare_type_alter_statement(&self, alter: &TypeAlterStatement, sql: &mut dyn SqlWriter) {
53        write!(sql, "ALTER TYPE ").unwrap();
54
55        if let Some(name) = &alter.name {
56            self.prepare_type_ref(name, sql);
57        }
58
59        if let Some(option) = &alter.option {
60            self.prepare_alter_type_opt(option, sql)
61        }
62    }
63}
64
65impl PostgresQueryBuilder {
66    fn prepare_create_as_type(&self, as_type: &TypeAs, sql: &mut dyn SqlWriter) {
67        write!(
68            sql,
69            "{}",
70            match as_type {
71                TypeAs::Enum => "ENUM",
72            }
73        )
74        .unwrap()
75    }
76
77    fn prepare_drop_type_opt(&self, opt: &TypeDropOpt, sql: &mut dyn SqlWriter) {
78        write!(
79            sql,
80            "{}",
81            match opt {
82                TypeDropOpt::Cascade => "CASCADE",
83                TypeDropOpt::Restrict => "RESTRICT",
84            }
85        )
86        .unwrap()
87    }
88
89    fn prepare_alter_type_opt(&self, opt: &TypeAlterOpt, sql: &mut dyn SqlWriter) {
90        match opt {
91            TypeAlterOpt::Add {
92                value,
93                placement,
94                if_not_exists,
95            } => {
96                write!(sql, " ADD VALUE ").unwrap();
97                if *if_not_exists {
98                    write!(sql, "IF NOT EXISTS ").unwrap();
99                }
100                self.prepare_value(&value.to_string().into(), sql);
101                if let Some(add_option) = placement {
102                    match add_option {
103                        TypeAlterAddOpt::Before(before_value) => {
104                            write!(sql, " BEFORE ").unwrap();
105                            self.prepare_value(&before_value.to_string().into(), sql);
106                        }
107                        TypeAlterAddOpt::After(after_value) => {
108                            write!(sql, " AFTER ").unwrap();
109                            self.prepare_value(&after_value.to_string().into(), sql);
110                        }
111                    }
112                }
113            }
114            TypeAlterOpt::Rename(new_name) => {
115                write!(sql, " RENAME TO ").unwrap();
116                self.prepare_value(&new_name.to_string().into(), sql);
117            }
118            TypeAlterOpt::RenameValue(existing, new_name) => {
119                write!(sql, " RENAME VALUE ").unwrap();
120                self.prepare_value(&existing.to_string().into(), sql);
121                write!(sql, " TO ").unwrap();
122                self.prepare_value(&new_name.to_string().into(), sql);
123            }
124        }
125    }
126}
sea_query/backend/postgres/types.rs

sea_query/backend/postgres/
types.rs
