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        sql.write_str("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            sql.write_str(" AS ").unwrap();
14            self.prepare_create_as_type(as_type, sql);
15        }
16
17        if !create.values.is_empty() {
18            sql.write_str(" (").unwrap();
19
20            let mut vals = create.values.iter();
21            join_io!(
22                vals,
23                val,
24                join {
25                    sql.write_str(", ").unwrap();
26                },
27                do {
28                    self.prepare_value(val.to_string().into(), sql);
29                }
30            );
31
32            sql.write_str(")").unwrap();
33        }
34    }
35
36    fn prepare_type_drop_statement(&self, drop: &TypeDropStatement, sql: &mut dyn SqlWriter) {
37        sql.write_str("DROP TYPE ").unwrap();
38
39        if drop.if_exists {
40            sql.write_str("IF EXISTS ").unwrap();
41        }
42
43        let mut names = drop.names.iter();
44
45        join_io!(
46            names,
47            name,
48            join {
49                sql.write_str(", ").unwrap();
50            },
51            do {
52                self.prepare_type_ref(name, sql);
53            }
54        );
55
56        if let Some(option) = &drop.option {
57            sql.write_str(" ").unwrap();
58            self.prepare_drop_type_opt(option, sql);
59        }
60    }
61
62    fn prepare_type_alter_statement(&self, alter: &TypeAlterStatement, sql: &mut dyn SqlWriter) {
63        sql.write_str("ALTER TYPE ").unwrap();
64
65        if let Some(name) = &alter.name {
66            self.prepare_type_ref(name, sql);
67        }
68
69        if let Some(option) = &alter.option {
70            self.prepare_alter_type_opt(option, sql)
71        }
72    }
73}
74
75impl PostgresQueryBuilder {
76    fn prepare_create_as_type(&self, as_type: &TypeAs, sql: &mut dyn SqlWriter) {
77        sql.write_str(match as_type {
78            TypeAs::Enum => "ENUM",
79        })
80        .unwrap();
81    }
82
83    fn prepare_drop_type_opt(&self, opt: &TypeDropOpt, sql: &mut dyn SqlWriter) {
84        sql.write_str(match opt {
85            TypeDropOpt::Cascade => "CASCADE",
86            TypeDropOpt::Restrict => "RESTRICT",
87        })
88        .unwrap();
89    }
90
91    fn prepare_alter_type_opt(&self, opt: &TypeAlterOpt, sql: &mut dyn SqlWriter) {
92        match opt {
93            TypeAlterOpt::Add {
94                value,
95                placement,
96                if_not_exists,
97            } => {
98                sql.write_str(" ADD VALUE ").unwrap();
99                if *if_not_exists {
100                    sql.write_str("IF NOT EXISTS ").unwrap();
101                }
102                self.prepare_value(value.to_string().into(), sql);
103                if let Some(add_option) = placement {
104                    match add_option {
105                        TypeAlterAddOpt::Before(before_value) => {
106                            sql.write_str(" BEFORE ").unwrap();
107                            self.prepare_value(before_value.to_string().into(), sql);
108                        }
109                        TypeAlterAddOpt::After(after_value) => {
110                            sql.write_str(" AFTER ").unwrap();
111                            self.prepare_value(after_value.to_string().into(), sql);
112                        }
113                    }
114                }
115            }
116            TypeAlterOpt::Rename(new_name) => {
117                sql.write_str(" RENAME TO ").unwrap();
118                self.prepare_iden(new_name, sql);
119            }
120            TypeAlterOpt::RenameValue(existing, new_name) => {
121                sql.write_str(" RENAME VALUE ").unwrap();
122                self.prepare_value(existing.to_string().into(), sql);
123                sql.write_str(" TO ").unwrap();
124                self.prepare_value(new_name.to_string().into(), sql);
125            }
126        }
127    }
128}
sea_query/backend/postgres/types.rs

sea_query/backend/postgres/
types.rs
