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authorIndrajith K L2022-12-03 17:00:20 +0530
committerIndrajith K L2022-12-03 17:00:20 +0530
commitf5c4671bfbad96bf346bd7e9a21fc4317b4959df (patch)
tree2764fc62da58f2ba8da7ed341643fc359873142f /v_windows/v/old/examples/database/orm.v
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Adds most of the toolsHEADmaster
Diffstat (limited to 'v_windows/v/old/examples/database/orm.v')
-rw-r--r--v_windows/v/old/examples/database/orm.v260
1 files changed, 260 insertions, 0 deletions
diff --git a/v_windows/v/old/examples/database/orm.v b/v_windows/v/old/examples/database/orm.v
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+++ b/v_windows/v/old/examples/database/orm.v
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+import sqlite
+import mysql
+import pg
+
+[table: 'modules']
+struct Module {
+ id int [primary; sql: serial]
+ name string
+ nr_downloads int [sql: u64]
+ creator User
+}
+
+struct User {
+ id int [primary; sql: serial]
+ age int [unique: 'user']
+ name string [sql: 'username'; unique]
+ is_customer bool [sql: 'abc'; unique: 'user']
+ skipped_string string [skip]
+}
+
+struct Parent {
+ id int [primary; sql: serial]
+ name string
+ children []Child [fkey: 'parent_id']
+}
+
+struct Child {
+ id int [primary; sql: serial]
+ parent_id int
+ name string
+}
+
+fn main() {
+ sqlite3_array()
+ mysql_array()
+ psql_array()
+
+ sqlite3()
+ mysql()
+ psql()
+}
+
+fn sqlite3_array() {
+ mut db := sqlite.connect(':memory:') or { panic(err) }
+ sql db {
+ create table Parent
+ }
+
+ par := Parent{
+ name: 'test'
+ children: [
+ Child{
+ name: 'abc'
+ },
+ Child{
+ name: 'def'
+ },
+ ]
+ }
+
+ sql db {
+ insert par into Parent
+ }
+
+ parent := sql db {
+ select from Parent where id == 1
+ }
+
+ sql db {
+ drop table Child
+ drop table Parent
+ }
+
+ eprintln(parent)
+}
+
+fn mysql_array() {
+ mut db := mysql.Connection{
+ host: 'localhost'
+ port: 3306
+ username: 'root'
+ password: 'abc'
+ dbname: 'test'
+ }
+ db.connect() or { panic(err) }
+
+ sql db {
+ create table Parent
+ }
+
+ par := Parent{
+ name: 'test'
+ children: [
+ Child{
+ name: 'abc'
+ },
+ Child{
+ name: 'def'
+ },
+ ]
+ }
+
+ sql db {
+ insert par into Parent
+ }
+
+ parent := sql db {
+ select from Parent where id == 1
+ }
+
+ eprintln(parent)
+
+ sql db {
+ drop table Child
+ drop table Parent
+ }
+
+ db.close()
+}
+
+fn psql_array() {
+ mut db := pg.connect(host: 'localhost', user: 'test', password: 'abc', dbname: 'test') or {
+ panic(err)
+ }
+
+ sql db {
+ create table Parent
+ }
+
+ par := Parent{
+ name: 'test'
+ children: [
+ Child{
+ name: 'abc'
+ },
+ Child{
+ name: 'def'
+ },
+ ]
+ }
+
+ sql db {
+ insert par into Parent
+ }
+
+ parent := sql db {
+ select from Parent where id == 1
+ }
+
+ eprintln(parent)
+
+ sql db {
+ drop table Child
+ drop table Parent
+ }
+
+ db.close()
+}
+
+fn sqlite3() {
+ mut db := sqlite.connect(':memory:') or { panic(err) }
+ sql db {
+ create table Module
+ }
+
+ mod := Module{
+ name: 'test'
+ nr_downloads: 10
+ creator: User{
+ age: 21
+ name: 'VUser'
+ is_customer: true
+ }
+ }
+ sql db {
+ insert mod into Module
+ }
+
+ modul := sql db {
+ select from Module where id == 1
+ }
+
+ sql db {
+ drop table Module
+ }
+
+ eprintln(modul)
+ db.close() or { panic(err) }
+}
+
+fn mysql() {
+ mut conn := mysql.Connection{
+ host: 'localhost'
+ port: 3306
+ username: 'root'
+ password: 'abc'
+ dbname: 'test'
+ }
+ conn.connect() or { panic(err) }
+
+ sql conn {
+ create table Module
+ }
+
+ mod := Module{
+ name: 'test'
+ nr_downloads: 10
+ creator: User{
+ age: 21
+ name: 'VUser'
+ is_customer: true
+ }
+ }
+
+ sql conn {
+ insert mod into Module
+ }
+
+ m := sql conn {
+ select from Module where id == 1
+ }
+
+ eprintln(m)
+ conn.close()
+}
+
+fn psql() {
+ mut db := pg.connect(host: 'localhost', user: 'test', password: 'abc', dbname: 'test') or {
+ panic(err)
+ }
+
+ mod := Module{
+ name: 'test'
+ nr_downloads: 10
+ creator: User{
+ age: 21
+ name: 'VUser'
+ is_customer: true
+ }
+ }
+
+ sql db {
+ create table Module
+ }
+
+ sql db {
+ insert mod into Module
+ }
+
+ modul := sql db {
+ select from Module where id == 1
+ }
+
+ sql db {
+ drop table Module
+ }
+
+ eprintln(modul)
+ db.close()
+}