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main.go
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main.go
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package main
import (
"database/sql"
"database/sql/driver"
"flag"
"fmt"
go_ora "github.com/sijms/go-ora/v2"
"os"
"time"
)
type test1 struct {
Id int64 `udt:"test_id"`
Name *sql.NullString `udt:"test_name"`
Data1 string `udt:"test_data1"`
Data2 string `udt:"test_data2"`
Data3 string `udt:"test_data3"`
Date time.Time `udt:"test_date"`
}
func createTable(conn *go_ora.Connection) error {
t := time.Now()
sqlText := `CREATE TABLE GOORA_TEMP_VISIT(
VISIT_ID number(10) NOT NULL,
TEST_TYPE TEST_TYPE1,
PRIMARY KEY(VISIT_ID)
)`
_, err := conn.Exec(sqlText)
if err != nil {
return err
}
fmt.Println("Finish create table GOORA_TEMP_VISIT :", time.Now().Sub(t))
return nil
}
func insertData(conn *go_ora.Connection) error {
t := time.Now()
index := 1
stmt := go_ora.NewStmt(`INSERT INTO GOORA_TEMP_VISIT(VISIT_ID, TEST_TYPE) VALUES(:1, :2)`, conn)
defer func() {
_ = stmt.Close()
}()
nameText := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
for index = 1; index <= 100; index++ {
var test test1
test.Id = int64(index)
test.Name = &sql.NullString{String: nameText[:index], Valid: true}
test.Data1 = nameText
test.Data2 = nameText
test.Data3 = nameText
test.Date = time.Now()
_, err := stmt.Exec([]driver.Value{index, test})
if err != nil {
return err
}
}
fmt.Println("100 rows inserted: ", time.Now().Sub(t))
return nil
}
func outputPar(conn *go_ora.Connection) error {
t := time.Now()
sqlText := `BEGIN
SELECT VISIT_ID, TEST_TYPE INTO :1, :2 FROM GOORA_TEMP_VISIT WHERE VISIT_ID = 1;
END;`
stmt := go_ora.NewStmt(sqlText, conn)
defer func() {
err := stmt.Close()
if err != nil {
fmt.Println("Can't close stmt: ", err)
}
}()
var (
visitId int64
test test1
)
err := stmt.AddParam("1", &visitId, 0, go_ora.Output)
if err != nil {
return err
}
err = stmt.AddParam("2", &test, 0, go_ora.Output)
if err != nil {
return err
}
_, err = stmt.Exec(nil)
if err != nil {
return err
}
fmt.Println("ID: ", visitId)
fmt.Println("Test: ", test)
fmt.Println("Test Name: ", test.Name)
fmt.Println("Finish query output par: ", time.Now().Sub(t))
return nil
}
func queryData(conn *go_ora.Connection) error {
t := time.Now()
stmt := go_ora.NewStmt("SELECT VISIT_ID, TEST_TYPE FROM GOORA_TEMP_VISIT", conn)
defer func() {
err := stmt.Close()
if err != nil {
fmt.Println("Can't close stmt: ", err)
}
}()
rows, err := stmt.Query_(nil)
if err != nil {
return err
}
var (
visitID int64
test test1
count int
)
for rows.Next_() {
err = rows.Scan(&visitID, &test)
if err != nil {
return err
}
fmt.Println("ID: ", visitID)
fmt.Println("Name: ", test.Name)
fmt.Println("Data1: ", test.Data1)
fmt.Println("Data2: ", test.Data2)
fmt.Println("Data3: ", test.Data3)
fmt.Println("Time: ", test.Date)
count++
}
if rows.Err() != nil {
return rows.Err()
}
fmt.Printf("Finish query %d rows: %v\n", count, time.Now().Sub(t))
return nil
}
func dropTable(conn *go_ora.Connection) error {
t := time.Now()
_, err := conn.Exec("drop table GOORA_TEMP_VISIT purge")
if err != nil {
return err
}
fmt.Println("Finish drop table: ", time.Now().Sub(t))
return nil
}
func createUDT(conn *go_ora.Connection) error {
t := time.Now()
sqlText := `create or replace TYPE TEST_TYPE1 IS OBJECT
(
TEST_ID NUMBER(10, 0),
TEST_NAME VARCHAR2(200),
TEST_DATA1 VARCHAR2(200),
TEST_DATA2 VARCHAR2(200),
TEST_DATA3 VARCHAR2(200),
TEST_DATE DATE
)`
stmt := go_ora.NewStmt(sqlText, conn)
defer func() {
_ = stmt.Close()
}()
_, err := stmt.Exec(nil)
if err != nil {
return err
}
fmt.Println("Finish create UDT: ", time.Now().Sub(t))
return nil
}
func dropUDT(conn *go_ora.Connection) error {
t := time.Now()
stmt := go_ora.NewStmt("drop type TEST_TYPE1", conn)
defer func() {
_ = stmt.Close()
}()
_, err := stmt.Exec(nil)
if err != nil {
return err
}
fmt.Println("Finish drop UDT: ", time.Now().Sub(t))
return nil
}
func usage() {
fmt.Println()
fmt.Println("udt_par")
fmt.Println(" a complete code for testing user define type (UDT) parameter [input and output].")
fmt.Println()
fmt.Println("Usage:")
fmt.Println(` udt_par -server server_url`)
flag.PrintDefaults()
fmt.Println()
fmt.Println("Example:")
fmt.Println(` udt_par -server "oracle://user:pass@server/service_name"`)
fmt.Println()
}
func main() {
var (
server string
)
flag.StringVar(&server, "server", "", "Server's URL, oracle://user:pass@server/service_name")
flag.Parse()
connStr := os.ExpandEnv(server)
if connStr == "" {
fmt.Println("Missing -server option")
usage()
os.Exit(1)
}
fmt.Println("Connection string: ", connStr)
conn, err := go_ora.NewConnection(connStr)
if err != nil {
fmt.Println("Can't open driver", err)
return
}
err = conn.Open()
if err != nil {
fmt.Println("Can't open connection", err)
return
}
defer func() {
err = conn.Close()
if err != nil {
fmt.Println("Can't close connection", err)
}
}()
err = createUDT(conn)
if err != nil {
fmt.Println("Can't create UDT: ", err)
return
}
defer func() {
err = dropUDT(conn)
if err != nil {
fmt.Println("Can't drop UDT", err)
}
}()
err = createTable(conn)
if err != nil {
fmt.Println("Can't create table: ", err)
}
defer func() {
err = dropTable(conn)
if err != nil {
fmt.Println("Can't drop table: ", err)
}
}()
err = conn.RegisterType("TEST_TYPE1", test1{})
if err != nil {
fmt.Println("Can't register UDT: ", err)
return
}
fmt.Println("UDT registered successfully")
err = insertData(conn)
if err != nil {
fmt.Println("Can't insert data: ", err)
return
}
err = queryData(conn)
if err != nil {
fmt.Println("Can't query data: ", err)
return
}
err = outputPar(conn)
if err != nil {
fmt.Println("Can't query output par: ", err)
return
}
}