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z_example_test.go
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z_example_test.go
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// Copyright 2014 Rana Ian. All rights reserved.
// Use of this source code is governed by The MIT License
// found in the accompanying LICENSE file.
package ora_test
import (
"bytes"
"database/sql"
"fmt"
"log"
"os"
"reflect"
"strings"
"time"
"github.com/pkg/errors"
"gopkg.in/rana/ora.v4"
)
func dbName() string {
db := testConStr[strings.LastIndex(testConStr, "@")+1:]
if db != "" {
return db
}
return os.Getenv("GO_ORA_DRV_TEST_DB")
}
func ExampleDrvStmt_Exec_insert() {
db, _ := sql.Open("ora", testConStr)
defer db.Close()
tableName := tableName()
db.Exec(fmt.Sprintf("create table %v (c1 number)", tableName))
// placeholder ':c1' is bound by position; ':c1' may be any name
var value int64 = 9
result, err := db.Exec(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName), value)
if err != nil {
panic(err)
}
rowsAffected, _ := result.RowsAffected()
fmt.Println(rowsAffected)
// Output: 1
}
func ExampleDrvStmt_Exec_insert_return_identity() {
db, _ := sql.Open("ora", testConStr)
defer db.Close()
tableName := tableName()
qry := "create table " + tableName + " (c1 number(19,0) generated always as identity (start with 1 increment by 1), c2 varchar2(48 char))"
if _, err := db.Exec(qry); err != nil {
qry = strings.Replace(qry, "generated always as identity (start with 1 increment by 1)", "DEFAULT 1", 1)
if _, err = db.Exec(qry); err != nil {
fmt.Fprintf(os.Stderr, "error creating table with %q: %v", qry, err)
return
}
}
// use a 'returning into' SQL clause and specify a nil parameter to Exec
// placeholder ':c1' is bound by position; ':c1' may be any name
result, err := db.Exec(fmt.Sprintf("insert into %v (c2) values ('go') returning c1 /*lastinsertid*/ into :c1", tableName), nil)
if err != nil {
fmt.Fprintf(os.Stderr, "error inserting 'go' with returning: %v", err)
return
}
id, _ := result.LastInsertId()
fmt.Println(id)
// Output: 1
}
func ExampleDrvStmt_Exec_insert_bool() {
db, _ := sql.Open("ora", testConStr)
defer db.Close()
tableName := tableName()
db.Exec(fmt.Sprintf("create table %v (c1 char(1 byte))", tableName))
// default false symbol is '0'
// default true symbol is '1'
// placeholder ':c1' is bound by position; ':c1' may be any name
var value bool = true
result, _ := db.Exec(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName), value)
rowsAffected, _ := result.RowsAffected()
fmt.Println(rowsAffected)
// Output: 1
}
func ExampleDrvStmt_Exec_update() {
db, _ := sql.Open("ora", testConStr)
defer db.Close()
tableName := tableName()
db.Exec(fmt.Sprintf("create table %v (c1 number)", tableName))
db.Exec(fmt.Sprintf("insert into %v (c1) values (9)", tableName))
// placeholder ':three' and ':nine' are bound by position; ':three' and ':nine' may be any name
var three int64 = 3
var nine int64 = 9
result, _ := db.Exec(fmt.Sprintf("update %v set c1 = :three where c1 = :nine", tableName), three, nine)
rowsAffected, _ := result.RowsAffected()
fmt.Println(rowsAffected)
// Output: 1
}
func ExampleDrvStmt_Exec_delete() {
db, _ := sql.Open("ora", testConStr)
defer db.Close()
tableName := tableName()
db.Exec(fmt.Sprintf("create table %v (c1 number)", tableName))
db.Exec(fmt.Sprintf("insert into %v (c1) values (9)", tableName))
// placeholder ':1' is bound by position; ':1' may be any name
var v int64 = 9
result, _ := db.Exec(fmt.Sprintf("delete from %v where c1 = :1", tableName), v)
rowsAffected, _ := result.RowsAffected()
fmt.Println(rowsAffected)
// Output: 1
}
func ExampleDrvStmt_Exec_Query() {
db, _ := sql.Open("ora", testConStr)
defer db.Close()
tableName := tableName()
db.Exec(fmt.Sprintf("create table %v (c1 number, c2 varchar2(48 char), c3 char(1 byte))", tableName))
db.Exec(fmt.Sprintf("insert into %v (c1, c2, c3) values (3, 'slice', '0')", tableName))
db.Exec(fmt.Sprintf("insert into %v (c1, c2, c3) values (7, 'map', '1')", tableName))
db.Exec(fmt.Sprintf("insert into %v (c1, c2, c3) values (9, 'channel', '1')", tableName))
// placeholder ':p' is bound by position; ':p' may be any name
var value int64 = 8
rows, _ := db.Query(fmt.Sprintf("select c1, c2, c3 from %v where c1 > :p", tableName), value)
defer rows.Close()
for rows.Next() {
var c1 int64
var c2 string
var c3 string
rows.Scan(&c1, &c2, &c3)
fmt.Printf("%v %v %v", c1, c2, c3)
}
// Output: 9 channel 1
}
// TODO: Fix QueryRow
func ExampleDrvStmt_Exec_QueryRow() {
db, _ := sql.Open("ora", testConStr)
defer db.Close()
tableName := tableName()
qry := fmt.Sprintf("create table %v (c1 number, c2 varchar2(48 char))", tableName)
if _, err := db.Exec(qry); err != nil {
log.Fatal(errors.Wrap(err, qry))
}
qry = fmt.Sprintf("insert into %v (c1, c2) values (9, 'go')", tableName)
if _, err := db.Exec(qry); err != nil {
log.Fatal(errors.Wrap(err, qry))
}
// placeholder ':p' is bound by position; ':p' may be any name
var c1 int64 = 9
var c2 string
qry = fmt.Sprintf("select c2 from %v where c1 = :p", tableName)
if err := db.QueryRow(qry, c1).Scan(&c2); err != nil {
log.Fatal(errors.Wrap(err, qry))
}
fmt.Println(c2)
// Output: go
}
func ExampleStmt_Exe_insert() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number)", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
var value int64 = 9
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName))
defer stmt.Close()
rowsAffected, _ := stmt.Exe(value)
fmt.Println(rowsAffected)
// Output: 1
}
func ExampleStmt_Exe_insert_return_identity() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
qry := "create table " + tableName + " (c1 number(19,0)"
if ver, _ := srv.Version(); strings.Contains(ver, " 12.") {
qry += " generated always as identity (start with 1 increment by 1)"
} else {
qry += " default 1"
}
qry += ", c2 varchar2(48 char))"
stmt, _ := ses.Prep(qry)
defer stmt.Close()
stmt.Exe()
// insert record
var id int64
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c2) values ('go') returning c1 into :c1", tableName))
defer stmt.Close()
// pass a numeric pointer to rereive a database generated identity value
stmt.Exe(&id)
fmt.Println(id)
// Output: 1
}
func ExampleStmt_Exe_insert_return_rowid() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number)", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
var rowid string
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (9) returning rowid into :r", tableName))
defer stmt.Close()
// pass a string pointer to rereive a rowid
stmt.Exe(&rowid)
if rowid != "" {
fmt.Println("Retrieved rowid")
}
// Output: Retrieved rowid
}
func ExampleStmt_Exe_insert_fetch_bool() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 char(1 byte))", tableName))
defer stmt.Close()
stmt.Exe()
// insert 'false' record
var falseValue bool = false
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName))
defer stmt.Close()
stmt.Exe(falseValue)
// insert 'true' record
var trueValue bool = true
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName))
defer stmt.Close()
stmt.Exe(trueValue)
// fetch inserted records
stmt, _ = ses.Prep("select c1 from "+tableName, ora.B)
defer stmt.Close()
rset, err := stmt.Qry()
if err != nil {
log.Fatal(err)
}
for rset.Next() {
fmt.Printf("%v ", rset.Row[0])
}
// Output: false true
}
func ExampleStmt_Exe_insert_fetch_bool_alternate() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 char(1 byte))", tableName))
defer stmt.Close()
stmt.Exe()
// Update StmtCfg to change the FalseRune and TrueRune inserted into the database
// insert 'false' record
var falseValue bool = false
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName))
defer stmt.Close()
stmtCfg := stmt.Cfg()
stmtCfg.FalseRune = 'N'
stmt.SetCfg(stmtCfg)
stmt.Exe(falseValue)
// insert 'true' record
var trueValue bool = true
stmt, _ = ses.Prep("insert into "+tableName+" (c1) values (:c1)", ora.B)
defer stmt.Close()
stmtCfg.TrueRune = 'Y'
stmt.SetCfg(stmtCfg)
stmt.Exe(trueValue)
// Update RsetCfg to change the TrueRune
// used to translate an Oracle char to a Go bool
// fetch inserted records
stmt, _ = ses.Prep("select c1 from "+tableName, ora.B)
defer stmt.Close()
stmtCfg.TrueRune = 'Y'
stmt.SetCfg(stmtCfg)
rset, _ := stmt.Qry()
for rset.Next() {
fmt.Printf("%v ", rset.Row[0])
}
// Output: false true
}
func ExampleStmt_Exe_update() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number)", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (9)", tableName))
defer stmt.Close()
stmt.Exe()
// update record
var a int64 = 3
var b int64 = 9
stmt, _ = ses.Prep(fmt.Sprintf("update %v set c1 = :three where c1 = :nine", tableName))
defer stmt.Close()
rowsAffected, _ := stmt.Exe(a, b)
fmt.Println(rowsAffected)
// Output: 1
}
func ExampleStmt_Exe_delete() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number)", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (9)", tableName))
defer stmt.Close()
stmt.Exe()
// delete record
var value int64 = 9
stmt, _ = ses.Prep(fmt.Sprintf("delete from %v where c1 = :1", tableName))
defer stmt.Close()
rowsAffected, _ := stmt.Exe(value)
fmt.Println(rowsAffected)
// Output: 1
}
func ExampleStmt_Exe_insert_slice() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number)", tableName))
defer stmt.Close()
stmt.Exe()
// insert one million rows with single round-trip to server
values := make([]int64, 1000)
for n, _ := range values {
values[n] = int64(n)
}
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName))
defer stmt.Close()
rowsAffected, _ := stmt.Exe(values)
fmt.Println(rowsAffected)
// Output: 1000
}
func ExampleStmt_Exe_insert_nullable() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number, c2 varchar2(48 char), c3 char(1 byte))", tableName))
defer stmt.Close()
stmt.Exe()
// create nullable Go types for inserting null
// insert record
a := ora.Int64{IsNull: true}
b := ora.String{IsNull: true}
c := ora.Bool{IsNull: true}
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2, c3) values (:c1, :c2, :c3)", tableName))
defer stmt.Close()
rowsAffected, _ := stmt.Exe(a, b, c)
fmt.Println(rowsAffected)
// Output: 1
}
func ExampleStmt_Exe_insert_fetch_blob() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 blob)", tableName))
defer stmt.Close()
stmt.Exe()
// by default, byte slices are expected to be bound and retrieved
// to/from a binary column such as a blob
// insert record
a := make([]byte, 10)
for n, _ := range a {
a[n] = byte(n)
}
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName))
defer stmt.Close()
rowsAffected, _ := stmt.Exe(a)
fmt.Println(rowsAffected)
// fetch record
stmt, _ = ses.Prep(fmt.Sprintf("select c1 from %v", tableName))
defer stmt.Close()
rset, _ := stmt.Qry()
row := rset.NextRow()
if err := rset.Err(); err != nil {
fmt.Printf("ERROR: %v", err)
} else {
fmt.Println(row[0].([]byte))
}
// Output:
// 1
// [0 1 2 3 4 5 6 7 8 9]
}
func ExampleStmt_Exe_insert_fetch_byteSlice() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// note the NUMBER column
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number)", tableName))
defer stmt.Close()
stmt.Exe()
// Specify stmt.Cfg.SetByteSlice(U8)
// Specify byte slice to be inserted into a NUMBER column
// insert records
a := make([]byte, 10)
for n, _ := range a {
a[n] = byte(n)
}
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName))
defer stmt.Close()
stmtCfg := stmt.Cfg()
stmtCfg = stmtCfg.SetByteSlice(ora.U8)
stmt.SetCfg(stmtCfg)
rowsAffected, _ := stmt.Exe(a)
fmt.Println(rowsAffected)
// fetch records
stmt, _ = ses.Prep(fmt.Sprintf("select c1 from %v", tableName))
defer stmt.Close()
rset, _ := stmt.Qry()
for rset.Next() {
fmt.Printf("%v, ", rset.Row[0])
}
// Output:
// 10
// 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
}
func ExampleStmt_Qry() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
cfg := ses.Cfg()
defer ses.SetCfg(cfg)
cfg = cfg.SetChar1(ora.B)
ses.SetCfg(cfg)
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number, c2 varchar2(48 char), c3 char(1 byte))", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2, c3) values (3, 'slice', '0')", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2, c3) values (7, 'map', '1')", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2, c3) values (9, 'channel', '1')", tableName))
defer stmt.Close()
stmt.Exe()
// fetch records
stmt, _ = ses.Prep(fmt.Sprintf("select c1, c2, c3 from %v", tableName))
defer stmt.Close()
rset, _ := stmt.Qry()
for rset.Next() {
fmt.Printf("%v %v %v, ", rset.Row[0], rset.Row[1], rset.Row[2])
}
// Output: 3 slice false, 7 map true, 9 channel true,
}
func ExampleStmt_Qry_nullable() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number, c2 varchar2(48 char), c3 char(1 byte))", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2, c3) values (null, 'slice', '0')", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2, c3) values (7, null, '1')", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2, c3) values (9, 'channel', null)", tableName))
defer stmt.Close()
stmt.Exe()
// Specify nullable return types to the Prep method
// fetch records
stmt, _ = ses.Prep(fmt.Sprintf("select c1, c2, c3 from %v", tableName), ora.OraI64, ora.OraS, ora.OraB)
defer stmt.Close()
rset, _ := stmt.Qry()
for rset.Next() {
fmt.Printf("%v %v %v, ", rset.Row[0], rset.Row[1], rset.Row[2])
}
// Output: {true 0} slice {false false}, {false 7} {false true}, {false 9} channel {true false},
}
func ExampleStmt_Qry_numerics() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number)", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (9)", tableName))
defer stmt.Close()
stmt.Exe()
// Specify various numeric return types to the Prep method
// fetch records
stmt, _ = ses.Prep(fmt.Sprintf("select c1, c1, c1, c1, c1, c1, c1, c1, c1, c1 from %v", tableName), ora.I64, ora.I32, ora.I16, ora.I8, ora.U64, ora.U32, ora.U16, ora.U8, ora.F64, ora.F32)
defer stmt.Close()
rset, _ := stmt.Qry()
row := rset.NextRow()
fmt.Printf("%v %v %v %v %v %v %v %v %v %v",
reflect.TypeOf(row[0]).Name(),
reflect.TypeOf(row[1]).Name(),
reflect.TypeOf(row[2]).Name(),
reflect.TypeOf(row[3]).Name(),
reflect.TypeOf(row[4]).Name(),
reflect.TypeOf(row[5]).Name(),
reflect.TypeOf(row[6]).Name(),
reflect.TypeOf(row[7]).Name(),
reflect.TypeOf(row[8]).Name(),
reflect.TypeOf(row[9]).Name())
// Output: int64 int32 int16 int8 uint64 uint32 uint16 uint8 float64 float32
}
func ExampleRset_Next() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number)", tableName))
defer stmt.Close()
stmt.Exe()
// insert records
a := make([]uint16, 5)
for n, _ := range a {
a[n] = uint16(n)
}
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName))
defer stmt.Close()
rowsAffected, _ := stmt.Exe(a)
fmt.Println(rowsAffected)
// fetch records
stmt, _ = ses.Prep(fmt.Sprintf("select c1 from %v", tableName), ora.U16)
rset, _ := stmt.Qry()
for rset.Next() {
fmt.Printf("%v, ", rset.Row[0])
}
// Output:
// 5
// 0, 1, 2, 3, 4,
}
func ExampleRset_NextRow() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number, c2 varchar2(48 char), c3 char(1 byte))", tableName))
defer stmt.Close()
stmt.Exe()
// insert record
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2, c3) values (7, 'go', '1')", tableName))
defer stmt.Close()
stmt.Exe()
// fetch record
stmt, _ = ses.Prep(fmt.Sprintf("select c1, c2, c3 from %v", tableName))
rset, _ := stmt.Qry()
row := rset.NextRow()
fmt.Printf("%v %v %v", row[0], row[1], row[2])
// Output: 7 go 1
}
func ExampleRset_cursor_single() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number, c2 varchar2(48 char))", tableName))
defer stmt.Close()
stmt.Exe()
// insert records
a := make([]int64, 3)
a[0] = 5
a[1] = 7
a[2] = 9
b := make([]string, 3)
b[0] = "Go is expressive, concise, clean, and efficient."
b[1] = "Its concurrency mechanisms make it easy to"
b[2] = "Go compiles quickly to machine code yet has"
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2) values (:1, :2)", tableName))
stmt.Exe(a, b)
// create proc
stmt, _ = ses.Prep(fmt.Sprintf("create or replace procedure proc1(p1 out sys_refcursor) as begin open p1 for select c1, c2 from %v order by c1; end proc1;", tableName))
defer stmt.Close()
stmt.Exe()
// pass *ora.Rset to Exec for an out sys_refcursor
// call proc
stmt, _ = ses.Prep("call proc1(:1)")
defer stmt.Close()
rset := &ora.Rset{}
if _, err := stmt.Exe(rset); err != nil {
log.Fatal(err)
}
if rset.IsOpen() {
for rset.Next() {
fmt.Println(rset.Row[0], rset.Row[1])
}
}
// Output:
// 5 Go is expressive, concise, clean, and efficient.
// 7 Its concurrency mechanisms make it easy to
// 9 Go compiles quickly to machine code yet has
}
func ExampleRset_cursor_multiple() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
// create table
tableName := tableName()
stmt, _ := ses.Prep(fmt.Sprintf("create table %v (c1 number, c2 varchar2(48 char))", tableName))
defer stmt.Close()
stmt.Exe()
// insert records
a := make([]int64, 3)
a[0] = 5
a[1] = 7
a[2] = 9
b := make([]string, 3)
b[0] = "Go is expressive, concise, clean, and efficient."
b[1] = "Its concurrency mechanisms make it easy to"
b[2] = "Go compiles quickly to machine code yet has"
stmt, _ = ses.Prep(fmt.Sprintf("insert into %v (c1, c2) values (:1, :2)", tableName))
stmt.Exe(a, b)
// create proc
stmt, _ = ses.Prep(fmt.Sprintf("create or replace procedure proc1(p1 out sys_refcursor, p2 out sys_refcursor) as begin open p1 for select c1 from %v order by c1; open p2 for select c2 from %v order by c2; end proc1;", tableName, tableName))
defer stmt.Close()
stmt.Exe()
// pass *ora.Rset to Exec for an out sys_refcursor
// call proc
stmt, _ = ses.Prep("call proc1(:1, :2)")
defer stmt.Close()
rsetC1 := &ora.Rset{}
rsetC2 := &ora.Rset{}
stmt.Exe(rsetC1, rsetC2)
fmt.Println("--- first result set ---")
if rsetC1.IsOpen() {
for rsetC1.Next() {
fmt.Println(rsetC1.Row[0])
}
}
fmt.Println("--- second result set ---")
if rsetC2.IsOpen() {
for rsetC2.Next() {
fmt.Println(rsetC2.Row[0])
}
}
// Output:
// --- first result set ---
// 5
// 7
// 9
// --- second result set ---
// Go compiles quickly to machine code yet has
// Go is expressive, concise, clean, and efficient.
// Its concurrency mechanisms make it easy to
}
func ExampleSrv_Ping() {
// setup
env, err := ora.OpenEnv()
if err != nil {
panic(err)
}
defer env.Close()
srv, err := env.OpenSrv(testSrvCfg)
if err != nil {
panic(err)
}
defer srv.Close()
// open a session before calling Ping
ses, err := srv.OpenSes(testSesCfg)
if err != nil {
panic(err)
}
defer ses.Close()
done := make(chan error, 1)
go func() {
defer close(done)
done <- ses.Ping()
}()
select {
case <-time.After(10 * time.Second):
ses.Break()
fmt.Println("Ping timed out!")
case err := <-done:
if err == nil {
fmt.Println("Ping successful")
} else {
fmt.Println("Ping ERROR:", err)
}
}
// Output: Ping successful
}
func ExampleSrv_Version() {
// setup
env, _ := ora.OpenEnv()
defer env.Close()
srv, _ := env.OpenSrv(testSrvCfg)
defer srv.Close()
// open a session before calling Version
ses, _ := srv.OpenSes(testSesCfg)
defer ses.Close()
version, err := srv.Version()
if version != "" && err == nil {
fmt.Println("Received version from server")
}
// Output: Received version from server
}
func ExampleInt64() {
// setup
env, err := ora.OpenEnv()
if err != nil {
panic(err)
}
defer env.Close()
srv, err := env.OpenSrv(testSrvCfg)
if err != nil {
panic(err)
}
defer srv.Close()
ses, err := srv.OpenSes(testSesCfg)
if err != nil {
panic(err)
}
defer ses.Close()
// create table
tableName := tableName()
stmt, err := ses.Prep(fmt.Sprintf("create table %v (c1 number(10,0))", tableName))
if err != nil {
panic(err)
}
defer stmt.Close()
if _, err := stmt.Exe(); err != nil {
panic(err)
}
// insert ora.Int64 slice
a := make([]ora.Int64, 5)
a[0] = ora.Int64{Value: -9}
a[1] = ora.Int64{Value: -1}
a[2] = ora.Int64{IsNull: true}
a[3] = ora.Int64{Value: 1}
a[4] = ora.Int64{Value: 9}
if stmt, err = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName)); err != nil {
panic(err)
}
defer stmt.Close()
stmt.Exe(a)
// Specify ora.OraI64 to Prep method to return nullable ora.Int64 values
// fetch records
if stmt, err = ses.Prep(fmt.Sprintf("select c1 from %v", tableName), ora.OraI64); err != nil {
panic(err)
}
rset, err := stmt.Qry()
if err != nil {
panic(err)
}
for rset.Next() {
fmt.Println(rset.Row[0])
}
if err := rset.Err(); err != nil {
panic(err)
}
// Output:
// {false -9}
// {false -1}
// {true 0}
// {false 1}
// {false 9}
}
func ExampleInt32() {
// setup
env, err := ora.OpenEnv()
if err != nil {
panic(err)
}
defer env.Close()
srv, err := env.OpenSrv(testSrvCfg)
if err != nil {
panic(err)
}
defer srv.Close()
ses, err := srv.OpenSes(testSesCfg)
if err != nil {
panic(err)
}
defer ses.Close()
// create table
tableName := tableName()
stmt, err := ses.Prep(fmt.Sprintf("create table %v (c1 number(10,0))", tableName))
if err != nil {
panic(err)
}
defer stmt.Close()
stmt.Exe()
// insert ora.Int32 slice
a := make([]ora.Int32, 5)
a[0] = ora.Int32{Value: -9}
a[1] = ora.Int32{Value: -1}
a[2] = ora.Int32{IsNull: true}
a[3] = ora.Int32{Value: 1}
a[4] = ora.Int32{Value: 9}
if stmt, err = ses.Prep(fmt.Sprintf("insert into %v (c1) values (:c1)", tableName)); err != nil {
panic(err)
}
defer stmt.Close()
if _, err = stmt.Exe(a); err != nil {
panic(err)
}