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IssueRepository.go
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IssueRepository.go
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package db
import (
"github.com/jmoiron/sqlx"
"log"
"github.com/PacktPublishing/Advanced-Go-Programming-in-7-Days/Day-6/4-Database/easy-issues/domain"
)
const (
issuesDriver = "sqlite3"
querySelectAllIssues = "SELECT * FROM issues"
querySelectIssue = "SELECT * FROM issues WHERE issue_id=?"
queryInsertIssue = "INSERT INTO issues (issue_title, issue_description, issue_projectId, issue_ownerId, issue_status, issue_priority) VALUES (?, ?, ?, ?, ?, ?)"
queryDeleteIssue = "DELETE FROM issues WHERE issue_id=? LIMIT 1"
)
const issueSchema = `CREATE TABLE IF NOT EXISTS issues (
issue_id integer primary key autoincrement,
issue_title text,
issue_description text,
issue_projectId integer,
issue_ownerId integer,
issue_status text,
issue_priority text);`
// ProjectRepository concrete implementation of sql db
type IssueRepository struct {
db *sqlx.DB
}
func NewIssueRepository() *IssueRepository {
db, err := sqlx.Open(issuesDriver, ":memory:")
if err != nil {
log.Fatal("Failed to connect to database.")
}
r := &IssueRepository{
db: db,
}
r.Init(issueSchema)
return r
}
func (r *IssueRepository)Init(schema string) error {
// execute a query on the server
_, err := r.db.Exec(schema)
return err
}
func (r *IssueRepository)All()([]*domain.Issue, error) {
rows, err := r.db.Queryx(querySelectAllIssues)
if err != nil {
return nil, err
}
issues := make([]*domain.Issue, 0, 0)
for rows.Next() {
var u domain.Issue
err = rows.StructScan(&u)
if err != nil {
return nil, err
}
issues = append(issues, &u)
}
return issues, nil
}
func (r *IssueRepository)GetById(id int64)(*domain.Issue, error) {
stmt, err := r.db.Preparex(querySelectIssue)
if err != nil {
return nil, err
}
var u domain.Issue
err = stmt.Get(&u, id)
if err != nil {
return nil, err
}
return &u, nil
}
func (r *IssueRepository)Create(u *domain.Issue) error {
stmt, err := r.db.Preparex(queryInsertIssue)
if err != nil {
return err
}
res, err := stmt.Exec(u.Title, u.Description, u.OwnerId, u.ProjectId, u.Status, u.Priority)
if err != nil {
return err
}
lastId, err := res.LastInsertId()
if err != nil {
return err
}
u.Id = lastId
return nil
}
func (r *IssueRepository)Delete(id int64) error {
stmt, err := r.db.Preparex(queryDeleteIssue)
if err != nil {
return err
}
_, err = stmt.Exec(id)
if err != nil {
return err
}
return nil
}