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database-helper.js
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database-helper.js
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const sqlite3 = require('sqlite3');
module.exports = class DatabaseHelper {
constructor (db) {
this.db = db;
}
all(sql) {
return new Promise((resolve,reject)=>{
this.db.all(sql,(err,row)=>{
try {
if (err) {
reject(err);
} else {
resolve(row);
}
} catch(e) {
reject(e);
}
});
});
}
get(sql) {
return new Promise((resolve,reject)=>{
try {
this.db.get(sql,(err,row)=>{
if (err) {
reject(err);
} else {
resolve(row);
}
});
} catch(e) {
reject(e);
}
});
}
run(sql){
return new Promise((resolve,reject)=>{
try {
this.db.run(sql,(err)=>{
if (err) reject(err);
resolve();
})
} catch(e) {
throw e;
}
});
}
stmt_all(stmt,...params) {
return new Promise((resolve,reject)=>{
try {
stmt.all(...params,(err,row)=>{
if (err) {
reject(err);
} else {
resolve(row);
}
});
} catch(e) {
reject(e);
}
});
}
stmt_get(stmt, ...params) {
return new Promise((resolve,reject)=>{
try {
stmt.get(...params,(err,row)=>{
if (err) {
reject(err);
} else {
resolve(row);
}
});
} catch(e) {
reject(e);
}
});
}
stmt_run(stmt, ...params) {
return new Promise((resolve,reject)=>{
try {
stmt.run(...params,(err)=>{
if (err) {
reject(err);
} else {
resolve();
}
});
} catch(e) {
reject(e);
}
});
}
get_db() {
return this.db;
}
}