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SQLiteDB: add basic VFS binding for SQLite database file

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Dany LE 2023-02-01 10:12:35 +01:00
parent e3deffe907
commit cd5b0f66cc
12 changed files with 2405 additions and 168 deletions
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632
SQLiteDB/LibSQLite.ts
View File

@ -1,25 +1,301 @@
namespace OS {
export namespace API
{
export class SQLiteDBBase {
/**
* Generate SQL expression from input object
*
* Example of input object
* ```ts
* {
* where: {
* id$gte: 10,
* user: "dany'",
* $or: {
* 'user.email': "test@mail.com",
* age$lte: 30,
* $and: {
* 'user.birth$ne': 1986,
* age$not_between: [20,30],
* name$not_like: "%LE"
* }
* }
* },
* fields: ['name as n', 'id', 'email'],
* order: ['user.name$asc', "id$desc"],
* joins: {
* cid: 'Category.id',
* did: 'Country.id'
* }
*}
* ```
* This will generate the followings expressions:
* - `( self.name as n,self.id,self.email )` for fields
* - condition:
* ```
* (
* ( self.id >= 10 ) AND
* ( self.user = 'dany''' ) AND
* (
* ( user.email = 'test@mail.com' ) OR
* ( self.age <= 30 ) OR
* (
* ( user.birth != 1986 ) AND
* ( self.age NOT BETWEEN 20 AND 30 ) AND
* ( self.name NOT LIKE '%LE' )
* )
* )
* )
* ```
* - order: `user.name ASC,self.id DESC`
* - joining:
* ```
* INNER JOIN Category ON self.cid = Category.id
* INNER JOIN Country ON self.did = Country.id
* ```
*
*/
class SQLiteQueryGenerator {
private _where: string;
private _fields: string;
private _order: string;
private _joins: string;
private _is_joining: boolean;
constructor(obj: GenericObject<any>)
{
this._where = undefined;
this._fields = undefined;
this._order = undefined;
this._joins = undefined;
this._is_joining = false;
if(obj.joins)
{
this._is_joining = true;
this._joins = this.joins(obj.joins);
}
if(obj.where)
{
this._where = this.where("$and", obj.where);
}
if(obj.fields)
{
this._fields = `( ${obj.fields.map(v=>this.infer_field(v)).join(",")} )`;
}
if(obj.order)
{
this._order = this.order_by(obj.order);
}
}
private infer_field(k: string) : string
{
if(!this._is_joining || k.indexOf(".") > 0) return k;
return `self.${k}`;
}
private joins(data: GenericObject<any>): string
{
let joins_arr = [];
for(let k in data)
{
let v = data[k];
let arr = v.split('.')
if(arr.length != 2)
{
throw new Error(__("Other table name parsing error: {0}", v).__());
}
joins_arr.push(`INNER JOIN ${arr[0]} ON ${this.infer_field(k)} = ${v}`);
}
return joins_arr.join(" ");
}
print()
{
console.log(this._fields);
console.log(this._where);
console.log(this._order);
console.log(this._joins);
}
private order_by(order: string[]): string
{
if(! Array.isArray(order))
{
throw new Error(__("Invalid type: expect array get {0}", typeof(order)).__());
}
return order.map((v,_) => {
const arr = v.split('$');
if(arr.length != 2)
{
throw new Error(__("Invalid field order format {0}", v).__());
}
switch(arr[1])
{
case 'asc': return `${this.infer_field(arr[0])} ASC`;
case 'desc': return `${this.infer_field(arr[0])} DESC`;
default: throw new Error(__("Invalid field order type {0}", v).__());
}
}).join(",");
}
private escape_string(s: string)
{
let regex = /[']/g;
var chunkIndex = regex.lastIndex = 0;
var escapedVal = '';
var match;
while ((match = regex.exec(s))) {
escapedVal += s.slice(chunkIndex, match.index) + {'\'': '\'\''}[match[0]];
chunkIndex = regex.lastIndex;
}
if (chunkIndex === 0) {
// Nothing was escaped
return "'" + s + "'";
}
if (chunkIndex < s.length) {
return "'" + escapedVal + s.slice(chunkIndex) + "'";
}
return "'" + escapedVal + "'";
}
private parse_value(v:any, t: string[]): string
{
if(! (t as any).includes(typeof(v)))
{
throw new Error(__("Invalid type: expect [{0}] get {1}", t.join(","), typeof(v)).__());
}
switch(typeof(v))
{
case 'number': return JSON.stringify(v);
case 'string': return this.escape_string(v);
default: throw new Error(__("Un supported value {0} of type {1}", v, typeof(v)).__());
}
}
private binary(k: string,v :any)
{
const arr = k.split("$");
if(arr.length > 2)
{
throw new Error(__("Invalid left hand side format: {0}", k).__());
}
if(arr.length == 2)
{
switch(arr[1])
{
case "gt":
return `( ${this.infer_field(arr[0])} > ${this.parse_value(v, ['number'])} )`;
case "gte":
return `( ${this.infer_field(arr[0])} >= ${this.parse_value(v, ['number'])} )`;
case "lt":
return `( ${this.infer_field(arr[0])} < ${this.parse_value(v, ['number'])} )`;
case "lte":
return `( ${this.infer_field(arr[0])} <= ${this.parse_value(v, ['number'])} )`;
case "ne":
return `( ${this.infer_field(arr[0])} != ${this.parse_value(v, ['number', 'string'])} )`;
case "between":
return `( ${this.infer_field(arr[0])} BETWEEN ${this.parse_value(v[0],['number'])} AND ${this.parse_value(v[1],['number'])} )`;
case "not_between":
return `( ${this.infer_field(arr[0])} NOT BETWEEN ${this.parse_value(v[0],['number'])} AND ${this.parse_value(v[1],['number'])} )`;
case "in":
return `( ${this.infer_field(arr[0])} IN [${this.parse_value(v[0],['number'])}, ${this.parse_value(v[1],['number'])}] )`;
case "not_in":
return `( ${this.infer_field(arr[0])} NOT IN [${this.parse_value(v[0],['number'])}, ${this.parse_value(v[1],['number'])}] )`;
case "like":
return `( ${this.infer_field(arr[0])} LIKE ${this.parse_value(v,['string'])} )`;
case "not_like":
return `( ${this.infer_field(arr[0])} NOT LIKE ${this.parse_value(v,['string'])} )`;
default: throw new Error(__("Unsupported operator `{0}`", arr[1]).__());
}
}
else
{
return `( ${this.infer_field(arr[0])} = ${this.parse_value(v, ['number', 'string'])} )`;
}
}
private where(op:string, obj: GenericObject<any>): string
{
let join_op = undefined;
switch(op)
{
case "$and":
join_op = " AND ";
break;
case "$or":
join_op = " OR ";
break;
default:
throw new Error(__("Invalid operator {0}", op).__());
}
if(typeof obj !== "object")
{
throw new Error(__("Invalid input data for operator {0}", op).__());
}
let arr = [];
for(let k in obj){
if(k == "$and" || k=="$or")
{
arr.push(this.where(k, obj[k]));
}
else
{
arr.push(this.binary(k, obj[k]));
}
}
return `( ${arr.join(join_op)} )`;
}
}
class SQLiteDBCore {
static REGISTY: GenericObject<VFS.BaseFileHandle>;
private db_file: VFS.BaseFileHandle;
constructor(path: VFS.BaseFileHandle | string)
{
if(!SQLiteDBCore.REGISTY)
{
SQLiteDBCore.REGISTY = {};
}
this.db_file = path.asFileHandle();
if(SQLiteDBCore.REGISTY[this.db_file.path])
{
this.db_file = SQLiteDBCore.REGISTY[this.db_file.path];
}
else
{
SQLiteDBCore.REGISTY[this.db_file.path] = this.db_file;
}
}
private pwd(): VFS.BaseFileHandle
{
return "pkg://SQLiteDB/".asFileHandle();
}
fileinfo(): FileInfoType
{
return this.db_file.info;
}
/**
* init and create the db file if it does not exist
*/
private init(): Promise<any>
init(): Promise<any>
{
return new Promise(async (ok, reject) => {
try{
if(this.db_file.ready)
{
return ok(true);
}
let request = {
action: 'init',
args: {
@ -77,43 +353,92 @@ namespace OS {
}
});
}
query(sql: string): Promise<any>
{
let rq = {
action: 'query',
args: {
query: sql
}
}
return this.request(rq);
}
select(table: string, fields: string[], condition: string): Promise<GenericObject<any>[]>
select(filter: GenericObject<any>): Promise<any>
{
let rq = {
action: 'select',
args: {
table: table,
fields: fields.join(","),
cond: condition
filter
}
}
return this.request(rq);
}
list_tables(): Promise<string[]>
delete_records(filter: GenericObject<any>): Promise<any>
{
return new Promise(async (ok, reject) => {
try {
let result = await this.select(
"sqlite_master", ["name"], "type ='table'");
return ok(result.map((e) => e.name))
let rq = {
action: 'delete_records',
args: {
filter
}
catch(e)
{
reject(__e(e))
}
return this.request(rq);
}
drop_table(table_name: string): Promise<any>
{
let rq = {
action: 'drop_table',
args:{table_name}
}
return this.request(rq);
}
list_tables(): Promise<any>
{
let rq = {
action: 'list_table',
args: {}
}
return this.request(rq);
}
create_table(table, scheme): Promise<any>
{
let rq = {
action: 'create_table',
args: {
table_name: table,
scheme
}
});
}
return this.request(rq);
}
get_table_scheme(table_name:string): Promise<any>
{
let rq = {
action: 'table_scheme',
args: {
table_name
}
}
return this.request(rq);
}
insert(table_name:string, record: GenericObject<any>): Promise<any>
{
let rq = {
action: 'insert',
args: {
table_name,
record
}
}
return this.request(rq);
}
update(table_name:string, record: GenericObject<any>): Promise<any>
{
let rq = {
action: 'update',
args: {
table_name,
record
}
}
return this.request(rq);
}
last_insert_id(): Promise<number>
@ -126,5 +451,260 @@ namespace OS {
return this.request(rq);
}
}
export namespace VFS {
/**
* SQLite VFS handle for database accessing
*
* A Sqlite file handle shall be in the following formats:
* * `sqlite://remote/path/to/file.db` refers to the entire databale (`remote/path/to/file.db` is relative to the home folder)
* - read operation, will list all available tables
* - write operations will create table
* - rm operation will delete table
* - meta operation will return file info
* - other operations are not supported
* * `sqlite://remote/path/to/file.db@table_name` refers to the table `table_name` in the database
* - meta operation will return fileinfo with table scheme information
* - read operation will read all records by filter defined by the filter operation
* - write operations will insert a new record
* - rm operation will delete records by filter defined by the filter operation
* - filter operation sets the filter for the table
* - other operations are not supported
* - `sqlite://remote/path/to/file.db@table_name@id` refers to a records in `table_name` with ID `id`
* - read operation will read the current record
* - write operation will update current record
* - rm operation will delete current record
* - other operations are not supported
*
* Some example of filters:
* ```ts
* handle.filter = (filter) => {
* filter.fields()
* }
* ```
*
* @class SqliteFileHandle
* @extends {BaseFileHandle}
*/
class SqliteFileHandle extends BaseFileHandle
{
private _handle: SQLiteDBCore;
private _table_name: string;
private _id: number;
/**
* Set a file path to the current file handle
*
*
* @param {string} p
* @returns {void}
* @memberof SqliteFileHandle
*/
setPath(p: string): void {
let arr = p.split("@");
super.setPath(arr[0]);
if(arr.length > 3)
{
throw new Error(__("Invalid file path").__());
}
this.path = p;
this._table_name = arr[1];
this._id = arr[2] ? parseInt(arr[2]) : undefined;
this._handle = new SQLiteDBCore(`home://${this.genealogy.join("/")}`);
}
/**
* Read database file meta-data
*
* Return file info on the target database file, if the table_name is specified
* return also the table scheme
*
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
meta(): Promise<RequestResult> {
return new Promise(async (resolve, reject) => {
try {
await this._handle.init();
const d = {result: this._handle.fileinfo(), error: false};
if(this._table_name)
{
const data = await this._handle.get_table_scheme(this._table_name);
if(data.length == 0)
{
d.result.scheme = undefined
}
else
{
d.result.scheme = {}
for(let v of data)
{
d.result.scheme[v.name] = v.type;
}
}
}
return resolve(d);
} catch (e) {
return reject(__e(e));
}
});
}
/**
* Query the database based on the provided info
*
* If no table is provided, return list of tables in the
* data base.
* If the current table is specified:
* - if the record id is specfied return the record
* - otherwise, return the records in the table using the specified filter
*
* @protected
* @param {any} t filter type
* @returns {Promise<any>}
* @memberof SqliteFileHandle
*/
protected _rd(user_data: any): Promise<any> {
return new Promise(async (resolve, reject) => {
try{
if(this._table_name && ! this.info.scheme)
{
throw new Error(__("Table `{0}` does not exists in database: {1}", this._table_name, this.path).__());
}
if(!this._table_name)
{
// return list of tables in form of data base file handles in ready mode
let list = await this._handle.list_tables();
const map = {} as GenericObject<BaseFileHandle>;
for(let v of list)
{
map[v.name] = `${this.path}@${v.name}`.asFileHandle();
}
this.cache = map;
resolve(map);
}
else
{
// return all the data in the table set by the filter
// if this is a table, return the filtered records
// otherwise, it is a record, fetch only that record
let filter = user_data;
if(!filter || this._id)
{
filter = {};
}
filter.table_name = this._table_name;
if(this._id)
{
filter.where = { id: this._id};
}
let data = await this._handle.select(filter);
if(this._id)
{
this.cache = data[0];
}
else
{
this.cache = data;
}
resolve(this.cache)
}
}
catch (e) {
return reject(__e(e));
}
});
}
/**
* Write commit file cache to the remote database
*
* @protected
* @param {string} t is table name, used only when create table
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
protected _wr(t: string): Promise<RequestResult> {
return new Promise(async (resolve, reject) => {
try{
if(!this.cache)
{
throw new Error(__("No data to submit to remote database, please check the `cache` field").__());
}
if(this._id && this._table_name)
{
this.cache.id = this._id;
const ret = await this._handle.update(this._table_name, this.cache);
resolve({result:ret, error: false});
return
}
if(this._table_name)
{
const ret = await this._handle.insert(this._table_name, this.cache);
resolve({result:ret, error: false});
return
}
// create a new table with the scheme provided in the cache
let r = await this._handle.create_table(t, this.cache);
resolve({result: r, error: false});
}
catch (e) {
return reject(__e(e));
}
});
}
/**
* Delete data from remote database
*
* @protected
* @param {any} user_data is table name, for delete table, otherwise, filter object for deleting records
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
protected _rm(user_data: any): Promise<RequestResult> {
return new Promise(async (resolve, reject) => {
try {
if(this._table_name && ! this.info.scheme)
{
throw new Error(__("Table `{0}` does not exists in database: {1}", this._table_name, this.path).__());
}
if(!this._table_name)
{
let table_name = user_data as string;
if (!table_name)
{
throw new Error(__("No table specified for dropping").__());
}
let ret = await this._handle.drop_table(table_name);
resolve({result: ret, error: false});
// delete the table
}
else
{
let filter = user_data as GenericObject<any>;
// delete the records in the table using the filter
if(!filter || this._id)
{
filter = {};
}
filter.table_name = this._table_name;
if(this._id)
{
filter.where = { id: this._id};
}
let ret = await this._handle.delete_records(filter);
resolve({result: ret, error: false});
}
} catch (e) {
return reject(__e(e));
}
});
}
}
register("^sqlite$", SqliteFileHandle);
}
}
}

14
SQLiteDB/README.md
View File

@ -1,15 +1,3 @@
# SQLiteDB
This is an example project, generated by AntOS Development Kit
## Howto
Use the Antedit command palette to access to the SDK functionalities:
1. Create new project
2. Init the project from the current folder located in side bar
3. Build and run the project
4. Release the project in zip package
## Set up build target
Open the `build.json` file from the current project tree and add/remove
build target entries and jobs. Save the file
"mimes":["application/vnd.sqlite3"],

197
SQLiteDB/api/api.lua
View File

@ -3,15 +3,15 @@ local args=...
-- require libs
local vfs = require("vfs")
local sqlite = modules.sqlite()
-- helper functions
local result = function(data)
return { error = false, result = data }
end
local error = function(msg)
return {error = msg, result = false}
local error = function(msg,...)
local err_msg = string.format(msg or "ERROR",...)
return {error = err_msg, result = false}
end
-- handler object
@ -21,49 +21,204 @@ local handle = {}
handle.init = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite._getdb(os_path)
local db = sqlite.db(os_path)
if not db then
return error("Unable to open sqlite db file")
return error("init: Unable to open sqlite db file")
end
sqlite.dbclose(db)
return result(true)
end
handle.query = function(data)
handle.update = function(data)
if not data.table_name or not data.record or not data.db_source then
return error("update: Invalid request data")
end
if not data.record.id then
return error("update: unknown record id for record")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite._getdb(os_path)
local db = sqlite.db(os_path)
if not db then
return error("Unable to open sqlite db file")
return error("update: Unable to open sqlite db file")
end
local ret = sqlite.query(db, data.query)
local tb = {}
local gen = SQLQueryGenerator:new({})
for k,v in pairs(data.record) do
if k ~= "id" then
table.insert(tb, string.format("%s=%s", k, gen:parse_value(v, {[type(v)] = true})))
end
end
local sql = string.format("UPDATE %s SET %s WHERE id = %d", data.table_name, table.concat(tb,","), data.record.id)
LOG_DEBUG("Execute query: [%s]", sql)
local ret, err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if ret ~= 1 then
return error("error executing query")
if not ret then
return error("insert: Unable to insert to %s: %s", data.table_name, err)
else
return result(ret)
end
end
handle.drop_table = function(data)
if not data.table_name or not data.db_source then
return error("drop_table: Invalid request data")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("drop_table: Unable to open sqlite db file")
end
local sql = string.format("DROP TABLE IF EXISTS %s;", data.table_name)
LOG_DEBUG("Execute query: [%s]", sql)
local ret, err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if not ret then
return error("drop_table: Unable to drop table %s: %s", data.table_name, err)
else
return result(ret)
end
end
handle.insert = function(data)
if not data.table_name or not data.record or not data.db_source then
return error("insert: Invalid request data")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("insert: Unable to open sqlite db file")
end
local keys = {}
local vals = {}
local gen = SQLQueryGenerator:new({})
for k,v in pairs(data.record) do
if k ~= "id" then
table.insert(keys,k)
table.insert(vals,gen:parse_value(v, {[type(v)] = true}))
end
end
local sql = string.format("INSERT INTO %s (%s) VALUES(%s)", data.table_name, table.concat(keys,","), table.concat(vals,","))
LOG_DEBUG("Execute query: [%s]", sql)
local ret, err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if not ret then
return error("insert: Unable to insert to %s: %s", data.table_name, err)
else
return result(ret)
end
end
handle.create_table = function(data)
if not data.table_name or not data.scheme or not data.db_source then
return error("create_table: Invalid request data")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("create_table: Unable to open sqlite db file")
end
local tb = {}
for k,v in pairs(data.scheme) do
table.insert(tb, k.." "..v)
end
local sql = string.format("CREATE TABLE IF NOT EXISTS %s(id INTEGER PRIMARY KEY,%s)", data.table_name, table.concat(tb,","))
LOG_DEBUG("Execute query: [%s]", sql)
local ret,err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if not ret then
return error("create_table: Unable to create table %s with the provided scheme: %s", data.table_name, err)
else
return result(ret)
end
return result(true)
end
handle.select = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite._getdb(os_path)
if not db then
return error("Unable to open sqlite db file")
if not data.filter then
return error("select: No filter provided")
end
local ret = sqlite.select(db, data.table, data.fields, data.cond);
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("select: Unable to open sqlite db file")
end
local generator = SQLQueryGenerator:new(data.filter)
local r,sql = generator:sql_select()
if not r then
return error(sql)
end
LOG_DEBUG("Execute query: %s", sql);
local ret, err = sqlite.query(db, sql);
sqlite.dbclose(db)
if not ret then
return error("error executing select statement")
return error("select: error executing query statement: %s ", err)
end
return result(ret)
end
handle.delete_records = function(data)
if not data.filter then
return error("delete_records: No filter provided")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("delete_records: Unable to open sqlite db file")
end
local generator = SQLQueryGenerator:new(data.filter)
local r,sql = generator:sql_delete()
if not r then
return error(sql)
end
LOG_DEBUG("Execute query: %s", sql);
local ret, err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if not ret then
return error("delete_records: error executing query statement: %s ", err)
end
return result(ret)
end
handle.table_scheme = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("table_scheme: Unable to open sqlite db file")
end
local sql = string.format("SELECT p.name, p.type FROM sqlite_master AS m JOIN pragma_table_info(m.name) AS p WHERE m.type ='table' AND m.name = '%s'", data.table_name)
local ret, err = sqlite.query(db, sql);
sqlite.dbclose(db)
if not ret then
return error("table_scheme: error executing query statement: %s", err)
end
return result(ret)
end
handle.list_table = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("list_table: Unable to open sqlite db file")
end
local sql = "SELECT name FROM sqlite_master WHERE type ='table'"
local ret, err = sqlite.query(db, sql)
sqlite.dbclose(db)
if not ret then
return error("table_scheme: error executing query statement: %s", err)
end
return result(ret)
end
handle.last_insert_id = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite._getdb(os_path)
local db = sqlite.db(os_path)
if not db then
return error("Unable to open sqlite db file")
return error("last_insert_id: Unable to open sqlite db file")
end
local ret = sqlite.lastInsertID(db)
local ret = sqlite.last_insert_id(db)
sqlite.dbclose(db)
return result(ret)
end

14
SQLiteDB/build/debug/README.md
View File

@ -1,15 +1,3 @@
# SQLiteDB
This is an example project, generated by AntOS Development Kit
## Howto
Use the Antedit command palette to access to the SDK functionalities:
1. Create new project
2. Init the project from the current folder located in side bar
3. Build and run the project
4. Release the project in zip package
## Set up build target
Open the `build.json` file from the current project tree and add/remove
build target entries and jobs. Save the file
"mimes":["application/vnd.sqlite3"],

197
SQLiteDB/build/debug/api/api.lua
View File

@ -3,15 +3,15 @@ local args=...
-- require libs
local vfs = require("vfs")
local sqlite = modules.sqlite()
-- helper functions
local result = function(data)
return { error = false, result = data }
end
local error = function(msg)
return {error = msg, result = false}
local error = function(msg,...)
local err_msg = string.format(msg or "ERROR",...)
return {error = err_msg, result = false}
end
-- handler object
@ -21,49 +21,204 @@ local handle = {}
handle.init = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite._getdb(os_path)
local db = sqlite.db(os_path)
if not db then
return error("Unable to open sqlite db file")
return error("init: Unable to open sqlite db file")
end
sqlite.dbclose(db)
return result(true)
end
handle.query = function(data)
handle.update = function(data)
if not data.table_name or not data.record or not data.db_source then
return error("update: Invalid request data")
end
if not data.record.id then
return error("update: unknown record id for record")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite._getdb(os_path)
local db = sqlite.db(os_path)
if not db then
return error("Unable to open sqlite db file")
return error("update: Unable to open sqlite db file")
end
local ret = sqlite.query(db, data.query)
local tb = {}
local gen = SQLQueryGenerator:new({})
for k,v in pairs(data.record) do
if k ~= "id" then
table.insert(tb, string.format("%s=%s", k, gen:parse_value(v, {[type(v)] = true})))
end
end
local sql = string.format("UPDATE %s SET %s WHERE id = %d", data.table_name, table.concat(tb,","), data.record.id)
LOG_DEBUG("Execute query: [%s]", sql)
local ret, err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if ret ~= 1 then
return error("error executing query")
if not ret then
return error("insert: Unable to insert to %s: %s", data.table_name, err)
else
return result(ret)
end
end
handle.drop_table = function(data)
if not data.table_name or not data.db_source then
return error("drop_table: Invalid request data")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("drop_table: Unable to open sqlite db file")
end
local sql = string.format("DROP TABLE IF EXISTS %s;", data.table_name)
LOG_DEBUG("Execute query: [%s]", sql)
local ret, err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if not ret then
return error("drop_table: Unable to drop table %s: %s", data.table_name, err)
else
return result(ret)
end
end
handle.insert = function(data)
if not data.table_name or not data.record or not data.db_source then
return error("insert: Invalid request data")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("insert: Unable to open sqlite db file")
end
local keys = {}
local vals = {}
local gen = SQLQueryGenerator:new({})
for k,v in pairs(data.record) do
if k ~= "id" then
table.insert(keys,k)
table.insert(vals,gen:parse_value(v, {[type(v)] = true}))
end
end
local sql = string.format("INSERT INTO %s (%s) VALUES(%s)", data.table_name, table.concat(keys,","), table.concat(vals,","))
LOG_DEBUG("Execute query: [%s]", sql)
local ret, err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if not ret then
return error("insert: Unable to insert to %s: %s", data.table_name, err)
else
return result(ret)
end
end
handle.create_table = function(data)
if not data.table_name or not data.scheme or not data.db_source then
return error("create_table: Invalid request data")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("create_table: Unable to open sqlite db file")
end
local tb = {}
for k,v in pairs(data.scheme) do
table.insert(tb, k.." "..v)
end
local sql = string.format("CREATE TABLE IF NOT EXISTS %s(id INTEGER PRIMARY KEY,%s)", data.table_name, table.concat(tb,","))
LOG_DEBUG("Execute query: [%s]", sql)
local ret,err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if not ret then
return error("create_table: Unable to create table %s with the provided scheme: %s", data.table_name, err)
else
return result(ret)
end
return result(true)
end
handle.select = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite._getdb(os_path)
if not db then
return error("Unable to open sqlite db file")
if not data.filter then
return error("select: No filter provided")
end
local ret = sqlite.select(db, data.table, data.fields, data.cond);
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("select: Unable to open sqlite db file")
end
local generator = SQLQueryGenerator:new(data.filter)
local r,sql = generator:sql_select()
if not r then
return error(sql)
end
LOG_DEBUG("Execute query: %s", sql);
local ret, err = sqlite.query(db, sql);
sqlite.dbclose(db)
if not ret then
return error("error executing select statement")
return error("select: error executing query statement: %s ", err)
end
return result(ret)
end
handle.delete_records = function(data)
if not data.filter then
return error("delete_records: No filter provided")
end
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("delete_records: Unable to open sqlite db file")
end
local generator = SQLQueryGenerator:new(data.filter)
local r,sql = generator:sql_delete()
if not r then
return error(sql)
end
LOG_DEBUG("Execute query: %s", sql);
local ret, err = sqlite.exec(db, sql);
sqlite.dbclose(db)
if not ret then
return error("delete_records: error executing query statement: %s ", err)
end
return result(ret)
end
handle.table_scheme = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("table_scheme: Unable to open sqlite db file")
end
local sql = string.format("SELECT p.name, p.type FROM sqlite_master AS m JOIN pragma_table_info(m.name) AS p WHERE m.type ='table' AND m.name = '%s'", data.table_name)
local ret, err = sqlite.query(db, sql);
sqlite.dbclose(db)
if not ret then
return error("table_scheme: error executing query statement: %s", err)
end
return result(ret)
end
handle.list_table = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite.db(os_path)
if not db then
return error("list_table: Unable to open sqlite db file")
end
local sql = "SELECT name FROM sqlite_master WHERE type ='table'"
local ret, err = sqlite.query(db, sql)
sqlite.dbclose(db)
if not ret then
return error("table_scheme: error executing query statement: %s", err)
end
return result(ret)
end
handle.last_insert_id = function(data)
local os_path = vfs.ospath(data.db_source)
local db = sqlite._getdb(os_path)
local db = sqlite.db(os_path)
if not db then
return error("Unable to open sqlite db file")
return error("last_insert_id: Unable to open sqlite db file")
end
local ret = sqlite.lastInsertID(db)
local ret = sqlite.last_insert_id(db)
sqlite.dbclose(db)
return result(ret)
end

518
SQLiteDB/build/debug/libsqlite.js
View File

@ -3,19 +3,238 @@ var OS;
(function (OS) {
let API;
(function (API) {
class SQLiteDBBase {
/**
* Generate SQL expression from input object
*
* Example of input object
* ```ts
* {
* where: {
* id$gte: 10,
* user: "dany'",
* $or: {
* 'user.email': "test@mail.com",
* age$lte: 30,
* $and: {
* 'user.birth$ne': 1986,
* age$not_between: [20,30],
* name$not_like: "%LE"
* }
* }
* },
* fields: ['name as n', 'id', 'email'],
* order: ['user.name$asc', "id$desc"],
* joins: {
* cid: 'Category.id',
* did: 'Country.id'
* }
*}
* ```
* This will generate the followings expressions:
* - `( self.name as n,self.id,self.email )` for fields
* - condition:
* ```
* (
* ( self.id >= 10 ) AND
* ( self.user = 'dany''' ) AND
* (
* ( user.email = 'test@mail.com' ) OR
* ( self.age <= 30 ) OR
* (
* ( user.birth != 1986 ) AND
* ( self.age NOT BETWEEN 20 AND 30 ) AND
* ( self.name NOT LIKE '%LE' )
* )
* )
* )
* ```
* - order: `user.name ASC,self.id DESC`
* - joining:
* ```
* INNER JOIN Category ON self.cid = Category.id
* INNER JOIN Country ON self.did = Country.id
* ```
*
*/
class SQLiteQueryGenerator {
constructor(obj) {
this._where = undefined;
this._fields = undefined;
this._order = undefined;
this._joins = undefined;
this._is_joining = false;
if (obj.joins) {
this._is_joining = true;
this._joins = this.joins(obj.joins);
}
if (obj.where) {
this._where = this.where("$and", obj.where);
}
if (obj.fields) {
this._fields = `( ${obj.fields.map(v => this.infer_field(v)).join(",")} )`;
}
if (obj.order) {
this._order = this.order_by(obj.order);
}
}
infer_field(k) {
if (!this._is_joining || k.indexOf(".") > 0)
return k;
return `self.${k}`;
}
joins(data) {
let joins_arr = [];
for (let k in data) {
let v = data[k];
let arr = v.split('.');
if (arr.length != 2) {
throw new Error(__("Other table name parsing error: {0}", v).__());
}
joins_arr.push(`INNER JOIN ${arr[0]} ON ${this.infer_field(k)} = ${v}`);
}
return joins_arr.join(" ");
}
print() {
console.log(this._fields);
console.log(this._where);
console.log(this._order);
console.log(this._joins);
}
order_by(order) {
if (!Array.isArray(order)) {
throw new Error(__("Invalid type: expect array get {0}", typeof (order)).__());
}
return order.map((v, _) => {
const arr = v.split('$');
if (arr.length != 2) {
throw new Error(__("Invalid field order format {0}", v).__());
}
switch (arr[1]) {
case 'asc': return `${this.infer_field(arr[0])} ASC`;
case 'desc': return `${this.infer_field(arr[0])} DESC`;
default: throw new Error(__("Invalid field order type {0}", v).__());
}
}).join(",");
}
escape_string(s) {
let regex = /[']/g;
var chunkIndex = regex.lastIndex = 0;
var escapedVal = '';
var match;
while ((match = regex.exec(s))) {
escapedVal += s.slice(chunkIndex, match.index) + { '\'': '\'\'' }[match[0]];
chunkIndex = regex.lastIndex;
}
if (chunkIndex === 0) {
// Nothing was escaped
return "'" + s + "'";
}
if (chunkIndex < s.length) {
return "'" + escapedVal + s.slice(chunkIndex) + "'";
}
return "'" + escapedVal + "'";
}
parse_value(v, t) {
if (!t.includes(typeof (v))) {
throw new Error(__("Invalid type: expect [{0}] get {1}", t.join(","), typeof (v)).__());
}
switch (typeof (v)) {
case 'number': return JSON.stringify(v);
case 'string': return this.escape_string(v);
default: throw new Error(__("Un supported value {0} of type {1}", v, typeof (v)).__());
}
}
binary(k, v) {
const arr = k.split("$");
if (arr.length > 2) {
throw new Error(__("Invalid left hand side format: {0}", k).__());
}
if (arr.length == 2) {
switch (arr[1]) {
case "gt":
return `( ${this.infer_field(arr[0])} > ${this.parse_value(v, ['number'])} )`;
case "gte":
return `( ${this.infer_field(arr[0])} >= ${this.parse_value(v, ['number'])} )`;
case "lt":
return `( ${this.infer_field(arr[0])} < ${this.parse_value(v, ['number'])} )`;
case "lte":
return `( ${this.infer_field(arr[0])} <= ${this.parse_value(v, ['number'])} )`;
case "ne":
return `( ${this.infer_field(arr[0])} != ${this.parse_value(v, ['number', 'string'])} )`;
case "between":
return `( ${this.infer_field(arr[0])} BETWEEN ${this.parse_value(v[0], ['number'])} AND ${this.parse_value(v[1], ['number'])} )`;
case "not_between":
return `( ${this.infer_field(arr[0])} NOT BETWEEN ${this.parse_value(v[0], ['number'])} AND ${this.parse_value(v[1], ['number'])} )`;
case "in":
return `( ${this.infer_field(arr[0])} IN [${this.parse_value(v[0], ['number'])}, ${this.parse_value(v[1], ['number'])}] )`;
case "not_in":
return `( ${this.infer_field(arr[0])} NOT IN [${this.parse_value(v[0], ['number'])}, ${this.parse_value(v[1], ['number'])}] )`;
case "like":
return `( ${this.infer_field(arr[0])} LIKE ${this.parse_value(v, ['string'])} )`;
case "not_like":
return `( ${this.infer_field(arr[0])} NOT LIKE ${this.parse_value(v, ['string'])} )`;
default: throw new Error(__("Unsupported operator `{0}`", arr[1]).__());
}
}
else {
return `( ${this.infer_field(arr[0])} = ${this.parse_value(v, ['number', 'string'])} )`;
}
}
where(op, obj) {
let join_op = undefined;
switch (op) {
case "$and":
join_op = " AND ";
break;
case "$or":
join_op = " OR ";
break;
default:
throw new Error(__("Invalid operator {0}", op).__());
}
if (typeof obj !== "object") {
throw new Error(__("Invalid input data for operator {0}", op).__());
}
let arr = [];
for (let k in obj) {
if (k == "$and" || k == "$or") {
arr.push(this.where(k, obj[k]));
}
else {
arr.push(this.binary(k, obj[k]));
}
}
return `( ${arr.join(join_op)} )`;
}
}
class SQLiteDBCore {
constructor(path) {
if (!SQLiteDBCore.REGISTY) {
SQLiteDBCore.REGISTY = {};
}
this.db_file = path.asFileHandle();
if (SQLiteDBCore.REGISTY[this.db_file.path]) {
this.db_file = SQLiteDBCore.REGISTY[this.db_file.path];
}
else {
SQLiteDBCore.REGISTY[this.db_file.path] = this.db_file;
}
}
pwd() {
return "pkg://SQLiteDB/".asFileHandle();
}
fileinfo() {
return this.db_file.info;
}
/**
* init and create the db file if it doesnot exist
* init and create the db file if it does not exist
*/
init() {
return new Promise(async (ok, reject) => {
try {
if (this.db_file.ready) {
return ok(true);
}
let request = {
action: 'init',
args: {
@ -64,36 +283,76 @@ var OS;
}
});
}
query(sql) {
select(filter) {
let rq = {
action: 'query',
action: 'select',
args: {
query: sql
filter
}
};
return this.request(rq);
}
select(table, fields, condition) {
delete_records(filter) {
let rq = {
action: 'select',
action: 'delete_records',
args: {
table: table,
fields: fields.join(","),
cond: condition
filter
}
};
return this.request(rq);
}
drop_table(table_name) {
let rq = {
action: 'drop_table',
args: { table_name }
};
return this.request(rq);
}
list_tables() {
return new Promise(async (ok, reject) => {
try {
let result = await this.select("sqlite_master", ["name"], "type ='table'");
return ok(result.map((e) => e.name));
let rq = {
action: 'list_table',
args: {}
};
return this.request(rq);
}
create_table(table, scheme) {
let rq = {
action: 'create_table',
args: {
table_name: table,
scheme
}
catch (e) {
reject(__e(e));
};
return this.request(rq);
}
get_table_scheme(table_name) {
let rq = {
action: 'table_scheme',
args: {
table_name
}
});
};
return this.request(rq);
}
insert(table_name, record) {
let rq = {
action: 'insert',
args: {
table_name,
record
}
};
return this.request(rq);
}
update(table_name, record) {
let rq = {
action: 'update',
args: {
table_name,
record
}
};
return this.request(rq);
}
last_insert_id() {
let rq = {
@ -103,6 +362,229 @@ var OS;
return this.request(rq);
}
}
API.SQLiteDBBase = SQLiteDBBase;
let VFS;
(function (VFS) {
/**
* SQLite VFS handle for database accessing
*
* A Sqlite file handle shall be in the following formats:
* * `sqlite://remote/path/to/file.db` refers to the entire databale (`remote/path/to/file.db` is relative to the home folder)
* - read operation, will list all available tables
* - write operations will create table
* - rm operation will delete table
* - meta operation will return file info
* - other operations are not supported
* * `sqlite://remote/path/to/file.db@table_name` refers to the table `table_name` in the database
* - meta operation will return fileinfo with table scheme information
* - read operation will read all records by filter defined by the filter operation
* - write operations will insert a new record
* - rm operation will delete records by filter defined by the filter operation
* - filter operation sets the filter for the table
* - other operations are not supported
* - `sqlite://remote/path/to/file.db@table_name@id` refers to a records in `table_name` with ID `id`
* - read operation will read the current record
* - write operation will update current record
* - rm operation will delete current record
* - other operations are not supported
*
* Some example of filters:
* ```ts
* handle.filter = (filter) => {
* filter.fields()
* }
* ```
*
* @class SqliteFileHandle
* @extends {BaseFileHandle}
*/
class SqliteFileHandle extends VFS.BaseFileHandle {
/**
* Set a file path to the current file handle
*
*
* @param {string} p
* @returns {void}
* @memberof SqliteFileHandle
*/
setPath(p) {
let arr = p.split("@");
super.setPath(arr[0]);
if (arr.length > 3) {
throw new Error(__("Invalid file path").__());
}
this.path = p;
this._table_name = arr[1];
this._id = arr[2] ? parseInt(arr[2]) : undefined;
this._handle = new SQLiteDBCore(`home://${this.genealogy.join("/")}`);
}
/**
* Read database file meta-data
*
* Return file info on the target database file, if the table_name is specified
* return also the table scheme
*
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
meta() {
return new Promise(async (resolve, reject) => {
try {
await this._handle.init();
const d = { result: this._handle.fileinfo(), error: false };
if (this._table_name) {
const data = await this._handle.get_table_scheme(this._table_name);
if (data.length == 0) {
d.result.scheme = undefined;
}
else {
d.result.scheme = {};
for (let v of data) {
d.result.scheme[v.name] = v.type;
}
}
}
return resolve(d);
}
catch (e) {
return reject(__e(e));
}
});
}
/**
* Query the database based on the provided info
*
* If no table is provided, return list of tables in the
* data base.
* If the current table is specified:
* - if the record id is specfied return the record
* - otherwise, return the records in the table using the specified filter
*
* @protected
* @param {any} t filter type
* @returns {Promise<any>}
* @memberof SqliteFileHandle
*/
_rd(user_data) {
return new Promise(async (resolve, reject) => {
try {
if (this._table_name && !this.info.scheme) {
throw new Error(__("Table `{0}` does not exists in database: {1}", this._table_name, this.path).__());
}
if (!this._table_name) {
// return list of tables in form of data base file handles in ready mode
let list = await this._handle.list_tables();
const map = {};
for (let v of list) {
map[v.name] = `${this.path}@${v.name}`.asFileHandle();
}
this.cache = map;
resolve(map);
}
else {
// return all the data in the table set by the filter
// if this is a table, return the filtered records
// otherwise, it is a record, fetch only that record
let filter = user_data;
if (!filter || this._id) {
filter = {};
}
filter.table_name = this._table_name;
if (this._id) {
filter.where = { id: this._id };
}
let data = await this._handle.select(filter);
if (this._id) {
this.cache = data[0];
}
else {
this.cache = data;
}
resolve(this.cache);
}
}
catch (e) {
return reject(__e(e));
}
});
}
/**
* Write commit file cache to the remote database
*
* @protected
* @param {string} t is table name, used only when create table
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
_wr(t) {
return new Promise(async (resolve, reject) => {
try {
if (!this.cache) {
throw new Error(__("No data to submit to remote database, please check the `cache` field").__());
}
if (this._id && this._table_name) {
this.cache.id = this._id;
const ret = await this._handle.update(this._table_name, this.cache);
resolve({ result: ret, error: false });
return;
}
if (this._table_name) {
const ret = await this._handle.insert(this._table_name, this.cache);
resolve({ result: ret, error: false });
return;
}
// create a new table with the scheme provided in the cache
let r = await this._handle.create_table(t, this.cache);
resolve({ result: r, error: false });
}
catch (e) {
return reject(__e(e));
}
});
}
/**
* Delete data from remote database
*
* @protected
* @param {any} user_data is table name, for delete table, otherwise, filter object for deleting records
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
_rm(user_data) {
return new Promise(async (resolve, reject) => {
try {
if (this._table_name && !this.info.scheme) {
throw new Error(__("Table `{0}` does not exists in database: {1}", this._table_name, this.path).__());
}
if (!this._table_name) {
let table_name = user_data;
if (!table_name) {
throw new Error(__("No table specified for dropping").__());
}
let ret = await this._handle.drop_table(table_name);
resolve({ result: ret, error: false });
// delete the table
}
else {
let filter = user_data;
// delete the records in the table using the filter
if (!filter || this._id) {
filter = {};
}
filter.table_name = this._table_name;
if (this._id) {
filter.where = { id: this._id };
}
let ret = await this._handle.delete_records(filter);
resolve({ result: ret, error: false });
}
}
catch (e) {
return reject(__e(e));
}
});
}
}
VFS.register("^sqlite$", SqliteFileHandle);
})(VFS = API.VFS || (API.VFS = {}));
})(API = OS.API || (OS.API = {}));
})(OS || (OS = {}));

717
SQLiteDB/build/debug/main.js
View File

@ -4,8 +4,6 @@ var OS;
(function (OS) {
let application;
(function (application) {
;
;
/**
*
* @class SQLiteDB
@ -15,19 +13,200 @@ var OS;
constructor(args) {
super("SQLiteDB", args);
}
main() {
// YOUR CODE HERE
let handle = new OS.API.SQLiteDBBase("home://tmp/test.db");
handle.list_tables().then((list) => {
console.log(list);
if (list.indexOf("contacts") < 0) {
handle.query("CREATE TABLE contacts (id INTEGER PRIMARY KEY,first_name TEXT NOT NULL,last_name TEXT NOT NULL,email TEXT NOT NULL UNIQUE,phone TEXT NOT NULL UNIQUE)");
menu() {
return [
{
text: "__(File)",
nodes: [
{
text: "__(New)",
dataid: "new",
shortcut: 'A-N'
},
{
text: "__(Open)",
dataid: "open",
shortcut: 'A-O'
},
],
onchildselect: (e) => {
switch (e.data.item.data.dataid) {
case "new":
return this.newFile();
case "open":
return this.openFile();
}
}
}
];
}
list_tables() {
this.filehandle.read()
.then((data) => {
const list = [];
for (let k in data) {
list.push({
text: k,
name: k,
handle: data[k]
});
}
this.tbl_list.data = list;
if (list.length > 0) {
this.tbl_list.selected = 0;
}
});
handle.last_insert_id().then(o => console.log(o));
}
openFile() {
return this.openDialog("FileDialog", {
title: __("Open file"),
mimes: this.meta().mimes
}).then(async (d) => {
this.filehandle = `sqlite://${d.file.path.asFileHandle().genealogy.join("/")}`.asFileHandle();
await this.filehandle.onready();
this.list_tables();
})
.catch((e) => {
this.error(__("Unable to open database file: {0}", e.toString()), e);
});
;
}
newFile() {
return this.openDialog("FileDialog", {
title: __("Save as"),
file: "Untitled.db"
}).then(async (f) => {
var d;
d = f.file.path.asFileHandle();
if (f.file.type === "file") {
d = d.parent();
}
const target = `${d.path}/${f.name}`.asFileHandle();
this.filehandle = `sqlite://${target.genealogy.join("/")}`.asFileHandle();
await this.filehandle.onready();
this.list_tables();
})
.catch((e) => {
this.error(__("Unable to init database file: {0}", e.toString()), e);
});
}
main() {
this.filehandle = undefined;
this.tbl_list = this.find("tbl-list");
this.find("bt-add-table").onbtclick = (e) => {
this.openDialog(new NewTableDialog(), {
title: __("Create new table")
});
};
}
}
application.SQLiteDB = SQLiteDB;
class NewTableDialog extends OS.GUI.BasicDialog {
/**
* Creates an instance of NewTableDialog.
* @memberof NewTableDialog
*/
constructor() {
super("NewTableDialog");
}
init() {
console.log(this.constructor.scheme);
}
/**
* Main entry point
*
* @memberof NewTableDialog
*/
main() {
super.main();
this.container = this.find("container");
this.find("btnCancel").onbtclick = (e) => this.quit();
this.find("btnAdd").onbtclick = (e) => this.addField("", "", true);
$(this.find("wrapper"));
$(this.container)
.css("overflow-y", "auto");
this.find("btnOk").onbtclick = (e) => {
const inputs = $("input", this.scheme);
let cdata = {};
for (let i = 0; i < inputs.length; i += 2) {
const key = inputs[i].value.trim();
if (key === "") {
return this.notify(__("Key cannot be empty"));
}
if (cdata[key]) {
return this.notify(__("Duplicate key: {0}", key));
}
cdata[key] = inputs[i + 1].value.trim();
}
if (this.handle)
this.handle(cdata);
this.quit();
};
}
/**
* Add new input key-value field to the dialog
*
* @private
* @memberof NewTableDialog
*/
addField(key, value, removable) {
const div = $("<div>")
.css("width", "100%")
.css("display", "flex")
.css("flex-direction", "row")
.appendTo(this.container);
$("<input>")
.attr("type", "text")
.css("width", "50%")
.css("height", "25px")
.val(key)
.appendTo(div);
$("<afx-list-view>")
.css("width", "50%")
.css("height", "25px")
.appendTo(div);
if (removable) {
const btn = $("<afx-button>");
btn[0].uify(undefined);
$("button", btn)
.css("width", "25px")
.css("height", "25px");
btn[0].iconclass = "fa fa-minus";
btn
.on("click", () => {
div.remove();
})
.appendTo(div);
}
else {
$("<div>")
.css("width", "25px")
.appendTo(div);
}
}
}
/**
* Scheme definition
*/
NewTableDialog.scheme = `\
<afx-app-window width='350' height='300'>
<afx-hbox>
<div data-width="10" ></div>
<afx-vbox>
<div data-height="5" ></div>
<afx-label text="__(Table layout)" data-height="30"></afx-label>
<div data-id="container"></div>
<afx-hbox data-height="30">
<afx-button data-id = "btnAdd" iconclass="fa fa-plus" data-width = "30" ></afx-button>
<div ></div>
<afx-button data-id = "btnOk" text = "__(Ok)" data-width = "40" ></afx-button>
<afx-button data-id = "btnCancel" text = "__(Cancel)" data-width = "50" ></afx-button>
</afx-hbox>
<div data-height="5" ></div>
</afx-vbox>
<div data-width="10" ></div>
</afx-hbox>
</afx-app-window>`;
})(application = OS.application || (OS.application = {}));
})(OS || (OS = {}));
@ -36,19 +215,238 @@ var OS;
(function (OS) {
let API;
(function (API) {
class SQLiteDBBase {
/**
* Generate SQL expression from input object
*
* Example of input object
* ```ts
* {
* where: {
* id$gte: 10,
* user: "dany'",
* $or: {
* 'user.email': "test@mail.com",
* age$lte: 30,
* $and: {
* 'user.birth$ne': 1986,
* age$not_between: [20,30],
* name$not_like: "%LE"
* }
* }
* },
* fields: ['name as n', 'id', 'email'],
* order: ['user.name$asc', "id$desc"],
* joins: {
* cid: 'Category.id',
* did: 'Country.id'
* }
*}
* ```
* This will generate the followings expressions:
* - `( self.name as n,self.id,self.email )` for fields
* - condition:
* ```
* (
* ( self.id >= 10 ) AND
* ( self.user = 'dany''' ) AND
* (
* ( user.email = 'test@mail.com' ) OR
* ( self.age <= 30 ) OR
* (
* ( user.birth != 1986 ) AND
* ( self.age NOT BETWEEN 20 AND 30 ) AND
* ( self.name NOT LIKE '%LE' )
* )
* )
* )
* ```
* - order: `user.name ASC,self.id DESC`
* - joining:
* ```
* INNER JOIN Category ON self.cid = Category.id
* INNER JOIN Country ON self.did = Country.id
* ```
*
*/
class SQLiteQueryGenerator {
constructor(obj) {
this._where = undefined;
this._fields = undefined;
this._order = undefined;
this._joins = undefined;
this._is_joining = false;
if (obj.joins) {
this._is_joining = true;
this._joins = this.joins(obj.joins);
}
if (obj.where) {
this._where = this.where("$and", obj.where);
}
if (obj.fields) {
this._fields = `( ${obj.fields.map(v => this.infer_field(v)).join(",")} )`;
}
if (obj.order) {
this._order = this.order_by(obj.order);
}
}
infer_field(k) {
if (!this._is_joining || k.indexOf(".") > 0)
return k;
return `self.${k}`;
}
joins(data) {
let joins_arr = [];
for (let k in data) {
let v = data[k];
let arr = v.split('.');
if (arr.length != 2) {
throw new Error(__("Other table name parsing error: {0}", v).__());
}
joins_arr.push(`INNER JOIN ${arr[0]} ON ${this.infer_field(k)} = ${v}`);
}
return joins_arr.join(" ");
}
print() {
console.log(this._fields);
console.log(this._where);
console.log(this._order);
console.log(this._joins);
}
order_by(order) {
if (!Array.isArray(order)) {
throw new Error(__("Invalid type: expect array get {0}", typeof (order)).__());
}
return order.map((v, _) => {
const arr = v.split('$');
if (arr.length != 2) {
throw new Error(__("Invalid field order format {0}", v).__());
}
switch (arr[1]) {
case 'asc': return `${this.infer_field(arr[0])} ASC`;
case 'desc': return `${this.infer_field(arr[0])} DESC`;
default: throw new Error(__("Invalid field order type {0}", v).__());
}
}).join(",");
}
escape_string(s) {
let regex = /[']/g;
var chunkIndex = regex.lastIndex = 0;
var escapedVal = '';
var match;
while ((match = regex.exec(s))) {
escapedVal += s.slice(chunkIndex, match.index) + { '\'': '\'\'' }[match[0]];
chunkIndex = regex.lastIndex;
}
if (chunkIndex === 0) {
// Nothing was escaped
return "'" + s + "'";
}
if (chunkIndex < s.length) {
return "'" + escapedVal + s.slice(chunkIndex) + "'";
}
return "'" + escapedVal + "'";
}
parse_value(v, t) {
if (!t.includes(typeof (v))) {
throw new Error(__("Invalid type: expect [{0}] get {1}", t.join(","), typeof (v)).__());
}
switch (typeof (v)) {
case 'number': return JSON.stringify(v);
case 'string': return this.escape_string(v);
default: throw new Error(__("Un supported value {0} of type {1}", v, typeof (v)).__());
}
}
binary(k, v) {
const arr = k.split("$");
if (arr.length > 2) {
throw new Error(__("Invalid left hand side format: {0}", k).__());
}
if (arr.length == 2) {
switch (arr[1]) {
case "gt":
return `( ${this.infer_field(arr[0])} > ${this.parse_value(v, ['number'])} )`;
case "gte":
return `( ${this.infer_field(arr[0])} >= ${this.parse_value(v, ['number'])} )`;
case "lt":
return `( ${this.infer_field(arr[0])} < ${this.parse_value(v, ['number'])} )`;
case "lte":
return `( ${this.infer_field(arr[0])} <= ${this.parse_value(v, ['number'])} )`;
case "ne":
return `( ${this.infer_field(arr[0])} != ${this.parse_value(v, ['number', 'string'])} )`;
case "between":
return `( ${this.infer_field(arr[0])} BETWEEN ${this.parse_value(v[0], ['number'])} AND ${this.parse_value(v[1], ['number'])} )`;
case "not_between":
return `( ${this.infer_field(arr[0])} NOT BETWEEN ${this.parse_value(v[0], ['number'])} AND ${this.parse_value(v[1], ['number'])} )`;
case "in":
return `( ${this.infer_field(arr[0])} IN [${this.parse_value(v[0], ['number'])}, ${this.parse_value(v[1], ['number'])}] )`;
case "not_in":
return `( ${this.infer_field(arr[0])} NOT IN [${this.parse_value(v[0], ['number'])}, ${this.parse_value(v[1], ['number'])}] )`;
case "like":
return `( ${this.infer_field(arr[0])} LIKE ${this.parse_value(v, ['string'])} )`;
case "not_like":
return `( ${this.infer_field(arr[0])} NOT LIKE ${this.parse_value(v, ['string'])} )`;
default: throw new Error(__("Unsupported operator `{0}`", arr[1]).__());
}
}
else {
return `( ${this.infer_field(arr[0])} = ${this.parse_value(v, ['number', 'string'])} )`;
}
}
where(op, obj) {
let join_op = undefined;
switch (op) {
case "$and":
join_op = " AND ";
break;
case "$or":
join_op = " OR ";
break;
default:
throw new Error(__("Invalid operator {0}", op).__());
}
if (typeof obj !== "object") {
throw new Error(__("Invalid input data for operator {0}", op).__());
}
let arr = [];
for (let k in obj) {
if (k == "$and" || k == "$or") {
arr.push(this.where(k, obj[k]));
}
else {
arr.push(this.binary(k, obj[k]));
}
}
return `( ${arr.join(join_op)} )`;
}
}
class SQLiteDBCore {
constructor(path) {
if (!SQLiteDBCore.REGISTY) {
SQLiteDBCore.REGISTY = {};
}
this.db_file = path.asFileHandle();
if (SQLiteDBCore.REGISTY[this.db_file.path]) {
this.db_file = SQLiteDBCore.REGISTY[this.db_file.path];
}
else {
SQLiteDBCore.REGISTY[this.db_file.path] = this.db_file;
}
}
pwd() {
return "pkg://SQLiteDB/".asFileHandle();
}
fileinfo() {
return this.db_file.info;
}
/**
* init and create the db file if it doesnot exist
* init and create the db file if it does not exist
*/
init() {
return new Promise(async (ok, reject) => {
try {
if (this.db_file.ready) {
return ok(true);
}
let request = {
action: 'init',
args: {
@ -97,36 +495,76 @@ var OS;
}
});
}
query(sql) {
select(filter) {
let rq = {
action: 'query',
action: 'select',
args: {
query: sql
filter
}
};
return this.request(rq);
}
select(table, fields, condition) {
delete_records(filter) {
let rq = {
action: 'select',
action: 'delete_records',
args: {
table: table,
fields: fields.join(","),
cond: condition
filter
}
};
return this.request(rq);
}
drop_table(table_name) {
let rq = {
action: 'drop_table',
args: { table_name }
};
return this.request(rq);
}
list_tables() {
return new Promise(async (ok, reject) => {
try {
let result = await this.select("sqlite_master", ["name"], "type ='table'");
return ok(result.map((e) => e.name));
let rq = {
action: 'list_table',
args: {}
};
return this.request(rq);
}
create_table(table, scheme) {
let rq = {
action: 'create_table',
args: {
table_name: table,
scheme
}
catch (e) {
reject(__e(e));
};
return this.request(rq);
}
get_table_scheme(table_name) {
let rq = {
action: 'table_scheme',
args: {
table_name
}
});
};
return this.request(rq);
}
insert(table_name, record) {
let rq = {
action: 'insert',
args: {
table_name,
record
}
};
return this.request(rq);
}
update(table_name, record) {
let rq = {
action: 'update',
args: {
table_name,
record
}
};
return this.request(rq);
}
last_insert_id() {
let rq = {
@ -136,6 +574,229 @@ var OS;
return this.request(rq);
}
}
API.SQLiteDBBase = SQLiteDBBase;
let VFS;
(function (VFS) {
/**
* SQLite VFS handle for database accessing
*
* A Sqlite file handle shall be in the following formats:
* * `sqlite://remote/path/to/file.db` refers to the entire databale (`remote/path/to/file.db` is relative to the home folder)
* - read operation, will list all available tables
* - write operations will create table
* - rm operation will delete table
* - meta operation will return file info
* - other operations are not supported
* * `sqlite://remote/path/to/file.db@table_name` refers to the table `table_name` in the database
* - meta operation will return fileinfo with table scheme information
* - read operation will read all records by filter defined by the filter operation
* - write operations will insert a new record
* - rm operation will delete records by filter defined by the filter operation
* - filter operation sets the filter for the table
* - other operations are not supported
* - `sqlite://remote/path/to/file.db@table_name@id` refers to a records in `table_name` with ID `id`
* - read operation will read the current record
* - write operation will update current record
* - rm operation will delete current record
* - other operations are not supported
*
* Some example of filters:
* ```ts
* handle.filter = (filter) => {
* filter.fields()
* }
* ```
*
* @class SqliteFileHandle
* @extends {BaseFileHandle}
*/
class SqliteFileHandle extends VFS.BaseFileHandle {
/**
* Set a file path to the current file handle
*
*
* @param {string} p
* @returns {void}
* @memberof SqliteFileHandle
*/
setPath(p) {
let arr = p.split("@");
super.setPath(arr[0]);
if (arr.length > 3) {
throw new Error(__("Invalid file path").__());
}
this.path = p;
this._table_name = arr[1];
this._id = arr[2] ? parseInt(arr[2]) : undefined;
this._handle = new SQLiteDBCore(`home://${this.genealogy.join("/")}`);
}
/**
* Read database file meta-data
*
* Return file info on the target database file, if the table_name is specified
* return also the table scheme
*
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
meta() {
return new Promise(async (resolve, reject) => {
try {
await this._handle.init();
const d = { result: this._handle.fileinfo(), error: false };
if (this._table_name) {
const data = await this._handle.get_table_scheme(this._table_name);
if (data.length == 0) {
d.result.scheme = undefined;
}
else {
d.result.scheme = {};
for (let v of data) {
d.result.scheme[v.name] = v.type;
}
}
}
return resolve(d);
}
catch (e) {
return reject(__e(e));
}
});
}
/**
* Query the database based on the provided info
*
* If no table is provided, return list of tables in the
* data base.
* If the current table is specified:
* - if the record id is specfied return the record
* - otherwise, return the records in the table using the specified filter
*
* @protected
* @param {any} t filter type
* @returns {Promise<any>}
* @memberof SqliteFileHandle
*/
_rd(user_data) {
return new Promise(async (resolve, reject) => {
try {
if (this._table_name && !this.info.scheme) {
throw new Error(__("Table `{0}` does not exists in database: {1}", this._table_name, this.path).__());
}
if (!this._table_name) {
// return list of tables in form of data base file handles in ready mode
let list = await this._handle.list_tables();
const map = {};
for (let v of list) {
map[v.name] = `${this.path}@${v.name}`.asFileHandle();
}
this.cache = map;
resolve(map);
}
else {
// return all the data in the table set by the filter
// if this is a table, return the filtered records
// otherwise, it is a record, fetch only that record
let filter = user_data;
if (!filter || this._id) {
filter = {};
}
filter.table_name = this._table_name;
if (this._id) {
filter.where = { id: this._id };
}
let data = await this._handle.select(filter);
if (this._id) {
this.cache = data[0];
}
else {
this.cache = data;
}
resolve(this.cache);
}
}
catch (e) {
return reject(__e(e));
}
});
}
/**
* Write commit file cache to the remote database
*
* @protected
* @param {string} t is table name, used only when create table
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
_wr(t) {
return new Promise(async (resolve, reject) => {
try {
if (!this.cache) {
throw new Error(__("No data to submit to remote database, please check the `cache` field").__());
}
if (this._id && this._table_name) {
this.cache.id = this._id;
const ret = await this._handle.update(this._table_name, this.cache);
resolve({ result: ret, error: false });
return;
}
if (this._table_name) {
const ret = await this._handle.insert(this._table_name, this.cache);
resolve({ result: ret, error: false });
return;
}
// create a new table with the scheme provided in the cache
let r = await this._handle.create_table(t, this.cache);
resolve({ result: r, error: false });
}
catch (e) {
return reject(__e(e));
}
});
}
/**
* Delete data from remote database
*
* @protected
* @param {any} user_data is table name, for delete table, otherwise, filter object for deleting records
* @returns {Promise<RequestResult>}
* @memberof SqliteFileHandle
*/
_rm(user_data) {
return new Promise(async (resolve, reject) => {
try {
if (this._table_name && !this.info.scheme) {
throw new Error(__("Table `{0}` does not exists in database: {1}", this._table_name, this.path).__());
}
if (!this._table_name) {
let table_name = user_data;
if (!table_name) {
throw new Error(__("No table specified for dropping").__());
}
let ret = await this._handle.drop_table(table_name);
resolve({ result: ret, error: false });
// delete the table
}
else {
let filter = user_data;
// delete the records in the table using the filter
if (!filter || this._id) {
filter = {};
}
filter.table_name = this._table_name;
if (this._id) {
filter.where = { id: this._id };
}
let ret = await this._handle.delete_records(filter);
resolve({ result: ret, error: false });
}
}
catch (e) {
return reject(__e(e));
}
});
}
}
VFS.register("^sqlite$", SqliteFileHandle);
})(VFS = API.VFS || (API.VFS = {}));
})(API = OS.API || (OS.API = {}));
})(OS || (OS = {}));

8
SQLiteDB/build/debug/package.json
View File

@ -1,16 +1,16 @@
{
"pkgname": "SQLiteDB",
"app":"SQLiteDB",
"name":"SQLiteDB",
"description":"SQLiteDB",
"name":"SQLite3 VFS API",
"description":"API for manipulate SQLite database as VFS handle",
"info":{
"author": "",
"email": ""
},
"version":"0.0.1-a",
"version":"0.1.0-a",
"category":"Other",
"iconclass":"fa fa-adn",
"mimes":["none"],
"mimes":[".*"],
"dependencies":[],
"locale": {}
}

20
SQLiteDB/build/debug/scheme.html
View File

@ -1,3 +1,19 @@
<afx-app-window apptitle="SQLiteDB" width="500" height="400" data-id="SQLiteDB">
<afx-hbox ></afx-hbox>
<afx-app-window apptitle="SQLite browser" width="600" height="500" data-id="SQLiteDB">
<afx-vbox>
<afx-hbox data-height="35">
<afx-button data-id = "bt-add-table" iconclass = "bi bi-plus-lg" data-width="content"></afx-button>
<afx-list-view dropdown = "true" data-id="tbl-list"></afx-list-view>
</afx-hbox>
<afx-tab-container data-id = "container" dir = "column" tabbarheight= "40">
<afx-hbox tabname="__(Struture)" iconclass = "bi bi-layout-wtf" >
<afx-grid-view></afx-grid-view>
</afx-hbox>
<afx-hbox tabname = "__(Browse data)" iconclass = "bi bi-table">
<afx-grid-view></afx-grid-view>
</afx-hbox>
</afx-tab-container>
</afx-vbox>
</afx-app-window>

228
SQLiteDB/main.ts
View File

@ -1,34 +1,230 @@
namespace OS {
export namespace application {
interface SQLiteDBBaseConstructor{
new(pqth: API.VFS.BaseFileHandle| string): SQLiteDBBase;
};
interface SQLiteDBBase{
list_tables(): Promise<Array<string>>,
last_insert_id(): Promise<number>,
query(sql): Promise<any>
};
/**
*
* @class SQLiteDB
* @extends {BaseApplication}
*/
export class SQLiteDB extends BaseApplication {
private filehandle: API.VFS.BaseFileHandle;
private tbl_list: GUI.tag.ListViewTag;
constructor(args: AppArgumentsType[]) {
super("SQLiteDB", args);
}
main(): void {
// YOUR CODE HERE
let handle = new ((OS.API as any).SQLiteDBBase as SQLiteDBBaseConstructor)("home://tmp/test.db");
handle.list_tables().then((list) => {
console.log(list);
if(list.indexOf("contacts") < 0)
menu() {
return [
{
handle.query("CREATE TABLE contacts (id INTEGER PRIMARY KEY,first_name TEXT NOT NULL,last_name TEXT NOT NULL,email TEXT NOT NULL UNIQUE,phone TEXT NOT NULL UNIQUE)");
text: "__(File)",
nodes: [
{
text: "__(New)",
dataid: "new",
shortcut: 'A-N'
},
{
text: "__(Open)",
dataid: "open",
shortcut: 'A-O'
},
],
onchildselect: (e) => {
switch (e.data.item.data.dataid) {
case "new":
return this.newFile();
case "open":
return this.openFile();
}
}
}
];
}
private list_tables()
{
this.filehandle.read()
.then((data) => {
const list = [];
for(let k in data)
{
list.push({
text: k,
name: k,
handle: data[k]
});
}
this.tbl_list.data = list;
if(list.length > 0)
{
this.tbl_list.selected = 0;
}
})
}
private openFile() {
return this.openDialog("FileDialog", {
title: __("Open file"),
mimes: this.meta().mimes
}).then(async (d) => {
this.filehandle = `sqlite://${d.file.path.asFileHandle().genealogy.join("/")}`.asFileHandle();
await this.filehandle.onready();
this.list_tables();
})
.catch((e) => {
this.error(__("Unable to open database file: {0}", e.toString()), e);
});;
}
private newFile() {
return this.openDialog("FileDialog", {
title: __("Save as"),
file: "Untitled.db"
}).then(async (f) => {
var d;
d = f.file.path.asFileHandle();
if (f.file.type === "file") {
d = d.parent();
}
const target = `${d.path}/${f.name}`.asFileHandle();
this.filehandle = `sqlite://${target.genealogy.join("/")}`.asFileHandle();
await this.filehandle.onready();
this.list_tables();
})
.catch((e) => {
this.error(__("Unable to init database file: {0}", e.toString()), e);
});
handle.last_insert_id().then(o => console.log(o));
}
main(): void {
this.filehandle = undefined;
this.tbl_list = this.find("tbl-list") as GUI.tag.ListViewTag;
(this.find("bt-add-table") as GUI.tag.ButtonTag).onbtclick = (e) => {
this.openDialog(new NewTableDialog(), {
title: __("Create new table")
});
}
}
}
class NewTableDialog extends GUI.BasicDialog {
/**
* Reference to the form container
*
* @private
* @type {HTMLDivElement}
* @memberof NewTableDialog
*/
private container: HTMLDivElement;
/**
* Creates an instance of NewTableDialog.
* @memberof NewTableDialog
*/
constructor() {
super("NewTableDialog");
}
/**
* Main entry point
*
* @memberof NewTableDialog
*/
main(): void {
super.main();
this.container = this.find("container") as HTMLDivElement;
(this.find("btnCancel") as GUI.tag.ButtonTag).onbtclick = (e) => this.quit();
(this.find("btnAdd") as GUI.tag.ButtonTag).onbtclick = (e) => this.addField("", "", true);
$(this.find("wrapper"))
$(this.container)
.css("overflow-y", "auto");
(this.find("btnOk") as GUI.tag.ButtonTag).onbtclick = (e) => {
const inputs = $("input", this.scheme) as JQuery<HTMLInputElement>;
let cdata: GenericObject<string> = {};
for (let i = 0; i < inputs.length; i += 2) {
const key = inputs[i].value.trim();
if (key === "") {
return this.notify(__("Key cannot be empty"));
}
if (cdata[key]) {
return this.notify(__("Duplicate key: {0}", key));
}
cdata[key] = inputs[i + 1].value.trim();
}
if (this.handle)
this.handle(cdata);
this.quit();
}
}
/**
* Add new input key-value field to the dialog
*
* @private
* @memberof NewTableDialog
*/
private addField(key: string, value: string, removable: boolean): void {
const div = $("<div>")
.css("width", "100%")
.css("display", "flex")
.css("flex-direction", "row")
.appendTo(this.container);
$("<input>")
.attr("type", "text")
.css("width", "50%")
.css("height", "25px")
.val(key)
.appendTo(div);
$("<afx-list-view>")
.css("width", "50%")
.css("height", "25px")
.appendTo(div);
if (removable) {
const btn = $("<afx-button>");
btn[0].uify(undefined);
$("button", btn)
.css("width", "25px")
.css("height", "25px");
(btn[0] as GUI.tag.ButtonTag).iconclass = "fa fa-minus";
btn
.on("click", () => {
div.remove();
})
.appendTo(div);
}
else {
$("<div>")
.css("width", "25px")
.appendTo(div);
}
}
}
/**
* Scheme definition
*/
NewTableDialog.scheme = `\
<afx-app-window width='350' height='300'>
<afx-hbox>
<div data-width="10" ></div>
<afx-vbox>
<div data-height="5" ></div>
<afx-label text="__(Table layout)" data-height="30"></afx-label>
<div data-id="container"></div>
<afx-hbox data-height="30">
<afx-button data-id = "btnAdd" iconclass="fa fa-plus" data-width = "30" ></afx-button>
<div ></div>
<afx-button data-id = "btnOk" text = "__(Ok)" data-width = "40" ></afx-button>
<afx-button data-id = "btnCancel" text = "__(Cancel)" data-width = "50" ></afx-button>
</afx-hbox>
<div data-height="5" ></div>
</afx-vbox>
<div data-width="10" ></div>
</afx-hbox>
</afx-app-window>`;
}
}

8
SQLiteDB/package.json
View File

@ -1,16 +1,16 @@
{
"pkgname": "SQLiteDB",
"app":"SQLiteDB",
"name":"SQLiteDB",
"description":"SQLiteDB",
"name":"SQLite3 VFS API",
"description":"API for manipulate SQLite database as VFS handle",
"info":{
"author": "",
"email": ""
},
"version":"0.0.1-a",
"version":"0.1.0-a",
"category":"Other",
"iconclass":"fa fa-adn",
"mimes":["none"],
"mimes":[".*"],
"dependencies":[],
"locale": {}
}

20
SQLiteDB/scheme.html
View File

@ -1,3 +1,19 @@
<afx-app-window apptitle="SQLiteDB" width="500" height="400" data-id="SQLiteDB">
<afx-hbox ></afx-hbox>
<afx-app-window apptitle="SQLite browser" width="600" height="500" data-id="SQLiteDB">
<afx-vbox>
<afx-hbox data-height="35">
<afx-button data-id = "bt-add-table" iconclass = "bi bi-plus-lg" data-width="content"></afx-button>
<afx-list-view dropdown = "true" data-id="tbl-list"></afx-list-view>
</afx-hbox>
<afx-tab-container data-id = "container" dir = "column" tabbarheight= "40">
<afx-hbox tabname="__(Struture)" iconclass = "bi bi-layout-wtf" >
<afx-grid-view></afx-grid-view>
</afx-hbox>
<afx-hbox tabname = "__(Browse data)" iconclass = "bi bi-table">
<afx-grid-view></afx-grid-view>
</afx-hbox>
</afx-tab-container>
</afx-vbox>
</afx-app-window>