n0m/PawSQLite
n0m/PawSQLite
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PawSQLite/lib/PawSQLite.js
Ben Ashton 4e9f5b2512 New CommonJS Build
2021-03-01 22:58:18 -08:00

566 lines
16 KiB
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module.exports =
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/******/ ({
/***/ "./src/database.mjs":
/*!**************************!*\
!*** ./src/database.mjs ***!
\**************************/
/*! exports provided: Database */
/***/ (function(__webpack_module__, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Database", function() { return Database; });
/* harmony import */ var _transaction_manager_mjs__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./transaction_manager.mjs */ "./src/transaction_manager.mjs");
class Database {
constructor(dbName, adapter) {
this.dbName = dbName;
this.adapter = adapter;
this.version = null;
this.path = null;
this.transactionManager = new _transaction_manager_mjs__WEBPACK_IMPORTED_MODULE_0__["TransactionManager"](dbName, this.adapter);
}
async open() {
let response = await this.adapter.open(this.dbName);
if (response) {
if (response.hasOwnProperty('version')) {
this.version = response.version;
}
if (response.hasOwnProperty('path')) {
this.path = response.path;
}
}
// Allow chaining
return this;
}
close() {
return this.adapter.close(this.dbName);
}
transaction() {
return this.transactionManager.transaction();
}
async autoTransaction(cb, inheritTx) {
let tx = inheritTx || this.transaction();
let result;
try {
result = await cb(tx);
} catch (e) {
if (!inheritTx) {
await tx.rollback();
}
throw e;
}
if (!inheritTx) {
await tx.commit();
}
return result;
}
// Helper method to start a transaction and execute a single SQL statement
sql(sql, ...args) {
return this.autoTransaction((tx) => tx.sql(sql, ...args));
}
}
/***/ }),
/***/ "./src/log.mjs":
/*!*********************!*\
!*** ./src/log.mjs ***!
\*********************/
/*! exports provided: log, enableDebug */
/***/ (function(__webpack_module__, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "log", function() { return log; });
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "enableDebug", function() { return enableDebug; });
let DEBUG = false;
function log(...args) {
if (DEBUG) {
console.log(...args);
}
}
function enableDebug(active) {
DEBUG = !!active;
log("PawSQLite: debugging " + (DEBUG ? "enabled" : "disabled"));
}
/***/ }),
/***/ "./src/pawsqlite.mjs":
/*!***************************!*\
!*** ./src/pawsqlite.mjs ***!
\***************************/
/*! exports provided: default */
/***/ (function(__webpack_module__, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony import */ var _database_mjs__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./database.mjs */ "./src/database.mjs");
/* harmony import */ var _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./pawsqlite_error.mjs */ "./src/pawsqlite_error.mjs");
/* harmony import */ var _log_mjs__WEBPACK_IMPORTED_MODULE_2__ = __webpack_require__(/*! ./log.mjs */ "./src/log.mjs");
const adapters = [];
/* harmony default export */ __webpack_exports__["default"] = ({
open: async function(dbName, options = {}) {
const adapter = getAdapter(options.adapter);
let db = new _database_mjs__WEBPACK_IMPORTED_MODULE_0__["Database"](dbName, adapter);
await db.open();
return db;
},
delete: function(dbName, options = {}) {
const adapter = getAdapter(options.adapter);
return adapter.delete(dbName);
},
registerAdapter: function(adapter) {
adapters.push(wrapAdapter(adapter));
},
debug: _log_mjs__WEBPACK_IMPORTED_MODULE_2__["enableDebug"],
Error: _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"]
});
function wrapAdapter() {
const wrapped = {};
["name", "open", "close", "delete", "sql"].forEach((prop) => {
if (!(prop in adapter)) {
throw new _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"](`Invalid adapter: missing property: ${ prop }`);
}
if (
prop === "name" && !(
typeof adapter[prop] === "string" ||
adapter[prop] instanceof String
) ||
prop !== "name" && (
typeof adapter[prop] !== "function"
)
) {
throw new _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"]("Invalid adapter: invalid type for property: " +
prop);
}
if (typeof adapter[prop] === "function") {
wrapped[prop] = async (...args) => {
try {
return await adapter[prop](...args);
} catch (err) {
throw _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"].from(err);
}
};
} else {
wrapped[prop] = adapter[prop];
}
});
return wrapped;
}
function getAdapter(adapterName) {
const adapter = adapters.find((a) => a.name === adapterName);
if (!adapter) {
throw new _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"](`Unknown Adapter: ${adapterName}`);
}
return adapter;
}
/***/ }),
/***/ "./src/pawsqlite_error.mjs":
/*!*********************************!*\
!*** ./src/pawsqlite_error.mjs ***!
\*********************************/
/*! exports provided: PawSQLiteError */
/***/ (function(__webpack_module__, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "PawSQLiteError", function() { return PawSQLiteError; });
class PawSQLiteError extends Error {
static from(err) {
const p_err = new PawSQLiteError(err.toString());
p_err.cause = err;
return p_err;
}
constructor(message) {
super(message);
this.name = "PawSQLiteError";
}
}
/***/ }),
/***/ "./src/result.mjs":
/*!************************!*\
!*** ./src/result.mjs ***!
\************************/
/*! exports provided: Result */
/***/ (function(__webpack_module__, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Result", function() { return Result; });
/* harmony import */ var _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./pawsqlite_error.mjs */ "./src/pawsqlite_error.mjs");
class Result extends Array {
constructor(result) {
if (result.hasOwnProperty("rows")) {
super(...result.rows);
} else {
super();
}
if (result.hasOwnProperty("insertId")) {
this.insertId = result.insertId;
}
if (result.hasOwnProperty("rowsAffected")) {
this.rowsAffected = result.rowsAffected;
}
}
}
/***/ }),
/***/ "./src/transaction.mjs":
/*!*****************************!*\
!*** ./src/transaction.mjs ***!
\*****************************/
/*! exports provided: Transaction */
/***/ (function(__webpack_module__, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "Transaction", function() { return Transaction; });
/* harmony import */ var _result_mjs__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./result.mjs */ "./src/result.mjs");
/* harmony import */ var _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__ = __webpack_require__(/*! ./pawsqlite_error.mjs */ "./src/pawsqlite_error.mjs");
class Transaction {
constructor(dbName, adapter, enqueue, rollbackOnError=false) {
this.dbName = dbName;
this.adapter = adapter;
this._rollbackOnError = rollbackOnError;
this._enqueue = enqueue;
this._completeCb = null;
this._readyWait = null;
this._ready = false;
this._finalized = false;
}
async sql(sql, ...args) {
if (this._finalized) {
throw new _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"]("Transaction has already completed");
}
if (!this._ready) {
await this._waitUntilReady();
}
try {
return await this._executeSQL(sql, ...args);
} catch (e) {
if (this._rollbackOnError) {
await this.rollback();
}
throw e;
}
}
// Allow for slightly more complex parameter substitution.
// Instances of "???" will be replaced by the same number of comma-separated
// question marks as items in the corresponding nested parateter array
// eg. buildQuery("SELECT (???) FROM ?", [["col1", "col2"], "table1"])
// would output: ["SELECT (?, ?) FROM ?", ["col1", "col2", "table1"]]
buildQuery(sql, ...args) {
const parts = sql.split("???");
const subParamLengths = args
.filter(Array.isArray)
.map((a) => a.length);
if (parts.length !== subParamLengths.length + 1) {
throw new _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"]("Unable to build query: sub-" +
"paramters do not match sub-paramters in query");
}
const newQuery = parts.reduce((p1, p2, i) => {
const length = subParamLengths[i - 1];
return p1 + new Array(length).fill("?").join(", ") + p2;
});
const flatParams = args.reduce((acc, v) => {
if (Array.isArray(v)) {
Array.prototype.push.apply(acc, v);
} else {
acc.push(v);
}
return acc;
}, []);
return [newQuery, ...flatParams];
}
commit() {
return this._complete("COMMIT");
}
rollback() {
return this._complete("ROLLBACK");
}
async _waitUntilReady() {
if (!this._readyWait) {
this._readyWait = (async () => {
this._completeCb = await this._enqueue();
await this._begin();
this._ready = true;
})();
}
await this._readyWait;
}
async _executeSQL(sql, ...args) {
const reg = /^\s*(BEGIN|END|COMMIT|ROLLBACK)(?:[^A-Z]|$)/i;
const match = reg.exec(sql);
if (match) {
const statement = match[1].toUpperCase();
throw new _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"]("Manually managing transactions is " +
"forbidden. Found: \"" + statement + "\" statement.");
}
const result = await this.adapter.sql(this.dbName,
...this.buildQuery(sql, ...args));
return new _result_mjs__WEBPACK_IMPORTED_MODULE_0__["Result"](result);
}
async _begin() {
const result = await this.adapter.sql(this.dbName, "BEGIN");
}
async _complete(sql) {
if (this._finalized) {
throw new _pawsqlite_error_mjs__WEBPACK_IMPORTED_MODULE_1__["PawSQLiteError"]("Transaction has already completed");
}
this._finalized = true;
if (!this._readyWait) {
// Transaction was unused
return;
} else if (!this._ready) {
await this._waitUntilReady();
}
let result;
let error;
try {
result = await this.adapter.sql(this.dbName, sql);
} catch (e) {
error = e;
}
this._completeCb();
if (error) {
throw error;
}
return new _result_mjs__WEBPACK_IMPORTED_MODULE_0__["Result"](result);
}
}
/***/ }),
/***/ "./src/transaction_manager.mjs":
/*!*************************************!*\
!*** ./src/transaction_manager.mjs ***!
\*************************************/
/*! exports provided: TransactionManager */
/***/ (function(__webpack_module__, __webpack_exports__, __webpack_require__) {
"use strict";
__webpack_require__.r(__webpack_exports__);
/* harmony export (binding) */ __webpack_require__.d(__webpack_exports__, "TransactionManager", function() { return TransactionManager; });
/* harmony import */ var _transaction_mjs__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(/*! ./transaction.mjs */ "./src/transaction.mjs");
class TransactionManager {
constructor(dbName, adapter) {
this.dbName = dbName;
this.adapter = adapter;
this._queue = [];
this._inTransaction = false;
}
transaction() {
return new _transaction_mjs__WEBPACK_IMPORTED_MODULE_0__["Transaction"](this.dbName, this.adapter,
this.enqueue.bind(this));
}
enqueue() {
let completeSignal;
let transactionComplete = new Promise((r, _) => {
completeSignal = r;
});
let readySignal;
let dbReady = new Promise((r, _) => {
readySignal = () => {
r(completeSignal);
};
});
this._queue.push({readySignal, transactionComplete});
this._processQueue();
return dbReady;
}
async _processQueue() {
// We're already processing the queue
if (this._inTransaction) {
return;
}
while (true) {
let item = this._queue.shift();
if (!item) {
return;
}
this._inTransaction = true;
item.readySignal();
await item.transactionComplete;
this._inTransaction = false;
}
}
}
/***/ })
/******/ })["default"];
//# sourceMappingURL=PawSQLite.js.map
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