sequelize
Version:
Sequelize is a promise-based Node.js ORM tool for Postgres, MySQL, MariaDB, SQLite, Microsoft SQL Server, Amazon Redshift and Snowflake’s Data Cloud. It features solid transaction support, relations, eager and lazy loading, read replication and more.
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JavaScript
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var __defProp = Object.defineProperty;
var __defProps = Object.defineProperties;
var __getOwnPropDescs = Object.getOwnPropertyDescriptors;
var __getOwnPropSymbols = Object.getOwnPropertySymbols;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __propIsEnum = Object.prototype.propertyIsEnumerable;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __spreadValues = (a, b) => {
for (var prop in b || (b = {}))
if (__hasOwnProp.call(b, prop))
__defNormalProp(a, prop, b[prop]);
if (__getOwnPropSymbols)
for (var prop of __getOwnPropSymbols(b)) {
if (__propIsEnum.call(b, prop))
__defNormalProp(a, prop, b[prop]);
}
return a;
};
var __spreadProps = (a, b) => __defProps(a, __getOwnPropDescs(b));
const Utils = require("../../utils");
const Transaction = require("../../transaction");
const _ = require("lodash");
const MySqlQueryGenerator = require("../mysql/query-generator");
const AbstractQueryGenerator = require("../abstract/query-generator");
class SQLiteQueryGenerator extends MySqlQueryGenerator {
createSchema() {
return "SELECT name FROM `sqlite_master` WHERE type='table' and name!='sqlite_sequence';";
}
showSchemasQuery() {
return "SELECT name FROM `sqlite_master` WHERE type='table' and name!='sqlite_sequence';";
}
versionQuery() {
return "SELECT sqlite_version() as `version`";
}
createTableQuery(tableName, attributes, options) {
options = options || {};
const primaryKeys = [];
const needsMultiplePrimaryKeys = Object.values(attributes).filter((definition) => definition.includes("PRIMARY KEY")).length > 1;
const attrArray = [];
for (const attr in attributes) {
if (Object.prototype.hasOwnProperty.call(attributes, attr)) {
const dataType = attributes[attr];
const containsAutoIncrement = dataType.includes("AUTOINCREMENT");
let dataTypeString = dataType;
if (dataType.includes("PRIMARY KEY")) {
if (dataType.includes("INT")) {
dataTypeString = containsAutoIncrement ? "INTEGER PRIMARY KEY AUTOINCREMENT" : "INTEGER PRIMARY KEY";
if (dataType.includes(" REFERENCES")) {
dataTypeString += dataType.substr(dataType.indexOf(" REFERENCES"));
}
}
if (needsMultiplePrimaryKeys) {
primaryKeys.push(attr);
if (dataType.includes("NOT NULL")) {
dataTypeString = dataType.replace(" PRIMARY KEY", "");
} else {
dataTypeString = dataType.replace("PRIMARY KEY", "NOT NULL");
}
}
}
attrArray.push(`${this.quoteIdentifier(attr)} ${dataTypeString}`);
}
}
const table = this.quoteTable(tableName);
let attrStr = attrArray.join(", ");
const pkString = primaryKeys.map((pk) => this.quoteIdentifier(pk)).join(", ");
if (options.uniqueKeys) {
_.each(options.uniqueKeys, (columns) => {
if (columns.customIndex) {
attrStr += `, UNIQUE (${columns.fields.map((field) => this.quoteIdentifier(field)).join(", ")})`;
}
});
}
if (pkString.length > 0) {
attrStr += `, PRIMARY KEY (${pkString})`;
}
const sql = `CREATE TABLE IF NOT EXISTS ${table} (${attrStr});`;
return this.replaceBooleanDefaults(sql);
}
booleanValue(value) {
return value ? 1 : 0;
}
_checkValidJsonStatement(stmt) {
if (typeof stmt !== "string") {
return false;
}
const jsonFunctionRegex = /^\s*(json(?:_[a-z]+){0,2})\([^)]*\)/i;
const tokenCaptureRegex = /^\s*((?:([`"'])(?:(?!\2).|\2{2})*\2)|[\w\d\s]+|[().,;+-])/i;
let currentIndex = 0;
let openingBrackets = 0;
let closingBrackets = 0;
let hasJsonFunction = false;
let hasInvalidToken = false;
while (currentIndex < stmt.length) {
const string = stmt.substr(currentIndex);
const functionMatches = jsonFunctionRegex.exec(string);
if (functionMatches) {
currentIndex += functionMatches[0].indexOf("(");
hasJsonFunction = true;
continue;
}
const tokenMatches = tokenCaptureRegex.exec(string);
if (tokenMatches) {
const capturedToken = tokenMatches[1];
if (capturedToken === "(") {
openingBrackets++;
} else if (capturedToken === ")") {
closingBrackets++;
} else if (capturedToken === ";") {
hasInvalidToken = true;
break;
}
currentIndex += tokenMatches[0].length;
continue;
}
break;
}
hasInvalidToken |= openingBrackets !== closingBrackets;
if (hasJsonFunction && hasInvalidToken) {
throw new Error(`Invalid json statement: ${stmt}`);
}
return hasJsonFunction;
}
_toJSONValue(value) {
if (value instanceof Date) {
return value.toISOString();
}
if (Array.isArray(value) && value[0] instanceof Date) {
return value.map((val) => val.toISOString());
}
return value;
}
handleSequelizeMethod(smth, tableName, factory, options, prepend) {
if (smth instanceof Utils.Json) {
return super.handleSequelizeMethod(smth, tableName, factory, options, prepend);
}
if (smth instanceof Utils.Cast) {
if (/timestamp/i.test(smth.type)) {
smth.type = "datetime";
}
}
return AbstractQueryGenerator.prototype.handleSequelizeMethod.call(this, smth, tableName, factory, options, prepend);
}
addColumnQuery(table, key, dataType) {
const attributes = {};
attributes[key] = dataType;
const fields = this.attributesToSQL(attributes, { context: "addColumn" });
const attribute = `${this.quoteIdentifier(key)} ${fields[key]}`;
const sql = `ALTER TABLE ${this.quoteTable(table)} ADD ${attribute};`;
return this.replaceBooleanDefaults(sql);
}
showTablesQuery() {
return "SELECT name FROM `sqlite_master` WHERE type='table' and name!='sqlite_sequence';";
}
updateQuery(tableName, attrValueHash, where, options, attributes) {
options = options || {};
_.defaults(options, this.options);
attrValueHash = Utils.removeNullValuesFromHash(attrValueHash, options.omitNull, options);
const modelAttributeMap = {};
const values = [];
const bind = [];
const bindParam = options.bindParam || this.bindParam(bind);
if (attributes) {
_.each(attributes, (attribute, key) => {
modelAttributeMap[key] = attribute;
if (attribute.field) {
modelAttributeMap[attribute.field] = attribute;
}
});
}
for (const key in attrValueHash) {
const value = attrValueHash[key];
if (value instanceof Utils.SequelizeMethod || options.bindParam === false) {
values.push(`${this.quoteIdentifier(key)}=${this.escape(value, modelAttributeMap && modelAttributeMap[key] || void 0, { context: "UPDATE" })}`);
} else {
values.push(`${this.quoteIdentifier(key)}=${this.format(value, modelAttributeMap && modelAttributeMap[key] || void 0, { context: "UPDATE" }, bindParam)}`);
}
}
let query;
const whereOptions = __spreadProps(__spreadValues({}, options), { bindParam });
if (options.limit) {
query = `UPDATE ${this.quoteTable(tableName)} SET ${values.join(",")} WHERE rowid IN (SELECT rowid FROM ${this.quoteTable(tableName)} ${this.whereQuery(where, whereOptions)} LIMIT ${this.escape(options.limit)})`;
} else {
query = `UPDATE ${this.quoteTable(tableName)} SET ${values.join(",")} ${this.whereQuery(where, whereOptions)}`;
}
return { query, bind };
}
truncateTableQuery(tableName, options = {}) {
return [
`DELETE FROM ${this.quoteTable(tableName)}`,
options.restartIdentity ? `; DELETE FROM ${this.quoteTable("sqlite_sequence")} WHERE ${this.quoteIdentifier("name")} = ${Utils.addTicks(Utils.removeTicks(this.quoteTable(tableName), "`"), "'")};` : ""
].join("");
}
deleteQuery(tableName, where, options = {}, model) {
_.defaults(options, this.options);
let whereClause = this.getWhereConditions(where, null, model, options);
if (whereClause) {
whereClause = `WHERE ${whereClause}`;
}
if (options.limit) {
whereClause = `WHERE rowid IN (SELECT rowid FROM ${this.quoteTable(tableName)} ${whereClause} LIMIT ${this.escape(options.limit)})`;
}
return `DELETE FROM ${this.quoteTable(tableName)} ${whereClause}`;
}
attributesToSQL(attributes) {
const result = {};
for (const name in attributes) {
const dataType = attributes[name];
const fieldName = dataType.field || name;
if (_.isObject(dataType)) {
let sql = dataType.type.toString();
if (Object.prototype.hasOwnProperty.call(dataType, "allowNull") && !dataType.allowNull) {
sql += " NOT NULL";
}
if (Utils.defaultValueSchemable(dataType.defaultValue)) {
sql += ` DEFAULT ${this.escape(dataType.defaultValue, dataType)}`;
}
if (dataType.unique === true) {
sql += " UNIQUE";
}
if (dataType.primaryKey) {
sql += " PRIMARY KEY";
if (dataType.autoIncrement) {
sql += " AUTOINCREMENT";
}
}
if (dataType.references) {
const referencesTable = this.quoteTable(dataType.references.model);
let referencesKey;
if (dataType.references.key) {
referencesKey = this.quoteIdentifier(dataType.references.key);
} else {
referencesKey = this.quoteIdentifier("id");
}
sql += ` REFERENCES ${referencesTable} (${referencesKey})`;
if (dataType.onDelete) {
sql += ` ON DELETE ${dataType.onDelete.toUpperCase()}`;
}
if (dataType.onUpdate) {
sql += ` ON UPDATE ${dataType.onUpdate.toUpperCase()}`;
}
}
result[fieldName] = sql;
} else {
result[fieldName] = dataType;
}
}
return result;
}
showIndexesQuery(tableName) {
return `PRAGMA INDEX_LIST(${this.quoteTable(tableName)})`;
}
showConstraintsQuery(tableName, constraintName) {
let sql = `SELECT sql FROM sqlite_master WHERE tbl_name='${tableName}'`;
if (constraintName) {
sql += ` AND sql LIKE '%${constraintName}%'`;
}
return `${sql};`;
}
removeIndexQuery(tableName, indexNameOrAttributes) {
let indexName = indexNameOrAttributes;
if (typeof indexName !== "string") {
indexName = Utils.underscore(`${tableName}_${indexNameOrAttributes.join("_")}`);
}
return `DROP INDEX IF EXISTS ${this.quoteIdentifier(indexName)}`;
}
describeTableQuery(tableName, schema, schemaDelimiter) {
const table = {
_schema: schema,
_schemaDelimiter: schemaDelimiter,
tableName
};
return `PRAGMA TABLE_INFO(${this.quoteTable(this.addSchema(table))});`;
}
describeCreateTableQuery(tableName) {
return `SELECT sql FROM sqlite_master WHERE tbl_name='${tableName}';`;
}
removeColumnQuery(tableName, attributes) {
attributes = this.attributesToSQL(attributes);
let backupTableName;
if (typeof tableName === "object") {
backupTableName = {
tableName: `${tableName.tableName}_backup`,
schema: tableName.schema
};
} else {
backupTableName = `${tableName}_backup`;
}
const quotedTableName = this.quoteTable(tableName);
const quotedBackupTableName = this.quoteTable(backupTableName);
const attributeNames = Object.keys(attributes).map((attr) => this.quoteIdentifier(attr)).join(", ");
return `${this.createTableQuery(backupTableName, attributes)}INSERT INTO ${quotedBackupTableName} SELECT ${attributeNames} FROM ${quotedTableName};DROP TABLE ${quotedTableName};${this.createTableQuery(tableName, attributes)}INSERT INTO ${quotedTableName} SELECT ${attributeNames} FROM ${quotedBackupTableName};DROP TABLE ${quotedBackupTableName};`;
}
_alterConstraintQuery(tableName, attributes, createTableSql) {
let backupTableName;
attributes = this.attributesToSQL(attributes);
if (typeof tableName === "object") {
backupTableName = {
tableName: `${tableName.tableName}_backup`,
schema: tableName.schema
};
} else {
backupTableName = `${tableName}_backup`;
}
const quotedTableName = this.quoteTable(tableName);
const quotedBackupTableName = this.quoteTable(backupTableName);
const attributeNames = Object.keys(attributes).map((attr) => this.quoteIdentifier(attr)).join(", ");
return `${createTableSql.replace(`CREATE TABLE ${quotedTableName}`, `CREATE TABLE ${quotedBackupTableName}`).replace(`CREATE TABLE ${quotedTableName.replace(/`/g, '"')}`, `CREATE TABLE ${quotedBackupTableName}`)}INSERT INTO ${quotedBackupTableName} SELECT ${attributeNames} FROM ${quotedTableName};DROP TABLE ${quotedTableName};ALTER TABLE ${quotedBackupTableName} RENAME TO ${quotedTableName};`;
}
renameColumnQuery(tableName, attrNameBefore, attrNameAfter, attributes) {
let backupTableName;
attributes = this.attributesToSQL(attributes);
if (typeof tableName === "object") {
backupTableName = {
tableName: `${tableName.tableName}_backup`,
schema: tableName.schema
};
} else {
backupTableName = `${tableName}_backup`;
}
const quotedTableName = this.quoteTable(tableName);
const quotedBackupTableName = this.quoteTable(backupTableName);
const attributeNamesImport = Object.keys(attributes).map((attr) => attrNameAfter === attr ? `${this.quoteIdentifier(attrNameBefore)} AS ${this.quoteIdentifier(attr)}` : this.quoteIdentifier(attr)).join(", ");
const attributeNamesExport = Object.keys(attributes).map((attr) => this.quoteIdentifier(attr)).join(", ");
return `${this.createTableQuery(backupTableName, attributes)}INSERT INTO ${quotedBackupTableName} SELECT ${attributeNamesImport} FROM ${quotedTableName};DROP TABLE ${quotedTableName};${this.createTableQuery(tableName, attributes)}INSERT INTO ${quotedTableName} SELECT ${attributeNamesExport} FROM ${quotedBackupTableName};DROP TABLE ${quotedBackupTableName};`;
}
startTransactionQuery(transaction) {
if (transaction.parent) {
return `SAVEPOINT ${this.quoteIdentifier(transaction.name)};`;
}
return `BEGIN ${transaction.options.type} TRANSACTION;`;
}
setIsolationLevelQuery(value) {
switch (value) {
case Transaction.ISOLATION_LEVELS.REPEATABLE_READ:
return "-- SQLite is not able to choose the isolation level REPEATABLE READ.";
case Transaction.ISOLATION_LEVELS.READ_UNCOMMITTED:
return "PRAGMA read_uncommitted = ON;";
case Transaction.ISOLATION_LEVELS.READ_COMMITTED:
return "PRAGMA read_uncommitted = OFF;";
case Transaction.ISOLATION_LEVELS.SERIALIZABLE:
return "-- SQLite's default isolation level is SERIALIZABLE. Nothing to do.";
default:
throw new Error(`Unknown isolation level: ${value}`);
}
}
replaceBooleanDefaults(sql) {
return sql.replace(/DEFAULT '?false'?/g, "DEFAULT 0").replace(/DEFAULT '?true'?/g, "DEFAULT 1");
}
getForeignKeysQuery(tableName) {
return `PRAGMA foreign_key_list(${this.quoteTable(this.addSchema(tableName))})`;
}
tableExistsQuery(tableName) {
return `SELECT name FROM sqlite_master WHERE type='table' AND name=${this.escape(this.addSchema(tableName))};`;
}
quoteIdentifier(identifier, force) {
return Utils.addTicks(Utils.removeTicks(identifier, "`"), "`");
}
}
module.exports = SQLiteQueryGenerator;
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