Initial commit - Event Planner application

node_modules/@mikro-orm/sql/query/raw.js

@@ -0,0 +1,67 @@
+import { raw as raw_, Utils } from '@mikro-orm/core';
+/**
+ * Creates raw SQL query fragment that can be assigned to a property or part of a filter. This fragment is represented
+ * by `RawQueryFragment` class instance that can be serialized to a string, so it can be used both as an object value
+ * and key. When serialized, the fragment key gets cached and only such cached key will be recognized by the ORM.
+ * This adds a runtime safety to the raw query fragments.
+ *
+ * > **`raw()` helper is required since v6 to use a raw fragment in your query, both through EntityManager and QueryBuilder.**
+ *
+ * ```ts
+ * // as a value
+ * await em.find(User, { time: raw('now()') });
+ *
+ * // as a key
+ * await em.find(User, { [raw('lower(name)')]: name.toLowerCase() });
+ *
+ * // value can be empty array
+ * await em.find(User, { [raw('(select 1 = 1)')]: [] });
+ * ```
+ *
+ * The `raw` helper supports several signatures, you can pass in a callback that receives the current property alias:
+ *
+ * ```ts
+ * await em.find(User, { [raw(alias => `lower(${alias}.name)`)]: name.toLowerCase() });
+ * ```
+ *
+ * You can also use the `sql` tagged template function, which works the same, but supports only the simple string signature:
+ *
+ * ```ts
+ * await em.find(User, { [sql`lower(name)`]: name.toLowerCase() });
+ * ```
+ *
+ * When using inside filters, you might have to use a callback signature to create new raw instance for every filter usage.
+ *
+ * ```ts
+ * @Filter({ name: 'long', cond: () => ({ [raw('length(perex)')]: { $gt: 10000 } }) })
+ * ```
+ *
+ * The `raw` helper can be used within indexes and uniques to write database-agnostic SQL expressions. In that case, you can use `'??'` to tag your database identifiers (table name, column names, index name, ...) inside your expression, and pass those identifiers as a second parameter to the `raw` helper. Internally, those will automatically be quoted according to the database in use:
+ *
+ * ```ts
+ * // On postgres, will produce: create index "index custom_idx_on_name" on "library.author" ("country")
+ * // On mysql, will produce: create index `index custom_idx_on_name` on `library.author` (`country`)
+ * @Index({ name: 'custom_idx_on_name', expression: (table, columns) => raw(`create index ?? on ?? (??)`, ['custom_idx_on_name', table, columns.name]) })
+ * @Entity({ schema: 'library' })
+ * export class Author { ... }
+ * ```
+ *
+ * You can also use the `quote` tag function to write database-agnostic SQL expressions. The end-result is the same as using the `raw` function regarding database identifiers quoting, only to have a more elegant expression syntax:
+ *
+ * ```ts
+ * @Index({ name: 'custom_idx_on_name', expression: (table, columns) => quote`create index ${'custom_idx_on_name'} on ${table} (${columns.name})` })
+ * @Entity({ schema: 'library' })
+ * export class Author { ... }
+ * ```
+ */
+export function raw(sql, params) {
+  if (Utils.isObject(sql) && 'compile' in sql) {
+    const query = sql.compile();
+    return raw_(query.sql, query.parameters);
+  }
+  if (Utils.isObject(sql) && 'toQuery' in sql) {
+    const query = sql.toQuery();
+    return raw_(query.sql, query.params);
+  }
+  return raw_(sql, params);
+}