driver commons refactor, default bulkinserter for mysql and postgres

packages/engines/default/driverBase.js

@@ -0,0 +1,34 @@
+const createBulkInsertStreamBase = require('./createBulkInsertStreamBase');
+
+const driverBase = {
+  analyserClass: null,
+  dumperClass: null,
+
+  async analyseFull(pool) {
+    const analyser = new this.analyserClass(pool, this);
+    return analyser.fullAnalysis();
+  },
+  async analyseSingleObject(pool, name, typeField = 'tables') {
+    const analyser = new this.analyserClass(pool, this);
+    analyser.singleObjectFilter = { ...name, typeField };
+    const res = await analyser.fullAnalysis();
+    return res.tables[0];
+  },
+  analyseSingleTable(pool, name) {
+    return this.analyseSingleObject(pool, name, 'tables');
+  },
+  async analyseIncremental(pool, structure) {
+    const analyser = new this.analyserClass(pool, this);
+    return analyser.incrementalAnalysis(structure);
+  },
+  createDumper() {
+    return new this.dumperClass(this);
+  },
+  async writeTable(pool, name, options) {
+    const { stream, mssql } = pool._nativeModules;
+    // @ts-ignore
+    return createBulkInsertStreamBase(this, stream, pool, name, options);
+  },
+};
+
+module.exports = driverBase;