67 lines
2.1 KiB
JavaScript
67 lines
2.1 KiB
JavaScript
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'use strict';
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const _ = require('lodash');
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const AbstractDialect = require('../abstract');
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const ConnectionManager = require('./connection-manager');
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const Query = require('./query');
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const QueryGenerator = require('./query-generator');
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const DataTypes = require('../../data-types').snowflake;
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const { SnowflakeQueryInterface } = require('./query-interface');
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class SnowflakeDialect extends AbstractDialect {
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constructor(sequelize) {
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super();
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this.sequelize = sequelize;
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this.connectionManager = new ConnectionManager(this, sequelize);
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this.queryGenerator = new QueryGenerator({
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_dialect: this,
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sequelize
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});
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this.queryInterface = new SnowflakeQueryInterface(sequelize, this.queryGenerator);
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}
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}
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SnowflakeDialect.prototype.supports = _.merge(_.cloneDeep(AbstractDialect.prototype.supports), {
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'VALUES ()': true,
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'LIMIT ON UPDATE': true,
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lock: true,
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forShare: 'LOCK IN SHARE MODE',
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settingIsolationLevelDuringTransaction: false,
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inserts: {
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ignoreDuplicates: ' IGNORE',
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// disable for now, but could be enable by approach below
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// https://stackoverflow.com/questions/54828745/how-to-migrate-on-conflict-do-nothing-from-postgresql-to-snowflake
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updateOnDuplicate: false
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},
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index: {
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collate: false,
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length: true,
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parser: true,
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type: true,
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using: 1
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},
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constraints: {
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dropConstraint: false,
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check: false
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},
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indexViaAlter: true,
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indexHints: true,
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NUMERIC: true,
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// disable for now, need more work to enable the GEOGRAPHY MAPPING
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GEOMETRY: false,
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JSON: false,
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REGEXP: true,
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schemas: true
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});
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SnowflakeDialect.prototype.defaultVersion = '5.7.0';
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SnowflakeDialect.prototype.Query = Query;
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SnowflakeDialect.prototype.QueryGenerator = QueryGenerator;
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SnowflakeDialect.prototype.DataTypes = DataTypes;
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SnowflakeDialect.prototype.name = 'snowflake';
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SnowflakeDialect.prototype.TICK_CHAR = '"';
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SnowflakeDialect.prototype.TICK_CHAR_LEFT = SnowflakeDialect.prototype.TICK_CHAR;
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SnowflakeDialect.prototype.TICK_CHAR_RIGHT = SnowflakeDialect.prototype.TICK_CHAR;
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module.exports = SnowflakeDialect;
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