Le Viet
946 lines
32 KiB
JavaScript
Executable File
946 lines
32 KiB
JavaScript
Executable File
'use strict';
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const Utils = require('../../utils');
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const util = require('util');
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const DataTypes = require('../../data-types');
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const AbstractQueryGenerator = require('../abstract/query-generator');
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const semver = require('semver');
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const _ = require('lodash');
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class PostgresQueryGenerator extends AbstractQueryGenerator {
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setSearchPath(searchPath) {
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return `SET search_path to ${searchPath};`;
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}
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createDatabaseQuery(databaseName, options) {
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options = Object.assign({
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encoding: null,
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collate: null
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}, options || {});
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const values = {
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database: this.quoteTable(databaseName),
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encoding: options.encoding ? ` ENCODING = ${this.escape(options.encoding)}` : '',
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collation: options.collate ? ` LC_COLLATE = ${this.escape(options.collate)}` : '',
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ctype: options.ctype ? ` LC_CTYPE = ${this.escape(options.ctype)}` : '',
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template: options.template ? ` TEMPLATE = ${this.escape(options.template)}` : ''
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};
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return `CREATE DATABASE ${values.database}${values.encoding}${values.collation}${values.ctype}${values.template};`;
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}
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dropDatabaseQuery(databaseName) {
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return `DROP DATABASE IF EXISTS ${this.quoteTable(databaseName)};`;
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}
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createSchema(schema) {
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const databaseVersion = _.get(this, 'sequelize.options.databaseVersion', 0);
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if (databaseVersion && semver.gte(databaseVersion, '9.2.0')) {
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return `CREATE SCHEMA IF NOT EXISTS ${schema};`;
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}
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return `CREATE SCHEMA ${schema};`;
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}
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dropSchema(schema) {
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return `DROP SCHEMA IF EXISTS ${schema} CASCADE;`;
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}
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showSchemasQuery() {
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return "SELECT schema_name FROM information_schema.schemata WHERE schema_name <> 'information_schema' AND schema_name != 'public' AND schema_name !~ E'^pg_';";
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}
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versionQuery() {
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return 'SHOW SERVER_VERSION';
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}
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createTableQuery(tableName, attributes, options) {
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options = Object.assign({}, options || {});
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//Postgres 9.0 does not support CREATE TABLE IF NOT EXISTS, 9.1 and above do
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const databaseVersion = _.get(this, 'sequelize.options.databaseVersion', 0);
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const attrStr = [];
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let comments = '';
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let columnComments = '';
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const quotedTable = this.quoteTable(tableName);
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if (options.comment && typeof options.comment === 'string') {
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comments += `; COMMENT ON TABLE ${quotedTable} IS ${this.escape(options.comment)}`;
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}
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for (const attr in attributes) {
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const quotedAttr = this.quoteIdentifier(attr);
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const i = attributes[attr].indexOf('COMMENT ');
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if (i !== -1) {
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// Move comment to a separate query
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const escapedCommentText = this.escape(attributes[attr].substring(i + 8));
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columnComments += `; COMMENT ON COLUMN ${quotedTable}.${quotedAttr} IS ${escapedCommentText}`;
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attributes[attr] = attributes[attr].substring(0, i);
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}
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const dataType = this.dataTypeMapping(tableName, attr, attributes[attr]);
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attrStr.push(`${quotedAttr} ${dataType}`);
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}
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let attributesClause = attrStr.join(', ');
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if (options.uniqueKeys) {
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_.each(options.uniqueKeys, columns => {
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if (columns.customIndex) {
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attributesClause += `, UNIQUE (${columns.fields.map(field => this.quoteIdentifier(field)).join(', ')})`;
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}
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});
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}
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const pks = _.reduce(attributes, (acc, attribute, key) => {
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if (attribute.includes('PRIMARY KEY')) {
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acc.push(this.quoteIdentifier(key));
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}
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return acc;
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}, []).join(',');
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if (pks.length > 0) {
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attributesClause += `, PRIMARY KEY (${pks})`;
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}
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return `CREATE TABLE ${databaseVersion === 0 || semver.gte(databaseVersion, '9.1.0') ? 'IF NOT EXISTS ' : ''}${quotedTable} (${attributesClause})${comments}${columnComments};`;
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}
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dropTableQuery(tableName, options) {
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options = options || {};
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return `DROP TABLE IF EXISTS ${this.quoteTable(tableName)}${options.cascade ? ' CASCADE' : ''};`;
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}
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showTablesQuery() {
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return "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public' AND table_type LIKE '%TABLE' AND table_name != 'spatial_ref_sys';";
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}
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describeTableQuery(tableName, schema) {
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if (!schema) schema = 'public';
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return 'SELECT ' +
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'pk.constraint_type as "Constraint",' +
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'c.column_name as "Field", ' +
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'c.column_default as "Default",' +
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'c.is_nullable as "Null", ' +
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'(CASE WHEN c.udt_name = \'hstore\' THEN c.udt_name ELSE c.data_type END) || (CASE WHEN c.character_maximum_length IS NOT NULL THEN \'(\' || c.character_maximum_length || \')\' ELSE \'\' END) as "Type", ' +
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'(SELECT array_agg(e.enumlabel) FROM pg_catalog.pg_type t JOIN pg_catalog.pg_enum e ON t.oid=e.enumtypid WHERE t.typname=c.udt_name) AS "special", ' +
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'(SELECT pgd.description FROM pg_catalog.pg_statio_all_tables AS st INNER JOIN pg_catalog.pg_description pgd on (pgd.objoid=st.relid) WHERE c.ordinal_position=pgd.objsubid AND c.table_name=st.relname) AS "Comment" ' +
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'FROM information_schema.columns c ' +
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'LEFT JOIN (SELECT tc.table_schema, tc.table_name, ' +
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'cu.column_name, tc.constraint_type ' +
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'FROM information_schema.TABLE_CONSTRAINTS tc ' +
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'JOIN information_schema.KEY_COLUMN_USAGE cu ' +
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'ON tc.table_schema=cu.table_schema and tc.table_name=cu.table_name ' +
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'and tc.constraint_name=cu.constraint_name ' +
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'and tc.constraint_type=\'PRIMARY KEY\') pk ' +
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'ON pk.table_schema=c.table_schema ' +
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'AND pk.table_name=c.table_name ' +
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'AND pk.column_name=c.column_name ' +
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`WHERE c.table_name = ${this.escape(tableName)} AND c.table_schema = ${this.escape(schema)} `;
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}
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/**
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* Check whether the statmement is json function or simple path
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*
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* @param {string} stmt The statement to validate
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* @returns {boolean} true if the given statement is json function
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* @throws {Error} throw if the statement looks like json function but has invalid token
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*/
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_checkValidJsonStatement(stmt) {
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if (typeof stmt !== 'string') {
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return false;
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}
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// https://www.postgresql.org/docs/current/static/functions-json.html
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const jsonFunctionRegex = /^\s*((?:[a-z]+_){0,2}jsonb?(?:_[a-z]+){0,2})\([^)]*\)/i;
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const jsonOperatorRegex = /^\s*(->>?|#>>?|@>|<@|\?[|&]?|\|{2}|#-)/i;
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const tokenCaptureRegex = /^\s*((?:([`"'])(?:(?!\2).|\2{2})*\2)|[\w\d\s]+|[().,;+-])/i;
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let currentIndex = 0;
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let openingBrackets = 0;
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let closingBrackets = 0;
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let hasJsonFunction = false;
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let hasInvalidToken = false;
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while (currentIndex < stmt.length) {
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const string = stmt.substr(currentIndex);
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const functionMatches = jsonFunctionRegex.exec(string);
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if (functionMatches) {
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currentIndex += functionMatches[0].indexOf('(');
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hasJsonFunction = true;
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continue;
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}
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const operatorMatches = jsonOperatorRegex.exec(string);
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if (operatorMatches) {
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currentIndex += operatorMatches[0].length;
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hasJsonFunction = true;
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continue;
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}
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const tokenMatches = tokenCaptureRegex.exec(string);
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if (tokenMatches) {
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const capturedToken = tokenMatches[1];
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if (capturedToken === '(') {
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openingBrackets++;
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} else if (capturedToken === ')') {
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closingBrackets++;
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} else if (capturedToken === ';') {
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hasInvalidToken = true;
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break;
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}
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currentIndex += tokenMatches[0].length;
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continue;
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}
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break;
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}
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// Check invalid json statement
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hasInvalidToken |= openingBrackets !== closingBrackets;
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if (hasJsonFunction && hasInvalidToken) {
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throw new Error(`Invalid json statement: ${stmt}`);
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}
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// return true if the statement has valid json function
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return hasJsonFunction;
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}
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handleSequelizeMethod(smth, tableName, factory, options, prepend) {
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if (smth instanceof Utils.Json) {
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// Parse nested object
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if (smth.conditions) {
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const conditions = this.parseConditionObject(smth.conditions).map(condition =>
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`${this.jsonPathExtractionQuery(condition.path[0], _.tail(condition.path))} = '${condition.value}'`
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);
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return conditions.join(' AND ');
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}
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if (smth.path) {
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let str;
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// Allow specifying conditions using the postgres json syntax
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if (this._checkValidJsonStatement(smth.path)) {
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str = smth.path;
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} else {
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// Also support json property accessors
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const paths = _.toPath(smth.path);
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const column = paths.shift();
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str = this.jsonPathExtractionQuery(column, paths);
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}
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if (smth.value) {
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str += util.format(' = %s', this.escape(smth.value));
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}
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return str;
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}
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}
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return super.handleSequelizeMethod.call(this, smth, tableName, factory, options, prepend);
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}
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addColumnQuery(table, key, dataType) {
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const dbDataType = this.attributeToSQL(dataType, { context: 'addColumn', table, key });
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const definition = this.dataTypeMapping(table, key, dbDataType);
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const quotedKey = this.quoteIdentifier(key);
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const quotedTable = this.quoteTable(this.extractTableDetails(table));
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let query = `ALTER TABLE ${quotedTable} ADD COLUMN ${quotedKey} ${definition};`;
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if (dataType.type && dataType.type instanceof DataTypes.ENUM || dataType instanceof DataTypes.ENUM) {
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query = this.pgEnum(table, key, dataType) + query;
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}
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return query;
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}
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removeColumnQuery(tableName, attributeName) {
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const quotedTableName = this.quoteTable(this.extractTableDetails(tableName));
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const quotedAttributeName = this.quoteIdentifier(attributeName);
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return `ALTER TABLE ${quotedTableName} DROP COLUMN ${quotedAttributeName};`;
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}
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changeColumnQuery(tableName, attributes) {
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const query = subQuery => `ALTER TABLE ${this.quoteTable(tableName)} ALTER COLUMN ${subQuery};`;
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const sql = [];
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for (const attributeName in attributes) {
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let definition = this.dataTypeMapping(tableName, attributeName, attributes[attributeName]);
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let attrSql = '';
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if (definition.includes('NOT NULL')) {
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attrSql += query(`${this.quoteIdentifier(attributeName)} SET NOT NULL`);
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definition = definition.replace('NOT NULL', '').trim();
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} else if (!definition.includes('REFERENCES')) {
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attrSql += query(`${this.quoteIdentifier(attributeName)} DROP NOT NULL`);
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}
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if (definition.includes('DEFAULT')) {
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attrSql += query(`${this.quoteIdentifier(attributeName)} SET DEFAULT ${definition.match(/DEFAULT ([^;]+)/)[1]}`);
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definition = definition.replace(/(DEFAULT[^;]+)/, '').trim();
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} else if (!definition.includes('REFERENCES')) {
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attrSql += query(`${this.quoteIdentifier(attributeName)} DROP DEFAULT`);
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}
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if (attributes[attributeName].startsWith('ENUM(')) {
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attrSql += this.pgEnum(tableName, attributeName, attributes[attributeName]);
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definition = definition.replace(/^ENUM\(.+\)/, this.pgEnumName(tableName, attributeName, { schema: false }));
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definition += ` USING (${this.quoteIdentifier(attributeName)}::${this.pgEnumName(tableName, attributeName)})`;
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}
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if (definition.match(/UNIQUE;*$/)) {
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definition = definition.replace(/UNIQUE;*$/, '');
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attrSql += query(`ADD UNIQUE (${this.quoteIdentifier(attributeName)})`).replace('ALTER COLUMN', '');
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}
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if (definition.includes('REFERENCES')) {
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definition = definition.replace(/.+?(?=REFERENCES)/, '');
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attrSql += query(`ADD FOREIGN KEY (${this.quoteIdentifier(attributeName)}) ${definition}`).replace('ALTER COLUMN', '');
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} else {
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attrSql += query(`${this.quoteIdentifier(attributeName)} TYPE ${definition}`);
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}
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sql.push(attrSql);
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}
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return sql.join('');
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}
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renameColumnQuery(tableName, attrBefore, attributes) {
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const attrString = [];
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for (const attributeName in attributes) {
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attrString.push(`${this.quoteIdentifier(attrBefore)} TO ${this.quoteIdentifier(attributeName)}`);
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}
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return `ALTER TABLE ${this.quoteTable(tableName)} RENAME COLUMN ${attrString.join(', ')};`;
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}
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fn(fnName, tableName, parameters, body, returns, language) {
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fnName = fnName || 'testfunc';
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language = language || 'plpgsql';
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returns = returns ? `RETURNS ${returns}` : '';
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parameters = parameters || '';
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return `CREATE OR REPLACE FUNCTION pg_temp.${fnName}(${parameters}) ${returns} AS $func$ BEGIN ${body} END; $func$ LANGUAGE ${language}; SELECT * FROM pg_temp.${fnName}();`;
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}
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exceptionFn(fnName, tableName, parameters, main, then, when, returns, language) {
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when = when || 'unique_violation';
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const body = `${main} EXCEPTION WHEN ${when} THEN ${then};`;
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return this.fn(fnName, tableName, parameters, body, returns, language);
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}
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upsertQuery(tableName, insertValues, updateValues, where, model, options) {
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const primaryField = this.quoteIdentifier(model.primaryKeyField);
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const upsertOptions = _.defaults({ bindParam: false }, options);
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const insert = this.insertQuery(tableName, insertValues, model.rawAttributes, upsertOptions);
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const update = this.updateQuery(tableName, updateValues, where, upsertOptions, model.rawAttributes);
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insert.query = insert.query.replace('RETURNING *', `RETURNING ${primaryField} INTO primary_key`);
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update.query = update.query.replace('RETURNING *', `RETURNING ${primaryField} INTO primary_key`);
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return this.exceptionFn(
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'sequelize_upsert',
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tableName,
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'OUT created boolean, OUT primary_key text',
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`${insert.query} created := true;`,
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`${update.query}; created := false`
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);
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}
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truncateTableQuery(tableName, options = {}) {
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return [
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`TRUNCATE ${this.quoteTable(tableName)}`,
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options.restartIdentity ? ' RESTART IDENTITY' : '',
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options.cascade ? ' CASCADE' : ''
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].join('');
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}
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deleteQuery(tableName, where, options = {}, model) {
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const table = this.quoteTable(tableName);
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let whereClause = this.getWhereConditions(where, null, model, options);
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const limit = options.limit ? ` LIMIT ${this.escape(options.limit)}` : '';
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let primaryKeys = '';
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let primaryKeysSelection = '';
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if (whereClause) {
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whereClause = ` WHERE ${whereClause}`;
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}
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if (options.limit) {
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if (!model) {
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throw new Error('Cannot LIMIT delete without a model.');
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}
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const pks = _.values(model.primaryKeys).map(pk => this.quoteIdentifier(pk.field)).join(',');
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primaryKeys = model.primaryKeyAttributes.length > 1 ? `(${pks})` : pks;
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primaryKeysSelection = pks;
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return `DELETE FROM ${table} WHERE ${primaryKeys} IN (SELECT ${primaryKeysSelection} FROM ${table}${whereClause}${limit})`;
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}
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return `DELETE FROM ${table}${whereClause}`;
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}
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showIndexesQuery(tableName) {
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let schemaJoin = '';
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let schemaWhere = '';
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if (typeof tableName !== 'string') {
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schemaJoin = ', pg_namespace s';
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schemaWhere = ` AND s.oid = t.relnamespace AND s.nspname = '${tableName.schema}'`;
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tableName = tableName.tableName;
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}
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// This is ARCANE!
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return 'SELECT i.relname AS name, ix.indisprimary AS primary, ix.indisunique AS unique, ix.indkey AS indkey, ' +
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'array_agg(a.attnum) as column_indexes, array_agg(a.attname) AS column_names, pg_get_indexdef(ix.indexrelid) ' +
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`AS definition FROM pg_class t, pg_class i, pg_index ix, pg_attribute a${schemaJoin} ` +
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'WHERE t.oid = ix.indrelid AND i.oid = ix.indexrelid AND a.attrelid = t.oid AND ' +
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`t.relkind = 'r' and t.relname = '${tableName}'${schemaWhere} ` +
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'GROUP BY i.relname, ix.indexrelid, ix.indisprimary, ix.indisunique, ix.indkey ORDER BY i.relname;';
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}
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showConstraintsQuery(tableName) {
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//Postgres converts camelCased alias to lowercase unless quoted
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return [
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'SELECT constraint_catalog AS "constraintCatalog",',
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'constraint_schema AS "constraintSchema",',
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'constraint_name AS "constraintName",',
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'table_catalog AS "tableCatalog",',
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'table_schema AS "tableSchema",',
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'table_name AS "tableName",',
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'constraint_type AS "constraintType",',
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'is_deferrable AS "isDeferrable",',
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'initially_deferred AS "initiallyDeferred"',
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'from INFORMATION_SCHEMA.table_constraints',
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`WHERE table_name='${tableName}';`
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].join(' ');
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}
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removeIndexQuery(tableName, indexNameOrAttributes) {
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let indexName = indexNameOrAttributes;
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if (typeof indexName !== 'string') {
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indexName = Utils.underscore(`${tableName}_${indexNameOrAttributes.join('_')}`);
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}
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return `DROP INDEX IF EXISTS ${this.quoteIdentifiers(indexName)}`;
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}
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addLimitAndOffset(options) {
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let fragment = '';
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/* eslint-disable */
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if (options.limit != null) {
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fragment += ' LIMIT ' + this.escape(options.limit);
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}
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if (options.offset != null) {
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fragment += ' OFFSET ' + this.escape(options.offset);
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}
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/* eslint-enable */
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return fragment;
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}
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attributeToSQL(attribute, options) {
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if (!_.isPlainObject(attribute)) {
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attribute = {
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type: attribute
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};
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}
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let type;
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if (
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attribute.type instanceof DataTypes.ENUM ||
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attribute.type instanceof DataTypes.ARRAY && attribute.type.type instanceof DataTypes.ENUM
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) {
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const enumType = attribute.type.type || attribute.type;
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let values = attribute.values;
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if (enumType.values && !attribute.values) {
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values = enumType.values;
|
|
}
|
|
|
|
if (Array.isArray(values) && values.length > 0) {
|
|
type = `ENUM(${values.map(value => this.escape(value)).join(', ')})`;
|
|
|
|
if (attribute.type instanceof DataTypes.ARRAY) {
|
|
type += '[]';
|
|
}
|
|
|
|
} else {
|
|
throw new Error("Values for ENUM haven't been defined.");
|
|
}
|
|
}
|
|
|
|
if (!type) {
|
|
type = attribute.type;
|
|
}
|
|
|
|
let sql = type.toString();
|
|
|
|
if (Object.prototype.hasOwnProperty.call(attribute, 'allowNull') && !attribute.allowNull) {
|
|
sql += ' NOT NULL';
|
|
}
|
|
|
|
if (attribute.autoIncrement) {
|
|
if (attribute.autoIncrementIdentity) {
|
|
sql += ' GENERATED BY DEFAULT AS IDENTITY';
|
|
} else {
|
|
sql += ' SERIAL';
|
|
}
|
|
}
|
|
|
|
if (Utils.defaultValueSchemable(attribute.defaultValue)) {
|
|
sql += ` DEFAULT ${this.escape(attribute.defaultValue, attribute)}`;
|
|
}
|
|
|
|
if (attribute.unique === true) {
|
|
sql += ' UNIQUE';
|
|
}
|
|
|
|
if (attribute.primaryKey) {
|
|
sql += ' PRIMARY KEY';
|
|
}
|
|
|
|
if (attribute.references) {
|
|
let referencesTable = this.quoteTable(attribute.references.model);
|
|
let schema;
|
|
|
|
if (options.schema) {
|
|
schema = options.schema;
|
|
} else if (
|
|
(!attribute.references.model || typeof attribute.references.model == 'string')
|
|
&& options.table
|
|
&& options.table.schema
|
|
) {
|
|
schema = options.table.schema;
|
|
}
|
|
|
|
if (schema) {
|
|
referencesTable = this.quoteTable(this.addSchema({
|
|
tableName: referencesTable,
|
|
_schema: schema
|
|
}));
|
|
}
|
|
|
|
let referencesKey;
|
|
|
|
if (attribute.references.key) {
|
|
referencesKey = this.quoteIdentifiers(attribute.references.key);
|
|
} else {
|
|
referencesKey = this.quoteIdentifier('id');
|
|
}
|
|
|
|
sql += ` REFERENCES ${referencesTable} (${referencesKey})`;
|
|
|
|
if (attribute.onDelete) {
|
|
sql += ` ON DELETE ${attribute.onDelete.toUpperCase()}`;
|
|
}
|
|
|
|
if (attribute.onUpdate) {
|
|
sql += ` ON UPDATE ${attribute.onUpdate.toUpperCase()}`;
|
|
}
|
|
|
|
if (attribute.references.deferrable) {
|
|
sql += ` ${attribute.references.deferrable.toString(this)}`;
|
|
}
|
|
}
|
|
|
|
if (attribute.comment && typeof attribute.comment === 'string') {
|
|
if (options && (options.context === 'addColumn' || options.context === 'changeColumn')) {
|
|
const quotedAttr = this.quoteIdentifier(options.key);
|
|
const escapedCommentText = this.escape(attribute.comment);
|
|
sql += `; COMMENT ON COLUMN ${this.quoteTable(options.table)}.${quotedAttr} IS ${escapedCommentText}`;
|
|
} else {
|
|
// for createTable event which does it's own parsing
|
|
// TODO: centralize creation of comment statements here
|
|
sql += ` COMMENT ${attribute.comment}`;
|
|
}
|
|
}
|
|
|
|
return sql;
|
|
}
|
|
|
|
deferConstraintsQuery(options) {
|
|
return options.deferrable.toString(this);
|
|
}
|
|
|
|
setConstraintQuery(columns, type) {
|
|
let columnFragment = 'ALL';
|
|
|
|
if (columns) {
|
|
columnFragment = columns.map(column => this.quoteIdentifier(column)).join(', ');
|
|
}
|
|
|
|
return `SET CONSTRAINTS ${columnFragment} ${type}`;
|
|
}
|
|
|
|
setDeferredQuery(columns) {
|
|
return this.setConstraintQuery(columns, 'DEFERRED');
|
|
}
|
|
|
|
setImmediateQuery(columns) {
|
|
return this.setConstraintQuery(columns, 'IMMEDIATE');
|
|
}
|
|
|
|
attributesToSQL(attributes, options) {
|
|
const result = {};
|
|
|
|
for (const key in attributes) {
|
|
const attribute = attributes[key];
|
|
result[attribute.field || key] = this.attributeToSQL(attribute, Object.assign({ key }, options || {}));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
createTrigger(tableName, triggerName, eventType, fireOnSpec, functionName, functionParams, optionsArray) {
|
|
const decodedEventType = this.decodeTriggerEventType(eventType);
|
|
const eventSpec = this.expandTriggerEventSpec(fireOnSpec);
|
|
const expandedOptions = this.expandOptions(optionsArray);
|
|
const paramList = this.expandFunctionParamList(functionParams);
|
|
|
|
return `CREATE ${this.triggerEventTypeIsConstraint(eventType)}TRIGGER ${this.quoteIdentifier(triggerName)} ${decodedEventType} ${
|
|
eventSpec} ON ${this.quoteTable(tableName)}${expandedOptions ? ` ${expandedOptions}` : ''} EXECUTE PROCEDURE ${functionName}(${paramList});`;
|
|
}
|
|
|
|
dropTrigger(tableName, triggerName) {
|
|
return `DROP TRIGGER ${this.quoteIdentifier(triggerName)} ON ${this.quoteTable(tableName)} RESTRICT;`;
|
|
}
|
|
|
|
renameTrigger(tableName, oldTriggerName, newTriggerName) {
|
|
return `ALTER TRIGGER ${this.quoteIdentifier(oldTriggerName)} ON ${this.quoteTable(tableName)} RENAME TO ${this.quoteIdentifier(newTriggerName)};`;
|
|
}
|
|
|
|
createFunction(functionName, params, returnType, language, body, optionsArray, options) {
|
|
if (!functionName || !returnType || !language || !body) throw new Error('createFunction missing some parameters. Did you pass functionName, returnType, language and body?');
|
|
|
|
const paramList = this.expandFunctionParamList(params);
|
|
const variableList = options && options.variables ? this.expandFunctionVariableList(options.variables) : '';
|
|
const expandedOptionsArray = this.expandOptions(optionsArray);
|
|
|
|
const statement = options && options.force ? 'CREATE OR REPLACE FUNCTION' : 'CREATE FUNCTION';
|
|
|
|
return `${statement} ${functionName}(${paramList}) RETURNS ${returnType} AS $func$ ${variableList} BEGIN ${body} END; $func$ language '${language}'${expandedOptionsArray};`;
|
|
}
|
|
|
|
dropFunction(functionName, params) {
|
|
if (!functionName) throw new Error('requires functionName');
|
|
// RESTRICT is (currently, as of 9.2) default but we'll be explicit
|
|
const paramList = this.expandFunctionParamList(params);
|
|
return `DROP FUNCTION ${functionName}(${paramList}) RESTRICT;`;
|
|
}
|
|
|
|
renameFunction(oldFunctionName, params, newFunctionName) {
|
|
const paramList = this.expandFunctionParamList(params);
|
|
return `ALTER FUNCTION ${oldFunctionName}(${paramList}) RENAME TO ${newFunctionName};`;
|
|
}
|
|
|
|
databaseConnectionUri(config) {
|
|
let uri = `${config.protocol}://${config.user}:${config.password}@${config.host}`;
|
|
if (config.port) {
|
|
uri += `:${config.port}`;
|
|
}
|
|
uri += `/${config.database}`;
|
|
if (config.ssl) {
|
|
uri += `?ssl=${config.ssl}`;
|
|
}
|
|
return uri;
|
|
}
|
|
|
|
pgEscapeAndQuote(val) {
|
|
return this.quoteIdentifier(Utils.removeTicks(this.escape(val), "'"));
|
|
}
|
|
|
|
expandFunctionParamList(params) {
|
|
if (params === undefined || !Array.isArray(params)) {
|
|
throw new Error('expandFunctionParamList: function parameters array required, including an empty one for no arguments');
|
|
}
|
|
|
|
const paramList = [];
|
|
params.forEach(curParam => {
|
|
const paramDef = [];
|
|
if (curParam.type) {
|
|
if (curParam.direction) { paramDef.push(curParam.direction); }
|
|
if (curParam.name) { paramDef.push(curParam.name); }
|
|
paramDef.push(curParam.type);
|
|
} else {
|
|
throw new Error('function or trigger used with a parameter without any type');
|
|
}
|
|
|
|
const joined = paramDef.join(' ');
|
|
if (joined) paramList.push(joined);
|
|
|
|
});
|
|
|
|
return paramList.join(', ');
|
|
}
|
|
|
|
expandFunctionVariableList(variables) {
|
|
if (!Array.isArray(variables)) {
|
|
throw new Error('expandFunctionVariableList: function variables must be an array');
|
|
}
|
|
const variableDefinitions = [];
|
|
variables.forEach(variable => {
|
|
if (!variable.name || !variable.type) {
|
|
throw new Error('function variable must have a name and type');
|
|
}
|
|
let variableDefinition = `DECLARE ${variable.name} ${variable.type}`;
|
|
if (variable.default) {
|
|
variableDefinition += ` := ${variable.default}`;
|
|
}
|
|
variableDefinition += ';';
|
|
variableDefinitions.push(variableDefinition);
|
|
});
|
|
return variableDefinitions.join(' ');
|
|
}
|
|
|
|
expandOptions(options) {
|
|
return options === undefined || _.isEmpty(options) ?
|
|
'' : options.join(' ');
|
|
}
|
|
|
|
decodeTriggerEventType(eventSpecifier) {
|
|
const EVENT_DECODER = {
|
|
'after': 'AFTER',
|
|
'before': 'BEFORE',
|
|
'instead_of': 'INSTEAD OF',
|
|
'after_constraint': 'AFTER'
|
|
};
|
|
|
|
if (!EVENT_DECODER[eventSpecifier]) {
|
|
throw new Error(`Invalid trigger event specified: ${eventSpecifier}`);
|
|
}
|
|
|
|
return EVENT_DECODER[eventSpecifier];
|
|
}
|
|
|
|
triggerEventTypeIsConstraint(eventSpecifier) {
|
|
return eventSpecifier === 'after_constraint' ? 'CONSTRAINT ' : '';
|
|
}
|
|
|
|
expandTriggerEventSpec(fireOnSpec) {
|
|
if (_.isEmpty(fireOnSpec)) {
|
|
throw new Error('no table change events specified to trigger on');
|
|
}
|
|
|
|
return _.map(fireOnSpec, (fireValue, fireKey) => {
|
|
const EVENT_MAP = {
|
|
'insert': 'INSERT',
|
|
'update': 'UPDATE',
|
|
'delete': 'DELETE',
|
|
'truncate': 'TRUNCATE'
|
|
};
|
|
|
|
if (!EVENT_MAP[fireValue]) {
|
|
throw new Error(`parseTriggerEventSpec: undefined trigger event ${fireKey}`);
|
|
}
|
|
|
|
let eventSpec = EVENT_MAP[fireValue];
|
|
if (eventSpec === 'UPDATE') {
|
|
if (Array.isArray(fireValue) && fireValue.length > 0) {
|
|
eventSpec += ` OF ${fireValue.join(', ')}`;
|
|
}
|
|
}
|
|
|
|
return eventSpec;
|
|
}).join(' OR ');
|
|
}
|
|
|
|
pgEnumName(tableName, attr, options) {
|
|
options = options || {};
|
|
|
|
const tableDetails = this.extractTableDetails(tableName, options);
|
|
let enumName = Utils.addTicks(Utils.generateEnumName(tableDetails.tableName, attr), '"');
|
|
|
|
// pgListEnums requires the enum name only, without the schema
|
|
if (options.schema !== false && tableDetails.schema) {
|
|
enumName = this.quoteIdentifier(tableDetails.schema) + tableDetails.delimiter + enumName;
|
|
}
|
|
|
|
return enumName;
|
|
}
|
|
|
|
pgListEnums(tableName, attrName, options) {
|
|
let enumName = '';
|
|
const tableDetails = this.extractTableDetails(tableName, options);
|
|
|
|
if (tableDetails.tableName && attrName) {
|
|
enumName = ` AND t.typname=${this.pgEnumName(tableDetails.tableName, attrName, { schema: false }).replace(/"/g, "'")}`;
|
|
}
|
|
|
|
return 'SELECT t.typname enum_name, array_agg(e.enumlabel ORDER BY enumsortorder) enum_value FROM pg_type t ' +
|
|
'JOIN pg_enum e ON t.oid = e.enumtypid ' +
|
|
'JOIN pg_catalog.pg_namespace n ON n.oid = t.typnamespace ' +
|
|
`WHERE n.nspname = '${tableDetails.schema}'${enumName} GROUP BY 1`;
|
|
}
|
|
|
|
pgEnum(tableName, attr, dataType, options) {
|
|
const enumName = this.pgEnumName(tableName, attr, options);
|
|
let values;
|
|
|
|
if (dataType.values) {
|
|
values = `ENUM(${dataType.values.map(value => this.escape(value)).join(', ')})`;
|
|
} else {
|
|
values = dataType.toString().match(/^ENUM\(.+\)/)[0];
|
|
}
|
|
|
|
let sql = `CREATE TYPE ${enumName} AS ${values};`;
|
|
if (!!options && options.force === true) {
|
|
sql = this.pgEnumDrop(tableName, attr) + sql;
|
|
}
|
|
return sql;
|
|
}
|
|
|
|
pgEnumAdd(tableName, attr, value, options) {
|
|
const enumName = this.pgEnumName(tableName, attr);
|
|
let sql = `ALTER TYPE ${enumName} ADD VALUE `;
|
|
|
|
if (semver.gte(this.sequelize.options.databaseVersion, '9.3.0')) {
|
|
sql += 'IF NOT EXISTS ';
|
|
}
|
|
sql += this.escape(value);
|
|
|
|
if (options.before) {
|
|
sql += ` BEFORE ${this.escape(options.before)}`;
|
|
} else if (options.after) {
|
|
sql += ` AFTER ${this.escape(options.after)}`;
|
|
}
|
|
|
|
return sql;
|
|
}
|
|
|
|
pgEnumDrop(tableName, attr, enumName) {
|
|
enumName = enumName || this.pgEnumName(tableName, attr);
|
|
return `DROP TYPE IF EXISTS ${enumName}; `;
|
|
}
|
|
|
|
fromArray(text) {
|
|
text = text.replace(/^{/, '').replace(/}$/, '');
|
|
let matches = text.match(/("(?:\\.|[^"\\\\])*"|[^,]*)(?:\s*,\s*|\s*$)/ig);
|
|
|
|
if (matches.length < 1) {
|
|
return [];
|
|
}
|
|
|
|
matches = matches.map(m => m.replace(/",$/, '').replace(/,$/, '').replace(/(^"|"$)/, ''));
|
|
|
|
return matches.slice(0, -1);
|
|
}
|
|
|
|
padInt(i) {
|
|
return i < 10 ? `0${i.toString()}` : i.toString();
|
|
}
|
|
|
|
dataTypeMapping(tableName, attr, dataType) {
|
|
if (dataType.includes('PRIMARY KEY')) {
|
|
dataType = dataType.replace('PRIMARY KEY', '');
|
|
}
|
|
|
|
if (dataType.includes('SERIAL')) {
|
|
if (dataType.includes('BIGINT')) {
|
|
dataType = dataType.replace('SERIAL', 'BIGSERIAL');
|
|
dataType = dataType.replace('BIGINT', '');
|
|
} else if (dataType.includes('SMALLINT')) {
|
|
dataType = dataType.replace('SERIAL', 'SMALLSERIAL');
|
|
dataType = dataType.replace('SMALLINT', '');
|
|
} else {
|
|
dataType = dataType.replace('INTEGER', '');
|
|
}
|
|
dataType = dataType.replace('NOT NULL', '');
|
|
}
|
|
|
|
if (dataType.startsWith('ENUM(')) {
|
|
dataType = dataType.replace(/^ENUM\(.+\)/, this.pgEnumName(tableName, attr));
|
|
}
|
|
|
|
return dataType;
|
|
}
|
|
|
|
/**
|
|
* Generates an SQL query that returns all foreign keys of a table.
|
|
*
|
|
* @param {string} tableName The name of the table.
|
|
* @returns {string} The generated sql query.
|
|
* @private
|
|
*/
|
|
getForeignKeysQuery(tableName) {
|
|
return 'SELECT conname as constraint_name, pg_catalog.pg_get_constraintdef(r.oid, true) as condef FROM pg_catalog.pg_constraint r ' +
|
|
`WHERE r.conrelid = (SELECT oid FROM pg_class WHERE relname = '${tableName}' LIMIT 1) AND r.contype = 'f' ORDER BY 1;`;
|
|
}
|
|
|
|
/**
|
|
* Generate common SQL prefix for getForeignKeyReferencesQuery.
|
|
*
|
|
* @returns {string}
|
|
*/
|
|
_getForeignKeyReferencesQueryPrefix() {
|
|
return 'SELECT ' +
|
|
'DISTINCT tc.constraint_name as constraint_name, ' +
|
|
'tc.constraint_schema as constraint_schema, ' +
|
|
'tc.constraint_catalog as constraint_catalog, ' +
|
|
'tc.table_name as table_name,' +
|
|
'tc.table_schema as table_schema,' +
|
|
'tc.table_catalog as table_catalog,' +
|
|
'kcu.column_name as column_name,' +
|
|
'ccu.table_schema AS referenced_table_schema,' +
|
|
'ccu.table_catalog AS referenced_table_catalog,' +
|
|
'ccu.table_name AS referenced_table_name,' +
|
|
'ccu.column_name AS referenced_column_name ' +
|
|
'FROM information_schema.table_constraints AS tc ' +
|
|
'JOIN information_schema.key_column_usage AS kcu ' +
|
|
'ON tc.constraint_name = kcu.constraint_name ' +
|
|
'JOIN information_schema.constraint_column_usage AS ccu ' +
|
|
'ON ccu.constraint_name = tc.constraint_name ';
|
|
}
|
|
|
|
/**
|
|
* Generates an SQL query that returns all foreign keys details of a table.
|
|
*
|
|
* As for getForeignKeysQuery is not compatible with getForeignKeyReferencesQuery, so add a new function.
|
|
*
|
|
* @param {string} tableName
|
|
* @param {string} catalogName
|
|
* @param {string} schemaName
|
|
*/
|
|
getForeignKeyReferencesQuery(tableName, catalogName, schemaName) {
|
|
return `${this._getForeignKeyReferencesQueryPrefix()
|
|
}WHERE constraint_type = 'FOREIGN KEY' AND tc.table_name = '${tableName}'${
|
|
catalogName ? ` AND tc.table_catalog = '${catalogName}'` : ''
|
|
}${schemaName ? ` AND tc.table_schema = '${schemaName}'` : ''}`;
|
|
}
|
|
|
|
getForeignKeyReferenceQuery(table, columnName) {
|
|
const tableName = table.tableName || table;
|
|
const schema = table.schema;
|
|
return `${this._getForeignKeyReferencesQueryPrefix()
|
|
}WHERE constraint_type = 'FOREIGN KEY' AND tc.table_name='${tableName}' AND kcu.column_name = '${columnName}'${
|
|
schema ? ` AND tc.table_schema = '${schema}'` : ''}`;
|
|
}
|
|
|
|
/**
|
|
* Generates an SQL query that removes a foreign key from a table.
|
|
*
|
|
* @param {string} tableName The name of the table.
|
|
* @param {string} foreignKey The name of the foreign key constraint.
|
|
* @returns {string} The generated sql query.
|
|
* @private
|
|
*/
|
|
dropForeignKeyQuery(tableName, foreignKey) {
|
|
return `ALTER TABLE ${this.quoteTable(tableName)} DROP CONSTRAINT ${this.quoteIdentifier(foreignKey)};`;
|
|
}
|
|
}
|
|
|
|
module.exports = PostgresQueryGenerator;
|