%PDF-
%PDF-
Mini Shell
Mini Shell
'use strict';
const Utils = require('../../utils');
const util = require('util');
const DataTypes = require('../../data-types');
const AbstractQueryGenerator = require('../abstract/query-generator');
const semver = require('semver');
const _ = require('lodash');
const QueryGenerator = {
__proto__: AbstractQueryGenerator,
options: {},
dialect: 'postgres',
setSearchPath(searchPath) {
return `SET search_path to ${searchPath};`;
},
createSchema(schema) {
const databaseVersion = _.get(this, 'sequelize.options.databaseVersion', 0);
if (databaseVersion && semver.gte(databaseVersion, '9.2.0')) {
return `CREATE SCHEMA IF NOT EXISTS ${schema};`;
}
return `CREATE SCHEMA ${schema};`;
},
dropSchema(schema) {
return `DROP SCHEMA IF EXISTS ${schema} CASCADE;`;
},
showSchemasQuery() {
return "SELECT schema_name FROM information_schema.schemata WHERE schema_name <> 'information_schema' AND schema_name != 'public' AND schema_name !~ E'^pg_';";
},
versionQuery() {
return 'SHOW SERVER_VERSION';
},
createTableQuery(tableName, attributes, options) {
options = _.extend({}, options || {});
//Postgres 9.0 does not support CREATE TABLE IF NOT EXISTS, 9.1 and above do
const databaseVersion = _.get(this, 'sequelize.options.databaseVersion', 0);
const attrStr = [];
let comments = '';
if (options.comment && _.isString(options.comment)) {
comments += '; COMMENT ON TABLE <%= table %> IS ' + this.escape(options.comment);
}
for (const attr in attributes) {
const i = attributes[attr].indexOf('COMMENT');
if (i !== -1) {
// Move comment to a separate query
comments += '; ' + attributes[attr].substring(i);
attributes[attr] = attributes[attr].substring(0, i);
}
const dataType = this.dataTypeMapping(tableName, attr, attributes[attr]);
attrStr.push(this.quoteIdentifier(attr) + ' ' + dataType);
}
const values = {
table: this.quoteTable(tableName),
attributes: attrStr.join(', '),
comments: _.template(comments, this._templateSettings)({ table: this.quoteTable(tableName) })
};
if (options.uniqueKeys) {
_.each(options.uniqueKeys, columns => {
if (columns.customIndex) {
values.attributes += `, UNIQUE (${columns.fields.map(field => this.quoteIdentifier(field)).join(', ')})`;
}
});
}
const pks = _.reduce(attributes, (acc, attribute, key) => {
if (_.includes(attribute, 'PRIMARY KEY')) {
acc.push(this.quoteIdentifier(key));
}
return acc;
}, []).join(',');
if (pks.length > 0) {
values.attributes += `, PRIMARY KEY (${pks})`;
}
return `CREATE TABLE ${databaseVersion === 0 || semver.gte(databaseVersion, '9.1.0') ? 'IF NOT EXISTS ' : ''}${values.table} (${values.attributes})${values.comments};`;
},
dropTableQuery(tableName, options) {
options = options || {};
return `DROP TABLE IF EXISTS ${this.quoteTable(tableName)}${options.cascade ? ' CASCADE' : ''};`;
},
showTablesQuery() {
return "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public' AND table_type LIKE '%TABLE' AND table_name != 'spatial_ref_sys';";
},
describeTableQuery(tableName, schema) {
if (!schema) {
schema = 'public';
}
return 'SELECT pk.constraint_type as "Constraint", c.column_name as "Field", ' +
'c.column_default as "Default", c.is_nullable as "Null", ' +
'(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", ' +
'(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" ' +
'FROM information_schema.columns c ' +
'LEFT JOIN (SELECT tc.table_schema, tc.table_name, ' +
'cu.column_name, tc.constraint_type ' +
'FROM information_schema.TABLE_CONSTRAINTS tc ' +
'JOIN information_schema.KEY_COLUMN_USAGE cu ' +
'ON tc.table_schema=cu.table_schema and tc.table_name=cu.table_name ' +
'and tc.constraint_name=cu.constraint_name ' +
'and tc.constraint_type=\'PRIMARY KEY\') pk ' +
'ON pk.table_schema=c.table_schema ' +
'AND pk.table_name=c.table_name ' +
'AND pk.column_name=c.column_name ' +
`WHERE c.table_name = ${this.escape(tableName)} AND c.table_schema = ${this.escape(schema)} `;
},
/**
* Check whether the statmement is json function or simple path
*
* @param {String} stmt The statement to validate
* @returns {Boolean} true if the given statement is json function
* @throws {Error} throw if the statement looks like json function but has invalid token
*/
_checkValidJsonStatement(stmt) {
if (!_.isString(stmt)) {
return false;
}
// https://www.postgresql.org/docs/current/static/functions-json.html
const jsonFunctionRegex = /^\s*((?:[a-z]+_){0,2}jsonb?(?:_[a-z]+){0,2})\([^)]*\)/i;
const jsonOperatorRegex = /^\s*(->>?|#>>?|@>|<@|\?[|&]?|\|{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 operatorMatches = jsonOperatorRegex.exec(string);
if (operatorMatches) {
currentIndex += operatorMatches[0].length;
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;
}
// Check invalid json statement
hasInvalidToken |= openingBrackets !== closingBrackets;
if (hasJsonFunction && hasInvalidToken) {
throw new Error('Invalid json statement: ' + stmt);
}
// return true if the statement has valid json function
return hasJsonFunction;
},
/**
* Generates an SQL query that extract JSON property of given path.
*
* @param {String} column The JSON column
* @param {String|Array<String>} [path] The path to extract (optional)
* @returns {String} The generated sql query
* @private
*/
jsonPathExtractionQuery(column, path) {
const paths = _.toPath(path);
const pathStr = this.escape(`{${paths.join(',')}}`);
const quotedColumn = this.isIdentifierQuoted(column) ? column : this.quoteIdentifier(column);
return `(${quotedColumn}#>>${pathStr})`;
},
handleSequelizeMethod(smth, tableName, factory, options, prepend) {
if (smth instanceof Utils.Json) {
// Parse nested object
if (smth.conditions) {
const conditions = _.map(this.parseConditionObject(smth.conditions), condition =>
`${this.jsonPathExtractionQuery(_.first(condition.path), _.tail(condition.path))} = '${condition.value}'`
);
return conditions.join(' AND ');
} else if (smth.path) {
let str;
// Allow specifying conditions using the postgres json syntax
if (this._checkValidJsonStatement(smth.path)) {
str = smth.path;
} else {
// Also support json property accessors
const paths = _.toPath(smth.path);
const column = paths.shift();
str = this.jsonPathExtractionQuery(column, paths);
}
if (smth.value) {
str += util.format(' = %s', this.escape(smth.value));
}
return str;
}
}
return AbstractQueryGenerator.handleSequelizeMethod.call(this, smth, tableName, factory, options, prepend);
},
addColumnQuery(table, key, dataType) {
const dbDataType = this.attributeToSQL(dataType, { context: 'addColumn' });
const definition = this.dataTypeMapping(table, key, dbDataType);
const quotedKey = this.quoteIdentifier(key);
const quotedTable = this.quoteTable(this.extractTableDetails(table));
let query = `ALTER TABLE ${quotedTable} ADD COLUMN ${quotedKey} ${definition};`;
if (dataType.type && dataType.type instanceof DataTypes.ENUM || dataType instanceof DataTypes.ENUM) {
query = this.pgEnum(table, key, dataType) + query;
}
return query;
},
removeColumnQuery(tableName, attributeName) {
const quotedTableName = this.quoteTable(this.extractTableDetails(tableName));
const quotedAttributeName = this.quoteIdentifier(attributeName);
return `ALTER TABLE ${quotedTableName} DROP COLUMN ${quotedAttributeName};`;
},
changeColumnQuery(tableName, attributes) {
const query = 'ALTER TABLE <%= tableName %> ALTER COLUMN <%= query %>;';
const sql = [];
for (const attributeName in attributes) {
let definition = this.dataTypeMapping(tableName, attributeName, attributes[attributeName]);
let attrSql = '';
if (definition.indexOf('NOT NULL') > 0) {
attrSql += _.template(query, this._templateSettings)({
tableName: this.quoteTable(tableName),
query: this.quoteIdentifier(attributeName) + ' SET NOT NULL'
});
definition = definition.replace('NOT NULL', '').trim();
} else if (!definition.match(/REFERENCES/)) {
attrSql += _.template(query, this._templateSettings)({
tableName: this.quoteTable(tableName),
query: this.quoteIdentifier(attributeName) + ' DROP NOT NULL'
});
}
if (definition.indexOf('DEFAULT') > 0) {
attrSql += _.template(query, this._templateSettings)({
tableName: this.quoteTable(tableName),
query: this.quoteIdentifier(attributeName) + ' SET DEFAULT ' + definition.match(/DEFAULT ([^;]+)/)[1]
});
definition = definition.replace(/(DEFAULT[^;]+)/, '').trim();
} else if (!definition.match(/REFERENCES/)) {
attrSql += _.template(query, this._templateSettings)({
tableName: this.quoteTable(tableName),
query: this.quoteIdentifier(attributeName) + ' DROP DEFAULT'
});
}
if (attributes[attributeName].match(/^ENUM\(/)) {
attrSql += this.pgEnum(tableName, attributeName, attributes[attributeName]);
definition = definition.replace(/^ENUM\(.+\)/, this.pgEnumName(tableName, attributeName, { schema: false }));
definition += ' USING (' + this.quoteIdentifier(attributeName) + '::' + this.pgEnumName(tableName, attributeName) + ')';
}
if (definition.match(/UNIQUE;*$/)) {
definition = definition.replace(/UNIQUE;*$/, '');
attrSql += _.template(query.replace('ALTER COLUMN', ''), this._templateSettings)({
tableName: this.quoteTable(tableName),
query: 'ADD CONSTRAINT ' + this.quoteIdentifier(attributeName + '_unique_idx') + ' UNIQUE (' + this.quoteIdentifier(attributeName) + ')'
});
}
if (definition.match(/REFERENCES/)) {
definition = definition.replace(/.+?(?=REFERENCES)/, '');
attrSql += _.template(query.replace('ALTER COLUMN', ''), this._templateSettings)({
tableName: this.quoteTable(tableName),
query: 'ADD CONSTRAINT ' + this.quoteIdentifier(attributeName + '_foreign_idx') + ' FOREIGN KEY (' + this.quoteIdentifier(attributeName) + ') ' + definition
});
} else {
attrSql += _.template(query, this._templateSettings)({
tableName: this.quoteTable(tableName),
query: this.quoteIdentifier(attributeName) + ' TYPE ' + definition
});
}
sql.push(attrSql);
}
return sql.join('');
},
renameColumnQuery(tableName, attrBefore, attributes) {
const attrString = [];
for (const attributeName in attributes) {
attrString.push(_.template('<%= before %> TO <%= after %>', this._templateSettings)({
before: this.quoteIdentifier(attrBefore),
after: this.quoteIdentifier(attributeName)
}));
}
return `ALTER TABLE ${this.quoteTable(tableName)} RENAME COLUMN ${attrString.join(', ')};`;
},
fn(fnName, tableName, parameters, body, returns, language) {
fnName = fnName || 'testfunc';
language = language || 'plpgsql';
returns = returns ? `RETURNS ${returns}` : '';
parameters = parameters || '';
return `CREATE OR REPLACE FUNCTION pg_temp.${fnName}(${parameters}) ${returns} AS $func$ BEGIN ${body} END; $func$ LANGUAGE ${language}; SELECT * FROM pg_temp.${fnName}();`;
},
exceptionFn(fnName, tableName, parameters, main, then, when, returns, language) {
when = when || 'unique_violation';
const body = `${main} EXCEPTION WHEN ${when} THEN ${then};`;
return this.fn(fnName, tableName, parameters, body, returns, language);
},
upsertQuery(tableName, insertValues, updateValues, where, model, options) {
const primaryField = this.quoteIdentifier(model.primaryKeyField);
let insert = this.insertQuery(tableName, insertValues, model.rawAttributes, options);
let update = this.updateQuery(tableName, updateValues, where, options, model.rawAttributes);
insert = insert.replace('RETURNING *', `RETURNING ${primaryField} INTO primary_key`);
update = update.replace('RETURNING *', `RETURNING ${primaryField} INTO primary_key`);
return this.exceptionFn(
'sequelize_upsert',
tableName,
'OUT created boolean, OUT primary_key text',
`${insert} created := true;`,
`${update}; created := false`
);
},
deleteQuery(tableName, where, options, model) {
let query;
options = options || {};
tableName = this.quoteTable(tableName);
if (options.truncate === true) {
query = 'TRUNCATE ' + tableName;
if (options.restartIdentity) {
query += ' RESTART IDENTITY';
}
if (options.cascade) {
query += ' CASCADE';
}
return query;
}
if (_.isUndefined(options.limit)) {
options.limit = 1;
}
const replacements = {
table: tableName,
where: this.getWhereConditions(where, null, model, options),
limit: options.limit ? ' LIMIT ' + this.escape(options.limit) : ''
};
if (options.limit) {
if (!model) {
throw new Error('Cannot LIMIT delete without a model.');
}
const pks = _.map(_.values(model.primaryKeys), pk => this.quoteIdentifier(pk.field)).join(',');
replacements.primaryKeys = model.primaryKeyAttributes.length > 1 ? '(' + pks + ')' : pks;
replacements.primaryKeysSelection = pks;
query = 'DELETE FROM <%= table %> WHERE <%= primaryKeys %> IN (SELECT <%= primaryKeysSelection %> FROM <%= table %><%= where %><%= limit %>)';
} else {
query = 'DELETE FROM <%= table %><%= where %>';
}
if (replacements.where) {
replacements.where = ' WHERE ' + replacements.where;
}
return _.template(query, this._templateSettings)(replacements);
},
showIndexesQuery(tableName) {
let schemaJoin = '';
let schemaWhere = '';
if (!_.isString(tableName)) {
schemaJoin = ', pg_namespace s';
schemaWhere = ` AND s.oid = t.relnamespace AND s.nspname = '${tableName.schema}'`;
tableName = tableName.tableName;
}
// This is ARCANE!
return 'SELECT i.relname AS name, ix.indisprimary AS primary, ix.indisunique AS unique, ix.indkey AS indkey, ' +
'array_agg(a.attnum) as column_indexes, array_agg(a.attname) AS column_names, pg_get_indexdef(ix.indexrelid) ' +
`AS definition FROM pg_class t, pg_class i, pg_index ix, pg_attribute a${schemaJoin} ` +
'WHERE t.oid = ix.indrelid AND i.oid = ix.indexrelid AND a.attrelid = t.oid AND ' +
`t.relkind = 'r' and t.relname = '${tableName}'${schemaWhere} ` +
'GROUP BY i.relname, ix.indexrelid, ix.indisprimary, ix.indisunique, ix.indkey ORDER BY i.relname;';
},
showConstraintsQuery(tableName) {
//Postgres converts camelCased alias to lowercase unless quoted
return [
'SELECT constraint_catalog AS "constraintCatalog",',
'constraint_schema AS "constraintSchema",',
'constraint_name AS "constraintName",',
'table_catalog AS "tableCatalog",',
'table_schema AS "tableSchema",',
'table_name AS "tableName",',
'constraint_type AS "constraintType",',
'is_deferrable AS "isDeferrable",',
'initially_deferred AS "initiallyDeferred"',
'from INFORMATION_SCHEMA.table_constraints',
`WHERE table_name='${tableName}';`
].join(' ');
},
removeIndexQuery(tableName, indexNameOrAttributes) {
let indexName = indexNameOrAttributes;
if (typeof indexName !== 'string') {
indexName = Utils.underscore(tableName + '_' + indexNameOrAttributes.join('_'));
}
return `DROP INDEX IF EXISTS ${this.quoteIdentifiers(indexName)}`;
},
addLimitAndOffset(options) {
let fragment = '';
/* eslint-disable */
if (options.limit != null) {
fragment += ' LIMIT ' + this.escape(options.limit);
}
if (options.offset != null) {
fragment += ' OFFSET ' + this.escape(options.offset);
}
/* eslint-enable */
return fragment;
},
attributeToSQL(attribute) {
if (!_.isPlainObject(attribute)) {
attribute = {
type: attribute
};
}
let type;
if (
attribute.type instanceof DataTypes.ENUM ||
(attribute.type instanceof DataTypes.ARRAY && attribute.type.type instanceof DataTypes.ENUM)
) {
const enumType = attribute.type.type || attribute.type;
let values = attribute.values;
if (enumType.values && !attribute.values) {
values = enumType.values;
}
if (Array.isArray(values) && values.length > 0) {
type = 'ENUM(' + _.map(values, 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 + '';
if (attribute.hasOwnProperty('allowNull') && !attribute.allowNull) {
sql += ' NOT NULL';
}
if (attribute.autoIncrement) {
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) {
const referencesTable = this.quoteTable(attribute.references.model);
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);
}
}
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, 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 ${triggerName}\n`
+ `\t${decodedEventType} ${eventSpec}\n`
+ `\tON ${tableName}\n`
+ `\t${expandedOptions}\n`
+ `\tEXECUTE PROCEDURE ${functionName}(${paramList});`;
},
dropTrigger(tableName, triggerName) {
return `DROP TRIGGER ${triggerName} ON ${tableName} RESTRICT;`;
},
renameTrigger(tableName, oldTriggerName, newTriggerName) {
return `ALTER TRIGGER ${oldTriggerName} ON ${tableName} RENAME TO ${newTriggerName};`;
},
createFunction(functionName, params, returnType, language, body, 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 indentedBody = body.replace('\n', '\n\t');
const expandedOptions = this.expandOptions(options);
return `CREATE FUNCTION ${functionName}(${paramList})\n`
+ `RETURNS ${returnType} AS $func$\n`
+ 'BEGIN\n'
+ `\t${indentedBody}\n`
+ 'END;\n'
+ `$func$ language '${language}'${expandedOptions};`;
},
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 (_.isUndefined(params) || !_.isArray(params)) {
throw new Error('expandFunctionParamList: function parameters array required, including an empty one for no arguments');
}
const paramList = [];
_.each(params, curParam => {
const paramDef = [];
if (_.has(curParam, 'type')) {
if (_.has(curParam, 'direction')) { paramDef.push(curParam.direction); }
if (_.has(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(', ');
},
expandOptions(options) {
return _.isUndefined(options) || _.isEmpty(options) ?
'' : '\n\t' + options.join('\n\t');
},
decodeTriggerEventType(eventSpecifier) {
const EVENT_DECODER = {
'after': 'AFTER',
'before': 'BEFORE',
'instead_of': 'INSTEAD OF',
'after_constraint': 'AFTER'
};
if (!_.has(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 (!_.has(EVENT_MAP, fireValue)) {
throw new Error('parseTriggerEventSpec: undefined trigger event ' + fireKey);
}
let eventSpec = EVENT_MAP[fireValue];
if (eventSpec === 'UPDATE') {
if (_.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.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 (_.includes(dataType, 'PRIMARY KEY')) {
dataType = dataType.replace(/PRIMARY KEY/, '');
}
if (_.includes(dataType, 'SERIAL')) {
if (_.includes(dataType, 'BIGINT')) {
dataType = dataType.replace(/SERIAL/, 'BIGSERIAL');
dataType = dataType.replace(/BIGINT/, '');
} else if (_.includes(dataType, 'SMALLINT')) {
dataType = dataType.replace(/SERIAL/, 'SMALLSERIAL');
dataType = dataType.replace(/SMALLINT/, '');
} else {
dataType = dataType.replace(/INTEGER/, '');
}
dataType = dataType.replace(/NOT NULL/, '');
}
if (dataType.match(/^ENUM\(/)) {
dataType = dataType.replace(/^ENUM\(.+\)/, this.pgEnumName(tableName, attr));
}
return dataType;
},
quoteIdentifier(identifier, force) {
if (identifier === '*') return identifier;
if (!force && this.options && this.options.quoteIdentifiers === false && identifier.indexOf('.') === -1 && identifier.indexOf('->') === -1) { // default is `true`
// In Postgres, if tables or attributes are created double-quoted,
// they are also case sensitive. If they contain any uppercase
// characters, they must always be double-quoted. This makes it
// impossible to write queries in portable SQL if tables are created in
// this way. Hence, we strip quotes if we don't want case sensitivity.
return Utils.removeTicks(identifier, '"');
} else {
return Utils.addTicks(Utils.removeTicks(identifier, '"'), '"');
}
},
/**
* Generates an SQL query that returns all foreign keys of a table.
*
* @param {String} tableName The name of the table.
* @return {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.
* @return {String} The generated sql query.
* @private
*/
dropForeignKeyQuery(tableName, foreignKey) {
return 'ALTER TABLE ' + this.quoteTable(tableName) + ' DROP CONSTRAINT ' + this.quoteIdentifier(foreignKey) + ';';
},
setAutocommitQuery(value, options) {
if (options.parent) {
return;
}
// POSTGRES does not support setting AUTOCOMMIT = OFF as of 9.4.0
// Additionally it does not support AUTOCOMMIT at all starting at v9.5
// The assumption is that it won't be returning in future versions either
// If you are on a Pg version that is not semver compliant e.g. '9.5.0beta2', which fails due to the 'beta' qualification, then you need to pass
// the database version as "9.5.0" explicitly through the options param passed when creating the Sequelize instance under the key "databaseVersion"
// otherwise Pg version "9.4.0" is assumed by default as per Sequelize 3.14.2.
// For Pg versions that are semver compliant, this is auto-detected upon the first connection.
if (!value || semver.gte(this.sequelize.options.databaseVersion, '9.4.0')) {
return;
}
return AbstractQueryGenerator.setAutocommitQuery.call(this, value, options);
}
};
module.exports = QueryGenerator;
Zerion Mini Shell 1.0