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92 lines
2.5 KiB
JavaScript
92 lines
2.5 KiB
JavaScript
'use strict';
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// Oracle Client
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// -------
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var inherits = require('inherits')
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var Client = require('../../client')
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var Promise = require('../../promise')
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var ReturningHelper = require('./utils').ReturningHelper
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var Formatter = require('./formatter')
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var assign = require('lodash/object/assign')
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var QueryCompiler = require('./query/compiler')
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// Always initialize with the "QueryBuilder" and "QueryCompiler"
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// objects, which extend the base 'lib/query/builder' and
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// 'lib/query/compiler', respectively.
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function Client_Oracle(config) {
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Client.call(this, config)
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}
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inherits(Client_Oracle, Client)
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assign(Client_Oracle.prototype, {
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// The "dialect", for reference elsewhere.
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dialect: 'oracle',
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// Lazy-load the oracle dependency, since we might just be
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// using the client to generate SQL strings.
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driverName: 'oracle',
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Formatter: Formatter,
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QueryCompiler: QueryCompiler,
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// Get a raw connection, called by the `pool` whenever a new
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// connection needs to be added to the pool.
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acquireRawConnection: function() {
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var client = this
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return new Promise(function(resolver, rejecter) {
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client.driver.connect(client.connectionSettings,
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function(err, connection) {
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if (err) return rejecter(err)
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if (client.connectionSettings.prefetchRowCount) {
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connection.setPrefetchRowCount(client.connectionSettings.prefetchRowCount)
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}
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resolver(connection)
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})
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})
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},
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// Used to explicitly close a connection, called internally by the pool
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// when a connection times out or the pool is shutdown.
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destroyRawConnection: function(connection, cb) {
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connection.close()
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cb()
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},
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// Return the database for the Oracle client.
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database: function() {
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return this.connectionSettings.database
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},
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// Position the bindings for the query.
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positionBindings: function(sql) {
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var questionCount = 0
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return sql.replace(/\?/g, function() {
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questionCount += 1
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return ':' + questionCount
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})
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},
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preprocessBindings: function(bindings) {
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var driver = this.driver
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if (!bindings) {
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return bindings
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}
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return bindings.map(function(binding) {
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if (binding instanceof ReturningHelper && driver) {
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// returning helper uses always ROWID as string
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return new driver.OutParam(driver.OCCISTRING)
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}
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if (typeof binding === 'boolean') {
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return binding ? 1 : 0
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}
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return binding
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})
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}
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})
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module.exports = Client_Oracle
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