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Previous Chapter

Chapter 10. Web services, iteratees, and WebSockets

List of Figures

Index

[SYMBOL][A][B][C][D][E][F][G][H][I][J][K][L][M][N][O][P][Q][R][S][T][U][V][W][X][Y]

SYMBOL

; (semicolon) ! (exclamation point) ? (question mark) ( ) parentheses { } curly braces (backslash) < > brackets 401 Unauthorized response 501 Not implemented

A

Accept-Language header Action class action methods, HTTP action-based MVC AHC (Async HTTP Client) Akka library, 2^nd, 3^rd, 4^th Amazon Simple Storage Service. See S3. and operator, 2^nd Anemic Domain Model anti-pattern AnyContent parser, 2^nd Apache app directory, Play application appDependencies property application cache application servers application.conf file application.lang value application.secret configuration property, 2^nd application/json content type, 2^nd application/x-www-form-urlencoded content type, 2^nd apply method, 2^nd, 3^rd, 4^th, 5^th apt packages architectural perspective, HTTP requests architecture of single-page applications as method asJson method, 2^nd asOpt method asset pipeline assets directory asText method asXml method Async calls, 2^nd Async HTTP Client. See AHC. asynchronous jobs asynchronous results, 2^nd AsyncHttpClient class AsyncResult class, 2^nd authentication vs. authorization web service requests alternative authentication methods creating actions for extracting credentials from request overview, 2nd using basic authentication authorization Authorization header AuthScheme interface automatic filters

B

backslash ( ) bar code image details page details page template product catalog example BarcodeCache.scala file Barcodes.scala file, 2^nd BarcodesController.scala file BarcodesPlugin.scala file basic authentication Berners-Lee, Tim bidirectional communication. See WebSockets. binary data, HTTP response body bind method, 2^nd bindFromRequest method, 2^nd blocks of Scala code in view templates body parsers built-in body parsers, 2^nd file upload body parser file upload to S3 body parser importance of overview BodyParser trait, 2^nd boolean mapping brackets < >, escaping broadcast method built-in body parsers ByteBufferWrapper class bytecode manipulation

C

caching assets controller support Cache API HTTP ETags in session cookies with web services Call class capitalize method cascading style sheets. See CSS. case classes certificate signing request. See CSR. CGI (Common Gateway Interface) chat application using WebSockets, 2^nd checkbox helper, 2^nd checked mapping _class symbol client-side scripts for single-page applications Cloud Foundry cloud providers, deploying to Cloudbees code, wrapping in transactions .coffee extension CoffeeScript assets, 2^nd Comet, bidirectional communication using command-line output when creating Play application when running Play application comments Common Gateway Interface. See CGI. compilation errors compiled templates compressing assets with gzip Concurrent class conf directory, 2^nd configuration API configuration file creating default configuration environment variables and references including files merging values from multiple files overriding values or entire file console constraint.required key Constraints class constraints in mappings consumer, defined ConsumerKey class Content class Content-Type header, 2^nd, 3^rd, 4^th contenteditable attribute ContentTypeOf ContentTypes trait continue state controller actions Controller class controllers package Cookie class Cool URIs Don’t Change (Berners-Lee) credentials extracting from request key using different for development environment cross-site scripting. See XSS. CSR (certificate signing request) CSS (cascading style sheets) curly braces { }

D

Data Access Object (DAO) defined findAll finder function persistent storage and database-centric design date mapping datetime input type Deadbolt module deb packages debugging HTTP responses def keyword default database default Welcome page, Play application DELETE requests, 2^nd dependencies development environment credentials development.conf file directory structure, Play dist task .do extension done state downtime, upgrading without dynamic page-specific parts, layout template

E

ean13BarCode helper function eclipse commands, Play console email mapping, 2^nd empty values in JSON enabled method, 2^nd enctype attribute Entity Tags. See ETags. EntityTooLarge response enumeratees Enumerator class enumerators applying to iteratees types of, 2^nd EOF (end of file) error state _error symbol errors messages in Play type errors in templates errors method ETags (Entity Tags), 2^nd evolutions exclamation point ( ! ) execution context expressions in view templates Extensible Markup Language. See XML.

F

FeedableBodyGenerator class FieldConstructor class FieldElements class file body parser file extensions, 2^nd file upload body parser creating simple, 2^nd uploading files to S3 file uploads findAll finder function finder method details page product catalog example finite state machines, iteratees as Firefox browser, debugging in first element of collection :first-child pseudo selector Flash class flash data, and HTTP response headers flash scope, 2^nd fold method, 2^nd, 3^rd fold, defined footer adding to layout template using templates for for comprehensions defined syntax in templates using curly braces with foreach method form helper format method format.boolean key format.numeric key formatNullable method Formatter class forwardfor option Fowler, Martin front proxy full-stack framework, 2^nd futures, 2^nd, 3^rd

G

$.get function GET method, 2^nd, 3^rd get method getAs method getErrors method getOrElse method Getting Real GitHub Pages Global object globalError method Google Chrome browser, debugging in Google Closure Compiler, 2^nd Grizzly provider Groovy templates, 2^nd gzip compression

H

H2 in-memory database HAProxy, 2^nd hasErrors parameter, 2^nd HATEOAS (“hypermedia as the engine of application state”) HEAD request header, using templates for HeaderNames class headers, HTTP response content type flash data session data setting cookies _help symbol helpers generating HTML forms using input helpers Heroku Hibernate HOCON (Human Optimized Config Object Notation) specification Homebrew packages, 2^nd HTML-first templates HTML templates JavaScript widgets user-interface component systems http-server-close option http.port property https.keyStore property https.keyStorePassword property https.port property Human Optimized Config Object Notation. See HOCON. “hypermedia as the engine of application state”. See HATEOAS. Hypertext Markup Language. See HTML. Hypertext Transfer Protocol. See HTTP.

I

i18n. See internationalization. _id symbol ignored mapping, 2^nd implementation implicit conversions in controllers implicit keyword implicit parameters in view templates imports, relative including files, 2^nd indentation in CoffeeScript index of collection element _index value input helper inputDate helper inputFile helper, 2^nd inputPassword helper inputRadioGroup helper inputText helper, 2^nd insert statement, executing International Article Number codes. See EAN. internationalization in view templates message files for overview using in application vs. localization _isFirst value _isLast value isLeft method ISO, 2^nd Iteratee class, 2^nd

J

Japanese Article Number (JAN) Java EE (Java Enterprise Edition) versus “lasagna” architecture JSF (JavaServer Faces) Java Persistence API. See JPA. Java Virtual Machine. See JVM. java.security package JavaScript Object Notation format. See JSON. JavaServer Faces. See JSF. JavaServer Pages. See JSP. JBoss Netty JBoss Seam jobs asynchronous jobs asynchronous results and suspended requests scheduled jobs JPA (Java Persistence API) jQuery JsArray class JsBoolean class JsError class, 2^nd JSF (JavaServer Faces) JsList class JsNull class, 2^nd JsNumber class JsObject class JSON (JavaScript Object Notation) authenticating web service requests alternative authentication methods creating actions for extracting credentials from request overview using basic authentication consuming combining with formatters overview reusable consumers converting model objects to fetching data from client formatters combining with consumers custom overview generating strings from HTTP response body inception objects, in Scala sending data to server serving response as validating adding validation rules handling empty values mapping JSON structure to model overview returning validation errors using alternative JSON libraries json body parser JSP (JavaServer Pages) JsPath class, 2^nd JsString class JsSuccess class JsUndefined class JsValue class JVM (Java Virtual Machine)

K

key store kill command

L

L10N. See localization. Lang parameter, view template large responses, processing last element of collection :last-child pseudo selector layout template adding footer Left class LESS assets, 2^nd .less extension Linux, setting PATH system variable list method list tags load balancing logic, separating using templates longNumber mapping, 2^nd

M

Mac OS X, setting PATH system variable managed_src directory mapping method, 2^nd marshaling max constraint maxLength constraint merging values from multiple files MessageEvent class MessageFormat class Messages class, 2^nd messages file messages.es file messages.fr file messages.nl file min constraint minimal query, Squeryl minLength constraint mobile applications mobile first design model class defined design of relationship between schema and saving objects in databases model-view-controller pattern. See MVC. models package modules architecture of creating overview publishing, 2nd setting up repository testing writing code custom extracting whether to use defined listing of module-first application architecture third-party using moveTo method multipart/form-data content type, 2^nd multipartFormData body parser MultipartFormData class MVC (model-view-controller) architectural pattern

N

nested mappings nested query New I/O (NIO) API nginx NodeSeq library non-blocking I/O nonEmpty constraint nonEmptyText mapping, 2^nd null values number mapping, 2^nd, 3^rd

O

OAuth OAuthCalculator object mappings in forms API object notation, merging multiple values object-relation mapper. See ORM. of method onComplete method, 2^nd onmessage method onStart method, 2^nd onStop method, 2^nd optional mappings order by clause, Squeryl ORM (object-relation mapper), 2^nd overriding values or entire file

P

PaaS (platform as a service) page templates parentheses ( ) _parity value parse method, 2^nd parser combinators PATH system variable launching Play setting in Linux setting in Mac OS X setting in Windows pattern constraint pattern matching results, Anorm PDF module Perl persistence API persistence layer (data storage) Anorm defining model deleting data inserting data overview parsing results pattern matching results stream API updating data caching data configuring databases creating schema Data Access Object and saving model objects in databases Squeryl defining model entity relations handling transactions overview plugging in queries saving records PHP, 2^nd pick list controller template pidfile.path setting Pilgrim, Mark plain text representation, HTTP response body platform as a service. See PaaS. Play 1 forms API play command, 2^nd play new command play run command Play server play.api.Application.configuration class play.api.Configuration class play.api.data package play.api.data.Form class, 2^nd play.api.data.Form object play.api.data.format package play.api.data.validation package, 2^nd play.api.i18n package play.api.libs.iteratee package play.api.libs.json package play.api.mvc package play.api.Play.current play.plugins file, 2^nd play2-native-packager plugin play2-war-plugin PlayMagic class Plugin trait polling as bidirectional communication, 2^nd POST request privileged ports prod mode (production mode) product catalog example creating application details page adding parameters to controller action adding parameters to routes bar code image generation language localization model finder method view template new product form adding routes for saving input Form object language localization saving user input validating user input view template product list page controller action method language localization, 2nd layout template model replacing welcome page with HTTP redirect routes configuration stylesheet view template production mode, 2^nd production.conf file products parameter, view template products.coffee file, 2^nd, 3^rd, 4^th project directory, Play application providers public directory, Play application publish command publish-local command publishing modules publishTo setting, 2^nd PUT method, 2^nd, 3^rd, 4^th

Q

question mark ( ? )

R

reactive programming model readNullable method real-time status page using WebSockets, 2^nd receive method redefining properties redirect-after-POST pattern redirects defined response headers Redis module refactoring, defined regular expression, as constraint relative imports reload command, 2^nd render method RenderResult class repeat helper repeated mappings repositories for modules ReqeustToken class Request class, 2^nd request-response transactions, HTTP RequestHeader parameter requests “Hello world!” example methods for routing to actions constraining URL path parameters with regular expressions matching URL path parameters that contain forward slashes router configuration routing to controller action methods signing suspended resolver resource-oriented architecture resources_managed directory Response class ResponseHeader class Result class, 2^nd Right class routes configuring, 2^nd HTTP requests keeping neat product catalog example adding for saving input adding parameters to configuring reverse routing generated reverse-routing API in practice serving static content using routing requests to actions constraining URL path parameters with regular expressions matching URL path parameters that contain forward slashes router configuration routing, defined routes file, 2^nd, 3^rd, 4^th rpm packages Ruby on Rails run task

S

S3 (Amazon Simple Storage Service), 2^nd SAAS applications Safari browser, debugging in sample applications in module packages Sass module .sbt files sbt tool sbt-native-packager plugin scala.xml.NodeSeq library scalability, Web server ScalaTemplateCompiler.scala file scheduled jobs schema creating using evolutions defining using Squeryl script element scripts, for databases Secure Sockets Layer. See SSL. SecureSocial module securesocial.conf file select helper semicolon ( ; ) sender method seq method Seq[] type Session class session data defined HTTP response headers session-based authentication _showConstraints symbol _showErrors symbol signing requests SimpleResult class single method single-page applications architecture of authenticating JSON web service requests alternative authentication methods creating actions for extracting credentials from request overview using basic authentication creating client-side script model overview stylesheets template sending JSON data to server combining JSON formatters and consumers consuming JSON overview reusable consumers serving data to JavaScript client converting model objects to JSON objects custom JSON formatter defining web service interface fetching JSON data from client generating strings from JSON values JSON formatters JSON objects in Scala serving JSON response using custom formatter validating JSON adding validation rules handling empty values mapping JSON structure to model overview returning validation errors using alternative JSON libraries Slick sqlDate mapping SSL (Secure Sockets Layer) stage task start task starting Play console stateful relations, Squeryl stateless relations, Squeryl states for iteratees status codes, HTTP stopping Play console streaming responses defined processing with iteratee library String class stringify method stringly typed StringOps class Struts stylesheets for single-page applications subconfiguration, accessing success parameter, fold method

T

tagging functionality tags in view templates template engines advantages of type safety not type-safe example overview pros and cons type-safe example test data test directory, Play application testing modules text body parser text mapping, 2^nd text/json content type textarea helper, 2^nd threads, Squeryl @title Scala expression toFlatJson method toHtmlArgs method toJson method, 2^nd, 3^rd token-based authentication tolerant body parsers tolerantJson parser toString method, 2^nd toUpperCase method trait, 2^nd, 3^rd transactions, wrapping code in transform method tuple method Twitter Bootstrap, 2^nd Twitter REST API Typesafe config library

U

UI-centric design unapply method unbind method unbinding, defined uniform resource locators. See URLs. UPC (Universal Product Code) numbers upgrades without downtime upload action url method URL-centric design resource access resource-oriented architecture urlFormEncoded body parser user community user-interface component systems userIdCacheKey method UserService class using method UTF-8 encoding

V

val keyword validate method, 2^nd validation object ValidationError class value objects, domain data model var keyword verifying method version information, displaying in footer views package

W

WAR (Web application ARchive) Web Client Programming with Perl WebSockets advantages of, 2^nd chat application using, 2^nd real-time status page using webSocketURL method when method withAuth method withHeaders method WrappedRequest class Writable trait write method WS library, 2^nd WSRequestHolder class WWW-Authenticate header

X

X-Forwarded-For header XML (Extensible Markup Language) xml body parser XSS (cross-site scripting)

Y

yield keyword YouTube videos

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