… in ACTION!

The next generation application platform for business

Embarcadero Reinvents Business

Application Development!

Pawel Glowacki

European Technical Lead for Delphi and RAD Studio

http://blogs.embarcadero.com/pawelglowacki

Agenda

• 0830-0900 Registrations • 0900-0915 Embarcadero Overview • 0915-0930 Introduction to AppWave • 0930-1030 RAD Studio XE2 Overview • 1030-1045 Coffee break • 1045-1145 FireMonkey Deep Dive • 1145-1215 Delphi 64-bit and VCL Styles • 1215-1330 Lunch & coffee • 1330-1400 LiveBindings Deep Dive • 1400-1430 RAD Cloud Services • 1430-1500 Q&A

Embarcadero Overview

Embarcadero provides

database professionals

and application developers

with award-winning software tools

to design, build and run their systems

in the environment they choose

Who is Embarcadero?

Developers, DBAs, and

Architects Embarcadero Has You Covered

Introduction to AppWave

RAD Studio XE2 Overview

The ultimate application development suite for Windows,

Macintosh, Mobile, and Web

Fast Native applications for Windows, Macintosh, Web and Mobile

• Write app once, compile for multiple platforms

• Data-rich, Component-based

• Delphi and C++ native code performance

• Delphi for 64-bit Windows

• VCL Styles

• RadPHP for full visual web development

Introducing

• Stunning HD and 3D Business Applications

• Native Power and Performance • Connect with any Data

and Services • Full Suite of UI Controls • Visualize Live Data • Styled Vector UIs

without coding • Communicate with Animations • No-Code Hardware Effects

The Next Generation Business Application Platform

Applications that Connect Everywhere

• High-speed connectivity to popular databases

• Multi-tier applications

• Clients on multiple computers and devices

• Connect to the world of data, services, and the cloud

Mobile choices for you and your users

• Native mobile apps for DataSnap – iOS, Android, Blackberry,

and Windows Phone 7

– Delphi and C++Builder DataSnap Servers

• Mobile-optimized PHP web apps – Web apps that look great

– Web apps that work great on mobile devices

– Package applications for distribution

– Sell on Apple App Store and Android Marketplace

And one more thing…

Create native iOS apps

• Use the RAD Studio XE2 IDE

• Create a Delphi FireMonkey application

• Compile for iOS

• Run on iPhone, iPad, iPod Touch

• Your rich app, your rich data, everywhere

Demonstrations

RAD Studio XE2

…and more!

Delphi XE2

The fastest way to build native Windows, Mac and iOS applications

New in Delphi XE2

64-bit Windows development

Target Windows, Mac, and iOS

Create visually stunning applications

VCL Styles Connect with more data and services

New and updated tools including Fast Report and

Documentation Insight

C++Builder XE2

Rapid visual C++ development environment

New in C++Builder XE2

Target both Windows and Mac

Create visually stunning applications

VCL styles Connect with more data and services

New and updated tools including Fast Report

C++ audits and metrics

RadPHP XE2

The fastest way to build applications for Web, Facebook and mobile

New in RadPHP XE2

JQueryMobile visual, component-based

development of mobile optimized web pages

Create iOS and Android applications that you can sell on

the Apple and Android app stores

Zend Framework components for email,

feeds, Google docs and more

Embarcadero Prism XE2

Pascal development for .NET and Mono

New in Prism XE2

• All new Oxygene Compiler 5.0 from RemObjects

• Inline errors in editor with details, ranges & notes

• Live compiler errors in the code editor

• Fix-It support for selected new errors

• Language soft interfaces and duck typing

• Anonymous interface implementation

• Enhanced Oxidizer integration

RAD Studio XE2 Developer Toolbox

Quickly design and generate reports with FastReport

Deploy high performance database applications with

InterBase XE

Incorporate graphs and charts using TeeChart (VCL & FireMonkey)

Document your Delphi code with Documentation Insight

RAD Studio XE2 Developer Toolbox

Compare files with Beyond Compare differ

Ensure high performance with AQtime

Automate your build process with FinalBuilder

Build Web applications with IntraWeb

RAD Studio XE2 Developer Toolbox

Locate problems more quickly with CodeSite logging

Add a professional look with glyFX Icon Library

Use InstallAware to create your software installers

Get a jump start on component-based internet development with

IP*Works

RAD Studio XE2 Developer Toolbox

Create reports with Rave Reports

Indy (Internet Direct) – Internet component suite for popular

internet protocols

Partner DVD available online with even more free tools!

RAD Studio XE2 Editions for Every Developer

• Starter (Delphi/C++Builder)

• Professional

• Enterprise

• Ultimate

• Architect

RAD Studio XE2

• Deliver Fast Native Applications on Windows, Mac, Web and Mobile

• Speed Up Your Development Process with RAD

• Create Visually Stunning and Interactive Business Applications

• Build Applications that Connect Everywhere

• Break Free from Grids – Visualize Live Data

The ultimate application development suite for Windows, Mac, mobile and Web

Coffee Break

FireMonkey Deep Dive

The Next Generation

of Business Application Development

• Media and graphics Rich user experiences

• Intuitive and interactive – easy to learn

• Simulated real world physics

• Touch and motion interaction

Consumer Software Renaissance

Business/Industry Software Stuck in Past

• 90’s Windows user experiences

• Confined to mouse/keyboard interaction

• Complex to learn - slow to use

Key Markets

• ISV’s / Packaged Software

• Healthcare / Medical

• Manufacturing

• Financial Services

• Telecommunications

• Energy

• Aviation & Automotive

• BioSciences

• Pharmaceuticals

• Utilities

User Experience

VCL

MFC

UE Performance

UE

Ric

hn

ess

Business SW is stuck here

FireMonkey

Introducing… FireMonkey!

FireMonkey

• Rich Application Platform for Business

• Native CPU and GPU performance

• Built-in Enterprise Database connectivity

• Windows, Mac, and iOS

FireMonkey is not …

Managed RIA

HTML5/CSS3 Game Engine

FireMonkey is… App Development Platform

Delphi C++Builder

Windows Mac OS iOS

VCL and FireMonkey

Win Mac iOS

VCL

FM

Native CPU/GPU Application Platform

• Compile natively to Windows, Mac, and iOS

• Application, Database, and Animation are CPU powered

• All UI, Graphics, and Effects are GPU powered

HD Forms

• High performance GPU powered Scalable Vector Uis

• Maximum resolution on any device

• Hundreds of visual UI components

• GPU based Style Engine to control UI look & feel

• HUDs with transparencies and transition effects

3D Forms

• GPU powered 3D Forms

• Hardware based lighting, textures, and animation

• 3D Forms can contain HD UI elements and effects

Effects & Animation

• 50+ Photoshop-like GPU Effects

• Simultaneous multiple effects without performance hit

• Path based animation for all HD and 3D UI and graphics

FireMonkey Overview

• Cross-platform

• Modern themed/skinned UIs

• Real-time image and animation effects

• Direct2D, D3D, Quartz and OpenGL

• Native Delphi and C++

• 100% Object Pascal Framework

FireMonkey technology

• Mac

• HD use Quartz

• 3D rendering on Mac is OpenGL

• Windows

• Direct2D for HD

• Direct3D for 3D

• FireMonkey use GDI+ for HD vector forms/controls, when Direct2D is not available

“FireMonkey” – HD, 3D, and GPU

• FireMonkey takes advantage of GPU whenever possible

• HD Form can be rendered on a computer without a GPU with a few restrictions: – No TViewport3D, No Shader based Filters

• A 3D Form requires a GPU - performs sophisticated transitions and manipulations of the user interface…

… in other words, a 3D form may be the best

choice for building a sophisticated HD user interface

“FireMonkey” Architecture

• TFmxObject = class(TComponent) – Create, destroy and release object – Cloning, storing and loading object from a stream – Child object manipulations (add, remove, search) – Free notifications – Abstraction layer for tab order – Support for FireMonkey resources – Support for FireMonkey animations

• IControl

– Handles Focus, Mouse and Keyboard events – Implemented by TControl and TControl3D

“FireMonkey” Architecture

• IRoot – Interface for top-level containers – Handles Focused, Captured, Active controls – Implemented by TCustomForm

• IScene

– Container interface for 2D objects – Implemented by TForm, TCustomLayer3D

• IViewport3D

– Container interface for 3D objects – Implemented by TForm3D, TViewport3D

FireMonkey Styles

• FireMonkey Stylebook – Any object inherited from TBaseObject – Set StyleName to identify – Found using FindStyleResource method from parented object – Stored In / Loaded From a stream file

• FireMonkey Styles – A collection of FireMonkey resource style – WPF type of implementation – Styles can be inherited, saved, loaded – Look and Feel style files for Win7, MacOS, iOS and custom

themes

“FireMonkey” – Animation

• Used to modify property values over time

• Machine speed independent

• Can be looped and / or reversed

• Can follow a variety of time / value curves

• Can be triggered by MouseOver, Focus, Visibility, etc.

“FireMonkey” – Effects / Filters

• Can be applied to bitmaps

• Can be applied to controls

• Can be triggered by MouseOver, Focus, Visibility, etc.

• GPU shader based implementation

3D Programming

• One object model to target multiple platforms

• FM uses right-handed orientation in 3D

• Hardware acceleration

– Windows – DirectX

– MacOS – OpenGL

– iOS – OpenGL ES

FireMonkey and Cross Platform

• FM is a platform that supports – RTL – GUI – Database – Operating System

• Compile / Run on all platforms we support *

• * subset for mobile platforms

Fire Monkey - Demos

• Your first FireMonkey App

• Windows

• Mac OS X

• HD / 3D

• GPU/Shaders

Summary

• FireMonkey - The Next Generation Business Application Platform

• Fully harness the powerful GPU graphics hardware • Rapidly build visually spectacular applications • Invest in one platform and deploy to numerous OS-s • Delphi and C++ compiled, native executable • Fully programmable animations and effects

• Your imagination is the only limit !!!

• Go FIREMONKEY !!!

Live Bindings

Deep Dive

What is LiveBindings?

“Provides a way for developers to create a

read/write link between components/objects and their data in the the application.”

LiveBindings Overview

• Supported by FireMonkey and VCL

• Based on relational expressions, called binding expressions

– Can be unidirectional or bidirectional

• Can be used programmatically or visually

• Is all about control objects and source object

LiveBinding Engine

• Allow developers to create live binding in run-time between components/objects at design-time.

• The LiveBinding visual components use the engine: – TBindScope for bindings to components

– TBindScopeDB for bindings to databases

– TBindingsList for holding of binding lists

• A number of conversion services in the box and allows to create new conversion service

• Automatic updates

– Expressions are automatically re-evaluated when a variable (e.g.; property) referenced by an expression has changed value.

– Requires external notification

LiveBinding components

• TBindScopeDB – magic binding – Bind data from DataSet to components

– “Link to DB Field” wizard create the expressions to bind the data from DataSet to components

• TBindScope – non-dataset binding – Bind data between components/objects

– Support single object or collection of objects

• TBindingsList – Hold the binding lists

– Manage the list of methods and output converters used by the expression

LiveBinding Scenario

CONTROL TLabel

SOURCE TField

LiveBinding Engine

Control Expression Text

Source Expression DisplayName

Binding Expression Editor

64-bit and VCL Styles

Deep Dive

Delphi 64-bit

What’s the same?

• Integer, Longint, Cardinal – still 32bits

• Int64, UInt64 – still 64bits

• UnicodeString, AnsiString, WideString

• Exceptions

• Runtime Library (RTL)

• SysUtils, Classes, etc…

Delphi 32 and 64-bit Type Sizes Signed types Delphi/32 Delphi/64

ShortInt 1 byte

SmallInt 2 bytes

LongInt 4 bytes

Integer 4 bytes

Int64 8 bytes

Unsigned types Delphi/32 Delphi/64

Byte 1 byte

Word 2 bytes

LongWord 4 bytes

Cardinal 4 bytes

UInt64 8 bytes

What’s different?

• NativeInt, NativeUint – 64bits • Pointer (all pointers) – 64bits • Dynamic Arrays – 64bit indexing • Floating point math - Double

Delphi 32 and 64-bit Type Sizes Signed types Delphi/32 Delphi/64

NativeInt 4 bytes 8 bytes

Unsigned types Delphi/32 Delphi/64

NativeUInt 4 bytes 8 bytes

Delphi 32 and 64-bit Pointer Types Pointer types Delphi/32 Delphi/64 Pointer String Class instance Class reference Interface AnsiString 4 bytes 8 bytes WideString UnicodeString Procedure pointer Dynamic array PAnsiChar PWideChar PChar

The CPU – Programming model

Instructions and Addresses • 64 bit address space

• Limited by physical hardware

• Same core Intel instruction set

• New REX prefix for 64bit instructions

• RIP-relative addressing

• Jumps – relative +/- 2GB

• 16 byte stack alignments

• Online resources

• http://msdn.microsoft.com/en-us/magazine/cc300794.aspx

• http://msdn.microsoft.com/en-us/library/7kcdt6fy.aspx

What does this mean for Delphi?

Don’t panic!

Delphi 64-bit on Windows

• Same Windows API

– CreateWindowEx, PeekMessage, etc..

• Same Delphi RTL

– SysUtils, Classes, Generics.Collections, etc…

• Same VCL

– Forms, Graphics, Controls, Menus, etc..

• Category Identifier dcc32 dcc64

• Compiler DCC defined defined VER230 defined defined

• Platform MSWINDOWS defined defined WIN32 defined not defined WIN64 not defined defined

• CPU CPU386 defined not defined CPUX86 defined not defined

CPUX64 not defined defined

• Availability ASSEMBLER defined defined UNICODE defined defined

Pre-Defined Conditionals

Delphi 64-bit on Windows – some gotcha’s • SizeOf(Pointer) <> SizeOf(Integer)

– Integer<->Pointer casts will break in 64bit

– SizeOf(THandle) = SizeOf(Pointer)

– All Handles = SizeOf(Pointer) (HWND, HDC, etc..).

• All code in process must be 64bit

– Must have 64bit versions of external non-Delphi libraries (DLLs)

• One, and only one, calling convention

– register, pascal, cdecl, stdcall are ignored.

• safecall is still “special”

• Old “pointer math” code may break

– Works in 32 and 64bit: MyPtr := PByte(P) + 10;

• TList’s internal FList is now a TPointerList. Used to be a PPointerList. Removing ^ should be sufficient to port from 32-bit to 64-bit.

• Tag property is now a NativeInt (32-bit vs 64-bit)

Delphi 64-bit on Windows – some gotcha’s • Inline Assembly

– Cannot mix asm blocks with Pascal code

– Only procedural level asm blocks supported

– Stack must be 16-byte aligned at each call instruction

– Define locals for temp storage

– Do not modify the RSP stack pointer

– New unified calling convention. First 4 parameters in registers, RCX, RDX, R8, R9 (or XMM0-XMM3)

• Exception unwinding

– No change for pure Delphi code. Exceptions function identically.

– Inline Assembly can cause exception unwinding to fail if not properly written.

• SHL/SHR – 32-bit values (Integer et al) will only shift in 32-bit space. 64-bit values will of course shift in 64-bit space.

• No Extended type in 64-bit. Use TExtendedRec80 if necessary (binary files with Extendeds in them for instance)

Windows API gotcha’s • SetWindowLong / GetWindowLong should

be replaced by SetWindowLongPtr / GetWindowLongPtr for GWLP_HINSTANCE, GWLP_WNDPROC, etc… as they return pointers and handles. – Pointers passed to SetWindowLongPtr should

be type-casted to LONG_PTR and not to Integer / Longint.

• SetWindowLong mapped to SetWindowLongPtr in Windows.pas. – Calls to our declaration of SetWindowLong are

safe, as long as they are cast correctly.

Windows API gotcha’s (con’t) • Use explicit casts to WPARAM and LPARAM

where appropriate. – Example: Passing pointers through

SendMessage SendMessage(hWnd, WM_SETTEXT, 0, LPARAM(@MyCharArray));

• Use LRESULT to cast message results – Example: Message.Result := LRESULT(Self);

• Message cracker records (TWMxxx) changed – Alignment changes and field-size changes

What can I do today? • Find all Integer<->Pointer casts, including

Integer<->instance casts. – Check for Pointer size assumptions

• Ensure external dependencies are also 64bit – Image/bitmap libraries – Hardware interfaces libraries – ActiveX controls

• Consider rewriting Assembler in pure-Pascal – Better future portability (think ARM CPUs…) – Rely more on algorithmic performance rather

than raw assembly performance.

• Make sure you know what bit-size (32 vs 64) you’re shifting with SHL/SHR.

VCL

What’s New in the VCL?

• 64-bit

• VCL Styles

VCL Styles

Themes in Delphi/C++Builder XE and earlier

• Only 1 "theme" supported (native Windows)

• 3rd party products required to change look of VCL apps

• Current “skinning" products for Windows common controls – Requiring hooking WndProc's

– Intercepting control messages

• Separate controls needed for "custom" controls – TCustomControl / TGraphicControl descendants

VCL Styles

• Multiple styles provided/supported

• Custom style file creation

• Custom style classes

• Pluggable style engine

• Works with TWinControl and TGraphicControl descendants

VCL Styles • TThemeServices replaced by TCustomStyleServices

– Extends TThemeServices with more parts, states and methods

• TStyleEngine

– Processes control messages

– Calls StyleServices to render parts

• TStyleManager

– Provides services such as

• LoadFromFile

• LoadFromResource

• RegisterStyle

• RegisterStyleClass - Associates file extension with Style class

• SetStyle

• Style selection

• Style engine selection

• Providing custom styles

– Create style file (using provided style building tool)

– Implement TCustomStyleServices descendant and render parts directly

What can’t be styled?

• TMainMenu/TPopupMenu (main menu bar is styled, but not the pop-up parts)

• Ribbon controls

• OS dialogs

Project Options | Appearance

From this…

To this!

VCL Style Designer

Typical Usage

• Uses Vcl.Styles, Vcl.Themes;

• TStyleManager.SetStyle(‘Ruby Red Graphite’);

RTL

RTL

What’s new in the RTL?

• 64-bit for Windows!!! • MacOSX - No COM, No ActiveX. :)

– Windows specifics has been mapped to MacOSX equivalents wherever possible

• TOSVersion – Architecture (32/64-bit), Platform (Win/Mac), Major, minor OS version, Service Pack info

• TFormatSettings – replaces global format setting variables (that don't exist on MacOSX)

• TZipFile - cross platform Zip support • SymLinks in IOUtils and SysUtils file handling routines

– class function TFile.CreateSymLink(const Link, Target: string): Boolean; • TLoginCredentialService

– Extensible framework agnostic login credential services with support for callbacks (success, failure, etc)

• TPoint, TRect, TSize - new methods and properties • TPointF, TRectF, TSizeF - floating point versions

TFormatSettings (SysUtils)

type TFormatSettings = record // System.SysUtils … CurrencyString: string; CurrencyFormat: Byte; CurrencyDecimals: Byte; DateSeparator: Char; TimeSeparator: Char; ListSeparator: Char; ShortDateFormat: string; LongDateFormat: string; TimeAMString: string; TimePMString: string; ShortTimeFormat: string; LongTimeFormat: string; ShortMonthNames: array[1..12] of string; LongMonthNames: array[1..12] of string; ShortDayNames: array[1..7] of string; LongDayNames: array[1..7] of string; ThousandSeparator: Char; DecimalSeparator: Char; TwoDigitYearCenturyWindow: Word; … end;

TZipFile (System.Zip)

type

TZipFile = class

..

public

…

procedure Open(ZipFileName: string; OpenMode: TZipMode); overload;

procedure Open(ZipFileStream: TStream; OpenMode: TZipMode); overload;

procedure Close;

procedure Extract(FileName: string; Path: string = ''; CreateSubdirs: Boolean=True); overload;

procedure Extract(Index: Integer; Path: string = ''; CreateSubdirs: Boolean=True); overload;

procedure ExtractAll(Path: string = '');

procedure Read(Index: Integer; out Bytes: TBytes); overload;

procedure Read(FileName: string; out Stream: TStream); overload;

procedure Read(Index: Integer; out Stream: TStream); overload;

procedure Add(FileName: string; ArchiveFileName: string = '';

Compression: TZipCompression = zcDeflate); overload;

…

property FileCount: Integer read GetFileCount;

property FileNames: TArray<string> read GetFileNames;

…

end;

TLoginCredentialService

type

TLoginCredentialService = class sealed

public const

Default = '';

DefaultUsrPw = 'DefaultUsrPw'; // do not localize

DefaultUsrPwDm = 'DefaultUsrPwDm'; //do not localize

…

strict private class var

FLoginHandlers: TStringList;

strict private

class constructor Create;

class destructor Destroy;

class function IndexOfHandler(const Context: TLoginCredentialEvent): Integer;

public

class procedure RegisterLoginHandler(const Context: string; const HandlerEvent: TLoginCredentialEvent); static;

class procedure UnregisterLoginHandler(const Context: string; const HandlerEvent: TLoginCredentialEvent); static;

class function GetLoginCredentialEvent(const Context: string): TLoginCredentialEvent; static;

class function GetLoginCredentials(const Context: string; Sender: TObject; const Callback: TLoginEvent): Boolean; overload; static;

class function GetLoginCredentials(const Context: string; const Callback: TLoginFunc): Boolean; overload; static;

class function GetLoginCredentials(const Context: string; var Username, Password: string): Boolean; overload; static;

class function GetLoginCredentials(const Context: string; var Username, Password, Domain: string): Boolean; overload; static;

end;

TPointF (System.Types)

type TPointF = record X: Single; Y: Single; public constructor Create(const P: TPointF); overload; constructor Create(const X, Y: Single); overload; constructor Create(P: TPoint); overload; class operator Equal(const Lhs, Rhs: TPointF): Boolean; class operator NotEqual(const Lhs, Rhs: TPointF): Boolean; class operator Add(const Lhs, Rhs: TPointF): TPointF; class operator Subtract(const Lhs, Rhs: TPointF): TPointF; function Distance(const P2: TPointF): Double; procedure SetLocation(const X, Y: Single); overload; procedure SetLocation(const P: TPointF); overload; procedure SetLocation(const P: TPoint); overload; … function Add(const Point: TPointF): TPointF; overload; function Add(const Point: TPoint): TPointF; overload; function Subtract(const Point: TPointF): TPointF; overload; function Subtract(const Point: TPoint): TPointF; overload; function IsZero: Boolean; function Ceiling: TPoint; function Truncate: TPoint; function Round: TPoint; end;

C++

What’s New in C++?

• FireMonkey

• Live Bindings

• DataSnap

• Extended RTTI

• Audits and Metrics

Demos

Demos

• 32-bit/64-bit Stylish Fish Facts

• C++ Stylish Fish Facts

• Stylish Live Bindings Fish Facts

DataSnap and Cloud

Deep Dive

Agenda

• RAD Cloud Overview

• DBExpress

• New Cloud API

• What’s new in DataSnap

Cloud API

What is the Cloud API?

“Delphi API for accessing cloud application services from Amazon and Microsoft Azure.”

Cloud API service support

Storage Azure Blobs Service Amazon S3

Table Azure Table Service SimpleDB

Queue Azure Queue Service Amazon SQS

Name conventions

• Amazon and Microsoft use different names for the same things

Container = Bucket

Blobs = Object

Page = Multipart

ACL = ACL (Access Control List)

Microsoft Azure

• Blob Storage – Unstructured storage – Defined Container – For storing large pieces of data such as: Images, Video,

Documents, etc.

• Azure Tables – Scalable structured storage – NOSQL type tables – Entities stored in a table – Different set of properties made up of different types

• Queues – Persistent asynchronous messaging – Each message is up to 8kb long

Amazon WS

• Simple Storage Service (S3) – Blob Storage – Unstructured storage – Defined Container – For storing large pieces of data such as: Images, Video, Documents,

etc.

• SimpleDB - Tables – Scalable structured storage – NOSQL type tables – Entities stored in a table – Different set of properties made up of different types

• Simple Queue Service (SQS) – Persistent asynchronous messaging – Each message is up to 64kb long

Deploying to the Cloud

• Deployment manager supports:

– Microsoft Azure

– Amazon EC2

What's new in DataSnap

What’s new in DataSnap

• Enhancements

– Server

– REST Interfaces

– Callback

– Authentication Manager

• New DataSnap Monitoring and Control

Server

• Proxy info support for DataSnap HTTP connections in TSQLConnection and TDSRESTConnection

• New TDBXChannelInfo.DBXClientInfo (TDBXClientInfo record) provides:

– IP Address

– Protocol

– Application Name (when possible) – only for HTTP

HTTPS Support

• For Stand-alone DataSnap servers

• For Stand-alone WebBroker servers

• DataSnap Wizards updated with HTTPS support

Session Manager

• Session support for TCP/IP protocol

• Support for store and retrieve TObject in Sessions

• Sessions created and destroyed with the TCP/IP protocol now notifies the AddSessionEvent and RemoveSessionEvent

• Support for multiple Callback Tunnels on DataSnap REST Interface

Callback Tunnel Manager

• TDSCallbackTunnelManager class in DSServer unit

• Allows tracking when:

– Callback is added or removed

– Tunnel is created or closed

Callbacks

• Heavyweight callbacks now support broadcasting to specific callbacks

• GetAllChannelNames added to the DSServer to get the name of all callback channels

Callback client side events

• Notifications whenever the manager’s tunnel is opened or closed, or when callbacks are added to it or removed from it. Available for:

– Delphi DBX Client Events

– Delphi REST Client Events

– JavaScript REST Client Events

Delphi DBX Client Events

• TDSClientCallbackChannelManager component, event OnChannelStateChange

• Method signature: (Sender: TObject; const EventItem: TDSClientChannelEventItem);

• TunnelClosedByServer event type for connections closed by the server or connection loss.

Delphi REST Client Events

• TDSRestClientChannel component, event OnChannelStateChange

• Method signature: (Sender: TObject; const EventItem: TDSRESTChannelEventItem);

• ChannelClosedByServer event type for abrupt connection loss with the server

JavaScript Client Events

• Set an event function to be invoked when changes happen to the channel or one of its callbacks

var channel = new ClientChannel (clientID, channelName);

channel.onChannelStateChange = HandleChannelEvent;

• If the server gracefully closes the channel, then the client gets an event type of “ClientChannel .EVENT_CHANNEL_STOP”

• If the connection is abruptly lost, client will get an event type of “ClientChannel. EVENT_SERVER_DISCONNECT”.

JavaScript session Support

• initSessionData function (in serverFunctionExecutor.js) now optionally takes a second parameter.

• The parameter will be prefixed to the general cookie ID (dssessionid).

• Allows you to have complete control over which application uses which session ID/cookie.

JSON results and REST calls

• OnResult event has been added to the TDSHTTPWebDispatcher and TDSHTTPService components

• Allow to change the JSON result format in REST calls.

• Method signature:

(Sender: TObject; var ResultVal: TJSONValue; const Command: TDBXCommand; var Handled:

Boolean);

Query parameters in REST calls

• GetInvocationMetadata().QueryParams

• Returns a TStrings which holds a key value pairs for all of the query parameters passed in through the URL of the REST call

DataSnap Monitoring and Control

DataSnap Monitoring and Control

“DataSnap servers in XE2 are able to easily monitor connections, and close any TCP

connection they wish.”

What you can do

• Take control over the client connections

• Monitor client requests

• Limit the number of requests per connection

• Improve Security

• More…

How it works?

• TDSTCPServerTransport components has two new events:

– onConnect

– onDisconnect

• Connections are linked with a Session ID

Listening to TCP/IP events

Detecting Graceless Disconnects

• By default, the OnDisconnect event will not be notified if the client abruptly loses his internet connection

• This behavior depends on OS configuration

• Use TDSTCPChannel methods to control this behavior for each connection:

– EnableKeepAlive

– DisableKeepAlive

How to use EnableKeepAlive

• If the connection is idle for 10 seconds, then send a keep-alive packet to check if the client is still there.

Event.Channel.EnableKeepAlive(10000);

How to use EnableKeepAlive

• If the client doesn’t respond the OS will resend the packet X number of times (Win 7 will retry 10 times).

• You can specify the number of milliseconds to wait between retries if a client doesn't respond to a packet.

Event.Channel.EnableKeepAlive(10000, 100);

KeepAlive Enablement

• Available through TDSTCPServerTransport component

• Three new published properties

– KeepAliveEnablement - (Set: Default, Enabled, Disabled)

– KeepAliveTime - Integer Milliseconds value

– KeepAliveInterval - Integer Milliseconds value

How to use DisableKeepAlive

• Get the associated Channel for the given connection and call:

DisableKeepAlive;

Closing Client Connections

• Connection can be closed any time

• Channel provide the connection instance

//Get the associated Channel for the given connection, and if successful close it

if FConnections.TryGetValue(Connection, Channel) then

Channel.Close;

Demo

• Tracking all the TCP/IP connections and their corresponding sessions

• How to manually close a TCP/IP connection from the server

• How to detect when a client has lost internet connectivity while connected.

Mobile and Connectors

Deep Dive

Mobile Connectors for DataSnap

• DataSnap Mobile Connectors

– iOS – Objective C

– Android – Java

– BlackBerry – Java

– Windows Phone 7 – C#, Prism

DataSnap Mobile Connectors Demonstration

RadPHP XE2 – Mobile App

RadPHP XE2 – Phone Gap

Tools | Wizard for PhoneGap

Summary

• FireMonkey - The Next Generation Business Application Platform

• Fully harness the powerful GPU graphics hardware • Rapidly build visually spectacular applications • Invest in one platform and deploy to numerous OS-s • Delphi and C++ compiled, native executable • Fully programmable animations and effects

• Your imagination is the only limit !!!

• Go FIREMONKEY !!!

RAD Studio XE2

• Deliver Fast Native Applications on Windows, Mac, Web and Mobile

• Speed Up Your Development Process with RAD

• Create Visually Stunning and Interactive Business Applications

• Build Applications that Connect Everywhere

• Break Free from Grids – Visualize Live Data

The ultimate application development suite for Windows, Mac, mobile and Web