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© 2002 Progress Software Corporation1Sim
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© 2002 Progress Software Corporation2Sim
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D I S C L A I M E R
““Products Under Development”Products Under Development”Technical PreviewTechnical Preview
This talk includes information about potential future products and/or product enhancements.
What I am going to say reflects our current thinking, but some information contained herein is preliminary and subject to change. Any future products we ultimately deliver may be materially different from what is described here.
In other words - you can’t believe everything I’m going to say.
The Web Services The Web Services Development ToolkitDevelopment Toolkit
J. Espen [email protected] Services Manager, Norway
© 2002 Progress Software Corporation4Sim
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AgendaAgenda
Architecture Transformation
Introduction OpenEdge, Web Services
WSTK Architecture
Developing & Deployment with the WSTK
Connection Management
Open Client Object Model
Demo.....
That's All Folks…
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ProgressProgress OpenEdge OpenEdge : : EnkeltEnkelt, , IntegrertIntegrert, , ÅpentÅpent
Progress Dynamics™
SonicMQ • SonicXQ
Web Services Dev. Toolkit
AppServer
WebSpeed Transaction Server
RDBMSDataServers
WebClient
WebSpeed
Open ClientGUI/ChUI
Progress4GL
ActuateCorVu
Report BuilderQuery/Results
Fa
tho
mT
M
Pro
Vis
ion
TM
Web
Sp
eed
W
ork
sho
p
Applications
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Architecture TransformationArchitecture Transformation
ClientServerClientServer
HostCentricHost
Centric
DistributedDistributed
AppServer
Client
Architecture Evolution
Application development and application architectures have had an interesting and sometimes painful evolution
Application development and application architectures have had an interesting and sometimes painful evolution
Process-OrientedApplications
Process-OrientedApplications
Business Process
Business Process
Business Process
• Service-Oriented Architecture (SOA) is the next-generation interoperation methodology
• Technologies such as Web services are a means to that end
• Service-Oriented Architecture (SOA) is the next-generation interoperation methodology
• Technologies such as Web services are a means to that end
© 2002 Progress Software Corporation7Sim
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Development TransformationDevelopment Transformation
ClientCentricClient
CentricHost
CentricHost
Centric
DistributedDistributed
AppServer
Client
Interface Drives the ProcessProcess Drives the Interface
• Process-centric applications require new methods of development
• Processes (procedures) are services to and from any client, server, or application
• Process-centric applications require new methods of development
• Processes (procedures) are services to and from any client, server, or application
• Traditional application development is from “outside in”
• Integration and service orientation require process-centric logic
• Traditional application development is from “outside in”
• Integration and service orientation require process-centric logic
Process-OrientedApplications
Process-OrientedApplications
Business Process
Business Process
Business Process
© 2002 Progress Software Corporation8Sim
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The ApplicationsThe Applications
Process-OrientedApplications
Business Process
Business Process
Business Process
Application ModuleToo Large
Data Update LogicToo Small
Business ProcessJust Right
Coarse-grained, loosely-coupled business processes
© 2002 Progress Software Corporation10Sim
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An Application RequiresAn Application Requires
3 Strategic Elements
ESBEnabled
User Interface Freedom
User Interface Freedom
Logic Platform
Process-centric design
© 2002 Progress Software Corporation11Sim
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User Interface Freedom• to deploy the interface of choice• to construct or define user interfaces• to respond to competitive pressures• to operate without a user interface!
User Interface FreedomUser Interface Freedom
Open Client Tools
.NET Integration
Web Services
Progress ChUI, GUI, Web
Access to applications
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• Support for Web Services • Support for SonicXQ• Fast Development of New Services
ESB EnabledESB Enabled
Web Services ToolKit (WSTK)
XML to 4GL / XML to Storage
4GL to Web Services Integration
XQ Service Container
OpenEdgeOpenEdgeApplicationApplication
J2EE J2EE ApplicationApplication
.NET .NET ApplicationApplication
Dynamics for SOA
Application components as services
© 2002 Progress Software Corporation13Sim
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Logic Platform
Business Logic PlatformBusiness Logic Platform
Progress 4GL
Business Logic Platform
Dynamic Business Logic
Business Process Logic
Transaction Logic
Data Logic
Progress Dynamics
Faster assembly of new functionality
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An Application RequiresAn Application Requires
3 Strategic Elements
ESBEnabled
User Interface Freedom
User Interface Freedom
Logic Platform
Process-centric design
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AgendaAgenda
Introduction OpenEdge, Web Services
WSTK Architecture
Developing & Deployment with the WSTK
Connection Management
Open Client Object Model
Demo.....
That's All Folks…
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OpenEdge IntegrationOpenEdge Integration
SonicMQ & SonicXQ
Web Services Development Toolkit
“Using Web services will help reduce costs and improve the efficiency of IT projects by 30 percent.”
Daryl Plummer
Sr. VP, Gartner Group
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One definition of a Web ServiceOne definition of a Web Service
An application that can be accessed over the Web or any network from another application using RPC style calls encoded
using SOAP over HTTP where the interface can be described using WSDL.
“Web Services is the
telephone for applications.”
How is the weather in Bedford?
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Web ServicesWeb Services
Service Producer (Server)– Develops, publishes & deploys the Web Service
Service Registry – Directory of Web Services
Service Consumer (Client)– Locates & uses Web Services
“Logical Model”
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Web Services StandardsWeb Services Standards
HTTP Hypertext Transfer Protocol– Protocol for sending data over the Web
XML eXtensible Markup Language– Standard way to represent & exchange data
SOAP Simple Object Access Protocol– XML based messaging protocol (eg. RPCs)– An extensible message format
WSDL Web Service Description Language– XML based language– A Service Description language
UDDI– A standard for Web Service registries – A way to discover Web Service providers
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XML ExampleXML Example
<?xml version="1.0" encoding="UTF-8"?><Customer type=“partner”>
<Custnum>5</Custnum><Name>Go Fishing Ltd</Name><Address2>83 Ponders End Rd</Address2><City>Harrow</City><State>Middlesex</State><PostalCode>HA8 3LU</PostalCode><Balance>14235.14</Balance>
</Customer>
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SOAPSOAP
SOAP Envelope SOAP Header
– Mechanism for app-specific extensions
SOAP Body– Main business
content– Usually uses SOAP
encoding
SOAP Envelope
SOAP Header
SOAP Body
App-SpecificBody Elements
App-SpecificHeader Elements
Simple Object Access Protocol
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<?xml version="1.0" encoding="utf-8"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SOAP-ENV:Body>
<getQuote xmlns="http://some-site.com">
<symbol xsi:type="xsd:string">qadi</symbol>
</getQuote>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
SOAP ExampleSOAP ExampleSOAP ExampleSOAP ExampleStock Quote Web Service – Request Message
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<?xml version="1.0" encoding="utf-8"?>
<SOAP-ENV:Envelope
SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<SOAP-ENV:Body>
<getQuoteResponse "xmlns="http://www.some-site.com/">
<getQuoteResult xsi:type="xsd:float">99.8503</getQuoteResult>
</getQuoteResponse>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
SOAP ExampleSOAP ExampleSOAP ExampleSOAP ExampleStock Quote Web Service – Reply Message
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WSDLWSDL
What can it do? How do I invoke it? Where does it reside?
Web Service Description Language
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WSDLWSDL
Specifies interface– Business methods that can be invoked
(“operations”)
– Message structure for each method Data fields, types
– Bindings for the operations eg. SOAP over HTTP
Identifies network address of Web Service
Web Service Description Language
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Machine B
CreditChk
UDDI Registry
GetWeather
2. Web service made available to public, by publishing its WSDL to a UDDI registry
Web ServicesWeb Services
How is the weather in Bedford?Machine A
GetWeatherWS
GetWeatherWS
1. Web service is built and deployed, ready to be published.
Machine C
Client
3. Client searches for available weather services
4. Client finds access info about GetWeather
5. Client makes info request directly to service
6. Service sends result back to client
© 2002 Progress Software Corporation27Sim
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AgendaAgenda
Web Services
WSTK Architecture
Developing & Deployment with the WSTK
Connection Management
Open Client Object Model
That's All Folks…
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Web Services Toolkit RoadmapWeb Services Toolkit Roadmap
Phase 1– Web Service-enabled AppServer
– Web Service Client is another Open Client
Phase 2– 4GL to a Web Service
– It’s just like calling another AppServer, e.g.
RUN foo on SERVER web-service-hdl.
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Web Services ToolkitWeb Services Toolkit
Generate a WSDL file for an AppServer-based application based on the Open Client programming model
Runtime infrastructure so that an AppServer can be accessed as a Web Service
Phase 1
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Web Services Toolkit ComponentsWeb Services Toolkit Components
Web Services Adapter (WSA) WSTK enhanced ProxyGen WSTK enhanced Progress Explorer
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Web Services Toolkit Web Services Toolkit Runtime ArchitectureRuntime Architecture
HT
TP
L
iste
ner
Web
Ser
vice
s A
dap
ter
Web Server (JSE)
AppServers
WSDLFiles
WSADs
ubroker.properties
POST(Soap)Web
Service Client Response(Soap)
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Web Services AdapterWeb Services Adapter
Progress provided Java Servlet Can use any Web Server and JSE that
supports the JSE V2.2 specification Manages all communications between a
Web Service client and an AppServer Converts a SOAP request to an AppServer
request using a Web Service Application descriptor (WSAD)
One WSAD deployed for each application Configured using Progress Explorer
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WSADWSAD
One WSAD per application identified by XML namespace
Conceptually similar to Open Client proxies
Includes:– Application service to use– 4GL procedure to call for each SOAP
request– Parameter and datatype information
Deployed to a WSA and maintained persistently
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AgendaAgenda
Web Services
WSTK Architecture
Developing & Deployment with the WSTK
Connection Management
Open Client Object Model
That's All Folks…
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Development Site
Deployment Site
WSM
ProxyGen
4GL
ProgressExplorer
WSM
Web Server Site
WSM
WSDLs
Web Services Adapter
WSADs
HTTP Listener
Soa
p
Req
ues
t/R
esp
onse
GE
T W
SD
L
? ?
Deploying an ApplicationDeploying an ApplicationDeploying an ApplicationDeploying an Application
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ProxyGen
Development Site
Business logic
Proxies
4GL .r files
Java classes
ActiveX
Web Services Mapping File
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Development SiteDevelopment Site
Using ProxyGen – Create ProxyObjects
AppObject (One) SubAppObjects (Optional – many) ProcObjects (Optional – many)
– Initiate generation of Web Service Mapping (WSM) file
– Specify whether application is session managed or session free – more on this later
Package the AppServer application for deployment including the WSM file
Step 1: Prepare Application For Deployment
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Web Server SiteWeb Server Site
Install JSE at Web Server as required Install Web Services Adapter (WSA) within
JSE Configure WSA by editing
ubroker.properties or using Progress Explorer– Log file– URL of WSA instance– Controlling NameServer
Step 2: Configure WSA for access
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Deployment SiteDeployment Site
Specify:– WSA instance to use– Location of WSM– WSDL Generation Info
Target namespace WSDL Encoding
– Application Service of corresponding AppServer Results in:
– WSM being sent to WSA instance along with WSDL generation info
– WSDL and WSAD being generated by WSA instance
– WSAD being loaded so application is available for access
Step 3: Run Progress Explorer to Deploy Application
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Web Services Communication ModelWeb Services Communication Model
Web Web Service Service ClientClient
BusinessBusinessLogicLogic
AppAppServersServers
Web Server
DatabaseDatabaseServerServer
.NETJavaPerl
WSADs
WS
AW
SA
HT
TP
Lis
ten
erH
TT
P L
iste
ne r
““ Op
en C
lien
t
Op
en C
lien
t
Ru
nt i
me ”
Ru
nt i
me”
WSDLs
HTTP PostHTTP Post
HTTP ResponseHTTP Response
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Web Services Web Services Communication Model, cont.Communication Model, cont.
Client sends a SOAP request to the WSA The WSA maps the request to a procedure
on the AppServer using the WSAD The WSA asks the AppServer to run the
procedure The WSA creates a SOAP response or
fault and sends it to the client
Remember - No Progress code on the client!!
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AgendaAgenda
Web Services
WSTK Architecture
Developing & Deployment with the WSTK
Connection Management
Open Client Object Model
That's All Folks…
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Connection ManagementConnection Management
Session Managed– State-aware
– State-reset
– Stateless Session Free
Specified via ProxyGen
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ApplicationApplicationServerServer
ApplicationApplicationServerServer
StatelessStatelessStatelessStateless
Application Application BrokerBroker
AppServer
WSAWSAWSAWSA
Web Web ServicesServices
ClientClientConnect
ConnectConnect
Web Web ServicesServices
ClientClient
© 2002 Progress Software Corporation45Sim
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ApplicationApplicationServerServer
ApplicationApplicationServerServer
StatelessStatelessStatelessStateless
Application Application BrokerBroker
AppServer
WSAWSAWSAWSA
Web Web ServicesServices
ClientClient
Web Web ServicesServices
ClientClientRUN PartRUN Part RUN Part
RUN cust
RUN cust
RUN cust
Integration
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ApplicationApplicationServerServer
ApplicationApplicationServerServer
StatelessStatelessStatelessStateless
Application Application BrokerBroker
AppServer
WSAWSAWSAWSA
Web Web ServicesServices
ClientClient
Web Web ServicesServices
ClientClient
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ApplicationApplicationServerServer
ApplicationApplicationServerServer
Session FreeSession FreeSession FreeSession Free
Application Application BrokerBroker
AppServer
WSAWSAWSAWSA
Web Web ServicesServices
ClientClient
Web Web ServicesServices
ClientClientRUN PartRUN Part RUN Part
RUN cust
RUN cust
RUN cust
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ApplicationApplicationServerServer
ApplicationApplicationServerServer
Session FreeSession FreeSession FreeSession Free
Application Application BrokerBroker
AppServer
WSAWSAWSAWSA
Web Web ServicesServices
ClientClient
Web Web ServicesServices
ClientClient
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AgendaAgenda
Web Services
WSTK Architecture
Deploying an Application with the WSTK
Connection Management
Open Client Object Model
That's All Folks…
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Open Client Object ModelOpen Client Object Model
Object types:– ApplicationObjects (AppObjects)
– Sub-ApplicationObjects (Sub-AppObjects)
– ProcedureObjects (ProcObjects)
Objects are used to:– Provide access to the 4GL logic running on
the AppServer
– Provide runtime context (if necessary)
ApplicationApplicationObjectObject
ProcedureProcedureObjectObject
Sub-Sub-AppObjectAppObject
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AppServer Session ModelAppServer Session Model
Session Managed– Connection is established by the client– Connection is dedicated by the WSA to the
AppServer for that client– AppServers today follow this model (state-aware,
state-reset, stateless)
Session Free– No connection required– Pool of network resources in the WSA shared by all
clients– Web Services design center (state-free)
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Object Relationships at Object Relationships at Runtime: Session ManagedRuntime: Session Managed
Call Connect on AppObject first to establish connection
All objects share single connection
Context information must be managed by client
Connection maintained until all objects released
ApplicationApplicationObjectObject
ProcedureProcedureObjectObject
ProcedureProcedureObjectObject
Sub-Sub-AppObjectAppObject
ProcedureProcedureObjectObject
Method1Method1Method2Method2Method1Method1Method2Method2
MethodXMethodXMethodXMethodX
Proc1Proc1Proc2Proc2FuncXFuncX
Proc1Proc1Proc2Proc2FuncXFuncX
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Object Relationships at Object Relationships at Runtime: Session FreeRuntime: Session Free
Simply call methods on the AppObject to run non-persistent procedures
No context information for AppObject
Warning: ProcObjects and Sub-AppObjects force connection and context management – Not recommended!
ApplicationApplicationObjectObject
ProcedureProcedureObjectObject
ProcedureProcedureObjectObject
Sub-Sub-AppObjectAppObject
ProcedureProcedureObjectObject
Method1Method1Method2Method2Method1Method1Method2Method2
MethodXMethodXMethodXMethodX
Proc1Proc1Proc2Proc2FuncXFuncX
Proc1Proc1Proc2Proc2FuncXFuncX
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A Look at ProxyGenA Look at ProxyGen
ProxyGen works the same for Web Services as it does for Java and ActiveX
Define the Objects and generate the proxy for the client (WSM/WSDL)
New deployment step required in Progress Explorer
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ProxyGen: Select 4GL ProceduresProxyGen: Select 4GL ProceduresSelect the 4GL
procedures for each object
Optionally customize the procedure definition
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ProxyGen: GenerateProxyGen: Generate
Select Web Services Client
Select Session Model
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ProxyGen: GenerateProxyGen: GenerateEnter initial
deployment information:
– Namespace– WSA URL– SOAP Action– Test WSDL
Generate the “proxy”
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Required Information forRequired Information for Web Services Generation Web Services Generation
Namespace– Unique identifier for the Web Service– Must be unique at the WSA instance
WSA URL– URL identifying the location of the WSA
SOAP Action– May be blank, client may need
Test WSDL– Supports a single style/use
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Generating the “Proxy”Generating the “Proxy”
Proxy Generation for Web Services– Uses the 4GL code to generate a Web Services
Mapping (WSM) file
– Optionally generates a Test WSDL file
Deployment Phase– Done in Progress Explorer or wsaman
– Converts the WSM file to a WSAD
– Deployer can change ProxyGen settings
– WSDL available through the WSAhttp://localhost:8080/wsa/wsa1/wsdl?targetURI=OrderService
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Web Services options – DeployWeb Services options – Deploy
View of the explorer with a deployed application.
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Web Services options – ImportWeb Services options – Import
Import screens will look very similar to the deploy screens
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SummarySummary
Web Service enabled AppServer based on Open Client model
Progress provides the technology you need so you can focus on your business and application requirements
Web Services coming to an application
near you soon
Web Services coming to an application
near you soon
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The Interface FreedomThe Interface Freedom
Business Process
loosely-coupled business processes
Process-OrientedApplications
Business Process
Business Process
Business Process
Process-OrientedApplications
Business Process
Business Process
Business Process
Progress, Sonic… .NET, Java…
Just Right for Web Services
ESB, Web Services
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