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Transcript of Migrating Web Dynpro
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SAP AG 2007, SAP TechEd 07 / CE206 / 2
Contributing Speakers
Bertram GanzSAP NetWeaver UI, Web Dynpro Development, SAP AG
Marco Ertel
NetWeaver UI Product Management, SAP AGChris Whealy
NetWeaver RIG, SAP (UK) Ltd
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Learning Objectives
As a result of this workshop, you will be able to: Understand the Web Dynpro Compatibility Contract
in SAP NetWeaver CE 7.1
Migrate existing Web Dynpro Development Components
to SAP NetWeaver CE 7.1 Understand the changes of the New Web Dynpro component model
Understand Component Controller Patterns and Anti-Patterns
Migrate existing Web Dynpro components to the new componentmodel utilizing the Web Dynpro component migration tool (CheatSheet)
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Migrating Web Dynpro Components
Summary
Web Dynpro Backward Compatibility
Migrating Web Dynpro DCs
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Web Dynprro Backward Compatibility
Migrating Web Dynpro Components
Summary
Migrating Web Dynpro DCs
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Backward Compatibilty in Web Dynpro Java
Backward CompatibilityBackward Compatibility
You can still run existing Web Dynpro applications developed in SAP
NetWeaver 04 and SAP NetWeaver 7.0 within an SAP SAP NetWeaver CE7.1 environment.
Source CompatibilitySource Compatibility
Your Web Dynpro application will run after re-generation, re-compilationand re-deploymentof all Web Dynpro DCs it consists of requiring nosource code adaptations.
Binary Compatibility:Binary Compatibility: Not supported
Web Dynpro Compatibility Contract
The Web Dynpro Foundation for Java in SAP NetWeaver CE 7.1
is backward source-compatible with SAP NetWeaver 04 and SAP
NetWeaver 7.0.
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Migrating Web Dynpro Components
Summary
Web Dynpro Backward Compatibility
Migrating Web Dynpro DCs
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Migrating Web Dynpro Applications (DCs) to SAP NetWeaver CE 7.1
Web Dynpro DC Migration Process
SAP NetWeaver 7.0SP13 NWDI
Valid Track for SAP
NetWeaver CE 7.1
is set up (the
required Net-
Weaver SCs are
added)
Set upDevelopmentInfrastructure
Create ActiveProjects for Web
Dynpro DCs to be
migrated
Repair Project
Structure and
Classpath of Web
Dynpro DCs in Web
Dynpro Explorer
Refactor/DeleteBroken or
Deprecated Public
Parts of Used
Library DCs
Migrate DCDependencies
Eliminate all un-supported coding
(e.g. typecasts to
"forbidden"
internal Web
Dynpro FPIs).
Based on the new
Web Dynpro
Facade concept
such code cannotbe compiled any
more.
Rebuild your Web
Dynpro DCs
RebuildWeb Dynpro DCs
Redeploy your WebDynpro DCs
Run your Web
Dynpro Application
Deployand Run
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Migration Step 1
Set up Development Infrastructure
Web Dynpro DC Migration Process Step
SAP NetWeaver
7.0 SP13 NWDIValid Track for
SAP NetWeaver
CE 7.1 is set up
(the requiredNet-Weaver SCs
are added)
A SAP NetWeaver Developer Studio for SAP NetWeaver CESAP NetWeaver Developer Studio for SAP NetWeaver CE
7.17.1 must be used as a designtime environment. SAP NetWeaver CE 7.1 does notdoes not come with an installation
of the SAP NetWeaver Development Infrastructure (NWDI).
Two main scenarios for a valid development and production
infrastructure exits: Use an existing SAP NetWeaver 7.0 Development
Infrastructure with valid tracks for SAP NetWeaver CE
7.1 set up.
Use a third party development and productioninfrastructure.
Set up Development Infrastructure
1
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Migration Step 2
Migrate DC Dependencies
Web Dynpro DC Migration Process Step
Create Active
Projects for Web
Dynpro DCs to be
migrated
Repair Project
Structure and
Classpath of WebDynpro DCs in Web
Dynpro Explorer
Refactor/Delete
Broken or
Deprecated Public
Parts of Used
Library DCs
The initial Library DC dependencies for Web Dynpro DCs
have changed in SAP NetWeaver CE 7.1A new Web Dynpro Library DC (Web Dynpro Faade) was
introduced only exposing the public Web Dynpro Runtime
APIs
Forbidden typecasts to invoce internal Web Dynpro FPI(Framework Programming Interfaces) are no longer
possible
Manually added DC dependencies might have changed also.
They must be migrated to the new DC Public Parts manually
Migrate DC Dependencies
2
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Migration Step 2
Create Active Projects
Web Dynpro DC Migration Process Step
Create Active
Projects forWeb Dynpro
DCs to be
migrated
Repair Project
Structure and
Classpath of Web
Dynpro DCs in Web
Dynpro Explorer Refactor/Delete
Broken or
Deprecated Public
Parts of Used
Library DCs
Open Development Infrastructure Perspective
Select Web Dynpro DCs of your application to be migrated
Select context menu item Sync / Create ProjectSync / Create Project CreateCreate
Active ProjectActive Project
Migrate DC Dependencies
2
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Migration Step 2
Repair Projects
Web Dynpro DC Migration Process Step
Create Active
Projects for Web
Dynpro DCs to be
migrated
Repair Project
Structure and
Classpath of
Web Dynpro DCs
in Web Dynpro
Explorer
Refactor/Delete
Broken or
Deprecated Public
Parts of Used
Library DCs
Web Dynpro Explorer opens autmatically
Select Web Dynpro DCs of your application to be migrated
Select context menu item RepairRepair Project Structure andProject Structure and
ClasspathClasspath
Migrate DC Dependencies
2
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Migration Step 2
Repair Project Result
Web Dynpro DC Migration Process Step
Create Active
Projects for Web
Dynpro DCs to be
migrated
Repair Project
Structure and
Classpath of
Web Dynpro DCs
in Web Dynpro
Explorer
Refactor/Delete
Broken or
Deprecated Public
Parts of Used DCs
After Repair ProjectsRepair Projects new Library DC usages are added
Deprecated DC usages still exist and will be deleted in nextstep
Migrate DC Dependencies
2
Repair ProjectRepair Project
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Migration Step 2
Delete Deprecated Library DCs
Web Dynpro DC Migration Process Step
Create Active
Projects for Web
Dynpro DCs to be
migrated
Repair Project
Structure and
Classpath of WebDynpro DCs in Web
Dynpro Explorer
Delete
DeprecatedPublic Parts of
Used Library
DCs
Open Development Infrastructure Perspective
Open DependenciesDependencies Tab
Repeatedly select single Web Dynpro DC
Delete Deprecated Library DC usage relations
Migrate DC Dependencies
2
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Migration Step 2
Set Build Time Dependency
Web Dynpro DC Migration Process Step
Create Active
Projects for Web
Dynpro DCs to be
migrated
Repair Project
Structure and
Classpath of WebDynpro DCs in Web
Dynpro Explorer
Set Build Time
Dependency ofPP gciin Web
Dynpro Library
DC tc/wd/api
Open Development Infrastructure Perspective
Open DependenciesDependencies Tab
Repeatedly select single Web Dynpro DC
Set Build Time dependency of Public Part gcigciin required
Web Dynpro Library DC tc/wd/apitc/wd/api
Migrate DC Dependencies
2
Prior toPrior to
SAPSAP
NetWeaverNetWeaver
CE 7.1 SP3CE 7.1 SP3OnlyOnly
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Migration Step 2
Migrate Manually Added DC Usages
Web Dynpro DC Migration Process Step
Create Active
Projects for Web
Dynpro DCs to be
migrated
Repair Project
Structure and
Classpath of WebDynpro DCs in Web
Dynpro Explorer
Refactor broken
or deprecatedPublic Parts of
used External
Library DCs or
used WebDynpro DCs
Open Development Infrastructure Perspective
Open DependenciesDependencies Tab
Repeatedly select single Web Dynpro DC
Migrate deprecated Public Part usages of manually added
External Library DCs or other Web Dynpro DCs
Apply QuickfixQuickfix (CTRL + 1) in case a Public Part successor isdefined
Migrate DC Dependencies
2
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Open Development Infrastructure Perspective
Open DependenciesDependencies Tab
Select Web Dynpro DCs of your application to be migrated
Select context menu item BuildBuild
Migration Step 3
Rebuild Web Dynpro DCs
Web Dynpro DC Migration Process Step
Eliminate all un-
supported coding
(e.g. typecasts to
"forbidden"
internal Web
Dynpro FPIs).
Based on the newWeb Dynpro
Facade concept
such code cannot
be compiled any
more.
Rebuild your
Web Dynpro DCs
Rebuild Web Dynpro DCs
3
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Open Web Dynpro ExplorerWeb Dynpro Explorer
Open Web Dynpro DC comprising your Web Dynproapplication entity
Select context menu item RunRun for application entity
Migration Step 4
Deploy and Run Application
Web Dynpro DC Migration Process Step
Deploy your Web
Dynpro DCs
Run your Web
Dynpro
Application
Deploy and Run Application
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Migrating
Web Dynpro DCs to
SAP NetWeaver CE 7.1
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Migrating Web Dynpro Components
Enhanced Web Dynpro Component Model
SAP Recommendations on Component Migration
How To Migrate Web Dynpro Components
Further Migration Aspects
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Web Dynpro Component Migration at a Glance
What is
Web Dynprocomponentmigration?
The Web Dynpro component programming model was
significantly changed in SAP NetWeaver CE 7.1!
Existing Web Dynpro component created in NetWeaver 04
or 7.0 can be migrated to the new component model.
?
What aboutWeb Dynprocomponentcompatibility?
SAP NetWeaver CE 7.1 is sourcesource--compatiblecompatible to all your
existing Web Dynpro components created in SAPNetWeaver 04 or 7.0.
After repair, rebuild and deployment of Web Dynpro DCsyour can run exsting components in CE 7.1.
?
Must all myWeb Dynprocomponentsbe migrated?
No! Based on the given sourcesource--compatibilitycompatibility you can runexisting Web Dynpro components without migration.
Under certain conditions component migration should or
must be applied (e.g. to use new functions).
?
How can Imigrate myWeb Dynpro
components?
Read the Component Migration Process Stepsdescribed
in this presentation
Run the Web Dynpro component cigration tool (CheatWeb Dynpro component cigration tool (Cheat
Sheet)Sheet) assisting you in successfully migrating existing
components to the new component model.
?
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Migrating Web Dynpro Components
Enhanced Web Dynpro Component Model
Further Migration Aspects
SAP Recommendations on Component Migration
How To Migrate Web Dynpro Components
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Modified Web Dynpro Component Architecture
Overview
There are significant changes in the Web Dynpro component
programming model in SAP NetWeaver CE 7.1
The changes are sourcesource--compatiblecompatible. Existing Web Dynpro components
can be rebuilt, rearchived, redeployed and will then run.
Old components will look visibly different (grey component icons) and will
further be based on the old programming model.
Old Web Dynpro components will further be supported
All Web Dynpro components which are newly created in the SAP
NetWeaver CE 7.1 Developer Studio are based on the new programming
model
Themigrationmigration of existing Web Dynpro component is supported by the
Web Dynpro Tools but can potentially be a complex task.
SAP recommends not to migrate existing Web Dynpro components by
default. Component migration is only recommended in specific use cases.
Web Dynpro Components in SAP NetWeaver CE 7.1!
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Modified Web Dynpro Component Architecture (2)
New Window Controller
Replaces former Component
Interface Controller class
Implements one ore many
Interface Views defined in
Local or Standalone
Component Interface
Definitions The 1..1 relation to former
Component Interface View is
no more mandatory
New Window Plugs for
Simpler Cross-Component
Navigation
!
f C (1)
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Modified Web Dynpro Component Architecture (1)
New Local Component Interface Definition
Local Component InterfaceLocal Component Interface
DefintionDefintion is purely abstract
Defines IExternal-API of a
component implementation
Component Interface Controller
Class no longer exists
Component controllerimplements LocalLocaland
StandaloneStandaloneComponent InterfaceComponent Interface
DefintionsDefintions
View containers in component
interface views
Component interface inheritance
!
W b D C t A t SAP N tW 7 0
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Web Dynpro Component Anatomy
SAP NetWeaver 7.0
W b D C t A t SAP N tW CE 7 1
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Web Dynpro Component Anatomy
SAP NetWeaver CE 7.1
W b D C t A t SAP N tW CE 7 1
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Web Dynpro Component Anatomy
SAP NetWeaver CE 7.1
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Migrating Web Dynpro Components
Enhanced Web Dynpro Component Model
Further Migration Aspects
SAP Recommendations on Component Migration
How To Migrate Web Dynpro Components
St ti Th W b D C t Mi ti T l
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Starting The Web Dynpro Component Migration Tool
Components which are based on the old component model aredisplayed with a greygreycomponent iconcomponent icon
Old Web Dynpro components can be migrated with the semisemi--
automaticautomatic Web Dynpro Component Migration ToolWeb Dynpro Component Migration Tool based on a useruser
assistance cheat sheetassistance cheat sheet
Start the ComponentMigration Tool withcontext menu item
Migrate
Web Dynpro Component Migration Cheat Sheet
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Web Dynpro Component Migration Cheat Sheet
The Component Migration Cheat SheetsComponent Migration Cheat Sheets assists the developer inpreparing a Web Dynpro component for migration
Migration can be started after successful component preparation
Potential Side Effects of Web Dynpro Component Migration
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Potential Side Effects of Web Dynpro Component Migration
Irreversible
Process
The Component Migration Process cannot bereverted.
Im
portan
tNote
!
Migrated Components might changebehaviorally post-migration testing required.
Carefully migrate heavily used components!
Behavioral
Changes
Hook Method
Invocation
Changes
Hook methods doBeforeNavigation() anddoPostProcessing() are only called with
pending action might affect application logicContext Specific
Changes
Invocation of IWDNode.bind() now throws aruntime exception when a correspondingsuppliy function is defined.
Table UI
Element Changes
Table Selection Change Behavior will change
when selectionChangeBehavior was set tovalues auto or nw04 (notnw04splus) before.
Naming UI
Element IDs UI element IDs MUST NOT start with _
How to Simplify and Accelerate Component Migration
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How to Simplify and Accelerate Component Migration
RESOLVE all Component Controller Bypass AntiComponent Controller Bypass Anti--PatternsPatterns in Yourcomponent implementation before migrating it!
ADHERE to the Component Controller Delegation PatternsComponent Controller Delegation Patterns! Thisaccelerates and simplifies Your Component Migration Process!
ONLY Define IndirectUsage Relations
To the Interface Controller using the
Component Controller as Delegator!
NEVER Define a Usage Relation from a
Non-Component Controller to the
Interface Controller directly!
ALWAYS Define IndirectControllerUsage Relations from the Interface
Controller to NON-Component
Controllers using the Component
Controller as Delegator!
NEVER Define a Usage Relation from a
Component Interface Controller to a
Non-Component Controller!
Patterns Anti-Patterns
Component Controller Bypass Anti Patterns
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Component Controller Bypass Anti-Patterns
NEVER Define a Usage Relation from a Non-Component Controller to the Interface Controller!
applies toSAP NetWeaver 04 and 7.0
Detecting Anti Patterns in Your Web Dynpro Component
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Detecting Anti-Patterns in Your Web Dynpro Component
To easily detect the Component Controller Bypass AntiComponent Controller Bypass Anti--PatternPattern Youcan apply the Inverse Search FunctionInverse Search Function provided by the Web DynproTools:
Im
porta
ntTip
Select ComponentInterface Controller
Open context menu Select Menu Item
References Project
Component Controller Delegation Patterns
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Component Controller Delegation Patterns
ONLY Define IndirectUsage Relations to the
Interface Controller using the Component
Controller as Delegator!
applies toSAP NetWeaver 04 and 7.0
Component Controller Bypass Anti-Patterns
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Component Controller Bypass Anti-Patterns
NEVER Define a Usage Relation from aComponent Interface Controller to aNon-Component Controller!
applies toSAP NetWeaver 04 and 7.0
Component Controller Delegation Pattern A
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Component Controller Delegation Pattern A
ALWAYS Define Indirect Controller Usage Relations from the
Interface Controller to Non-Component Controllers using the
Component Controller as a Delegator!
applies toSAP NetWeaver 04 and 7.0
Quick Fixes for Interface Controller Implementation Errors
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Quick Fixes for Interface Controller Implementation Errors
Apply Quick FixQuick Fix to resolve a broken implementation relation fromthe Component Controller to a Local or Standalone ComponentInterface Defintion
How to Migrate a Web Dynpro Component Process Steps
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How to Migrate a Web Dynpro Component
Process Steps
Post-Processing StepsafterComponent Migration
Component MigrationPreparative Steps
beforeComponent Migration
CheckPackage Namespacesof Component Entities
StartWeb Dynpro
Component Migration
Analyze and PrepareComponent Interface
Controller
Analyze and PrepareComponent Interface
Views and Controllers
Implement
Window Controllers
Invoke IPublic-API of
Window Controllers
Web Dynpro Component Migration Cheat Sheet
Analyze and PrepareImplemented Interfaces
Real Life Component Migration Scenarios
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Real Life Component Migration Scenarios
The component migration process steps described in thispresentation are all potential steps to be applied.
Most Web Dynpro component implementations can be migrated tothe new component model more easilymore easily by applying a small subsetsmall subset
of component migration process steps!
Post-Processing Steps
afterComponent MigrationComponent Migration
Preparative Steps
beforeComponent Migration
StartWeb DynproComponentMigration
Analyze andPrepare
ComponentInterface
Controller
Web Dynpro Component Migration Cheat Sheet
Post-Processing StepsafterComponent Migration
Component MigrationPreparative Steps
beforeComponent Migration
StartWeb DynproComponentMigration
Analyze andPrepare
ComponentInterface
Controller
Analyze andPrepare
ComponentInterface Viewsand Controllers
ImplementWindow
Controllers
Invoke IPublic-API of
WindowControllers
Web Dynpro Component Migration Cheat Sheet
Post-Processing StepsafterComponent Migration
Component MigrationPreparative Steps
beforeComponent Migration
CheckPackageNamespaces
of ComponentEntities
StartWeb DynproComponentMigration
Analyze andPrepare
ComponentInterface
Controller
Web Dynpro Component Migration Cheat Sheet
Analyze andPrepare
ImplementedInterfacesModel ComponentModel Component
MigrationMigration Visual ComponentVisual Component
MigrationMigration Faceless ComponentFaceless Component
MigrationMigration
Scenario 1Scenario 2
Scenario 3
Im
portan
tNote
!
Component Preparation: Names and Packages
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Component Preparation: Names and Packages
Preparative Steps beforeComponent Migration
CheckNames and Packagesof Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Move Views, Windows
and Custom Controllers
Check ConflictingWindow Names
CheckComponent Package
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
* dynamic cheat sheet step
* dynamic cheat sheet step
Component Preparation: Move Component Entities
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Component Preparation: Move Component Entities
Preparative Steps beforeComponent Migration
CheckNames and Packagesof Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Move Views, Windows
and Custom Controllers
Check ConflictingWindow Names
CheckComponent Package
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
* dynamic cheat sheet step
Component Preparation: Check Conflicting Window Names
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Component Preparation: Check Conflicting Window Names
Preparative Steps beforeComponent Migration
CheckNames and Packagesof Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Move Views, Windows and
Custom Controllers
Check ConflictingWindow Names
CheckComponent Package
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
Component Preparation: Check Component Package
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Component Preparation: Check Component Package
Preparative Steps beforeComponent Migration
CheckNames and Packagesof Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Move Views, Windows and
Custom Controllers
Check ConflictingWindow Names
CheckComponent Package
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
* dynamic cheat sheet step
Component Preparation: Component Interface Controller
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Co po e t epa at o Co po e t te ace Co t o e
CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
ImplementInterfaceController in
ComponentController
Re-DefineController
Usage
Relations
Analyze and Prepare
Interface Context
Analyze and PreparePublic Interface
Methods
Analyze and TransferInterface Controller
Coding
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
Preparative Steps beforeComponent Migration
Analyze and PrepareInterface Events and
Event Handlers
Adhere to the Component Controller Delegation Patterns
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p g
STRICTLY Adhere to the Component Controller Delegation
Patterns! RESOLVE all Bypass Anti-Patterns before!
This highly accelerates Your Component Migration Process!
Component Preparation: Component Interface Controller
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p p p
CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
ImplementInterfaceController in
ComponentController
Re-DefineController
Usage
Relations
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
Preparative Steps beforeComponent Migration
Analyze and Prepare
Interface Context
Analyze and PreparePublic Interface Methods
Analyze and TransferInterface Controller Coding
Analyze and PrepareInterface Events and
Event Handlers
Component Preparation: Interface Context
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p p
ImplementInterfaceController in
ComponentController
Re-DefineController
Usage
Relations
CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Analyze and Prepare
Interface Context
Analyze and PreparePublic Interface Methods
Analyze and TransferInterface Controller Coding
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
Preparative Steps beforeComponent Migration
Analyze and PrepareInterface Events and
Event Handlers
Component Preparation: Interface Event Handlers
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p p
ImplementInterfaceController in
ComponentController
Re-DefineController
Usage
Relations
CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Analyze and Prepare
Interface Context
Analyze and PrepareInterface Events and
Event Handlers
Analyze and PreparePublic Interface Methods
Analyze and TransferInterface Controller Coding
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
Preparative Steps beforeComponent Migration
Component Preparation: Interface Events
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p p
ImplementInterfaceController in
ComponentController
Re-DefineController
UsageRelations
CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Analyze and Prepare
Interface Context
Analyze and PrepareInterface Events and
Event Handlers
Analyze and PreparePublic Interface Methods
Analyze and TransferInterface Controller Coding
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
Preparative Steps beforeComponent Migration
Component Preparation: Public Interface Methods
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ImplementInterfaceController in
ComponentController
Re-DefineController
UsageRelations
CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Analyze and Prepare
Interface Context
Analyze and PrepareInterface Events and
Event Handlers
Analyze and PreparePublic Interface
Methods
Analyze and TransferInterface Controller Coding
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
Preparative Steps beforeComponent Migration
Component Preparation: Interface Controller Coding
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ImplementInterfaceController in
ComponentController
Re-DefineController
UsageRelations
CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Web Dynpro Component Migration Cheat Sheet
Analyze and Prepare
Interface Context
Analyze and PreparePublic Interface Methods
Analyze and TransferInterface Controller
Coding
Analyze and PrepareComponent Interface Views
Analyze and PrepareImplemented Interfaces
Preparative Steps beforeComponent Migration
Analyze and PrepareInterface Events and
Event Handlers
Component Preparation: Component Interface Views
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CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Analyze and PrepareComponent Interface Views
and their Controllers
Web Dynpro Component Migration Cheat Sheet
Preparative Steps beforeComponent Migration
Note Outbound, Exitand Suspend Plugs
Analyze and CopyInterface View
Controller CodingInvoking IPublic-APIs
Analyze and CopyInterface View
Controller CodeHandling Plugs
See StepPost-Processing Steps
after Component Migration
Component Preparation: Outbound, Exit and Suspend Plugs
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CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Analyze and PrepareComponent Interface Views
and their Controllers
Web Dynpro Component Migration Cheat Sheet
Preparative Steps beforeComponent Migration
Note Outbound, Exitand Suspend Plugs
Analyze and Copy InterfaceView Controller Code
Handling Plugs
Analyze and Copy InterfaceView Controller CodingInvoking IPublic-APIs
See StepPost-Processing Steps
after Component Migration
Component Preparation: Interface View Controller Coding
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CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Analyze and PrepareComponent Interface Views
and their Controllers
Web Dynpro Component Migration Cheat Sheet
Note Outbound, Exit andSuspend Plugs
Analyze and CopyInterface View
Controller CodeHandling Plugs
Preparative Steps beforeComponent Migration
Analyze and Copy InterfaceView Controller CodingInvoking IPublic-APIs
See StepPost-Processing Steps
after Component Migration
Component Preparation: Interface View Controller Coding
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CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Analyze and PrepareComponent Interface Views
and their Controllers
Web Dynpro Component Migration Cheat Sheet
Note Outbound, Exit andSuspend Plugs
Analyze and Copy InterfaceView Controller Code
Handling Plugs
Preparative Steps beforeComponent Migration
Analyze and CopyInterface View
Controller CodingInvoking IPublic-APIs
See StepPost-Processing Steps
after Component Migration
Component Preparation: Implemented Interfaces
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Web Dynpro Component Migration Cheat Sheet
Check Native InterfaceInheritance
CheckPackage Namespaces
of Component Entities
Analyze and PrepareComponent Interface
Controller
Analyze and PrepareComponent Interface Views
and their Controllers
Analyze and PrepareImplemented Interfaces
Preparative Steps beforeComponent Migration
* dynamic cheat sheet step
Start Component Migration
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Web Dynpro Component Migration Cheat Sheet
Component Migration
StartWeb Dynpro
Component Migration
Post-Processing Steps after Component Migration
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Post-Processing Steps afterComponent Migration
ImplementWindow Controllers
Invoke IPublic-API ofWindow Controllers
Implement Inbound-,Resume- and Startup-Plug Event handlers
Implement Inbound-,Resume- and Startup-Plug Event handlers
Implement Inbound-,Resume- and Startup-
Plug Event handlers
See StepComponent Preparation:
Component Interface Views
Complete Web Dynpro Component Migration Process
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Preparing your Web Dynpro Components for MigrationPreparing your Web Dynpro Components for Migration
Refactor Component Controller Bypass Anti-Patterns
Make sure, that the Component Controller Delegation Pattern isstrictly applied!
Copy Component Interface View Controller Implementation toNotepad
Applying the Web Dynpro Component Migration ToolApplying the Web Dynpro Component Migration Tool
Component Migration PostComponent Migration Post--ProcessingProcessing
Paste Interface View Controller Implementation from Notepad to
Window Controller
Redefine broken interface controller usages pointing to newwindow controller
Invoke the window controller's IPublic-API to fire exit, outboundand suspend plugsMi
grationProc
essSu
mmary
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Migrating Web Dynpro Components
Enhanced Web Dynpro Component Model
Further Migration Aspects
SAP Recommendations on Component Migration
How To Migrate Web Dynpro Components
SAP Recommendation on Component Migration at a Glance
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Do not
Migrate Web Dynpro Components By Default!
You can still run existing Web Dynpro Components in CE 7.1
SAP recommends notto migrate existing Web Dynpro components by
default.
In many existing Web Dynpro application scenarios there is no
mandatory necessity for component migration.
Do
Migrate Web Dynpro Components In Specific Use CasesOnly!
Existing Web Dynpro component should only be migrated to the new
component model in specific use cases:
Ease of maintenance: Developers only deal with new component model
Simplified cross-Component Navigation
Apply inheritance of Standalone Component Interfaces
Implementation of Standalone Component Interface using new function
Development of pure layout components referencing UI components
SAP Recommendations on Web Dynpro Component Migration
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Mandatory
Migration
An existing Web Dynpro component must implement a new
standalone component interface definition utilizing new functions
An existing Web Dynpro component must utilize component
interface inheritance which is only supported in the new
component model
An existing Web Dynpro component must support the genericsecondary help service
Optional
Migration
Web Dynpro component developers are not familiar with the old
Web Dynpro component model
You want to simplify your cross-component navigation byapplying the new window navigation plug concept
Not
Necessary
Migration
An existing Web Dynpro component must implement a new
standalone component interface definition not utilizing new
functions
Utilizing View Containers in Component Interface Views
You want to apply the new default plug property for Web Dynpro
view usages
You want to use the new universal context nodes
SAP Recommendations on Web Dynpro Component Migration
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Mandatory
Migration
An existing Web Dynpro componentmust implement a new standalone
component interface definition
utilizing new functions
An existing Web Dynpro component
must utilize component interface
inheritance which is only supported
in the new component model
An existing Web Dynpro componentmust support the generic secondary
help service
SAP Recommendations on Web Dynpro Component Migration
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Optional
Migration
Web Dynpro componentdevelopers are not familiar with
the old Web Dynpro componentmodel
You want to simplify your
cross-component navigationby
applying the new window
navigation plug concept
SAP Recommendations on Web Dynpro Component Migration
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Unneccessary
Migration
An existing Web Dynprocomponent must implement a
new standalone componentinterface definition not utilizing
new functions
Utilizing View Containers in
Component Interface Views to
develop Layout ComponentsLayout Components
referencing UI Components
SAP Recommendations on Web Dynpro Component Migration
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Unneccessary
Migration
You want to apply the newdefault plug property for Web
Dynpro view usages You want to use the new
universal context nodes
Migrating
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Migrating
Web Dynpro
Components from
SAP NetWeaver 7.0
to CE 7.1
Sample Component Migration Scenario
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1
4
2
3
5
6
Pattern Description
Window NameConflicts withComponent ControllerName
Exit plug defined in
Component InterfaceView
View controller firesexit plug invoking theinterface view
controllers IPublic-API
View controller by-passes componentcontroller
Component context ismapped to interfacedata context
Interface context ismapped to thecomponent context
1
2
3
4
5
6
How to Migrate a Web Dynpro Component Process Steps
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Post-Processing Steps
afterComponent MigrationComponent MigrationPreparative Steps
beforeComponent Migration
CheckPackage Namespaces
of Component Entities
StartWeb Dynpro
Component Migration
Analyze and PrepareComponent Interface
Controller
Analyze and PrepareComponent InterfaceViews and Controllers
Implement
Window Controllers
Invoke IPublic-API of
Window Controllers
Web Dynpro Component Migration Cheat Sheet
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Migrating Web Dynpro Components
Enhanced Web Dynpro Component Model
Further Migration Aspects
SAP Recommendations on Component Migration
How To Migrate Web Dynpro Components
Migrating Component Interface Definitions
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1. SAP recommends not to migratenot to migrate existing Web Dynpro
component interface definitions by default. In many existingWeb Dynpro application scenarios there is no mandatorynecessitiy for component interface definition migration.
2. Existing Web Dynpro component interface definitions shouldonly be migrated to the new component model in specific usecases.
SAPR
ecom
menda
tion
Migrating Web Dynpro Controller Contexts
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No, the component migration tool does notdoes not migrate former contextmodel and value elements to the new universal context elementsitself.
You must explicitly trigger this context migration in a separate step.
Does the component migration tool also convert the former context
model and value elements to the new universal elements?
?
I know that there is no difference between context model versus value elements
(nodes and attributes) any more in SAP NetWeaver CE 7.1.
Both element types are merged in the new universal context nodes and attributes.
Migrate complete
controller contexthierarchy separately viacontext menu itemMigrate Context Treeoncontext root node level.
Migrating Deprecated UI Element Associations
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In SAP NetWeaver CE 7.1 the following UI element associationsUI element associations of
the TableTableUI elementUI element were deprecateddeprecated:
Deprecated Association New Association Association Target UI Element
Column GroupedColumn IWDTableColumn
IWDTableColumnGroup
MasterColumn RowArrangement IWDTreeByNestingTableColumn IWDTableRowGrouping
Migrate deprecated UI element
associations of the Table UI
element with context functionMigrate Columns
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Migrating Web Dynpro Components
Summary
Web Dynpro Backward Compatibility
Migrating Web Dynpro DCs
Summary
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The Web Dynpro Foundation for Java in SAP NetWeaver CE 7.1 is
backward source-compatible with SAP NetWeaver 04 and 7.0
The migration of Web Dynpro applications to SAP NetWeaver CE 7.1 ismade very simple:
just repair, build and deploy related Web Dynpro DCs and then run
your Web Dynpro application
The Web Dynpro component model was subject to significant changesin SAP NetWeaver CE 7.1.
Abstract component interfaces (views, controller) are now implementedby component and new window controllers.
Existing Web Dynpro components can be migrated with the semi-automatic Web Dynpro Component Migration Tool
SAP Recommendation on Web Dynpro component migration:
Do not migrate components by default!
Migrate components in specific use cases only!
Further Information
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SAP Public Web:SAP Developer Network (SDN): www.sdn.sap.com
and
www.sdn.sap.com/irj/sdn/developerareas/webdynpro
Business Process Expert (BPX) Community: www.bpx.sap.com
Related Workshops/Lectures at SAP TechEd 2007CE110, Web Dynpro Java
What's New in SAP NetWeaver 7.1
Composition Environment, 1 hour lecture
CE351, Designing Low TCO Applications in Web Dynpro Java, CE352, Getting the best from the Web Dynpro Framework, CE252, Moving J2EE Applications to SAP NetWeaver CompositionEnvironment Made Easy
Related SAP Education and Certification Opportunitieshttp://www.sap.com/education/
SAP NetWeaver, Development Subscription
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