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ADF EMG XML DataControl (OpenWorld 2014)
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Transcript of ADF EMG XML DataControl (OpenWorld 2014)
ADF EMGXML Data ControlPowerful and Easy ADF Data Control for XML data
About Us
Richard OlrichsMNwww.olrichs.nl@richardolrichs
Wilfred van der DeijlThe Future Groupwww.redheap.com@wilfreddeijl
AgendaShort introductionBrief historyAlternativesLive product demoTheoretical summary of the demo
Short Introduction● Goal: An easy way to handle XML in ADF● Any XML element can be runtime data
○ XML payload in SOA/BPM Human Task○ SOAP Web Service response○ RESTful XML API○ XML column in database○ Static file○ and more
Short IntroductionADF abstraction through Data Controls
Short Introduction● XML Schema is the key● XML DataControl gets its structure from XSD● Runtime XML document can come from
anywhere○ Human task payload, Static resource, Web service,
or… wherever you like
XML DataControl History● Development started at MN in August 2012● Adopted by Spir-it since March 2014● Open to the public
○ ADF EMG sub project○ https://adfxmldc.atlassian.net/wiki○ Available through Help > Check For Updates
AlternativesCalling WebService from ADF
1. ADF WebService DataControl
2. JAX-WS Proxy with Bean DataControl
3. Programmatic Business Components
ADF WebService DataControlAlternatives
● Not customizable, for simple web services
● Dates and enumerations not supported
● Only for simple web services like stock info or weather info
JAX-WS Proxy with Bean DCAlternatives
● Lots of work:○ Generate JAX-WS Proxy classes○ Domain POJO’s○ Mapper classes (and back).
● Labor intensive when services change
● JAX-WS Proxy cannot be used directly as bean DataControl○ Dates and enumerations not supported○ JAXBElement getters/setters not supported
● Lot of work: ○ JAX-WS Proxy○ ViewObjects○ EntityObjects○ Mappers (and back)
● BC is very database (SQL) centric○ Commit, Rollback, Fault-In selects, locking,
connection pooling, etcetera● Requires extensive coding in ADF BC base
classes
Programmatic ADF BCAlternatives
ADF EMG
ADF EMG
ADF EMG
Demo TimeADF EMG XML DataControl
ADF EMG XML DataControl● Minimal effort to setup, yet powerful and
customizable● JDeveloper 11.1.1 and 12.1.3
Powerful Providers● Data Provider - Fetch XML Element● Customization - Supplies customization classes● Type Mapper - Map XML to Java types● Structure Provider - Builds DC structure from XSD
DataProvider Nesting● Plain DataProviders
○ WSDataProvider - Web Service○ ELDataProvider - Expression Language○ ResourceDataProvider - XML file from classpath
● Nesting DataProviders○ Can manipulate dynamic parameters going into the
nested dataprovider○ Get XML from nested provider and can manipulate it
before returning it to the caller
Nesting DataProviders● XSL Transformation● XML Schema Validation● Caching● Multi Nesting
○ UnionFilter - Combines result from multiple providers○ Build your own...
WSDataProviderEmployeeService
<Employee> <Type>MGR</Type> …</Employee>
WSDataProviderReferenceDataService
WSDataProviderEmployeeService
<Employee> <Type>MGR</Type> …</Employee>
<EmployeeTypes> <Type> <Code>MGR</Code> <Desc>Manager</Desc> </Type> …</EmployeeTypes>
WSDataProviderReferenceDataService
WSDataProviderEmployeeService
UnionFilter
<Employee> <Type>MGR</Type> …</Employee>
<EmployeeTypes> <Type> <Code>MGR</Code> <Desc>Manager</Desc> </Type> …</EmployeeTypes>
<Union> <Employee> … </Employee> <EmployeeTypes> ... </EmployeeTypes></Union>
WSDataProviderReferenceDataService
WSDataProviderEmployeeService
UnionFilter
XSLFilter
<Employee> <Type>MGR</Type> …</Employee>
<EmployeeTypes> <Type> <Code>MGR</Code> <Desc>Manager</Desc> </Type> …</EmployeeTypes>
<Employee> <Type>MGR</Type> <TypeDesc>Manager</TypeDesc> …</Employee>
<Union> <Employee> … </Employee> <EmployeeTypes> ... </EmployeeTypes></Union>
WSDataProviderReferenceDataService
WSDataProviderEmployeeService
CacheFilter
UnionFilter
XSLFilter
<Employee> <Type>MGR</Type> …</Employee>
<EmployeeTypes> <Type> <Code>MGR</Code> <Desc>Manager</Desc> </Type> …</EmployeeTypes>
<Employee> <Type>MGR</Type> <TypeDesc>Manager</TypeDesc> …</Employee>
<Union> <Employee> … </Employee> <EmployeeTypes> ... </EmployeeTypes></Union>
Java Customizers● Java Classes with Annotations● Can alter structure and behavior of
datacontrol elements○ Calculated Attributes○ Transient Attributes○ Attribute Validation○ Element Validation○ Post Attribute Change○ Post Element Created○ Custom operations/methods
Wiki - adfxmldc.atlassian.net/wiki
Next StepsDownload from JDev Update Center and follow 5 Minute Getting Started from wiki
Subscribe to ADF EMG:http://www.adfemg.org
Follow XML DataControl development:https://adfxmldc.atlassian.net/wiki
Questions
Demo shots
Creating Data Control
Initial Data Controlin 2 minutes
Dynamic Parameter from DataControls.dcx
Drag-DropData Control
onto Page
Dynamic Parameter value (typically from EL)
Initial Task Flowin 5 minutes
Which Data Collection is this customizing ?
Calculated (Read Only) Attribute
Transient (Read Write) Attribute
Attribute Validation
Register Customization Class(es) with Data Control
Calculated Attribute
Transient Attribute
Transient Attribute
Calculated Attribute
Attribute Validation