Download pdf - XML Data Control - Oracle OpenWorld Preview AMIS - Richard Olrichs en Wilfred van der Deijl

ADF EMG

XML DataControl Powerful and Easy ADF Datacontrol for XML

About Us

Richard Olrichs

MN

www.olrichs.nl

@richardolrichs

Wilfred van der Deijl

The Future Group

www.redheap.com

@wilfreddeijl

Agenda

● History

● Alternatives

● Live product demo

● Summary

XML DataControl History

● Development started at MN in August 2012

● Adopted by Spir-it since March 2014

● Open to the public o ADF EMG sub project

o https://adfxmldc.atlassian.net/wiki

https://adfxmldc.atlassian.net/wiki


Alternatives Calling WebService from ADF

1. ADF WebService DataControl

1. JAX-WS Proxy with Bean DataControl

1. Programmatic Business Components

ADF WebService DataControl Alternatives

● 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 DC Alternatives

● Lots of work: o Generate JAX-WS Proxy classes

o Domain POJO’s

o Mapper classes (and back).

● Labor intensive when services change

● JAX-WS Proxy cannot be used directly as

bean DataControl

o Dates and enumerations not supported

o JAXBElement getters/setters not supported

● Lot of work:

o JAX-WS Proxy

o ViewObjects

o EntityObjects

o Mappers (and back)

● BC is very database (SQL) centric

o Commit, Rollback, Fault-In selects, locking,

connection pooling, etcetera

● Requires extensive coding in ADF BC base

classes

Programmatic ADF BC Alternatives

ADF EMG XML DataControl

Developer’s Guide: “Data controls abstract the

implementation technology of a business service by using

standard metadata interfaces to describe the service's

operations and data collections, including information

about the properties, methods, and types involved.”

● XML Schema is the key

● XML DataControl gets its structure from XSD

● Runtime XML document can come from

anywhere o Web service, Human task payload, Static resource,

or… wherever you like

ADF EMG

ADF EMG

ADF EMG

Demo Time ADF 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 o WSDataProvider - Web Service

o ELDataProvider - Expression Language

o ResourceDataProvider - XML file from classpath

● Nesting DataProviders o Can manipulate dynamic parameters going into the

nested dataprovider

o 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 o UnionFilter - Combines result from multiple providers

o Build your own...

WSDataProvider EmployeeService

<Employee>

<Type>MGR</Type>

…

</Employee>

WSDataProvider ReferenceDataService


<Employee>

<Type>MGR</Type>

…

</Employee>

<EmployeeTypes>

<Type>

<Code>MGR</Code>

<Desc>Manager</Desc>

</Type>

…

</EmployeeTypes>



UnionFilter

<Employee>

<Type>MGR</Type>

…

</Employee>

<EmployeeTypes>

<Type>

<Code>MGR</Code>


</Type>

…

</EmployeeTypes>

<Union>

<Employee>

…

</Employee>

<EmployeeTypes>

...

</EmployeeTypes>

</Union>



UnionFilter

XSLFilter

<Employee>

<Type>MGR</Type>

…

</Employee>

<EmployeeTypes>

<Type>

<Code>MGR</Code>


</Type>

…

</EmployeeTypes>

<Employee>

<Type>MGR</Type>

<TypeDesc>Manager</TypeDesc>

…

</Employee>

<Union>

<Employee>

…

</Employee>

<EmployeeTypes>

...

</EmployeeTypes>

</Union>



CacheFilter

UnionFilter

XSLFilter

<Employee>

<Type>MGR</Type>

…

</Employee>

<EmployeeTypes>

<Type>

<Code>MGR</Code>


</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 o Calculated Attributes

o Transient Attributes

o Attribute Validation

o Element Validation

o Post Attribute Change

o Post Element Created

o Custom operations/methods

Wiki - adfxmldc.atlassian.net/wiki

Next Steps

Subscribe for product announcements:

http://bit.ly/signupxml

Subscribe to ADF EMG:

http://www.adfemg.org

Follow XML DataControl development:








Questions

Demo shots

Creating Data Control

Initial Data Control

in 2 minutes

Dynamic

Parameter from

DataControls.dcx

Drag-Drop

Data Control

onto Page

Dynamic

Parameter value

(typically from EL)

Initial Task Flow

in 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