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Mail: j_schuster@me.comTwitter : @JuergenSchusterWeb: juergen-schuster-it.de

APEX-Homepage: apex.worldAPEX Podcast: apex.press/talkshow

Dynamic Actions Examples: dynamic-actions.com

apex.world

•Oracle (13 Years)

Who am I

•Freelancer (6 Years)•APEX > 10 Years•Other: Java, Ext-JS, QlikView, HANA SAP UI 5

•The guy with the stickers

•apex.press/talkshow

apex.world

Founder of apex.world

Who am I

apex.world

•Why Webservices?

Agenda

•What are Webservices?

•ORDS (Oracle REST Data Services)

•Project Example

•REST in APEX

apex.world

•Why Webservices?

Agenda

•What are Webservices?

•ORDS (Oracle REST Data Services)

•Project Example

•REST in APEX

apex.world

APEX - REQUEST

Apache with mod_plsql

A P A C H E

https://apex.world/pls/f?p=…

Database Apex Engine

ORACLE

APEX

/pls/

/i/ = .jpg; .png; .css; .js

modplsql

f?p=…

(OCI)

HTML / JSON

HTMLJSON

HTML / JSON

SQLData

Browser

apex.world

Why Webservices?

•Access to Data NOT in the Oracle DB (Social Media)

•Leave the Data where they are

•Simple: Client, Server, Stateless, Readable, pure HTTP we already know

•Reliable: Roy Fielding “How the Web works and why it works well"

• Fast: Caching, Compressing, Scalable, Incremental Rendering, Pre-Fetching

•Leverage the amazing productivity of APEX

apex.world

APEX - REST - REQUEST

Apache with mod_plsql

A P A C H E

https://apex.world/pls/f?p=…

/i/ = .jpg; .png; .css; .js

modplsql

f?p=…

(OCI)

Dat

a / J

SON

https://…/em

p

HTML / JSON

HTML / JSON

/pls/HTMLJSON

Browser Database Apex Engine

ORACLE

APEX

SQLData

REST

apex.world

•Why Webservices?

Agenda

•What are Webservices?

•ORDS (Oracle REST Data Services)

•Project Example

•REST in APEX

apex.world

What are Webservices?

•SOAP (“Simple” Object Access Protocol)•Complex XML, Parser, WSDL, Envelopes, Verbose•XML only, Nested Object Structures? Extra Protocol•Legacy, not so simple, not relevant anymore

apex.world

What are Webservices?

•REST (Representational State Transfer)•Really Simple, uses the well known HTTP commands

http://apex.world/ords/orders

REST CRUID SQLGET Read SELECT

POST Create INSERT

PUT Update/Create UPDATE/CREATE

DELETE Delete DELETE

•No extra Protocol like SOAP, JSON inMemory 12.2

apex.world

•Why Webservices?

Agenda

•What are Webservices?

•ORDS (Oracle REST Data Services)

•Project Example

•REST in APEX

apex.world

APEX - SAP HANA

Apache with mod_plsql

A P A C H E

https://apex.world/pls/f?p=…

/i/ = .jpg; .png; .css; .js

modplsql

f?p=…

(OCI)

Dat

a / J

SON

https://…/em

pSAP-HANA

via REST

HTML / JSON

HTML / JSON

/pls/HTMLJSON

Browser Database Apex Engine

ORACLE

APEX

SQLData

apex.world

Native Webdevelopment with SAP UI5?

•Around 20 times longer

•Around 20 times more complicated

•Around 20 thousand times more Sourcecode

•Around 20 times higher maintenance costs

apex.world

APEX - SAP HANA - Thoughts

•Usual APEX development w/o restrictions

•Use PL/JSON - Today APEX_JSON 4 times faster

•Use Pipelined Table Functions

apex.world

APEX - SAP HANA - Thoughts

APEX: select * from table(my_package.my_func(p_param))

function my_func(p_param)

return my_rec_table

pipelined

is

begin

-- Do http call to REST Service

-- Parse the result

-- Pipe Row

end;

apex.world

APEX - SAP HANA - Reality

•8ms / record - PL/JSON

•5ms / record - Own specialized JSON Parser

•3ms / record - Own CSV parser

•1ms / record - CSV parsing Steven Feuerstein

=> 1 second 1000 records 10 seconds for 10 000!

Decision: Live with it, we have 1000 records max.

apex.world

APEX - SAP HANA - Room for Improvement

•Use APEX_JSON (4 times faster than PL/JSON)

•Use 12.1.0.2 SQL-JSON Egine (100-times faster)

•Pushes the Limit to 100 000 records, no final solution

apex.world

APEX - SAP HANA - Final Solution

•Only fetch the records shown on the screen

•Overwrite Pagination and Sorting in Standard-Report

•No Interactive Report anymore

•Wait for APEX 6.0? Working with REST-Sources natively?

•The next big Step (Mike Hichwa, APEX Podcast March 2015)

apex.world

APEX - SAP HANA - with Dynamic Actions

apex.world

•Why Webservices?

Agenda

•What are Webservices?

•ORDS (Oracle REST Data Services)

•Project Example

•REST in APEX

apex.world

ORDS

•Read REST only? You don’t need ORDS !

•But you should!

apex.world

ORDS advantages over mod_plsql

Connection Pooling

PDF-PrintingVirus-Scanner

Post > 32K

Excel-UploadOAuth2

Cashing

REST Hooks

Multiple DBs

SODA

apex.world

Tomcat

Glas

sfish

Weblogic

Jetty

APEX - ORDS - REST - Consume External

https://apex.world/ords/f?p=…

/i/ = .jpg; .png; .css; .js

f?p=…

(JDBC thin)

Dat

a / J

SON

https://…/em

p

REST

HTML / JSONHTML / JSON

apex.world

ORDS

ORDS

(Java)

Browser Database Apex Engine

ORACLE

APEX

SQLData

apex.world

Database Apex Engine

ORACLE

APEX

APEX - Apache - ORDS - REST - Consume External

https://apex.world/ords/f?p=…

/i/ = .jpg; .png; .css; .js

f?p=…

(JDBC thin)

Dat

a / J

SON

https://…/em

p

REST

HTML / JSON

HTML / JSON

apex.world

Tomcat

Glas

sfish

Weblogic

ORDS

ORDS

(Java)

Apache with mod_jk

A P A C H E

HTML / JSONmod

jk

/ords/HTMLJSON

Fire

Wall

f?p=…

(AJP)

Browser

SQLData

apex.world

APEX - ORDS - REST Publish

https://.../ords/orders(4711) SQL

(JDBC thin)

ORALCE CursorJSON

apex.world

Tomcat

Glas

sfish

Weblogic

ORDS

ORDS

Map & Bind

REST Call ORACLE Database

ORACLE

Transform to JSON

apex.world

•Why Webservices?

Agenda

•What are Webservices?

•ORDS (Oracle REST Data Services)

•Project Example

•REST in APEX

apex.world

APEX - REST - Consume Internal

Apache with mod_plsql

A P A C H E

https://apex.world/pls/f?p=…

/i/ = .jpg; .png; .css; .js

modplsql

f?p=…

(OCI)

Dat

a / J

SON

https://…/em

p

REST

HTML

HTML

/pls/HTMLJSON

Browser Database Apex Engine

ORACLE

APEX

Collection

apex.world

APEX - REST - Consume

apex.world

APEX - REST - Consume

apex.world

APEX - REST - Consume

apex.world

APEX - REST - Consume

apex.world

APEX - REST - Consume

apex.world

APEX - REST - Consume

apex.world

APEX - REST - Consume Internal - Whats Missing

•REST Result as JSON stored in Collection Blob as document only

•Need to apply APEX_JSON -> another Collection

apex.world

“APEX” - REST - Publish

•You need to have ORDS

•You can do the definitions in APEX or ORDS

•But it is always performed by ORDS

•Actually it has nothing to do with APEX

apex.world

REST - Publish - APEX Definition

apex.world

REST - Publish - ORDS Definition

apex.world

Conclusions

•Read REST? No ORDS needed but you should!

•Publish REST form Oracle DB -> Need ORDS

•Deal with a JSON Result in the DB -> SQL 12.1.0.2

•Deal with JSON Result in PL/SQL -> APEX_JSON

Mail: j_schuster@me.comTwitter : @JuergenSchusterWeb: juergen-schuster-it.de

APEX-Homepage: apex.worldAPEX Podcast: apex.press/talkshow

Dynamic Actions Examples: dynamic-actions.com