Mail: Web: juergen-schuster-it.de

Transcription

1 Mail: Web: juergen-schuster-it.de APEX-Homepage: APEX Podcast: apex.press/talkshow Dynamic Actions Examples: dynamic-actions.com

2 Who am I Oracle (13 Years) Freelancer (6 Years) APEX > 10 Years Other: Java, Ext-JS, QlikView, HANA SAP UI 5 The guy with the stickers apex.press/talkshow

3 Who am I Founder of

4 Agenda Why Webservices? What are Webservices? Project Example ORDS (Oracle REST Data Services) REST in APEX

5 Agenda Why Webservices? What are Webservices? Project Example ORDS (Oracle REST Data Services) REST in APEX

6 APEX - REQUEST /i/ =.jpg;.png;.css;.js HTML / JSON A P A C H E ORACLE /pls/ HTML JSON Data SQL mod plsql HTML / JSON (OCI) f?p= APEX Browser Apache with mod_plsql Database Apex Engine

7 Why Webservices? Access to Data NOT in the Oracle DB (Social Media) Leverage the amazing productivity of APEX Leave the Data where they are Simple: Client, Server, Stateless, Readable, pure HTTP we already know Fast: Caching, Compressing, Scalable, Incremental Rendering, Pre-Fetching Reliable: Roy Fielding How the Web works and why it works well"

8 APEX - REST - REQUEST REST /i/ =.jpg;.png;.css;.js HTML / JSON A P A C H E Data / JSON /emp ORACLE /pls/ HTML JSON Data SQL mod plsql HTML / JSON (OCI) f?p= APEX Browser Apache with mod_plsql Database Apex Engine

9 Agenda Why Webservices? What are Webservices? Project Example ORDS (Oracle REST Data Services) REST in APEX

10 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

11 What are Webservices? REST (Representational State Transfer) Really Simple, uses the well known HTTP commands No extra Protocol like SOAP, JSON inmemory REST CRUID SQL GET Read SELECT POST Create INSERT PUT Update/Create UPDATE/CREATE DELETE Delete DELETE

12 Agenda Why Webservices? What are Webservices? Project Example ORDS (Oracle REST Data Services) REST in APEX

13 APEX - SAP HANA SAP-HANA via REST /i/ =.jpg;.png;.css;.js HTML / JSON A P A C H E Data / JSON /emp ORACLE /pls/ HTML JSON Data SQL mod plsql HTML / JSON (OCI) f?p= APEX Browser Apache with mod_plsql Database Apex Engine

14 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

15 APEX - SAP HANA - Thoughts Usual APEX development w/o restrictions Use PL/JSON - Today APEX_JSON 4 times faster Use Pipelined Table Functions

16 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;

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

18 APEX - SAP HANA - Room for Improvement Use APEX_JSON (4 times faster than PL/JSON) Use SQL-JSON Egine (100-times faster) Pushes the Limit to records, no final solution

19 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)

20 APEX - SAP HANA - with Dynamic Actions

21 Agenda Why Webservices? What are Webservices? Project Example ORDS (Oracle REST Data Services) REST in APEX

22 ORDS Read REST only? You don t need ORDS! But you should!

23 ORDS advantages over mod_plsql Connection Pooling Post > 32K Virus-Scanner PDF-Printing SODA Multiple DBs REST Hooks OAuth2 Excel-Upload Cashing

24 APEX - ORDS - REST - Consume External Tomcat REST Jetty /i/ =.jpg;.png;.css;.js HTML / JSON Glassfish O R D S (Java) Weblogic HTML / JSON (JDBC thin) Data / JSON /emp ORACLE Data SQL f?p= APEX Browser ORDS Database Apex Engine

25 APEX - Apache - ORDS - REST - Consume External REST Tomcat Browser /i/ =.jpg;.png;.css;.js HTML / JSON A P A C H E /ords/ HTML JSON mod jk Apache with mod_jk Fire Wall (AJP) f?p= HTML / JSON Glassfish O R D S (Java) ORDS Weblogic (JDBC thin) f?p= HTML / JSON Data / JSON /emp ORACLE Data SQL APEX Database Apex Engine

26 APEX - ORDS - REST Publish Tomcat O R D S ORACLE JSON Glassfish Transform to JSON Map & Bind Weblogic ORALCE Cursor (JDBC thin) SQL REST Call ORDS ORACLE Database

27 Agenda Why Webservices? What are Webservices? Project Example ORDS (Oracle REST Data Services) REST in APEX

28 APEX - REST - Consume Internal REST /i/ =.jpg;.png;.css;.js HTML /pls/ A P A C H E HTML JSON mod plsql HTML (OCI) f?p= Data / JSON /emp ORACLE APEX Collection Browser Apache with mod_plsql Database Apex Engine

29 APEX - REST - Consume

30 APEX - REST - Consume

31 APEX - REST - Consume

32 APEX - REST - Consume

33 APEX - REST - Consume

34 APEX - REST - Consume

35 APEX - REST - Consume Internal - Whats Missing REST Result as JSON stored in Collection Blob as document only Need to apply APEX_JSON -> another Collection

36 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

37 REST - Publish - APEX Definition

38 REST - Publish - ORDS Definition

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

40 Mail: Web: juergen-schuster-it.de APEX-Homepage: APEX Podcast: apex.press/talkshow Dynamic Actions Examples: dynamic-actions.com