01_ABAP_on_HANA

ABAP on HANA

SoH Technology Training

© 2013 SAP AG. All rights reserved. 2

Disclaimer

This presentation outlines our general product direction and should not be relied on in making a

purchase decision. This presentation is not subject to your license agreement or any other agreement

with SAP. SAP has no obligation to pursue any course of business outlined in this presentation or to

develop or release any functionality mentioned in this presentation. This presentation and SAP's

strategy and possible future developments are subject to change and may be changed by SAP at any

time for any reason without notice. This document is provided without a warranty of any kind, either

express or implied, including but not limited to, the implied warranties of merchantability, fitness for a

particular purpose, or non-infringement. SAP assumes no responsibility for errors or omissions in this

document, except if such damages were caused by SAP intentionally or grossly negligent.


HANA Platform

Development

Experience

Consumption

HANA Data Platform (DB)

HANA Application Platform

HANA Cloud Platform

HANA

XS

ABAP Java

Native Device

Business Expert / RDE

JavaScript

Browser

Professional Developer / IDE

Agenda

Apps

HANA Database

Application Server ABAP

Development Tools

Porting your Apps

DB

Data Store

Application Logic

Views Procedures


HANA Database

HANA

ABAP Java

DB Application Logic

Views Procedures

Data Store

Column and

row store Multi-core/

parallelization

In-memory

Compression

SQLScript Attribute, Analytics

& Calculation Views

JDBC DBI

R R

others

ODBC/ODBO

R

Database

Connection

SQL/MDX

R

XS JavaScript


DBs typically use a row-based storage; SAP HANA supports rows, but is optimized

for column-order data organization Order Country Product Sales

456 France corn 1000

457 Italy wheat 900

458 Italy corn 600

459 Spain rice 800

Column and Row Store

456 France corn 1000

457 Italy wheat 900

458 Italy corn 600

459 Spain rice 800

456

457

458

459

France

Italy

Italy

Spain

corn

wheat

corn

rice

1000

900

600

800

Row order organization

Column order organization

Single-record access:

SELECT * FROM SalesOrders

WHERE Order = ‘457’

SQL

Single-scan aggregation:

SELECT Country, SUM(sales) FROM

SalesOrders WHERE Product=‘corn’ GROUP BY

Country


Concurrent users

Concurrent operations within a query

Data partitioning, on one host

or distributed to multiple hosts

Horizontal and vertical

parallelization of a single query

operation, using multiple

cores / threads

Transparent to app developer

Parallelization

quant.

150

60

100

45

75

84

96

162

45

366

sales

$1000

$900

$600

$800

$500 $750

$600

$600

$1100

$450

$2000

type

43

12

12

33

33

12

32

43

12

33

core3

core4

core1 core2


HANA Database

HANA

ABAP Java


Views Procedures

Data Store

Column and


parallelization

In-memory

Compression


& Calculation Views

JDBC DBI

R R

others

ODBC/ODBO

R

Database

Connection

SQL/MDX

R

XS JavaScript


Development in SAP HANA

SAP HANA provides two essential techniques for expressing operations

on data:

• Column Views allow to easily define optimized data models for fast read

access based on database tables and views. They support standard

operations (e.g. joins, aggregations, filters) but also business functions

(e.g. for currency/measure conversion).

Column views can be modeled via graphical tools or implemented via

SQLScript in SAP HANA studio. After activation, the generated views can

be accessed via standard SQL.

• Stored Procedures allow to implement data intensive logic via

SQLScript. Procedures can have multiple importing and exporting

parameters (scalar or table types).

Both Column Views and Procedures are highly optimized to leverage the

engines in SAP HANA and can make use of advanced features like built-in

library functions, text analysis and data mining.


HANA Database

HANA

ABAP Java

DB Application Logic Column

Views Procedures

Data Store

Column and


parallelization

In-memory

Compression


& Calculation Views

JDBC DBI

R R

others

ODBC/ODBO

R

Database

Connection

SQL/MDX

R

R HTTP

XS JavaScript

HTTP Client (Browser, Mobile)


Development

Experience

Consumption



HANA Cloud Platform

HANA

XS

ABAP

Java

Native Device


JavaScript

Browser


Agenda

HANA Database


Development Tools

Porting your Apps


Views Procedures

Data Store


SAP Business Suite powered by SAP HANA Unifying analytics and transactions into a single in-memory platform

Real-Time

Execution

Real-Time

Reporting

and Analysis

Real-Time

Interactions

Real-Time

Planning

Real-Time

Platform

The Most Modern Business Platform for Innovation Without Disruption


SAP NetWeaver AS ABAP 7.4

Overview

ABAP 7.4 release strategy

• ABAP 7.4 is an enhancement package for NetWeaver 7.x

• Underlying application server for SAP Business Suite and

SAP NetWeaver BW

• Available already; GA is planned for May 2013

• There is no formal ramp-up for ABAP 7.4

Major structural news in AS ABAP 7.4

• New ABAP kernel version 7.40 supporting new ABAP

server and runtime features

• NetWeaver Gateway and SAPUI5 are part of AS ABAP 7.4

• ABAP Development Tools are part of the SAP Eclipse

Release Train (central update site for SAP Eclipse tools)

SAP NetWeaver AS ABAP 7.4 is the “to-go” release for all SAP HANA based ABAP applications

SAP

NetWeaver

BW

SAP

Business

Suite

Custom Applications

...

ABAP Development Tools for SAP NetWeaver

SAP HANA Database


Any DB


ABAP Development on SAP HANA

Accelerate, Extend, Innovate using proven SAP NetWeaver qualities

Benefits for customers and partners

• Proven – Built on mature NetWeaver qualities

• Efficient – Leverage existing investments and skills

• Non-disruptive – Step-wise approach possible

CR

M

SC

M

SR

M

PL

M

ER

P

An

aly

tics

SAP Business Suite

BW

Ap

ps

HANA DB

Custom Development Opportunities

EXTEND ACCELERATE

INNOVATE

Guided performance optimizations

Real-time access to any data

Advanced view building

From batch to interactive

Text search

Predictive Analysis



Bringing the power of SAP HANA to the end-user

ABAP 7.4 will support this through existing UI technologies

• New ALV variant supporting fast navigation through large data sets

(usable in SAP GUI and Web Dynpro ABAP Floorplan Manager)

• Fault-tolerant value helps using SAP HANA text search

• Analytical side-panels allowing non-disruptive enrichment of

transactions providing additional insights for end-users

• New possibilities for combining transactional and analytical data in new

consumption scenarios through NetWeaver Gateway / SAPUI5

• Full suite of SAP BI clients supported based on embedded BW

The most important benefit of SAP HANA is to support customers to make smarter and faster decisions.

The power of SAP HANA has to “reach the end-user” by simplifying concrete business processes.



Options for customer / partner developments

SAP

Business

Suite

SAP

HANA Any DB

Customer

/ Partner

SAP

Business Suite

SAP HANA

CD /

PD SAP

Business

Suite

SAP

HANA Any DB

CD /

PD

SAP

NetWeaver BW

SAP HANA

CD /

PD Customer / Partner

Development

SAP HANA

1) Accelerators for

Add-Ons

2) Add-Ons for SoH 3) New applications

(side-by-side with

Business Suite)

4) Add-Ons for

NetWeaver BW

5) New applications

(no direct link to

Business Suite)

customer-specific

developments in SoH context

enable existing Add-Ons to

run on SoH

optimize them for SAP HANA

technology

develop completely new

Add-Ons for SoH

develop new applications

running side-by-side with

Business Suite (similar HPAs)

specifically designed and

implemented for SAP HANA

technology

customer-specific

developments in NetWeaver

BW context

along the lines of 2)

develop new applications

(but no direct link to Business

Suite)

along the lines of 3)

accelerate existing Z-coding,

develop application-specific

accelerators

possible also with ABAP 7.x

CD / PD = customer development / partner development


Development

Experience

Consumption



HANA Cloud Platform

HANA

XS

Java

Native Device


JavaScript

Browser


Agenda

HANA Database


Development Tools

Porting your Apps


Views Procedures

Data Store

ABAP



Code Pushdown as paradigm

Push data-intensive calculations to SAP

HANA leading to less data transfer

Exploit advanced SAP HANA

capabilities from ABAP

Development on each layer



Overview: Integrated Development Experience based on Eclipse

• It is possible to install the new ABAP Development

tools for SAP NetWeaver into the SAP HANA studio

via the Eclipse update site mechanism.

• This integrated installation offers developers a

combined environment for end-to-end application

development with ABAP on SAP HANA including

Lifecycle Management aspects.

• ABAP 7.4 provides a reference scenario (Open

Items Analytics) which demonstrates how to develop

an ABAP application on SAP HANA, and in

particular how to integrate into existing user

interface technologies such as Web Dynpro ABAP

Floorplan Manager and SAPUI5.



Column Views

SAP HANA offers advanced view modeling, e.g.

• Attribute views (join views)

• Analytic views (star schemas)

• Calculation views (modeled or coded via SQL script)

These views can be accessed by standard SQL (see example)

• With ABAP < 7.4 these views can only be accessed low-level

via native SQL (ADBC)

• With ABAP 7.40 they are natively supported in ABAP

• Access possible via standard Open SQL

• Support for automatic client handling

• Mapping to DDIC types possible



Database Procedures

SAP HANA offers writing stored procedures in SQLScript –

a extension to SQL - for expressing data intensive application

logic.

Stored procedures are invoked via the CALL SQL statement

by passing the importing and exporting parameters (which

can be scalars or table types)

• With ABAP < 7.40 stored procedures can be called using

ADBC, which requires

• Manual handling of transfer tables for input and output

parameters via temporary tables or result views

• Manual mapping of database types to DDIC types

• With ABAP 7.40 they are natively supported in ABAP

• Exporting/Importing parameters like for function modules

(including mapping parameter to DDIC types)

Demo Accessing SAP HANA views and procedures from ABAP


Example: create and use a

HANA Attribute View


Proxy


Remark

• Open SQL

enhancement

available as of

NW 7.40 SP 2


Example: use a HANA

SQL Procedure


Proxy


Remark

• New ABAP

language element

available as of

NW 7.40 SP 2


R

Development Experience

HANA


Views Procedures

NW AS ABAP 7.40

Code Pushdown – Buttom-up

HANA Studio

ABAP

Development

Tools

XS

Orchestration (ABAP Coding)

External

DDIC Views

Procedure

Proxies

SQL B

ottu

m-u

p

1. Modelling

2. Consumption


R

Development Experience

HANA


Views Procedures

NW AS ABAP 7.40

Code Pushdown – Top-down

HANA Studio

ABAP

Development

Tools

XS


Views ABAP managed

Procedures

SQL

To

p-d

ow

n

Modelling &

Consumption

Not needed for

ABAP development

in future

Gene

rate


Core Data Services (CDS)

A homogeneous approach for modeling of SAP data

Java ABAP

River / XS H

AN

A (

DB

)

Core Data Services

Calc Engine SQL Script (S)QL Engine

DDL QL DML …

Other… RDL JS

Extend SQL to capture

the business intent avoiding

complex & error prone statements

Provide

Database-/

HANA

optimized

programming

model

Harmonize the programming model across all

SAP platforms on HANA to ensure reuse and

interoperability


R

HANA DB

Application Logic

Views Procedures

NW AS ABAP 7.40

Code Pushdown – Runtime

XS


Procedure

Proxies

External

DDIC Views

SQL

NW AS ABAP < 7.40

select ..

from ..

call

database

procedure ..

DBI ADBC Open SQL IF

cl_sql_connection=>get_connection ()

execute_query( ‚SELECT .. <view>‘ )

execute_query(‚CALL <procedure>‘)

NW ABAP < 7.40

• native SQL via

ABAP database

connectivity

(ADBC) is a valid

option


Development

Experience

Consumption



HANA Cloud Platform

HANA

XS

Java

Native Device


JavaScript

Browser

Professional Developer

Agenda

HANA Database


Development Tools

Porting your Apps


Views Procedures

Data Store

ABAP

Customer / Partner

Applications

Hans-Jürgen Hennrich

March 2013

How to adapt Add-ons for SoH


Mandatory Steps


Column Store vs. Row Store

The HANA Database consists of a row storage and a column storage

The default storage is the column store

All existing tables are automatically created in the column store during deployment of an Add-on (using

transaction SAINT) into an ECC System running on HANA

Using transaction SE13 (tab strip DB specific attributes), you can check which store is used in case of HANA

Example:


Column Store vs. Row Store

Recommendation: Use column store for all existing and new tables of your add-on

The row store should only be used in very exceptional cases. Reasons why a table should be in

row store:

Very huge OLTP load on the table (huge rate of single updates / inserts / deletes)


New OpenSQL Compiler

New OpenSQL compiler is active as of NW7.4 SP2

New compiler identifies syntactically wrong coding (errors) which were ignored before.

Ignoring these errors in existing coding leads to unintended application behavior.

Each errors in existing coding will either result in build errors or runtime errors.

For background information see SAP note 1832139 - OpenSQL runtime environment

The risk of having errors in your code is very low

For the whole ERP around 10 corrections had to be made


Optional Steps


Optimize your Code

HA400 – Programming on SAP HANA

Provides information how to leverage the power of HANA for your applications/coding

The course is currently based on NW 7.31

– the concepts how to improve coding for HANA are the same in NW 7.40

– but the development tools are significantly improved in NW 7.40


Optimize your Code

Reasons why to optimize your code?

With HANA, SQL statements can be processed extremly fast

– the bottleneck is no longer the database, but the transfer of the results to the application server

– therefore new programming paradigms are needed: move calculations into the database

OLTP applications typically use select single

– Select single on HANA (column store) is up to two times slower compared to a traditional database

– Avoid selects single in loops and nested selects


Detect optimization potential on SAP HANA

Performance Tools and Guidelines

Outlook: new tools for “Guided Optimization”

(ABAP 7.4 SP2; RTC May 2013)

• Improved ABAP profiler and new SQL monitor for runtime

analysis

• New performance checks in ABAP code inspector

• “Worklist tool” combining results from code checks and

runtime analysis

Adapted Performance Guidelines

• Existing golden rules remain valid as general

recommendations

• There are some shifts of priorities (e.g. index definition

(lower) and avoidance of nested selects (higher))

• Available in SCN

http://scn.sap.com/community/abap-for-hana

Key takeaways and Outlook



Tools and best practices provided with ABAP 7.4

• Advanced view building in ABAP

• Guidelines, check tools, and best practices

• New ABAP profiler and SQL monitor in Eclipse

• Native access to all SAP HANA features from ABAP

with proven SAP NetWeaver lifecycle management

• Integrated development environment across ABAP and

SAP HANA in Eclipse

• New usage options in existing environments (e.g.

ALV with integrated data access, fault tolerant

search helps, etc.)

• Built upon proven SAP NetWeaver business

frameworks and extensibility concepts

Accelerate

Extend

Innovate



What changes – and what doesn’t

No Change

AS ABAP as a strong pillar of

SAP’s product strategy with

commitment to non-disruptive

innovation and the existing

eco-system

Core architecture and qualities

of the AS ABAP remain the

same (kernel, data dictionary,

security, connectivity, etc.)

Change

Challenge existing application

and component designs

Good SQL knowledge as the

key enabling skillset

Eclipse as integrated

development environment

across SAP HANA and ABAP

(and other domains, e.g.

SAPUI5)


HANA Platform

HANA

XS

ABAP Java

JavaScript

DB

Data Store

Application Logic

Views Procedures

Suite Openess Embedded


HANA XS in a nutshell

HANA

ABAP Java


Views Procedures

Data Store

Column and


parallelization

In-memory

Compression


& Calculation Views

JDBC DBI

R R

others

ODBC/ODBO

R

Database

Connection

SQL/MDX

R

R HTTP/OData

XS JavaScript


SQL

Presentation

Logic


HANA View

Entity name

(used to call that service

via HTTP)

Entity name (used to call that service via HTTP)


Package Odata service definition file


Odata service entity name


Odata service definition file

Odata service entity name


HANA XS

HANA

ABAP Java


Views Procedures

Data Store

Column and


parallelization

In-memory

Compression


& Calculation Views

JDBC DBI

R R

others

ODBC/ODBO

R

Database

Connection

SQL/MDX

R

R HTTP/OData

XS JavaScript


SQL

Open Data Protocol


Development

Experience

Consumption



HANA Cloud Platform

HANA

XS

Java

Native Device


JavaScript

Browser

Professional Developer

Questions

&

Answers


Views Procedures

Data Store

ABAP

Customer / Partner

Applications

Thank you

Contact information: [email protected]


Code pushdown: Top down

Advanced ABAP view building via Core Data Services (CDS)

ABAP

<<Resource>> View Definition

SAP HANA

DDIC

Activation Transport

CDS-DDL Compiler

Calc Engine

Other DB

SQL DDL Compiler

ABAP in Eclipse

Text-based View Editor

Graphical View Editor

CREATE CDS VIEW …

<CalcXML>…

CREATE VIEW …

Table Definitions

SQL Engine

CREATE VIEW …

CDS-QL Views

OpenSQL

SQL 92 HANA SQL

Column Views “One View Model” (= CDS View Entity)

The first step to leverage CDS in ABAP is to

massively improve the view building

capabilities in ABAP

• Support “standard” SQL feature even

beyond current Open SQL capabilities (e.g.

UNIONs).

• Possibility to support SAP HANA specific

extensions via annotations

• Combine native SAP HANA development

with proven ABAP platform qualities

(Lifecycle Management, Extensibility)

01_ABAP_on_HANA

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Transcript of 01_ABAP_on_HANA