An Overview of the New Features in ABAP - ADFAHRER

118 Pages·2006·1.76 MB·English

An Overview of the
New Features in ABAP
Agenda
Horst Keller
Knowledge Architect, SAP AG
©SAP AG2006, SAP TechEd’06 / CD200/ 2
Regular Expressions
Shared Objects
Simple Transformations
Checkpoints
ABAP Editor
ABAP Debugger
ABAP Unit
Memory Inspector
Enhancement Framework
Preview of Next Release
Regular Expressions
Shared Objects
Simple Transformations
Checkpoints
ABAP Editor
ABAP Debugger
ABAP Unit
Memory Inspector
Enhancement Framework
Preview of Next Release
Learning Objectives
As a result of this lecture, you will have an
overview
(cid:132) of many of the new ABAP features available with SAP
NetWeaver 04 and SAP NetWeaver 2004s
(cid:132) of the new ABAP features coming with the follow-up release
©SAP AG2006, SAP TechEd’06 / CD200/ 5
Regular Expressions
Shared Objects
Simple Transformations
Checkpoints
ABAP Editor
ABAP Debugger
ABAP Unit
Memory Inspector
Enhancement Framework
Preview of Next Release
Improved Text Processing With REs
Regular Expressions (Regexes, REs) are more powerful than
traditional SAP patterns ( , )
SEARCH txt FOR pat IF txt CP pat
(cid:132) Well understood
– Developed by mathematician Kleene in the 1950s
(cid:132) Powerful
– Highly focused special purpose language
– Many common text processing tasks turn into
simple one-liners
(cid:132) Standardized and widely used
Stephen C. Kleene
Image ©U. of Wisconsin
– Made popular by Unix tools: grep, sed, awk, emacs
– Built into some languages like Perl and Java;
add-on libraries available for many others
– Early Unix de-facto standard formalized in PCRE and POSIX
ABAP supports POSIX regular expressions as of Release 7.00
©SAP AG2006, SAP TechEd’06 / CD200/ 7
Regular Expression Terminology
Regular expressions are built from
(cid:132) Literals
a b c 1 2 3 ä à ß , / = …
(cid:132) Special operators (metacharacters)
. * + ? \ ^ $ ( ) [ ] { }
(cid:132) Prepending \ turns operators into literals
REs match or represent sets of text strings
Match
(cid:132) RE matches text if complete text is represented by RE
REs are commonly used for searching text
Search
(cid:132) Text to be searched may contain one or more matches
(cid:132) Usually interested in left-most, longest match contained in text
©SAP AG2006, SAP TechEd’06 / CD200/ 8
Regular Expressions Quick Check
(cid:132) What is the main difference betweens file system wildcards
like *.jpg and regular expressions?
files: * = sequence of characters
REs: * = general repetition, requires specification
of what should be repeated;
sequence of characters becomes .*
(cid:132) How are SAP patterns
pat pat+ *pat p#*t
written as regular expressions?
pat pat. .*pat p\*t
©SAP AG2006, SAP TechEd’06 / CD200/ 9
Regex Reference Chart (1)
Name Operator Matches
Literals a literal character
\* turn special operator * into literal character *
Wildcard . any character
Repetitions r* zero or more repetitions of r
r+ one of more repetitions of r
r{m} exactly m repetitions of r
r{m,n} at least m and at most n repetitions of r
r? optional r, i.e., zero or one repetition of r
Alternatives r|s either r or s
Sets [abc] any literal character listed
[^abc] any literal character NOT listed
[a-z] any literal character within range listed (can be combined
with above)
Classes [:alpha:] any letter, including non-latin alphabets
(to be used [:digit:] [:xdigit:] any digit 0-9/hex digit 0-9A-F
within sets) [:alnum:] [:word:] [:alpha:] plus [:digit:]/same plus '_' character
[:upper:] [:lower:] any uppercase/lowercase character
[:space:] [:blank:] any whitespace character/blank or horizontal tab
[:punct:] [:graph:] any punctuation/graphical character
[:print:] [:cntrl:] any printable/control code character
[:unicode:] any Unicode character above ASCII 255
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