Problem about logical database programming

Dear all,
I have a logical database PRPS_R which contail PRPS and some additional fields.
In my abap report, I call this logical database by "GET PRPS_R". Can I ask how to perform sorting to the logical database in ABAP report?
Thanks
Sunny

PRPS_R is a structure of logical database PSJ
there is a user-exit available EXIT_FDBPS000_001

Similar Messages

Problem with Logical Database DDF

Hey All,
I have a problem with Logical Database DDF.
In my program I am typing this
GET KNA1 based on selection screen. It is bringing back everything I want except BRAN1 whereby the field is ''. However in SE16 for KNA1 and for the same KUNNR, the field is populated with 'T180'
I am not understanding this?! I thought LDB where menat to make things easy!!

I think it's not used by DDF.
so you must check it with:
check kna1-bran1 in s_bran1.
A.

Problem with logical database ADA

I am trying to create query with asset values and master data fields but when trying to use logical database ADA I am getting error No component exists with the name "VALUE0". .InfoSet Cannot be Used for InfoSet Query.
Does anyone have an idea about such problem?

Hi,
The message "No component exists with the name "VALUE0"" created when you omit to edit the field group only happens if no field is assigned to a fieldgroup, it should not appear if you add at least one field to a field group.
regards Bernhard

Problem with logical database DDF in ABAP query

Hi All,
I have created an ABAP query via the transaction SQ01 using the logical database DDF to retrieve customer master data from tables KNA1 & KNB1. The selection screen used is the screen 903 of the logical database DDF. But now the problem is that when I execute the query, I am getting a blank value in the tax code4(KNA1-STCD4) field though there is value in the KNA1 table for this particular field. This field was added to the table by means of a customizing include. Can anyone suggest a way to get around this problem so that I can view the content of the field STCD4 in the query.
Thanks and regards,
Sarath.

I think it's not used by DDF.
so you must check it with:
check kna1-bran1 in s_bran1.
A.

Problem in logical database.

Hi experts,
I'm creating a logical database. It is populating only at the end and its not updating for the earlier records at all. Only the last record gets printed and not the previous records at all. WHAT MIGHT BE THE REASON. help me pl.

Hi Vishwa,
Check whether you have called your last secondary node with LATE command in your driver program.
Regards
Vinodh

Idea about Logical DataBase

Hi,
Can, programming with LDB, be considered as an object programming.. just VB, which is an object programming language.
That is we r creating an Object directly and using when ever we want. It is different from OOP where we create a class and instantiate the class to create an object.
My next question is:
There are 2 transactions which we will create, which are basically same except for a text field.
First transaction is posting. And the second one is a reverse posting. In the second transaction we have the reason for reverse posting.
I think in this case we can use LDB and it is the typical scenario where we can apply LDB concept.
Please evaluate me.
-Naveen.

Hi NaveenKumar,
 Logical databases are special ABAP programs that retrieve data and make it available to application programs. The most common use of logical databases is to read data from database tables by linking them to executable ABAP programs.
 However, from Release 4.5A, it has also been possible to call logical databases using the function module LDB_PROCESS. This allows you to call several logical databases from any ABAP program, nested in any way. It is also possible to call a logical database more than once in a program, if it has been programmed to allow this.
 Logical databases contain Open SQL statements that read data from the database. You do not therefore need to use SQL in your own programs. The logical database reads the program, stores them in the program if necessary, and then passes them line by line to the application program or the function module LDB_PROCESS using an interface work area.
Tasks of Logical Databases
1.Reading the same data for several programs.
2.Defining the same user interface for several programs.
3.Central authorization checks
4.Improving performance
First part of your question

 So,if i am not wrong, LDB cannot be completely considered as object oriented programmming.
 I have highlighted some important points above
For understanding this in detail you can go through the sap help .(if you donot know go through the below path
sap library
+ Basis Components
 -Abap Programing and runtime enviornment
 -BC-ABAP Programming(noe serach for ldb
Now your second part of question.
 In the scenario which you have mentioned we can use ldb.But i am not sure whether it is a typical scenario of ldb.LDB is just a specific access routine to support database access for some application (report generation) needs.We can define a logical database to shorten our ABAP coding .
 Here I am mentioning a link which shows a complete implementation of an LDB.
http://homepages.wmich.edu/~r2raviko/HandsOnQuest/HO9.doc
 I suppose after going through the reply(or sap help) and the link mentioned above all your doubts regarding LDB will be cleared.
Thanks & Regards
Pawan P. Khilari
*Please Mark Helpful Answer

About Logical Database

Hi gurus,
How to restrict the retrieving of data using logical database? I mean, i have a requirement of retrieving Open transaction data only for my program. i used CHECK keyword as well as IF statement but it doesnt work...can anyone tells me those commands that i could use for logical database?? then pls give me some idea also for summation of data (Quantity)
thanks,
nips

Hi,
You simply add the check in the relevant GET event of the LDB.
For example, you may have an event for DOCUMENT as follows.
GET DOCUMENT.
check document-ref in s_ref.
S_REF being your new select option.
a®

Problem with logical Database PRHI

Hello all,
which table contains the internal structure RPSCO_X ??
Logical database PRHI
Profil TPIK3
I need to display the application of funds. (cokp1 ?)
Thanks for your help.

Solved

Help needed in Logical Database Programming

Hello Gurus,
I am working on a Report on ASSET ACTIVITY BY DATE RANGE .
The program is copied from std. program S_ALR_87011990.
The above std. program displays for the whole financial year. This is modified for a particalar period range in the new leveraged program.
My question is in the below code.
We are fetching data using LDB ADA. The statement "GET anlcv" works fine here, I mean Sy-subrc is 0 and anlcv structure has some data in it.
When it comes to statement "GET anepv" in the below code, we are not getting any data into that structure and sy-subrc NE 0. Then it is skipping all the get statements and directly going to statement " PERFORM abga_simulieren.".
My logic lies in between this Get statement and the perform statement. When i see it in debugging mode my statement is not executed at all.
What needs to be done. Please anyone help me.
GET anlcv.
CHECK select-options.
MOVE anlcv TO sav_anlcv.
GET anepv.
CHECK select-options.
Nur Bewegungen des Jahres des Berichtsdatums durchlassen.
CHECK anepv-bzdat GE sav_gjbeg.
CHECK anepv-bzdat IN so_bzdat. "Added for SIR-3132
Bewegungen in SAV_ANEPV sammeln.
MOVE anepv TO sav_anepv.
APPEND sav_anepv.
GET anlb LATE.
Check auf Bestandskonto bei Gruppensummen erst hier, wegen
fehlender Abgänge/Umbuchungen
IF NOT summb IS INITIAL.
IF NOT anlav-ktansw IN so_ktanw.
REJECT 'ANLAV'.
ENDIF.
ENDIF.
ANLCV aus Save-Area zurueckholen.
CHECK NOT sav_anlcv-anln1 IS INITIAL.
MOVE sav_anlcv TO anlcv.
Abg-Simu: Abgang simulieren.
PERFORM abga_simulieren.
Promise to reward points
Regards
Mac

1) delete line CHECK anepv-bzdat ge sav_gjbeg.
2) test with an asset , which has movements (purchases) in your intervall so_bzdat.
otherwise post a movement (e.g. transaction type 100) with tcode abzon
A.

A strang problem about Resin database connection pool

I am a beginner，hope somebody can help me.
my web site occured a strange problem after I used the Resin database connection pool instead of
connecting directly
the error message as follows:java.lang.IllegalArgumentException: Request cannot be null
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at _jsp._intro__jsp._jspService(/intro.jsp:60)
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at com.caucho.server.dispatch.PageFilterChain.doFilter(PageFilterChain.java:155)
at com.caucho.server.cache.CacheFilterChain.doFilter(CacheFilterChain.java:211)
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at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:221)
at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:263)
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at com.caucho.util.ThreadPool.runTasks(ThreadPool.java:464)
at com.caucho.util.ThreadPool.run(ThreadPool.java:408)
at java.lang.Thread.run(Thread.java:595)


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xmlns:resin="http://caucho.com/ns/resin/core">

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timestamp='[%H:%M:%S.%s] '/>
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timestamp='[%H:%M:%S.%s] '/>

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<thread-pool>

<thread-max>128</thread-max>

<spare-thread-min>25</spare-thread-min>
</thread-pool>

<min-free-memory>1M</min-free-memory>
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<keepalive-timeout>120s</keepalive-timeout>

<http server-id="" host="*" port="8080"/>


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<srun server-id="" host="127.0.0.1" port="6802" index="1"/>
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<ignore-client-disconnect>true</ignore-client-disconnect>

<cache path="cache" memory-size="10M"/>

<ping>

</ping>

<web-app-default>

<cache-mapping url-pattern="/" expires="5s"/>
<cache-mapping url-pattern="*.gif" expires="60s"/>
<cache-mapping url-pattern="*.jpg" expires="60s"/>

<servlet servlet-name="directory"
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<jndi-name>jdbc/artunion</jndi-name>
<driver type="org.gjt.mm.mysql.Driver">
<url>jdbc:mysql://localhost:3306/union</url>
<user>as</user>
<password>as</password>
</driver>
<prepared-statement-cache-size>8</prepared-statement-cache-size>
<max-connections>20</max-connections>
<max-idle-time>30s</max-idle-time>
</database>

<host-default>
<class-loader>
<compiling-loader path='webapps/WEB-INF/classes'/>
<library-loader path='webapps/WEB-INF/lib'/>
</class-loader>

<access-log path='logs/access.log'
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<web-app-deploy path='webapps'/>

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<ear-default>

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<resource-deploy path='deploy'/>

<web-app-deploy path='deploy'/>
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<document-directory>D:/artunion</document-directory>

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<class-loader>
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Thank you!

Selection screen in Logical Database programming

In my Executable program,i have used 'GET PERNR' .
but i don't need the standrd selection screen as such.I want to modify the std selection screen . Instead of allowing user to select the PERNR's , i want to set their PERNR's by default .
Advance Thanks .
J

You have write this in your INITIALIZATION and AT SELECTION-SCREEN OUTPUT events.
In your INITIALIZATION event, default the PERNR to the PERNR of the employee who is running it.
In the AT SELECTION-SCREEN OUTPUT, add the code to make it display only as follows.
LOOP AT SCREEN.
IF SCREEN-NAME = PERNR.
SCREEN-INPUT =0.
MODIFY SCREEN.
ENDIF.
ENDLOOP.
Srinivas

Problem with logical database

Hello experts,
i want to mix the data of the two transactions CjI3 CjI5 into one table. Both Transactions or programs use LDB psj. So i want to use one perform for each LDB call. I want to call the LDB with the FM LDB_PROCESS.
I want to get the data of the actual project costs with the code below.
DATA: lt_callback TYPE TABLE OF ldbcb,
        ls_callback LIKE LINE OF lt_callback.
DATA: lt_seltab TYPE TABLE OF rsparams,
        ls_seltab LIKE LINE OF lt_seltab.
DATA: lt_select_fields   TYPE rsfs_fields.
CALL FUNCTION 'CJDB_FREE_MEMORY_LDB_PSJ'.
gd_kokrs = 'URNC'.
* init event
SET PARAMETER ID 'CAC' FIELD 'URNC'.
* define nodes for ldb call
ls_callback-ldbnode     = 'PROJ'.
ls_callback-get         = 'X'.
* ls_callback-get_late    = 'X'.
ls_callback-cb_prog     = sy-repid.
ls_callback-cb_form     = 'CALLBACK_PROJ_ACT'.
append ls_callback to lt_callback.
clear ls_callback.
ls_callback-ldbnode     = 'VBAP'.
ls_callback-get         = 'X'.
* ls_callback-get_late    = 'X'.
ls_callback-cb_prog     = sy-repid.
ls_callback-cb_form     = 'CALLBACK_VBAP_ACT'.
append ls_callback to lt_callback.
...defining the other callback forms
* set selcrit
CLEAR ls_seltab.
ls_seltab-SELNAME = 'CN_AKTDT'.
ls_seltab-KIND = 'P'.
ls_seltab-LOW = 'X'.
APPEND ls_seltab to lt_seltab.
CLEAR ls_seltab.
ls_seltab-SELNAME = 'CN_AMODI'.
ls_seltab-KIND = 'P'.
ls_seltab-LOW = 'X'.
APPEND ls_seltab to lt_seltab.
* other selcrits
* fill table for field selection
PERFORM f01_fill_select_fields TABLES lt_select_fields.
flg_no_stop_info = con_on.
* flg_psj_no_gen = con_on.
* cn_corep = con_on.
psj_handle_tcndb = 3000.
* set tcode (direct for batch processing)
gd_tcode = 'CJI3'.
* save repid for selection
gd_repid_save = sy-repid.
* set tcode (direct for batch processing)
gd_tcode = 'CJI3'.
* flag aus start of selection
*   flg_no_database = con_on.
* For DB Profiles
DATA: ls_tcndb TYPE tcndb,
      ls_tcnds TYPE tcnds.
Select SINGLE * from tcndb
into ls_tcndb
WHERE PROFID = 'URENCO_PS001'.
IF sy-subrc = 0.
   EXPORT CN_TCNDB FROM LS_TCNDB
      TO MEMORY ID 'SAPDBPSJ_CN_TCNDB'.
   TCNDB = LS_TCNDB.
ENDIF.
Select SINGLE * from tcnds
into ls_tcnds
WHERE DB_VIEW = '000000000001'.
IF sy-subrc = 0.
   EXPORT CN_TCNDS FROM LS_TCNDS
      TO MEMORY ID 'SAPDBPSJ_CN_TCNDB'.
   TCNDS = LS_TCNDS.
ENDIF.
psj_caller = sy-repid.
CALL FUNCTION 'LDB_PROCESS'
    EXPORTING
      LDBNAME                           = 'PSJ'
*     VARIANT                           =
*     EXPRESSIONS                       =
    FIELD_SELECTION                   = lt_select_fields
*     DYN_NODE_TYPES                    =
    TABLES
      CALLBACK                          = lt_callback
     SELECTIONS                        = lt_seltab
   EXCEPTIONS
     LDB_NOT_REENTRANT                 = 1
But only the project table is filled. But i also need the nodes
proj
vbap
PRPS_R
AUFK
ACT01
PSMERK
PSMERK_PRPS
PSMERK_ACT
But i didnt get some data in it. I don know why.
The table gt_proj is filled in the call back form. But not the other tables???
Can anybody help.
If you need more information say it.
Edited by: christopher Pollok on Jun 20, 2011 4:20 PM

Solved

Problem about loading server program to server

Hey Experts,
I'm facing an unexpected problem. I'm Using netbeans 6.1, JasperReport 3.7.0, iReport3.5.1 for creating a report.
I've successfully created a report using servlet. And after that I create a new report for another report. In this case,
netbeans shows me errors like:
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Problem with Logical Database - Get stmt

Hi,
   There is a standard LDB which is used in custom developed report.
GET A
GET B
When there is no record fetched from B table, it moves to end-of-selection and finishes the report execution. But in some cases I dont want this to happen. Only GET A needs to be executed. It need not do a GET B statement, since there is no corresponding record in B table.
If some condition.
    GET A.
else.
    GET A.
    GET B.
endif,
But this is not posiible., since it cant be binded by If stmts.
Please let me know how can this be achieved.
Thanks

Thats fine. But I dont want the GET B to get executed. Since there is no record in tht table for tht condition.
Get B -> Fetch wil return no record. So it goes to end-of-selection and completed report processing. But in my case it shouldnt happen. It should proceed further down in processing the report. So only i thought
If some condition.
Get B
endif.
So when there is no record case, Get B will not be executed. Binding by if is not possible.
So please let me know how to proceed

Steps to create LOGICAL DATABASE in sap

hi guys,
i have gone through many documents about LDB. But, i didnt get the steps to create a LDB.
plz provide me with the steps to be followed to create a LDB.
thnx,
shivaa.

Hi Shiva,
This might help you!
Logical database structures
There are three defining entities in an SAP logical database. You must be clear on all three in order to create and use one.
Table structure: Your logical database includes data from specified tables in SAP. There is a hierarchy among these tables defined by their foreign keys (all known to SAP), and you are going to define a customized relationship between select tables. This structure is unique and must be defined and saved.
Data selection: You may not want or need every item in the referenced tables that contributes to your customized database. There is a selection screen that permits you to pick and choose.
Database access programming: Once youu2019ve defined your logical database, SAP will generate the access subroutines needed to pull the data in the way you want it pulled.
Creating your own logical database
ABAP/4 (Advanced Business Application Programming language, version 4) is the language created by SAP for implementation and customization of its R/3 system. ABAP/4 comes loaded with many predefined logical databases that can construct and table just about any conventional business objects you might need in any canned SAP application. However, you can also create your own logical databases to construct any custom objects you care to define, as your application requires in ABAP/4. Hereu2019s a step-by-step guide:
1. Call up transaction SLDB (or transaction SE36). The path you want is Tools | ABAP Workbench | Development | Programming Environment | Logical Databases. This screen is called Logical Database Builder.
2. Enter an appropriate name in the logical database name field. You have three options on this screen: Create, Display, and Change. Choose Create.
3. Youu2019ll be prompted for a short text description of your new logical database. Enter one. Youu2019ll then be prompted to specify a development class.
4. Now comes the fun part! You must specify a root node, or a parent table, as the basis of your logical database structure. You can now place subsequent tables under the root table as needed to assemble the data object you want. You can access this tree from this point forward, to add additional tables, by selecting that root node and following the path Edit | Node | Create. Once youu2019ve saved the structure you define in this step, the system will generate the programming necessary to access your logical database. The best part is you donu2019t have to write a single line of code.
Watch out!
The use of very large tables will degrade the performance of a logical database, so be aware of that trade-off. Remember that some tables in SAP are very complex, so they will be problematic in any user-defined logical database.
Declaring a logical database
Hereu2019s another surprising feature of logical databases: You do not assign them in your ABAP/4 Code. Instead, the system requires that you specify logical databases as attributes. So when you are creating a report, have your logical database identifier (the name you gave it) on hand when you are defining its attributes on the Program Attributes screen. The Attributes section of the screen (the lower half) will include a Logical database field, where you can declare your logical database.
Logical databases for increasing efficiency
Why else would you want to create a logical database? Consider that the logical databases already available to you begin with a root node and proceed downward from there. If the data object you wish to construct consists of items that are all below the root node, you can use an existing logical database program to extract the data, then trim away what you donu2019t want using SELECT statementsu2014or you can increase the speed of the logical database program considerably by redefining the logical database for your object and starting with a table down in the chain. Either way, youu2019ll eliminate a great deal of overhead.
Reward if useful.
Thankyou,
Regards.

Problem about logical database programming

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