Abap HR .Call funaction for RT tables

Hi All
i have one problem in abap-Hr reporting..
I call function CD_READ_RGDIR
and then for payroll results.
PYXX_READ_PAYROLL_RESULT
it works in the dev. Server. but in the other, same client these functional are not accessible...means returns no value..
Thankx in Advanced..
Lakhan

Hi,
You should assign LDB name in Attributes screen.
In program, Goto--->attributes-->Give Logical node value 'PERNR' in LDB selection--
>select LDB name then save..
Regards,
Maha

Similar Messages

Regarding 'FREE' ABAP Keyword in the local internal table

Hi Experts,
//sorry for my english ;(
Our ABAP Development leader forced us to use FREE ABAP Keyword on Local internal table like below situation.
and I really don't get it.
-below-
FORM GET_DATA.
DATA: LT_ITAB TYPE TABLE OF SFLIGHT.
SELECT * FROM ZTABLE INTO TABLE LT_TABLE
        FOR ALL ENTRIES IN LT_ITAB
    WHERE KKEY = LT_ITAB-CARRID.
"// WHY DO I HAVE TO USE THIS CODE
    FREE LT_ITAB.
ENDFORM.
I know that GC(garbage collector) will release memory area of LT_ITAB.
but why do i have to release directly FREE LT_ITAB memory area?
cause to take in short time memory advantage of before GC calling?
thanks.

Guys, why don't you read ABAP help?
From ABAP help about FREE:
For internal tables, FREE has the same effect as the REFRESH statement, though the entire memory area occupied by the table rows is released, and the initial memory area remains unoccupied
About REFRESH:
This statement sets an internal table itab to its initial value, meaning that it deletes all rows of the internal table. The memory space required for the table is freed up to the initial memory size INITIAL SIZE. For itab, you must specify an internal table.
To delete all rows and free the entire memory space occupied by rows, you can use the statement FREE.
About INITAIL SIZE:
After the optional addition INITIAL SIZE, you can specify a number of rows n as a numeric literal or numeric constant to adjust the size of the first block in the memory that is reserved by the system for an internal table of the table type. Without this addition, if the number 0 is entered, or the value of n exceeds a maximum value, the system automatically allocates an appropriate memory area.
To summarize:
Using free allows you to immediately free the initial space reserved by the kernel for an internal table.
I am lazy to look for it, but I don't think it ever exceeds few Kb.
regards,
Yuri

Combine standard task (ABAP method call) and additional UWL Action Handlers

Hi, i have defined a task with an asynchronous ABAP method call and a terminating event which i want to use "as is" in the universal worklist, that means that the standard action has to be the ABAP method call defined for the task.
In addition to that i want to add an extra button to the workitem view in the worklist which opens a web dynpro application. The web dynpro needs a parameter from the workitem container. Opening the web dynpro is not required for completing the task, so i do not consider using secondary methods.
I created an UWLConfiguration for the task type without defining the defaultAction attribute, since defaultAction should not be overwritten. I wanted to use SAPWebDynproABAPLauncher to generate the button since i can easily include values from the workitem container in the call.
When executing a workitem from the worklist the ABAP method call is not performed, instead a window opens which just displays the workitem. The button to web dynpro is generated and works fine.
Does anyone have a clue how i can use UWL to define an additional button with SAPWebDynproABAPLauncher without overwriting the standard task definition?
My definition:
<ItemTypes>
 <ItemType
name="uwl.task.webflow.TS95100103"
connector="WebFlowConnector"
defaultView="DefaultView">
 <ItemTypeCriteria
systemId="ED1CLNT100"
externalType="TS95100103"
connector="WebFlowConnector"/>
 <CustomAttributes>
 <CustomAttributeSource
id="WEBFLOW_CONTAINER"
objectIdHolder="externalObjectId"
objectType="WebFlowContainer"
cacheValidity="final">
 <Attribute
name="HROBJECT_OBJEKTID"
type="string"
displayName="HROBJECT_OBJEKTID"/>
 </CustomAttributeSource>
 </CustomAttributes>
 <Actions>
 <Action
name="launchWebDynPro"
groupAction=""
handler="SAPWebDynproABAPLauncher"
returnToDetailViewAllowed="yes"
launchInNewWindow="yes"
launchNewWindowFeatures="resizable=yes,scrollbars=yes,
status=yes,toolbar=no,menubar=no,
location=no,directories=no">
 <Properties>
 <Property
name="WebDynproApplication" value="hr01_app"/>
 <Property
name="newWindowFeatures"
value="resizable=yes,scrollbars=yes,status=yes,
toolbar=no,menubar=no,location=no,directories=no"/>
 <Property
name="DynamicParameter"
value="candidacy_id=${item.HROBJECT_OBJEKTID}
&from_workflow=X"/>
 <Property
name="openInNewWindow" value="yes"/>
 <Property
name="System" value="SYSTEM_ALIAS_ERP"/>
 <Property
name="WebDynproNamespace" value="hr01"/>
 </Properties>
 <Descriptions default="Show"/>
 </Action>
 </Actions>
 </ItemType>
</ItemTypes>
Thank you very much, best regards, Martin
Edited by: Martin Sommer on Dec 1, 2008 5:51 PM

found a solution with transaction launcher and custom transaction

ABAP transformation to XML for sap chart engine with internal table

Hello.
I am new to the SAP chart engine, XML and transformations so please be patient with me from an ABAP-program I am trying to call a Z-transformation and attach an internal table with two columns. In the ST program I want to loop through the table and for each row insert the two values from the table in the XML.
In an ABAP-program I have an internal table containing datacoordinates for a scattered chart.
The table looks like this:
DATA: BEGIN OF coordinate,
 x_value TYPE f,
 y_value TYPE f,
 END OF coordinate,
 polygon_data LIKE STANDARD TABLE OF coordinate with header line.
As a prototype I just add a few coordinates like this:
polygon_data-x_value = '700'.
 polygon_data-y_value = '8'.
 APPEND polygon_data.
 polygon_data-x_value = '1400'.
 polygon_data-y_value = '3'.
 APPEND polygon_data.
 polygon_data-x_value = '1400'.
 polygon_data-y_value = '10'.
 APPEND polygon_data.
 polygon_data-x_value = '700'.
 polygon_data-y_value = '10'.
 APPEND polygon_data.
 polygon_data-x_value = '700'.
 polygon_data-y_value = '3'.
 APPEND polygon_data.
I have created a Z-transformation and I call it like this (I also have a separate transformation for all the customizing generated with SAP chart designer but that one works fine):
DATA: data_xml TYPE xstring.
CALL TRANSFORMATION ztest_ce_tables2xml
 SOURCE polygon_data = polygon_data
 RESULT XML data_xml.
Since I am trying to create a scattered chart I need to insert an X and Y value for each coordinate.In the manual SAP Chart engine - XML format description it looks like this:
<ChartData>
<Series>
<Point>
<Value type="x">1</Value>
<Value type="y">1</Value>
</Point>
<Point>
<Value type="x">2</Value>
<Value type="y">2</Value>
</Point>
My ST-program that I cannot get to work looks like below. How can I loop through my internal table and get the X and thy Y value for each row in my internal table?
BR Tommy (Sweden)
<?sap.transform simple?>
<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">
<tt:root name="POLYGON_DATA"/>
<tt:template>
<ChartData>
<Series>
<tt:loop ref=".POLYGON_DATA">
 <Point>
 <Value type="x"><tt:copy ref=".POLYGON_DATA.X_VALUE"/></Value>
 <Value type="y"><tt:copy ref=".POLYGON_DATA.Y_VALUE"/></Value>
 </Point>
 </tt:loop>
</Series>
</ChartData>
</tt:template>
</tt:transform>

Hello again.
I found the solution and would like to share it with the forum, maybe it could help someone.
My first error was in the call transformation statement:
CALL TRANSFORMATION ztest_ce_tables2xml
 SOURCE polygon_data = polygon_data [] <----
Do not forget these
 RESULT XML data_xml.
I also had an error in the ST program, it should look like this:
<?sap.transform simple?>
<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">
<tt:root name="POLYGON_DATA"/>
<tt:template>
<ChartData>
<Series>
<tt:loop ref=".POLYGON_DATA">
 <Point>
 <Value type="x"><tt:value ref="$ref.X_VALUE"/></Value>
 <Value type="y"><tt:value ref="$ref.Y_VALUE"/></Value>
 </Point>
 </tt:loop>
</Series>
</ChartData>
</tt:template>
</tt:transform>

ABAP for Super Dumps: Import- & Export-Parameter for a Table in a FM

Hello ABAP Profs,
sorry I am BW.
Import- & Export-Parameter for a Table in and out of an Function Modul.
I want to import a table into a Function Module, change it and export it again.
How do I have to define the Import- and Export- Parameters in the FM ?
The table looks looks this:
DATA: zvpshub_tab TYPE SORTED TABLE OF /bic/pzvpshub WITH UNIQUE KEY
/bic/zvpshub objvers /bic/zvpsoursy INITIAL SIZE 0.
Thanks a lot
Martin Sautter

Hi Clemens,
in SE11 I defined a datatype of Type Structure: ZVPSHUB_ROW.
in SE11 I defiend a datatype of Type Tabletype: ZVPSHUB_TAB,
bases on Rowtype ZVPSHUB_ROW.
in SE 80 I creates an FM with a CHANGEING Parameter referencing ZVPSHUB_TAB:
FUNCTION ZVP_SHUB_TAB_LOAD.
""Lokale Schnittstelle:
*" CHANGING
*" VALUE(SHUB_TAB) TYPE ZVPSHUB_TAB
in RSA1 in BW in the Startroutine of the Upload Rules in defined the table:
DATA:shub_tab TYPE zvpshub_tab.
in RSA1 in BW in the Startroutine of the Upload Rules in defined the table:
DATA:shub_tab TYPE zvpshub_tab.
in RSA1 in BW in the Startroutine i called the FM
CALL FUNCTION 'ZVP_SHUB_TAB_LOAD'
 CHANGING
 shub_tab = shub_tab.
and it works ..
Thank You
Martin Sautter

How to call webservice for each record in a table using ODI

Hi
I am new to ODI and Webservice. I want to invoke a scenario in ODI using web service. I hava a weblogic application server with axis 2 deployed.
But I want call webservice for each record in a table
For eg: "EMP" table have 50 records, for each record web service should invoke
Can any one help me on it.
Thanks,
phani
Edited by: user12774166 on Jun 6, 2010 11:16 PM

If your goal is "call" a web service, Jason's Straub's [flex-ws-api|https://flex-ws-api.samplecode.oracle.com/] is by far the best I've seen. You might want read more about it on [his blog|http://jastraub.blogspot.com/search?q=+flex_ws_api+].
Tyler Muth
http://tylermuth.wordpress.com
[Applied Oracle Security: Developing Secure Database and Middleware Environments|http://sn.im/aos.book]

ABAP table for "Condition table"

Dears,
Could you please tell the ABAP table for Condition table.
My requirement is : I need to check a field e.g. KUNNR, in which all the condition tables KUNNR is been used.
Thanks
pinky

Hi,
Use t.code se16n, and then provide the sales order number for vbak,
or vbap take value of field KNUMV (The internal number under which
the system saves conditions that apply to a sales order header),
KNUMH (The internal number under which the system saves conditions
that apply to a sales orde itemr), and go to KONV (for vbak) and KONP
(for vbap) enter this KNUMV or KNUMH number and execute , you will get
all item pricing conditions for that sales order.
For pricing record :- table KONH - Condition (Header)
table KONP - Condition (Item)
with field KNUMH - Condition record number.
hope this will help.
regards
Vivek.

Data area for accessing table is too small., error key: RFC_ERROR_SYSTEM_FA

Hi all,
I build a java applicatio to call a sap function.
This FM have only an import parameter as structure, the last field of this structure is 16000 characters long.
When I start the application if the long field is empty all works fine, but if I fill it the java compiler send me this runtime error:
[code]
Exception in thread "main" com.sap.aii.proxy.framework.core.BaseProxyException:
Data area for accessing table is too small.,
error key: RFC_ERROR_SYSTEM_FAILURE
     at com.sap.aii.proxy.framework.core.AbstractProxy.send$(AbstractProxy.java:150)
     at bi9032.BI_9032_PortType.zhr_Bi_9032(BI_9032_PortType.java:16)
     at bi9032.Startapp.main(Startapp.java:50)
[/code]
Any one can me explain the problem?
It's possible that I can't pass a large data quantity?
thanks and regards,
enzo
Message was edited by: Enzo Porcasi

I understood that it's a sap problem,
so I will write in the abap forum,
bye
enzo

Error messages in ABAP program are stored in which table

hi all,
Can anyone tell
error messages in ABAP program are stored in which table??

Hi Sir ,
Please have a look below .Hope it is suitable and simpler solution for your question.
Please do reward if useful.
Thankx.
Fuction module for storing error messages ->'format_message'
for example...
data : v_message(100) type c.
call transaction NNNN mode A update S messages into it_messages.
loop at it_messages where msgty = 'E'.
call function 'format_message'
exporting
*it_messages details
importing
v_message.
write :/ v_message.
clear v_message.
endloop.
Anothe method - ->
Here is a sample of the program code for that:
LOOP AT it_messtab.
CALL FUNCTION 'FORMAT_MESSAGE'
EXPORTING
id = it_messtab-msgid
lang = it_messtab-msgspra
no = it_messtab-msgnr
v1 = it_messtab-msgv1
v2 = it_messtab-msgv2
IMPORTING
msg = g_msg
EXCEPTIONS
OTHERS = 0.
IF it_messtab-msgtyp = 'S'.
it_sucess-sucess_rec = g_msg.
it_sucess-lifnr = it_header-lifnr." Based on your field
it_sucess-tabix = v_lines.
APPEND it_sucess.
ELSEIF it_messtab-msgtyp = 'E'.
it_error-error_rec = g_msg.
it_error-lifnr = it_header-lifnr.
it_error-tabix = v_lines.
APPEND it_error.
ELSE.
it_info-info_rec = g_msg.
it_info-lifnr = it_header-lifnr.
it_info-tabix = v_lines.
APPEND it_info.
ENDIF.
ENDLOOP.

Creating checktable for custom table field

Hello Guys,
Can anybody explain me steps involved in createing a check table for the field in
ztable.if possible can u send me link with screen shots.
your help will be greatly appreciated.
Regards
Janapathi

Check table
check table and value table
For example you have Employee master table & Employee Transaction table.
When ever an employee Transacts we need to check whether that employee exists , so we can refer to the employee master table.
This is nothing but a Parent & Child relationship . Here data can be maintained at client level , no development involved.
As per DBMS what we call foregin key table, is called as check table in SAP.
1. The contents of the check will be used as an input help(F4 Help) for a particular field on which a check table is assigned.
But the contents of Value Table are never used in Input Help.
The Heirarchy which decides from where to used the Input Help is:
1. Input help defined explicitly in ABAP Program or Dialog Module.
2. Input Help Attached to the referenced Database Table field.
3. Using the contents of Check Table as an input help if neither (1) or (2) help are there.
4. Input help from Fixed value or Value range given in Domain.
Check Table: The ABAP Dictionary allows you to define relationships between tables using foreign keys . A dependent table is called a foreign key table, and the referenced table is called the check table. Each key field of the check table corresponds to a field in the foreign key table. These fields are called foreign key fields. One of the foreign key fields is designated as the check field for checking the validity of values. The key fields of the check table can serve as input help for the check field.
Value Table: Prior to Release 4.0, it was possible to use the value table of a domain to provide input help. This is no longer possible, primarily because unexpected results could occur if the value table had more than one key field. It was not possible to restrict the other key fields, which meant that the environment of the field was not considered, as is normal with check tables.
In cases where this kind of value help was appropriate, you can reconstruct it by creating a search help for the data elements that use the domain in question, and using the value table as the selection method.
Check table will be at field level checking.
Value table will be at domain level checking ex: scarr table is check table for carrid.
also refer
http://help.sap.com/saphelp_nw2004s/helpdata/en/e2/667092730811d2959500a0c929b3c3/content.htm
http://www.abapmaster.com/cgi-bin/SAP-ABAP-interview-questions.cgi
Re: check table and Value table

How to find changes done for a table

Hi All,
We have a customized trasparent table , for which table log is not maintained. There is a change in data for this table and we want to find out who has done the changes and when .
We are using SAP R/3 4.6c with Oracle 8.1.7
Please let us know if there is any way to sort this out .
Regards,
BN

Hello Nayak,
as you told us that it is a customizing table .. there should not be many changes.
If you don't activate the table log ... then you can only go over the logminer of oracle (it is much easier, if you know a timeframe in which the data maybe changed):
http://www.oracle-base.com/articles/8i/LogMiner.php
http://download.oracle.com/docs/cd/B19306_01/server.102/b14237/dynviews_1154.htm#i1408263
=> TIMESTAMP
=> TABLE_NAME
=> SESSION_INFO
=> SQL_REDO
=> SQL_UNDO
You will not see which user has done the change but you will find the abap program and with that information you can go to ST03n and have a look which user called this program.
Regards
Stefan

Enter values for the table

Hello ABAP Experts,
I have a z table. I can enter the values in Dev using sm30. I have just transported the table to QA. when i am trying to use the sm30 in QA it is giving this message:
'The maintenance dialog for zbudget_dir is incomplete orr not defined. message no. sv037
diagnosis:
the called function with the view/ table zbudget_dir needs a special maintenance dialog which, however, eithter dies not exist at all, or does not exist complemetly.
procedure:
generate the required maintenance dialague.'
please suggest how to fix this problem.
Thanks,
BWer

There is an associated set of objects that runs the maintenance dialog of any table. This has not been transported.
You will have to assign a dev class (maybe it was $TMP in dev hence not transported) to the table maintenance components and transport it.
In SE11, go to utilities->table maintenance generator and follow from there to create afresh, or,
SE54> specify table name and try utilities>total transport.

BDC for updating table like zstudent

Hi Every One ,
How i write the BDC for updating table.
I'm explaining my scenario , there is a table zstudent - it contains few fields like sno , sname , address. Previously student no.(sno's) like 1,2,3,4,5,6,7,8.... now i'want 1hyd,2hyd,3hyd,4hyd,5hyd,6hyd,.......... like this , and sno is not a primary key remaining all fields are same .
let me inform me , which transaction i use in call transaction.
Please revert me.
Regards,
Krishna

Hello,
Since you have a custom table, you can use all the Open SQL statements available in ABAP
[Open SQL |http://help.sap.com/saphelp_470/helpdata/en/fc/eb3969358411d1829f0000e829fbfe/content.htm]
BDC's are generally used when you wanna update SAP Tables, as we do not know, which all tables will be updated in SAP.
You may use the SHDB tcode, to record a BDC for an tcode: standard or custom
Regards,
Abhishek

To get Lock object for Standard Table

Hi all,
i want to update table FKK_GPSHAD,so i need corresponding lock object for this table.can any one sughgest me the solution for this.
Thanks in advance,...

Hi,
Lock objects are use in SAP to avoid the inconsistancy at the time of data is being insert/change into database.
SAP Provide three type of Lock objects.
Read Lock(Shared Locked)
protects read access to an object. The read lock allows other transactions read access but not write access to
the locked area of the table
Write Lock(exclusive lock)
protects write access to an object. The write lock allows other transactions neither read nor write access to
the locked area of the table.
Enhanced write lock (exclusive lock without cumulating)
works like a write lock except that the enhanced write lock also protects from further accesses from the
same transaction.
You can create a lock on a object of SAP thorugh transaction SE11 and enter any meaningful name start with EZ Example EZTEST_LOCK.
Use: you can see in almost all transaction when you are open an object in Change mode SAP could not allow to any other user to open the same object in change mode.
Example: in HR when we are enter a personal number in master data maintainance screen SAP can't allow to any other user to use same personal number for changes.
Technicaly:
When you create a lock object System automatically creat two function module.
1. ENQUEUE_<Lockobject name>. to insert the object in a queue.
2. DEQUEUE_<Lockobject name>. To remove the object is being queued through above FM.
You have to use these function module in your program.
check this link for example.
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
tables:vbak.
call function 'ENQUEUE_EZLOCK3'
exporting
mode_vbak = 'E'
mandt = sy-mandt
vbeln = vbak-vbeln
X_VBELN = ' '
_SCOPE = '2'
_WAIT = ' '
_COLLECT = ' '
EXCEPTIONS
FOREIGN_LOCK = 1
SYSTEM_FAILURE = 2
OTHERS = 3
if sy-subrc 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
endif.
Normally ABAPers will create the Lock objects, because we know when to lock and how to lock and where to lock the Object then after completing our updations we unlock the Objects in the Tables
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
purpose: If multiple user try to access a database object, inconsistency may occer. To avoid that inconsistency and to let multiple user give the accessibility of the database objects the locking mechanism is used.
Steps: first we create a loc object in se11 . Suppose for a table mara. It will create two functional module.:
1. enque_lockobject
1. deque_lockobject
before updating any table first we lock the table by calling enque_lockobject fm and then after updating we release the lock by deque_lockobject.
http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
GO TO SE11
Select the radio button "Lock object"..
Give the name starts with EZ or EY..
Example: EYTEST
Press Create button..
Give the short description..
Example: Lock object for table ZTABLE..
In the tables tab..Give the table name..
Example: ZTABLE
Save and generate..
Your lock object is now created..You can see the LOCK MODULES..
In the menu ..GOTO -> LOCK MODULES..There you can see the ENQUEUE and DEQUEUE function
Lock objects:
http://www.sap-img.com/abap/type-and-uses-of-lock-objects-in-sap.htm
http://help.sap.com/saphelp_nw04s/helpdata/en/cf/21eea5446011d189700000e8322d00/content.htm
Match Code Objects:
http://help.sap.com/saphelp_nw2004s/helpdata/en/41/f6b237fec48c67e10000009b38f8cf/content.htm
http://searchsap.techtarget.com/tip/0,289483,sid21_gci553386,00.html
See this link:
http://www.sap-img.com/abap/type-and-uses-of-lock-objects-in-sap.htm
Check these links -
lock objects
Lock Objects
Lock Objects
Please reward points if useful.
Regards
Rose

Creating view to get first row for each table !!

I am having tables(more than 10) which are related using foreign key and primary key relationship.
Example:
Table1:
T1Prim T1Col1 T1Col2
Table2
T2For T2Prim T2Col1 T2Col2 T2Col3
(here T2For will have value same as T1Prim and in my design it has same column name i.e. T1Prim)
Table3
T3For T3Prim T3Col1 T3Col2 T3Col3
(here T3For will have value same as T2Prim)
and so on.
The data in the tables is like For table1 there will be one record, for table2 there will be one record and for table 3 there are more than one records.
Can i view either the first record for each of them or all records from each of them by writing the following view.
I have written a view like this:
Create or replace view test (T1Prim,T1Col1, T1Col2,T2Prim,T2Col1 T2Col2, T2Col3, T3Prim,T3Col1, T3Col2, T3Col3)
As
Select
Table1.T1Prim,
Table1.T1Col1,
Table1.T1Col2,
Table2.T2Prim,
Table2.T2Col1,
Table2.T2Col2,
Table2.T2Col3,
Table3.T3Prim,
Table3.T3Col1,
Table3.T3Col2,
Table3.T3Col3
From
Table1,
Table2,
Table3
where
Table1.Prim = Table2.For
and Table2.Prim = Table3.For
When i ran the select statement on the view I am not getting any data. Whereas there is data when select is ran on individual table.
Can someone please tell me where i am goofing.
Thanks in the anticipation that i will get some hint to solve this.
Eagerly waiting for reply.
Thanks !!

I mean use a collection :
Collection Methods
A collection method is a built-in function or procedure that operates on collections and is called using dot notation. The methods EXISTS, COUNT, LIMIT, FIRST, LAST, PRIOR, NEXT, EXTEND, TRIM, and DELETE help generalize code, make collections easier to use, and make your applications easier to maintain.
EXISTS, COUNT, LIMIT, FIRST, LAST, PRIOR, and NEXT are functions, which appear as part of an expression. EXTEND, TRIM, and DELETE are procedures, which appear as a statement. EXISTS, PRIOR, NEXT, TRIM, EXTEND, and DELETE take integer parameters. EXISTS, PRIOR, NEXT, and DELETE can also take VARCHAR2 parameters for associative arrays with string keys. EXTEND and TRIM cannot be used with index-by tables.
For more information, see "Using Collection Methods".
Syntax
Text description of the illustration collection_method_call.gif
Keyword and Parameter Description
collection_name
This identifies an index-by table, nested table, or varray previously declared within the current scope.
COUNT
COUNT returns the number of elements that a collection currently contains, which is useful because the current size of a collection is not always known. You can use COUNT wherever an integer expression is allowed.
For varrays, COUNT always equals LAST. For nested tables, normally, COUNT equals LAST. But, if you delete elements from the middle of a nested table, COUNT is smaller than LAST.
DELETE
This procedure has three forms. DELETE removes all elements from a collection. DELETE(n) removes the nth element from an index-by table or nested table. If n is null, DELETE(n) does nothing. DELETE(m,n) removes all elements in the range m..n from an index-by table or nested table. If m is larger than n or if m or n is null, DELETE(m,n) does nothing.
EXISTS
EXISTS(n) returns TRUE if the nth element in a collection exists. Otherwise, EXISTS(n) returns FALSE. Mainly, you use EXISTS with DELETE to maintain sparse nested tables. You can also use EXISTS to avoid raising an exception when you reference a nonexistent element. When passed an out-of-range subscript, EXISTS returns FALSE instead of raising SUBSCRIPT_OUTSIDE_LIMIT.
EXTEND
This procedure has three forms. EXTEND appends one null element to a collection. EXTEND(n) appends n null elements to a collection. EXTEND(n,i) appends n copies of the ith element to a collection. EXTEND operates on the internal size of a collection. So, if EXTEND encounters deleted elements, it includes them in its tally. You cannot use EXTEND with index-by tables.
FIRST, LAST
FIRST and LAST return the first and last (smallest and largest) subscript values in a collection. The subscript values are usually integers, but can also be strings for associative arrays. If the collection is empty, FIRST and LAST return NULL. If the collection contains only one element, FIRST and LAST return the same subscript value.
For varrays, FIRST always returns 1 and LAST always equals COUNT. For nested tables, normally, LAST equals COUNT. But, if you delete elements from the middle of a nested table, LAST is larger than COUNT.
index
This is an expression that must yield (or convert implicitly to) an integer in most cases, or a string for an associative array declared with string keys.
LIMIT
For nested tables, which have no maximum size, LIMIT returns NULL. For varrays, LIMIT returns the maximum number of elements that a varray can contain (which you must specify in its type definition).
NEXT, PRIOR
PRIOR(n) returns the subscript that precedes index n in a collection. NEXT(n) returns the subscript that succeeds index n. If n has no predecessor, PRIOR(n) returns NULL. Likewise, if n has no successor, NEXT(n) returns NULL.
TRIM
This procedure has two forms. TRIM removes one element from the end of a collection. TRIM(n) removes n elements from the end of a collection. If n is greater than COUNT, TRIM(n) raises SUBSCRIPT_BEYOND_COUNT. You cannot use TRIM with index-by tables.
TRIM operates on the internal size of a collection. So, if TRIM encounters deleted elements, it includes them in its tally.
Usage Notes
You cannot use collection methods in a SQL statement. If you try, you get a compilation error.
Only EXISTS can be applied to atomically null collections. If you apply another method to such collections, PL/SQL raises COLLECTION_IS_NULL.
You can use PRIOR or NEXT to traverse collections indexed by any series of subscripts. For example, you can use PRIOR or NEXT to traverse a nested table from which some elements have been deleted.
EXTEND operates on the internal size of a collection, which includes deleted elements. You cannot use EXTEND to initialize an atomically null collection. Also, if you impose the NOT NULL constraint on a TABLE or VARRAY type, you cannot apply the first two forms of EXTEND to collections of that type.
If an element to be deleted does not exist, DELETE simply skips it; no exception is raised. Varrays are dense, so you cannot delete their individual elements.
PL/SQL keeps placeholders for deleted elements. So, you can replace a deleted element simply by assigning it a new value. However, PL/SQL does not keep placeholders for trimmed elements.
The amount of memory allocated to a nested table can increase or decrease dynamically. As you delete elements, memory is freed page by page. If you delete the entire table, all the memory is freed.
In general, do not depend on the interaction between TRIM and DELETE. It is better to treat nested tables like fixed-size arrays and use only DELETE, or to treat them like stacks and use only TRIM and EXTEND.
Within a subprogram, a collection parameter assumes the properties of the argument bound to it. So, you can apply methods FIRST, LAST, COUNT, and so on to such parameters. For varray parameters, the value of LIMIT is always derived from the parameter type definition, regardless of the parameter mode.
Examples
In the following example, you use NEXT to traverse a nested table from which some elements have been deleted:
i := courses.FIRST; -- get subscript of first element
WHILE i IS NOT NULL LOOP
-- do something with courses(i)
i := courses.NEXT(i); -- get subscript of next element
END LOOP;
In the following example, PL/SQL executes the assignment statement only if element i exists:
IF courses.EXISTS(i) THEN
courses(i) := new_course;
END IF;
The next example shows that you can use FIRST and LAST to specify the lower and upper bounds of a loop range provided each element in that range exists:
FOR i IN courses.FIRST..courses.LAST LOOP ...
In the following example, you delete elements 2 through 5 from a nested table:
courses.DELETE(2, 5);
In the final example, you use LIMIT to determine if you can add 20 more elements to varray projects:
IF (projects.COUNT + 20) < projects.LIMIT THEN
-- add 20 more elements
Related Topics
Collections, Functions, Procedures
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96624/13_elems7.htm#33054
Joel P�rez

Abap HR .Call funaction for RT tables

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