Xquery update transaction (xqilla)
Hi,
it seems that when performing an xquery update such as 'insert node' that a transaction is allocated for this query, so that (using the Java API) there is no need to explicitly create a transaction - is this true?
If it is, then just using xquery gets rid of a transaction management problem and the try/finally.
thanks,
Norman
An updating query is auto-transacted if a transaction is not provided. However, auto-transacted methods still need to catch deadlock exceptions and retry.
John
Similar Messages
-
I see on the Wikipedia article for XQuery Update Facility, that XQilla, which BDBXML uses, implements the XQUF (not sure to which degree though). Can you utilize these commands in any XQuery, and does it require a special use of the API? Any documentation on your site? This looks like a very exciting language extension to have available.
thank you,
BrettBrett,
Thanks. This also means XmlModify will eventually disappear since it's no longer
necessary (and now implemented in terms of XQuery Update anyway). It's still around for
now.
As for security, we're considering one or both of:
1. bool XmlQueryExpression::isUpdateExpression() to allow the application
to ask the question and decide.
2. A flag (e.g. DBXML_NO_UPDATES) passed to the relevant execute() and query() functions. In Java it'd be a new configuration option in XmlDocumentConfig
Do you have a preference? I'm leaning toward (1) -- it's a slightly simpler change
and just as easy to use.
Regards,
George -
Decreasing performance when executing consecutive XQuery Update operations
hello,
I am writing an application in java using Berkeley DB XML (2.5.16). I have to run a test over the application, in which a lot of XQuery Update operations have to be executed. All update operations are insert statements. In the beginning the test works fine. However, as the number of updates increases (over 1000 XQuery Updates), there is also a great increase in time of execution. How can I enhance the performance of updates?
Note that:
1) The environment configuration is the following:
EnvironmentConfig envConfig = new EnvironmentConfig();
envConfig.setAllowCreate(true);
envConfig.setInitializeCache(true);
envConfig.setCacheSize(512*1024*1024);
envConfig.setInitializeLocking(false);
envConfig.setInitializeLogging(false);
envConfig.setTransactional(false);
2) No transactions are used
3) The container is a node container
4) Auto-indexing is on (I need that)
5) The container includes only one xml of 2,5MB size.
6) In some insert statements 1000 nodes are to be inserted.
7) I am running windows vista on a 4GB Ram pc.
Thank you in advance,
theoHi Lucas,
Thanks a lot for your reply! However, I have a few more questions.
Given that the xml is about 2.5MB size, is it considered to be that big for Berkeley DB so it needs to be break down into smaller documents?
Also, after having executed ~4000 xquery update insert operations and doubled xml’s size, the performance it’s really getting worse… An insertion may even take 1.5 min, when for each of the first 3000 insertions only less than 0.5 sec is needed… Is there something I am missing in the configuration of Berkeley DB? If I set autoindexing off and try to maintain fewer indexes, is it possible to see significantly better performance? Till now I am just getting the following error when I set my indexes and try to execute consequent insertions over the same node:
Exception in thread "main" com.sleepycat.dbxml.XmlException: Error: Sequence does not match type item() - the sequence does not contain items [err:XUDY0027], <query>:1:1, errcode = QUERY_EVALUATION_ERROR+
at com.sleepycat.dbxml.dbxml_javaJNI.XmlQueryExpression_execute__SWIG_1(Native Method)
at com.sleepycat.dbxml.XmlQueryExpression.execute(XmlQueryExpression.java:85)
+<myClasses>+
Thanks,
theo -
Updating transaction MD61 using information from inbound IDOC
Is there any standard IDOC type for Planned Independent Requirement(having fields of table PBED and PBIM in its segment)?If such an IDOC type doesnt exist then i have to go for custom idoc type creation
I have an inbound IDOC having 4 fields in its segment
1.SAP Material number
2.Plant
3.Plant Quantity
4.Requirement date
Now i have to use this information in IDOC to update transaction MD61(create a planned order).
constraints:
in MD61 screen1
SCREEN 1
Material radio button is defaulted to on. This must also be set in the interface. Material number will be valued from the input file.
Plant will be valued from the input file.
Version number defaults to 00, so that value should also be used for the interface.
Planning Horizon From and To dates will be the same date and valued from the input file.
Planning Period should be set to D for Day
SCREEN 2
Material number should default from SCREEN 1 input. The interface should also do this.
MRP Area will default from the Plant on SCREEN 1 input. The interface should also do this.
Version will default from the 00 on SCREEN1. If needed on interface, also default to 00.
Version Active checkbox will be checked by default.
Base Unit of Measure will default from material master.
Only a single date column will appear which should be the date input on SCREEN 1. Value this column with the quantity from the input file.
Input fields are highlighted in screenshots below.
After input is complete, use the SAVE icon to store the data.
Kindly tell me the approach to prepare this interface?Done,used BAPI_REQUIREMENTS_CREATE TO DO SO
-
How to update transaction data automatically into MySQL database using PI
Dear All,
With reference to subject matter I want a sincere advice regarding how to update transaction data automatically into MySQL database using PI. Is there any link available where I can get step-by-step process.
Ex: I have a MYSQL database in my organization. Whenever a delivery created in SAP some fields like DO Number, DO quantity, SO/STO number should get updated in MYSQL database automatically.
This scenario is related to updation of transactional data into MYSQL DB and I want your suggestions pertaining to same issue.
Thanks and Regards,
Chandra SekharHi .
Develop a sceanrio between SAP to Database system,When the data updates in SAP Tables read the data and update it in DATA Base using JDBC adapter,but there will be some delay in updating data in MySQL.
serach in sdn for IDOC-TOJDBC sceannario,many documents available for the same.
Regards,
Raja Sekhar -
Xml Validation & XQuery Update
Hello,
I have a question on xml validation in Berkeley DB XML (2.5.16).
I read in documentation that an xml can be validated against an xml DTD or Schema when is loaded into a container. However, when an XQuery Update is to be executed is there any configuration that allows checking if the XQuery Update leads to an xml that does not conform with the DTD/Schema? If so, how this case is managed? The XQuery is executed, or not? Is there any exception thrown?
I made a test over this: I wrote an xml (and a related DTD) where an element contains an id attribute and another element a referencing attribute to the aforementioned id. Then, an XQuery Update 'delete' expression deletes the element with the id attribute. The element is indeed deleted, the xml is left in an inconsistent state and I am allowed of making more update operations to this document...
I was wondering if there is any way of handling this case, except from being careful with what updates you choose, so that the xml is kept in a valid state. Is there something I am missing?
thank you in advance,
theoHello,
I believe that XQuery execution does not support DTD yet. I'll investigate further and let you know what else I can find.
Thanks,
Sandra -
Dear all,
I am looking for some database systems that use the W3C XQuery Update facility specification to modify their data.
To the best of my knowledge, no of well-known commercial database systems uses XQuery Update primitives.
For instance, Oracle 11g defines some SQL/XML update functions (combined with some XQuery expressions) to modify XML data stored within the database through the XMLType data type.
IBM DB2 9 uses SQL update statement to modify the whole XML document stored as an XML column and no update is proposed to modify parts of the document.
Are there some database systems providing XQuery-Update-Facility-based update of their data.
Thank you in advance.
Best regards.Were you aware of
[url http://www.liberidu.com/blog/2011/09/22/oracle-xmldb-xquery-update-in-database-release-11-2-0-3-0/]Oracle XMLDB XQuery Update in Database Release 11.2.0.3.0
Given it is new, expect a few bugs, such as
{thread:id=2355054}
If you have specific questions related to XQuery Update, the best place to ask them is over in the {forum:id=34} forum. -
Hi everybody,
Certainly my question will appear strange and even stupid , but I want to be sure to use the best syntax and also to be confirmed about some points.
In the document Oracle XML DB Best practices, we can find a lot of statements for modifying XML documents. In page 11 and 12 we have statements with and without XQuery syntax. What is exactly the best way ? Using insertchildxml, updatexml or the update statement with the XMLQuery clause ?
Why we use copy in these statement, but the keyword copy is not used in a XQuery expression.
I think copy is not specific to Oracle, is it used in XQuery language ?
In page 15, the SQL statement to modify XML document uses deletexml, not a XQuery update syntax.
I'm using Oracle 11G.
Thanks in advance for your explanationsuser4423142 wrote:
In the document Oracle XML DB Best practices, we can find a lot of statements for modifying XML documents. In page 11 and 12 we have statements with and without XQuery syntax. What is exactly the best way ? Using insertchildxml, updatexml or the update statement with the XMLQuery clause ?The recommended way is closely tied to the version you're using, which you didn't give.
"11g" is not a version, it's a product name.
You can find the version by running :
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE 11.2.0.3.0 Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
XQuery Update on Oracle in available in the latest version only : 11.2.0.3.
If you're using this version, Oracle recommends you start using XQuery Update.
Why we use copy in these statement, but the keyword copy is not used in a XQuery expression.
I think copy is not specific to Oracle, is it used in XQuery language ?<tt>copy</tt> is specific to the XQuery Update Facility (XQUF) extension of the XQuery 1.0 language.
The XQUF was primarily intended to work with native XML databases where it's OK to directly invoke update primitives (insert, delete, replace etc.) to modify database content.
On Oracle, it's not possible and the current implementation only supports XQUF through the "transform" operation (copy/modify syntax) where a copy of the original document/fragment is modified and written back to the db.
However, XQuery rewrite and related optimizations may occur so that piecewise updates actually take place. -
Hello,
is it possible to get prerelease of the next version of DBXML or at least the documentation focused on XQuery Update implementation.
Thanks
MarioMario,
2.4 will be generally available quite soon. The Getting Started Guides in the documentation have sections on basic XQuery Update usage (replacing the old sections on XmlModify). The candidate recommendation is a detailed (if not user-friendly) source of information:
http://www.w3.org/TR/xquery-update-10/
Regards,
George -
Hello,
I seems that the CVS version of XQuilla implements a large part of the XQuery Update working draft, which is great !
Does it mean that it's usable with BDB XML as-is to get database updates ?
Thanks,
FabriceHi Fabrice,
I'm afraid there is significant work to do in DB XML before XQuery Update can be used from it. However, It is our intention to support XQuery Update in some future version.
John -
XQuery Update Facility in XMLDB?
Hi
I didn't find information about XQuery Update Facility
support or XUpdate support in Oracle XML DB. Do you have
such info?
Regards,
--drkmXquery update is NOT anywhere near well enougth defined for us to implement it at present. We are actively involved in the standards process for XQuery update. It's very unclear what the future of the XUpdate is at this point...
We support node-level updates through a set of SQL functions
updateXML (9iR2 and later), insertChildXML, appendChildXML, insertXMLBefore and deleteXML (10gr2 and later)
Message was edited by:
mdrake -
XQuery Update (11.2.0.3) and the path table
Hi,
I'm currently using XQuery update on 11.2.0.3 to merge 2 XML documents, having tried a number of approaches up to now on 11.2.0.2.
My table has one XMLType column (securefile binary containing unstructured xml) which has XML deltas applied to it via a stored procedure.
An unstructured XML index is defined on the column.
Previously, I was doing the following:
1) Merge documents using XMLQuery; only produce a merged document if changes were detected
2) Update the table if the merged document is non-null
i.e.
select XMLQuery(<merging code>) passing oldDoc as "oldDoc", delta as "delta" returning content) into mergedDoc from dual;
if (mergedDoc is not null) then
update myTable set xmlDoc = mergedDoc where id=v_id;
end if;However, this replaces the entire document if any changes are detected (with an obvious impact on the path table).
I then read (UpdateXML query rewrite with unstructured data? about the use of XQuery Update in 11.2.0.3 to only target the affected document fragments so my current approach is:
update myTable
set xmldoc =
xmlquery('declare namespace m="http://www.blah.com/merge";
(: See if two nodes have matching text (or no text which is an empty sequence :)
declare function m:matchText($one as element(), $two as element()) as xs:boolean {
if ($one/text() = $two/text() or count($one/text())=0 and count($two/text())=0) then true() else false()
declare updating function m:merge($old as element()?, $new as element()?) {
(for $o in $old/* return
for $n in $new/* where name($o) = name($n) return
if (count($n/*) > 0) then
m:merge($o, $n)
else
if (m:matchText($n, $o)) then () else replace value of node $o with $n,
for $n in $new/* where (not(some $o in $old/* satisfies name($o) = name($n))) return insert node $n into $old)
copy $d := .
modify (
(m:merge($d/*,$delta/*))
) return $d'
passing xmldoc, delta as "delta"
returning content)
where id = v_id;If no changes were detected between the documents (i.e. the XQuery update did not actually modify the document), would you expect this statement to have no impact on the path table? Is there any way to get more trace information which shows what the update is actually doing when it executes?
Apologies if this is overlong or if I have omitted any supplementary information.
Thanks for any assistance
LarryHi,
many thanks for your reply.
A simple testcase is below. The recursive approach is required because the documents may be hierarchial.
create table mytable (id number(19,0), xmldoc xmltype) xmltype column "XMLDOC" store as securefile binary xml;
insert into myTable values (1,xmltype('<xml><el1>1</el1><el2>2</el2><el3>3</el3></xml>'));
update myTable
set xmldoc =
xmlquery('declare namespace m="http://www.blah.com/merge";
(: See if two nodes have matching text (or no text which is an empty sequence :)
declare function m:matchText($one as element(), $two as element()) as xs:boolean {
if ($one/text() = $two/text() or count($one/text())=0 and count($two/text())=0) then true() else false()
declare updating function m:merge($old as element()?, $new as element()?) {
(for $o in $old/* return
for $n in $new/* where name($o) = name($n) return
if (count($n/*) > 0) then
m:merge($o, $n)
else
if (m:matchText($n, $o)) then () else replace value of node $o with $n,
for $n in $new/* where (not(some $o in $old/* satisfies name($o) = name($n))) return insert node $n into $old)
copy $d := .
modify (
(m:merge($d/*,$delta/*))
) return $d'
passing xmldoc, xmltype('<xml><el1>1-UPDATE</el1><el4>4</el4></xml>') as "delta"
returning content)
where id = 1;This results in one update and one insert:
<xml><el1>1-UPDATE</el1><el2>2</el2><el3>3</el3><el4>4</el4></xml>It currently produces the following trace:
*** 2012-03-13 10:13:34.708
not delete/insert/replace in modify clause
--------- XQuery NO rewrt expr END-----
--------- XQuery NO rewrt expr BEG-----
UDF with noderef
--------- XQuery NO rewrt expr END-----I've noticed that even with a simple XQuery update like the following:
update myTable set xmldoc =
xmlquery('copy $d := .
modify (
(replace value of node $d/xml/el1 with "1-UPDATE-2",insert node <el4>4</el4> into $d/xml)
) return $d'
passing xmldoc
returning content) where id = 1;I get the following trace:
*** 2012-03-13 10:31:42.280
--------- XQuery NO rewrt expr BEG-----
non-simple content in target expression
--------- XQuery NO rewrt expr END-----
--------- XQuery NO rewrt expr BEG-----
not delete/insert/replace in modify clause
--------- XQuery NO rewrt expr END-----
Non-iterator usage
Non-iterator usageDoes this also indicate that a rewrite is not occurring, or is this only when a message like "NO REWRITE Reason ==> xseq:not optuop" is traced?
I'll try XSLT in the meantime.
Regards
Larry -
Startroutine issue when updating transactional DSO from parallel process
Hi
I have the following issue.
In a start routine i do some processing of data. In some cases errors missing master data creates a potiential error but does not stop the processing. What i want to achieve is the following.
I have created a transactional DSO where i want to update information about the records where issues is found in processing. I use a standard ABAP modify statement to update the DSO. This works fine when i run the DTP in 1 batch process but i get errors when i run the DTP in parallel. The problem is related to the database locking of the DSO table. I have tried to play around with ENQUEUE but cant get it right.
Any input to get this to work in parallel would be appreciated.
/ChrisHi ,
fiscal year variant, go into Customizing for Financial Accounting (FI) under Financial Accounting Global Settings >>>Fiscal Year >>>Maintain Fiscal Year Variant.
check this link ..
http://help.sap.com/saphelp_scm41/helpdata/en/50/0d89f2ad919c40b95b9ae7583c8c96/frameset.htm
http://help.sap.com/saphelp_scm41/helpdata/en/50/0d89f2ad919c40b95b9ae7583c8c96/content.htm
Regards,
shikha -
Is it possible with out BPM- update transaction from flat file - XI -RFC
Hi
my requirment is: i need to update 2 values transaction(ks01)
Required data we get in flat file(Val1,Val2), that data needs to be updated in transaction KS01 in r/3 system.
Scenario is: Flat file - XI - Rfc -KS01.
im have come across couple of doubts while thinking this way:
->is it possible using fie -to- rfc scenario to update KS01 transaction in R/3 system through RFC, if possible some body please explain the complete process to implement this scenario.
->is it possible file -to- rfc without BPM in XI
can somebody please help out me, how can i approach for the above requirment
-> help would be appriciated and thanks in advance
Regards
RajeshThe BAPI / RFC corresponding to your requirement is :
BAPI_COSTCENTER_CREATEMULTIPLE
You scenario on a high level would be FILE-XI-RFC
in your IR, map the corresponding fields of the fiel to the fields in the BAPI's interface.
As BAPI is synchronous , you may have to use BPM to implement the Asynch-Sync bridge.
Regards,
Ravi -
Update Transaction(IQS2) using BDC
Hi All,
I am developing BAPI (using BDC) which creates quality notification in SAP which is entered via front end web application. Structure p_qmsm contain 3 lines of task in notification. The code is as given below. To avoid problem of large no of lines on screen,code lines starting with * is used. This actually for pagedown after entering every 2 lines and creates new line. so that 2 lines always push up on screen and there will not be problem for creating large no of lines on screen
perform bdc_dynpro using 'SAPLIQS0' '7200'.
perform bdc_field using 'BDC_OKCODE' '=10\TAB11'.
LOOP AT p_qmsm INTO wa_qmsm.
perform bdc_dynpro using 'SAPLIQS0' '7204'.
perform bdc_field using 'BDC_OKCODE' '/00'.
CONCATENATE 'VIQMSM-QSMNUM(' wa_qmsm_cntr ')' INTO wm_qmsm_qsmnum.
CONCATENATE 'VIQMSM-MNGRP(' wa_qmsm_cntr ')' INTO wm_qmsm_mngrp.
CONCATENATE 'VIQMSM-MNCOD(' wa_qmsm_cntr ')' INTO wm_qmsm_mncod.
CONCATENATE 'VIQMSM-MATXT(' wa_qmsm_cntr ')' INTO wm_qmsm_matxt.
CONCATENATE 'VIQMSM-PSTER(' wa_qmsm_cntr ')' INTO wm_qmsm_pster.
CONCATENATE 'VIQMSM-PETER(' wa_qmsm_cntr ')' INTO wm_qmsm_peter.
perform bdc_field using wm_qmsm_qsmnum wa_qmsm-qsmnum.
perform bdc_field using wm_qmsm_mngrp wa_qmsm-mngrp.
perform bdc_field using wm_qmsm_mncod wa_qmsm-mncod.
perform bdc_field using wm_qmsm_matxt wa_qmsm-matxt.
perform bdc_field using wm_qmsm_pster wa_qmsm_pster.
perform bdc_field using wm_qmsm_peter wa_qmsm_peter.
wa_qmsm_cntr = wa_qmsm_cntr + 01.
ENDLOOP.
CALL TRANSACTION 'IQS2' USING wt_bdc
MODE 'N'
UPDATE 'A'
MESSAGES INTO P_MESSTAB.
The same code is used in modify mode also. web application is sending all 3 lines in modify mode even if single line is modified. It is already decided to send all rows back from web application to SAP in same sequence. It is working fine if i comment 5 lines which is starting with *. But in modify mode, how can i ensure that correct row is modified? and how can i achieve problem of large no of lines on screen?
Please suggest?
Edited by: Rob Burbank on Dec 14, 2009 3:20 PMModerator message - Please respect the 2,500 character maximum when posting. Post only the relevant portions of code. And please do not try to get around this by using two posts. I was able to re-format this by simply removing your commented out code.
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