Need to hunt a Shark in the Ocean of XML parsers

* I am just a kid started walking in XML roads.
* I need to design a XML sheet with some complex (obviously!!!) requirement.
* And I am searching for a good Parser that could efficiently parse a large heap of documents(memory efficiency and Time trade Off) in multiple Threads.
I searched for knowledge and here below is the conecentrated of what I got.
there are basically two type of parsers
1.SAX(StAX) - Fast but hold large memory
2.DOM - Object oriented realization of XML _ efficient memory consumption _ a bit slow
But I find a large number of parsers under each type each having their own simplicity and complexities and performance highlights and issues.
I am little bit confused about them. I searched for their comparison but can't find a few compilation but one( [http://www.xml.com/pub/a/2007/05/09/xml-parser-benchmarks-part-1.html] ). That compilation too had published their benchmarks with SAX n StAX parsers only and DOM parsers are not included.
So I really need help to get a little enlightening with comparison of SAX n DOM parsers.
Like * When we should go to DOM parser and When Should go to SAX parsers.
* When we should not go to DOM parsers and When Should not go to SAX parsers.
* Among the parsers of their type Which one is the best to use(like performance and Programming Trade Off).
Also I searched for the answers to the above questions too. But Since I didn't get a absolute idea.
Also I am posting here these questions since I believe that more than papers, Experience could answer these more.
So I am positively looking forward to the Experienced people of the Forum for their help.
If you think the answers are too big to explain please Guide me to the right place or right way.

Er.Vel wrote:
there are basically two type of parsers
1.SAX(StAX) - Fast but hold large memory
2.DOM - Object oriented realization of XML _ efficient memory consumption _ a bit slowno, this is not correct. more like:
1. SAX - fast and memory efficient, more complicated to use programmatically
2. DOM - slower and more memory, easier to user programmatically
i haven't used StAX, so i can't comment there. basically, DOM builds up everything in memory, which is more convenient to work with, but in general uses more memory. SAX is event based, with only a small amount of xml in memory at any given time. this is much less convenient to work but in general much better for processing large documents quickly (depending on what you want to do with them).

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How to insert the data from XML to a table

Hi,
I'm using Oracle 10g Express Edition
I need help in How to insert the data from XML file into the table.
Below is the example i'm working on..
I have create ridb user with below mentioned privileges:
Account Status Locked Unlocked
Default Tablespace: USERS
Temporary Tablespace: TEMP
User Privileges :
Roles:
CONNECT
RESOURCE
Direct Grant System Privileges:
CREATE DATABASE LINK
CREATE MATERIALIZED VIEW
CREATE PROCEDURE
CREATE PUBLIC SYNONYM
CREATE ROLE
CREATE SEQUENCE
CREATE SYNONYM
CREATE TABLE
CREATE TRIGGER
CREATE TYPE
CREATE VIEW
& table is created TRIALZIPCODES below mentioned is the DDL:
CREATE TABLE TRIALZIPCODES
STATE_ABBR VARCHAR2(20) NOT NULL
, ZIP_CODE NUMBER(10, 0) NOT NULL
, ZIP_CODE_EXT VARCHAR2(20)
Below is the XML FILE: which is stored in C:\OracleProject Folder
File name: trial.xml
<?xml version="1.0" ?>
<metadata>
- <Zipcodes>
- <mappings Record="4">
<STATE_ABBREVIATION>CA</STATE_ABBREVIATION>
<ZIPCODE>94301</ZIPCODE>
</mappings>
- <mappings Record="5">
<STATE_ABBREVIATION>CO</STATE_ABBREVIATION>
<ZIPCODE>80323</ZIPCODE>
<ZIP_CODE_EXTN>9277</ZIP_CODE_EXTN>
</mappings>
</Zipcodes>
</metadata>
PL/SQL Procedure:which i'm trying to execute from SQLDeveloper
create or replace
PROCEDURE TRIAL AS
BEGIN
DECLARE
-- declare attributes
charString varchar2(80);
finalStr varchar2(4000) := null;
rowsp integer;
v_FileHandle UTL_FILE.FILE_TYPE;
l_context_handle dbms_xmlgen.ctxHandle;
insCtx DBMS_XMLStore.ctxType;
begin
-- DBMS_XMLGEN.setRowTag ( ctx IN ctxHandle, rowTag IN VARCHAR2);
-- DBMS_XMLGEN.setRowSetTag ( ctx IN ctxHandle, rowSetTag IN VARCHAR2);
-- the name of the table as specified in our DTD
DBMS_XMLGEN.SETROWSETTAG(l_context_handle,'zipcodes');
-- the name of the data set as specified in our DTD
DBMS_xmlgen.setRowTag(l_context_handle,'mappings');
-- for getting the output on the screen
dbms_output.enable(1000000);
-- open the XML document in read only mode
v_FileHandle := utl_file.fopen('c:/OracleProject','trial.xml', 'r');
loop
BEGIN
utl_file.get_line(v_FileHandle, charString);
exception
when no_data_found then
utl_file.fclose(v_FileHandle);
exit;
END;
dbms_output.put_line(charString);
if finalStr is not null then
finalStr := finalStr || charString;
else
finalStr := charString;
end if;
end loop;
-- for inserting the XML data into the table
insCtx := DBMS_XMLSTORE.NEWCONTEXT('RIDB.TRIALZIPCODES');
insCtx := DBMS_XMLSTORE.INSERTXML(insCtx, finalStr);
dbms_output.put_line('INSERT DONE '||TO_CHAR(rowsp));
DBMS_XMLStore.closeContext(insCtx);
END;
END TRIAL;
For the first time when i complied i got the errors as :
Procedure RIDB.PROCEDURE1@RIDB
Error(16,14): PLS-00201: identifier 'UTL_FILE' must be declared
Error(16,14): PL/SQL: Item ignored
Error(29,1): PLS-00320: the declaration of the type of this expression is incomplete or malformed
Error(29,1): PL/SQL: Statement ignored
Error(33,1): PL/SQL: Statement ignored
Error(33,19): PLS-00320: the declaration of the type of this expression is incomplete or malformed
Error(36,1): PL/SQL: Statement ignored
Error(36,17): PLS-00320: the declaration of the type of this expression is incomplete or malformed
So i logged in as sys & grant the permission to execute on UTL_FILE to ridb (user):
SQL Statement:
grant execute on utl_file to ridb
So, it got compiled successfully but when i execute it gives me error as:
Source does not have a runnable target.
What does this mean?
So I browse through forum & i got to know that i need to initial the UTL_FILE_DIR ="C:/OracleProject" in init.ora
So can i edit the init.ora with notepad.When i tried to do that it says permission denied
In my system it shows the init.ora file in path C:\oraclexe\app\oracle\product\10.2.0\server\config\scripts
but there is also other file initXETemp in the same path do i need to do the changes in it.
I have tried even editing the SPFILE as mentioned below:
C:\oraclexe\app\oracle\product\10.2.0\server\dbs\SPFILEEXE - I had edit this file using notepad & set the value of UTL_FILE_DIR ="C:/OracleProject". So next time when i restarted i'm unable to log on to the database.
So i had reinstall the software again.
Could you please let me know how to proceed..

hi,
I have created the directory from sys database
CREATE or replace DIRECTORY XML_DIR2 AS 'C:\OracleProject';
& grant read,write access to the user
grant read,write on directory XML_DIR2 to RIDB;
& i had change the tag name in the xml file as shown below:
<?xml version = '1.0'?>
<metadata>
<Zipcodes>
<mappings Record="4">
<STABBRE>CA</STABBRE>
<ZIPCODE>94301</ZIPCODE>
</mappings>
<mappings Record="5">
<STABBRE>CO</STABBRE>
<ZIPCODE>80323</ZIPCODE>
<ZIPCODEEXT>9277</ZIPCODEEXT>
</mappings>
</Zipcodes>
</metadata>
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(     "STABBRE" VARCHAR2(20 BYTE),
     "ZIPCODE" NUMBER(*,6) NOT NULL ENABLE,
     "ZIPCODEEXT" NUMBER
) PCTFREE 10 PCTUSED 40 INITRANS 1 MAXTRANS 255 NOCOMPRESS LOGGING
STORAGE(INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1 BUFFER_POOL DEFAULT)
TABLESPACE "USERS" ;
I have tried two methods as shown below:
Procedure 1:
create or replace
PROCEDURE TRIAL_V2 AS
BEGIN
DECLARE
-- declare attributes
charString varchar2(80);
finalStr varchar2(4000) := null;
rowsp integer;
v_FileHandle UTL_FILE.FILE_TYPE;
l_context_handle dbms_xmlgen.ctxHandle;
insCtx DBMS_XMLStore.ctxType;
cnt NUMBER;
xmldoc xmltype := xmltype( bfilename('XML_DIR2','trialxml.xml'), nls_charset_id('AL32UTF8') );
--XML_DIR VARCHAR2(40) := 'C:\\OracleProject';
BEGIN
insCtx := DBMS_XMLStore.newContext('DEV.TRIALZIPCODES');
DBMS_XMLStore.setUpdateColumn(insCtx, 'STABBRE');
DBMS_XMLStore.setUpdateColumn(insCtx, 'ZIPCODE');
DBMS_XMLStore.setUpdatecolumn(insCtx, 'ZIPCODEEXT');
DBMS_XMLStore.setRowTag(insCtx, 'mappings');
cnt := DBMS_XMLStore.insertXML(insCtx, xmldoc);
DBMS_XMLStore.closeContext(insCtx);
END;
Procedure 1 was compiled with out errors but when i execute i got the error as :
Source does not have a runnable target.
Procedure 2_
CREATE OR REPLACE PROCEDURE TRIAL_V3 AS
BEGIN
DECLARE
-- declare attributes
charString varchar2(80);
finalStr varchar2(4000) := null;
rowsp integer;
v_FileHandle UTL_FILE.FILE_TYPE;
l_context_handle dbms_xmlgen.ctxHandle;
insCtx DBMS_XMLStore.ctxType;
cnt NUMBER;
xmldoc xmltype := xmltype( bfilename('XML_DIR2','trialxml.xml'), nls_charset_id('AL32UTF8') );
--XML_DIR VARCHAR2(40) := 'C:\\OracleProject';
BEGIN
INSERT INTO trialzipcode (STABBRE, ZIPCODE, ZIPCODEEXT)
SELECT extractvalue(x.column_value, 'mappings/STABBRE'),
extractvalue(x.column_value, 'mappings/ZIPCODE'),
extractvalue(x.column_value, 'mappings/ZIPCODEEXT')
FROM TABLE(
XMLSequence(
EXTRACT(
xmltype( bfilename('XML_DIR2','trialxml.xml'), nls_charset_id('AL32UTF8') ),
'metadata/Zipcodes/mappings'
) x
END;
END TRIAL_V3;
Procedure 2 was complied without errors but when i execute i got the error as:
Connecting to the database RIDB.
ORA-22288: file or LOB operation FILEOPEN failed
The system cannot find the file specified.
ORA-06512: at "SYS.DBMS_LOB", line 523
ORA-06512: at "SYS.XMLTYPE", line 287
ORA-06512: at "RIDB.TRIAL_V3", line 12
ORA-06512: at line 2
Process exited.
Disconnecting from the database RIDB.
Could you please let me know how to proceed...

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brendanfromsydney wrote:
What are the different opinions on why pages should not achieve this?
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If I understand well these design choices match :
++-+-+-+-+-+-+-+-++
Apple Human Interface Guidelines:
Apply the 80 Percent Solution
During the design process, if you discover problems with your product design, you might consider applying the 80 percent solution‚ that is, designing your software to meet the needs of at least 80 percent of your users. This type of design typically favors simpler, more elegant approaches to problems.
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+-+-+-+-+-+-+-+-+-++
Yvan KOENIG (VALLAURIS, France) jeudi 9 juin 2011 16:03:52
iMac 21”5, i7, 2.8 GHz, 4 Gbytes, 1 Tbytes, mac OS X 10.6.7
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Need to add new fields to the condition table

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>
Rinkesh Doshi wrote:
> Hello,
>
> The specific ABAP question which I have is :
>
> Is there any way in which we can enhance the existing field catalog in M/03 tcode to include the 4 new fields (client ,characteristic,class,internal characteristic) ?
>
> Thanks.
Please post your code which you developped until now and show us where the problem is. I cant see any ABAP related question.

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Library Duplicated
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I have my disks that came with my laptop I have went into disk utility to repair disk and I still seem to have the same problem .. No icons or apps or anything lol just the cursor I can only shut down the laptop via power but and the press shut down.
Please help I am going out my mind with this thing :(
Thanks x jade

This can be used to boot the machine and delelte enough files to get it to boot normally.
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Need to hunt a Shark in the Ocean of XML parsers

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