Converting from PDF directly to Java Objects/XML (and PDF format questions)

Hi,
I posted this originally in the Acrobat Windows forums but was told I might have more luck here, so here goes:
I am desperately trying to find a tool (preferably open source but commercial is fine also) that will sit on top of a PDF and allow me to query it's text for content and formatting (I don't care about images). I have found some tools that get me part of the way there, but nothing that seems to provide an end-to-end solution but is quite lightweight. My main question is WHY are there so many tools that go from PDF to RTF, and many tools that go from RTF to XML, but NONE that I can find that go PDF to XML.
To clarify, by formatting I simply mean whether a line/block of text is bold/italic, and its font size. I am not concerned with exact position on the page. The background is that I will be searching PDFs and assigning importance to whether text is a heading/bodytext etc. We already have a search tool in place so implementing a pure PDF search engine is not an option. I need a lightweight tool that simply allows me to either make calls directly to the PDF OR converts to XML which I can parse.
Some tools I have tried:
1) PDFBox (Java Library) - Allows the extraction of text content easily, but doesn't seem to have good support for formatting.
2) JPedal (Java Library) - Allows extraction of text content easily, and supports formatting IF XML structured data is in the PDF (not the case for my data).
3) Nitro PDF (Tool) + RTF to XML (script) - This works quite nicely and shows that PDF to XML is possible, but why do I have to use 2 tools? Also, these are not libraries I can integrate into my app.
4) iText (Java Library) - Seems great at creating PDFs but poor at extracting content.
I don't really expect someone to give me a perfect solution (although that would be nice!).
Instead, what I'd like to know is WHY tools support PDF to RTF/Word/whatever retaining formatting, and other tools support RTF to XML with the formatting information retained. What is it about PDF and RTF/Word that makes it feasible to convert that way, but not to XML. Also, as I found in 3) above, it is perfectly feasible to end up as XML from PDF, so why do no tools support this reliably!
Many thanks for any advice from PDF gurus.

XML doesn't mean anything - it's just a generic concept for structuring
information. You need a specific GRAMMAR of XML to mean anything. So what
grammar would you use? Something standard? Make up your own?
However, there are a number of commercial and open source products that can
convert PDF to various XML grammars - SVG, ABW, and various custom grammars.
But the other thing you need to understand is that most PDF files do not
have any structure associated with them (as you saw when using JPEDAL). As
such, any concepts of paragraphs/sections/tables/etc. Are WILD GUESSES by
the software in question.

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"ag" <[email protected]> wrote:
>
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I am posting a working example of Passing Array of java objects to and from oracle database . I have struggled a lot to get it working and since finally its working , postinmg it here so that it coudl be helpful to the rest of the folks.
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import java.io.*;
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person_name VARCHAR2(30) EXTERNAL NAME 'person_name'
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create or replace
procedure give_me_an_array( p_array in person_tab,p_arrayout out person_tab)
as
l_person_id Number;
l_person_name Varchar2(200);
l_person person_t;
l_p_arrayout person_tab;
errm Varchar2(2000);
begin
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loop
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p_arrayout := l_p_arrayout;
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commit;
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end;
vi) Now finally create your java class which will invoke the pl/sql procedure and get the updated value array and then display it on your screen>Alternatively you can also check the "person_test" tbale
import java.util.Date;
import java.io.*;
import java.sql.*;
import oracle.sql.*;
import oracle.jdbc.driver.*;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
public class ArrayDemo
public static void passArray() throws SQLException
Connection conn = getConnection();
ArrayDemo a = new ArrayDemo();
Person pn1 = new Person();
pn1.person_id = 1;
pn1.person_name = "SunilKumar";
Person pn2 = new Person();
pn2.person_id = 2;
pn2.person_name = "Superb";
Person pn3 = new Person();
pn3.person_id = 31;
pn3.person_name = "Outstanding";
Person[] P_arr = {pn1, pn2, pn3};
Person[] P_arr_out = new Person[3];
ArrayDescriptor descriptor =
ArrayDescriptor.createDescriptor( "PERSON_TAB", conn );
ARRAY array_to_pass =
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OracleCallableStatement ps =
(OracleCallableStatement )conn.prepareCall
( "begin give_me_an_array(?,?); end;" );
ps.setARRAY( 1, array_to_pass );
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Object[] personDetails = (Object[]) returnArray.getArray();
Person person_record = new Person();
for (int i = 0; i < personDetails.length; i++) {
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          System.out.println( "row " + i + " = '" + person_record.person_name +"'" );
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     try
                         ArrayDemo tfc = new ArrayDemo();
                         tfc.passArray();
     catch(Exception e) {
                    e.printStackTrace();
          public static Connection getConnection() {
     try
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                         "username", "password");
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and thats it. you are done.
Hope it atleast helps people to get started. Comments are appreciated. I can be reached at ([email protected]) or [email protected]
Thanks
Sunil.s

Hi Sunil,
I've a similar situation where I'm trying to insert Java objects in db using bulk insert. My issue is with performance for which I've created a new thread.
http://forum.java.sun.com/thread.jspa?threadID=5270260&tstart=30
I ran into your code and looked into it. You've used the Person object array and directly passing it to the oracle.sql.ARRAY constructor. Just curios if this works, cos my understanding is that you need to create a oracle.sql.STRUCT out of ur java object collection and pass it to the ARRAY constructor. I tried ur way but got this runtime exception.
java.sql.SQLException: Fail to convert to internal representation: JavaBulkInsertNew$Option@10bbf9e
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                    at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)
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                    at oracle.jdbc.oracore.OracleTypeADT.toDatumArray(OracleTypeADT.java:274)
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                    at oracle.sql.ArrayDescriptor.toOracleArray(ArrayDescriptor.java:1314)
                    at oracle.sql.ARRAY.<init>(ARRAY.java:152)
                    at JavaBulkInsertNew.main(JavaBulkInsertNew.java:76)
Here's a code snippet I used :
Object optionVal[] =   {optionArr[0]};   // optionArr[0] is an Option object which has three properties
oracle.sql.ArrayDescriptor empArrayDescriptor = oracle.sql.ArrayDescriptor.createDescriptor("TT_EMP_TEST",conn);
ARRAY empArray = new ARRAY(empArrayDescriptor,conn,optionVal);If you visit my thread, u'll see that I'm using STRUCT and then pass it to the ARRAY constructor, which works well, except for the performance issue.
I'll appreciate if you can provide some information.
Regards,
Shamik

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https://smpdl.sap-ag.de/~sapidp/012002523100008782452011E/cr2008sp4.exe
But before you do that check with the BOE admin, SP's should match also but not required.
They should work together, When you use the Report Wizard you'll see an option to connect to Enterprise and then log in using your User account and then the Repository will have the Universes available. Remember this is all set up by the Administrator so you will need the Admin person to grant you access to the Repository as well as anything else you need access to. Once you create the report then you can Publish them to your folder or a common folder and the Admin can then share your reports.
WEBI is what the name implies, it's a WEB interface to allow you to create reports using it's Report Wizard. It does take some getting used to and you should have training available, check with your admin group again. Same as CRD, it tool allows you to create reports but is much more flexible than WEBI is in a few ways but once you understand how WEBI works it has some very powerful tools also.
CR allows you to access any database field you have permission to see, it fully supports database permissions. So if you can't see them again you have to ask your DBA to grant you permissions. You can then link tables including your late entry table if it is separate or simply hitting the refresh button in the viewer will requery the DB for new rows of data. All depends on how it's set up.
As for security, this is a decision your company has made. SAP is just a tool that allows you to be secure. With today's security threats and other privacy laws and hackers abilities to get to and cause personal harm to those affected it's just the way things are these days. Take this up with your Management, it's not something we can decide for you and certainly can't provide you with ways to circumvent the security.....
There is training available for both WEBI and CR as well as third party Help for books available. Downloading the sample reports is a great place to start, you can switch between Design and preview mode and see what happens when you make changes....
Thanks again
Don

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