Question to Steve - document('somedocument.xml') efficiency.

Hi.
I have a question about how efficient is using external documents in XSLT with Oracle XML parser and XSLT processor. Will somedocument.xml be reloaded every time I access something like document('somedocument.xml')/root/node/whatever?
Will this document be reloaded every time if I use
<xsl:variable name="t" select="document('somedocumentorURL.xml')/root/set"/>
and then use
<xsl:value-of select="$t/node1"/>
<xsl:value-of select="$t/node2"/>
and so on.
Is there some cache for external documents implemented? Or what is the preferred way of accessing information in external documents?
Thank you in advance for the answer.
Bye.

The XSLT 1.0 spec requires a processor to fetch the resource only once per transformation "run" for each distinct URI that you pass to the document() function.

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I am new to XML and especially XML DB which I however see as an excellent platform on which to base XML based solutions. I have a specific question and apologise beforehand should any of my assumptions be incorrect.
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Thanks
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Hi
The size of the documents I want to compose are expected vary from a few Kb to 1 or 2 Gb! In a FAQ found somewhere on OTN there was an entry which mentioned that somebody was having trouble with a 50Mb XML document. The recommendation was to use SAX but I am under the impression that this is more useful when the processing is of a more sequential nature.
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Hans

Document in xml - Not serializable? Well, I need to cache it.

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Sorry about not being very helpful earlier. The number of people who submit JDC forum questions without reading even the elementary intro docs is rather staggering, IMHO. Here is something more detailed:
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(b) what matters to Java serialization is whether the object in question is runtime-Serializable. In your particular case, org.w3c.dom.Document is an interface and it was not declared as Serializable by W3C. Perhaps justifiably so, because that imposes unfair requirements on parser implementors [seeing that not everybody is expected to want to serialize a DOM tree the way you do].
However, a particular parser implementation is free to make its Document implementation class as Serializable. If that is the case, writeObject(obj) will succeed even if "obj" variable is of Document [not Serializable] type but happens to point to a Serializable implementation class.
But, if you rely on this behavior you are locking yourself into that particular parser implementation. Should you choose a different XML parser in the future you will see serialization errors at runtime. With things like JAXP and a variety of XML parsers available this perhaps is not the way to go.
Things would have been different if Document was declared to implement Serializable. Then all XML parsers would have had a standard behavior for the DOM trees they produced, regardless of implementation details. This is not the case, though.
Vlad.

No questions, just some ANSWERS about XML

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i Sorry, can't find button 'Add Topic'. Have to write here. 8)
Need to build document with repeated items (companies, contacts, description). This info stored in DB and can be exported in XML the way I need. InDesign CS3.
Here is the details:
Each company has name and contacts (address, tel, fax, email and site, BUT some of them may be missed) and may have a description (but may NOT)
In my doc I want to see smth like that for each company:
a) paragraph with company name
b) all contact info in separated paragraphs
c) description paragraph
Trouble is that I get unnecessary line breaks in places where some contact info or description are missed.
Can anyone help? Sorry for my english 8)

Document in xml - Not serializable?

Hi, I was working with the Document in xml.
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XMLSchema schema=new XMLSchema();
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schema = (XMLSchema)builder.build(url);
SchemaClassGenerator generator = new SchemaClassGenerator();
Generate the Java classes from the example XML Schema.
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Where can i get good documents for XML

Hai,
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Got error message when store XML documents into XML DB repository, via WebD

Hi experts,
I am in I am in Oracle Enterprise Manager 11g 11.2.0.1.0.
SQL*Plus: Release 11.2.0.1.0 Production on Tue Feb 22 11:40:23 2011
I got error message when store XML documents into XML DB repository, via WebDAV.
I have successfully registered 5 related schemas and generated 1 table.
I have inserted 40 .xml files into this auto generated table.
using these data I created relational view successfully.
but since I couldn't store XML documents into XML DB repository, via WebDAV
when I query using below code:
SELECT rv.res.getClobVal()
FROM resource_view rv
WHERE rv.any_path = '/home/DEV/messages/4fe1-865d-da0db9212f34.xml';
I got nothing.
My ftp code is listed below:
ftp> open localhost 2100
Connected to I0025B368E2F9.
220- C0025B368E2F9
Unauthorised use of this FTP server is prohibited and may be subject to civil and criminal prosecution.
220 I0025B368E2F9 FTP Server (Oracle XML DB/Oracle Database) ready.
User (I0025B368E2F9:(none)): fda_xml
331 pass required for FDA_XML
Password:
230 FDA_XML logged in
ftp> cd /home/DEV/message
250 CWD Command successful
ftp> pwd
257 "/home/DEV/message" is current directory.
ftp> ls -la
200 PORT Command successful
150 ASCII Data Connection
drw-r--r-- 2 FDA_XML oracle 0 DEC 17 19:19 .
drw-r--r-- 2 FDA_XML oracle 0 DEC 17 19:19 ..
226 ASCII Transfer Complete
ftp: 115 bytes received in 0.00Seconds 115000.00Kbytes/sec.
250 SET_CHARSET Command Successful
ftp> put C:\ED\SPL\E_Reon_Data\loaded\4fe1-865d-da0db9212f34.xml
200 PORT Command successful
150 ASCII Data Connection
550- Error Response
ORA-00600: internal error code, arguments: [qmxConvUnkType], [], [], [], [], [], [], [], [], [], [], []
550 End Error Response
ftp: 3394 bytes sent in 0.00Seconds 3394000.00Kbytes/sec.
I have tried all suggestion from another thread such as:
alter system set events ='31150 trace name context forever, level 0x4000'
SQL> alter system set shared_servers = 1;
but failed.
is there anyone can help?
Thanks.
Edited by: Cow on Mar 29, 2011 12:58 AM

Hi experts,
I am in I am in Oracle Enterprise Manager 11g 11.2.0.1.0.
SQL*Plus: Release 11.2.0.1.0 Production on Tue Feb 22 11:40:23 2011
I got error message when store XML documents into XML DB repository, via WebDAV.
I have successfully registered 5 related schemas and generated 1 table.
I have inserted 40 .xml files into this auto generated table.
using these data I created relational view successfully.
but since I couldn't store XML documents into XML DB repository, via WebDAV
when I query using below code:
SELECT rv.res.getClobVal()
FROM resource_view rv
WHERE rv.any_path = '/home/DEV/messages/4fe1-865d-da0db9212f34.xml';
I got nothing.
My ftp code is listed below:
ftp> open localhost 2100
Connected to I0025B368E2F9.
220- C0025B368E2F9
Unauthorised use of this FTP server is prohibited and may be subject to civil and criminal prosecution.
220 I0025B368E2F9 FTP Server (Oracle XML DB/Oracle Database) ready.
User (I0025B368E2F9:(none)): fda_xml
331 pass required for FDA_XML
Password:
230 FDA_XML logged in
ftp> cd /home/DEV/message
250 CWD Command successful
ftp> pwd
257 "/home/DEV/message" is current directory.
ftp> ls -la
200 PORT Command successful
150 ASCII Data Connection
drw-r--r-- 2 FDA_XML oracle 0 DEC 17 19:19 .
drw-r--r-- 2 FDA_XML oracle 0 DEC 17 19:19 ..
226 ASCII Transfer Complete
ftp: 115 bytes received in 0.00Seconds 115000.00Kbytes/sec.
250 SET_CHARSET Command Successful
ftp> put C:\ED\SPL\E_Reon_Data\loaded\4fe1-865d-da0db9212f34.xml
200 PORT Command successful
150 ASCII Data Connection
550- Error Response
ORA-00600: internal error code, arguments: [qmxConvUnkType], [], [], [], [], [], [], [], [], [], [], []
550 End Error Response
ftp: 3394 bytes sent in 0.00Seconds 3394000.00Kbytes/sec.
I have tried all suggestion from another thread such as:
alter system set events ='31150 trace name context forever, level 0x4000'
SQL> alter system set shared_servers = 1;
but failed.
is there anyone can help?
Thanks.
Edited by: Cow on Mar 29, 2011 12:58 AM

Question about Java,XSLT and XML

I am new to Java and XML. I'm not quite clear the relationship between Java,XSLT and XML.
To exercise, I am going to write a Java program that makes embedded calls to an XSLT processor(XALAN), to produce results for several constrained transformations from a given XML document(x.xml) such as:
1.Transform the x.xml (which satisfies d1.dtd) in such a way that it now conforms to the DTD d2.dtd. Output the resulting xx.xml document.
2.query some information from the x.xml and then form an Html output.
3.summary some information, do some statistics from the x.xml and then form an Html output.
I don't konw which java classes and XSLT functions might be used.(Actually I don't know how/where to start).
Can anyone give me some clue ?
thanks a lot!

You must provide XSLT stylesheeds to specify transformations (1), (2),
and (3); let's call those stylesheets task1.xsl and so on.
The following code will transform x.xml into xx.xml according to task1.xsl. It gives you an idea which packages and classes to use, but it doesn't teach you proper Java programming technics :)
import java.io.File;
import javax.xml.transform.*;
import javax.xml.transform.stream.*;
public class Test
    public static void main(String[] args) throws Exception
        TransformerFactory factory = TransformerFactory.newInstance();
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        Source source = new StreamSource(new File("x.xml"));
        Result result = new StreamResult(new File("xx.xml"));
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}To read about XSLT, see:
http://www.w3.org/TR/xslt
there is a tutorial on using XSLT with Java:
http://java.sun.com/xml/jaxp/dist/1.1/docs/tutorial/xslt/index.html.

How to convert XML document to xml variable?

Hi,
I have taken an xml variable in my process and reading a xml document file. Can anyone tell me how can i convert this xml document to xml variable so that i can parse the xml variable.
I am able to convert xml variable to xml document variable by using set value activity. But how do I perform reverse process.
I want to perform this conversion because i want to keep xml data in document format on storage drive and then parse this xml data so that i can read the nodes.
Any help will be appreciated..
Regards
Sunil

we can use set value activity to reach these xml docs and assign it to xml variable.
Then parsing of this xml can be browsed to find the nodes.
Regards
Sunil

Question to Steve - document('somedocument.xml') efficiency.

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