Using the SAX Parser

As I reported in this thread: Carriage Returns in XSLT output I am trying to produce a text output file with each line terminating in cr-lf (using the output from ViewObject.writeXML() passed through the XSLProcessor.processXSL() method to apply a XSLT stylesheet transformation to it), but the cr characters in the stylesheet are being converted to nl characters, so I am ending up with two nl characters at the end of each line.
I found a 2002 query (here: http://www.xslt.com/html/xsl-list/2002-04/msg00193.html) by someone with the same problem, and a reply by Steve Muench explaining it and stating that the Oracle SAX parser does not have the same problem.
So my question now is - does the SAX parser still retain cr characters (or is it too now converting them to nl) and if it does, how do I make XSLProcessor.processXSL() use it rather than the default XML parser? Can I do it from within my code, or does it need to be set in some sort of environment variable? We are on version 9.0.5.2 of JDeveloper(10g)

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Using the SAX parser to split up a document to be processed by a DOMParser

I need to process a potentially large document which could prove too large to be read into memory at once by the DOM parser. The document would look something like..
(sorry about the formatting - can't use tabs!)
<Root>
<Parent>
<Child>
<Blah.....................
</Blah>
</Child>
</Parent>
<Parent>
<Child.......
</Child>
</Parent>
etc...
etc...
</Root>
The number of Parent elements could potentially be in the thousands. What I would like to do would be to use the SAX parser to read the document and when a Parent element is encountered, write the parent element and all its children to a stream in order that an input source can be created. The input source can then be parsed by a DOM parser. Once complete, the next Parent element encountered by the SAX parser could be passed to the DOM parser and so on until all of the Parent elements have been processed.
This way I can combine the ease of parsing the document using the DOM parser without having to worry about the overhead on memory.
Does anyone have any ideas as to the best approach? I could use the SAX parser for the whole thing but the XML is quite complex and lends itself to DOM parsing much more conveniently.

Can you read the file line by line:
start the reading at <child>
pause reading at </child>
copy the string to a var
wrap it with respective tags (<?xml<doctype etc...) and parse
proceed to the next <child>xx</child>
and repeat till you hit the closing of the file...
- Ravi

Validating xml file against a specific schema using jaxp sax parser

Hi,
I would like to validate a soap xml given below
<?xml version="1.0" encoding="UTF-8"?>
<Envelope>
     <Body>
          <name>pavan</name>
          <number>123</number>
     </Body>
</Envelope>
to validate against the schema of soap from url "http://www.w3.org/2003/05/soap-envelope". I dont want to have this namespace in the xml. How can I validate against the specified schema using jaxp sax parser?
Please help.
Thanks,
T.Pavan kumar

Any one, please help.

Encoding error using Oracle SAX Parser, please help

Hi, All,
I have problem while I am trying to parse an XML file using Oracle SAX Parser.
The following is from the trace file:
java.io.UTFDataFormatException: Invalid UTF8 encoding.
java.io.UTFDataFormatException: Invalid UTF8 encoding.
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.io.IOException.<init>(Compiled Code)
at java.io.UTFDataFormatException.<init>(Compiled Code)
at oracle.xml.parser.v2.XMLUTF8Reader.checkUTF8Byte(Compiled Code)
at oracle.xml.parser.v2.XMLUTF8Reader.readUTF8Char(Compiled Code)
at oracle.xml.parser.v2.XMLUTF8Reader.fillBuffer(Compiled Code)
at oracle.xml.parser.v2.XMLByteReader.saveBuffer(Compiled Code)
at oracle.xml.parser.v2.XMLReader.fillBuffer(Compiled Code)
at oracle.xml.parser.v2.XMLReader.tryRead(Compiled Code)
at oracle.xml.parser.v2.XMLReader.scanXMLDecl(Compiled Code)
at oracle.xml.parser.v2.XMLReader.pushXMLReader(Compiled Code)
at oracle.xml.parser.v2.XMLReader.pushXMLReader(Compiled Code)
at oracle.xml.parser.v2.XMLParser.parse(Compiled Code)
at data_loader.main(Compiled Code)
The XML file is a pure ascii text file, with encoding set to UTF-8.
I can parse the file correctly on NT, but I got problem when I ran the code on a SUN solaris 2.6 machine.
The parser version is 9.0.2.
Thanks in advance.
Peter

You are right, I modified the codes and got it to work on Oracle
But when I did your suggestion:
<cftransaction>
<cfstoredproc ...>
<cfquery>
    SELECT ...
</cfquery>
</cftransaction>
I got the same error as before which is:
Error Executing Database Query.
[Macromedia][Oracle JDBC Driver]Unhandled sql type
But this time it points to the CF callling the str proc using cfprocparam
Here is how I call the str. proc:
     <CFTRANSACTION>
          <cfstoredproc procedure="MyReport" datasource="#Trim(application.dsn)#" returncode="True">
              <cfprocparam type="In" cfsqltype="CF_SQL_VARCHAR" variable="ins_name" value="#Trim(session.instname)#">
              <cfprocparam type="In" cfsqltype="CF_SQL_VARCHAR" variable="aca_year" value="#Trim(ayr)#"> <------- POINT TO THIS LINE
          </cfstoredproc>
     </CFTRANSACTION>

Trying to use XML SAX parser with JDK2 ...

Hi,
I'm pretty new to Java.
I'm trying to write and use java sample using XML SAX parser. I try with XP and XML4J.
Each time I compile it give me a error message like
"SAX01.java:23: unreported exception java.lang.Exception; must be caught or declared to be
thrown
(new SAX01()).countBooks();
^
Note: SAX01.java uses or overrides a deprecated API.
Note: Recompile with -deprecation for details.
1 error"
For what I found, it seems that "deprecated" mean usage of old classes or methods. What should I do ?
Wait for the XML parser to be rewrite ? ....
Thank's
Constant

"SAX01.java:23: unreported exception
java.lang.Exception; must be caught or declared to be
thrown
(new SAX01()).countBooks();
^Do this
public static void main(String[] args) throws Exception {
or do this
     try
                   first part of expression?(new SAX0()).countBooks();
     catch(Exception ex)
          System.out.println("problem "+ ex);
Note: SAX01.java uses or overrides a deprecated API.
Note: Recompile with -deprecation for details.
1 error"deprecation is just a warning if there are no errors elsewhere in your program it should compile fine, but if you want to find out how to change it do this:
javac YourClassName.java -deprecation
then look in the docs for an alternative.

Can multiple APEX application use the same parsing schema?

Hi,
I have 4.2 APEX thru pl/sql Gatewat, 11gr2 DB and using theme 24.
Due to the APEX limitation for version control I would be splitting 1 big ERP applications into 24 different APEX applications and each application would be considered as 1 unit for version control.
I have about 800 tables and I would assume that all of these would need to be stored in 1 schema since a lot of these table are linked thru FK.
Can I have multiple APEX APPS using the same parsing schema? or is there a better way to do this?
Thanks in advance!

Hi,
Multiple applications can have same (one) parsing schema.
You can test that on e.g. apex.oracle.com, where normally you have only one schema and you create multiple applications and all use that same schema.
Regards,
Jari
My Blog: http://dbswh.webhop.net/htmldb/f?p=BLOG:HOME:0
Twitter: http://www.twitter.com/jariolai
Edited by: jarola on Jan 28, 2013 7:15 PM

HOW TO: Use the XML parser in Oracle 8.1.7

I am trying to figure out how to use the xml parser provided in oracle 8.1.7. all i want to do is parse a xml report that is defined using a schema, and place the data into the proper tables. i am totally unfamiliar with the xml parser and how it works. i have done some reading on the subject, but seem to be getting some conflicting infromation about which utilites i need and how to invoke them. can someone please tell me what utilities i need, how to invoke them, and what i need to do to get a xml document to parse and insert to a table? I would greatly appreciate any help anybody could offer. thanks.

You can parse the XML Document with XML Parser and place the data into database using XSU(XML SQL Utility).
Both of these are included in XDK for Java at:
http://otn.oracle.com/tech/xml/xdk_java
The following document could also help:
Oracle9i XML Developer's Guide--XDK [PDF] at http://otn.oracle.com/tech/xml/doc.html

How to use the kxml parser?

I am getting problem in using the kxml parser.Actually my application is showing the java.lang.NoClassDefFoundError: org/kxml/parser/XmlParser error.
Can you tell me how to use the kxml parser with our j2me application or what are the steps for this?
Whether we have to use the kxml.zip or some other JAR file for this?
Again whether we have to set any classpath for this?

I was getting same error using kxml parser. The reason is losing interface in which constants are declared.
You need to correct code of kxml a bit.
In every place where constant from XmlPullParser interface is referenced only by its name (without reference to its class XmlPullParser) you need to change for use full name. it means changes like:
START_DOCUMENT to XmlPullParser.START_DOCUMENT
Everywhere.
That's all!

Why the SAX parser cannot support the special character like "¡"

I do not understand why the SAX parser cannot support the special character like ¡ but it can replace the " & < > to ", &, <, >, ,, but other characters will be replaced to empty charater.
can somebody give me any suggestions or solutions. THX.
Edited by: 844086 on 2011-3-14 上午2:27
Edited by: 844086 on 2011-3-14 上午2:27

I quote:
Alternatively implement an EntityResolver that resolves the desired escapes.You are again an example that people only read/register the first thing written in a post.

? - Is there a way to validate 1 XML record at a time, using the SAX or oth

Hello!
Before running into space problems, i generated an XML file from a 'pipe delimited' file and and then processed that XML file thru a SAXParser 'validator' and the data was correctly validated, using the RELAXNG Schema patterns as the validation criteria!
But as feared, the XML file was huge! (12 billion XML recs. generated from 1 billion 'pipe' recs.) and i am now trying to find a way to process 1 'pipe' record at a time, (ie) read 1 record from the 'pipe delimited' file, convert that rec. to an XML rec. and then send that 1 XML rec. thru the SAXParser 'validator', avoiding the build of a huge temporary XML file!
After testing this approach, its looks like the SAXParser 'validator' (sp.parse) is expecting only (1) StringBufferInputStream as input,and after opening, reading and closing just (1) of the returned StringBufferInputStream objects, the validator wants to close up operations!
Where i have the "<<<<<" you can see where i'm calling the the object.method that creates the 'pipe>XML' records 'sb.createxml' and will be returning many occurances of the StringBufferInputStream object, where (1) StringBufferInputStream object represents (1) 'pipe>XML' record!
So what i'm wondering, is if there is a form of 'inputStream' class that can be loaded and processed at the same time! ie instead of requiring that the 'inputStream' object be loaded in it's entirety, before going to validation?
Or if there is another XML 'validator' that can validate 1 XML record at a time, without requiring that the entire XML file be built first?
1. ---------------------------------class: (SX2) ---------------------------------------------------------------------------------------------------------
import ............
public class SX2
public static void main(String[] args) throws Exception
MyDefaultHandler dh = new MyDefaultHandler();
SX1 sx = new SX1();
SAXParser sp = sx.getParser(args[0]);
stbuf1 sb = new stbuf1();
sp.parse(sb.createxml(args[1]),dh); <<<<<< createxml( ) see <<<<<<< below
class MyDefaultHandler extends DefaultHandler {
public int errcnt;
"SX2.java" 87 lines, 2563 characters
2. ----------------------------------class: (stbuf1) method: (createxml) ----------------------------------------------------------------------------
public stbuf1 () { }
public StringBufferInputStream createxml( String inputFile ) <<<<<< createxml(
BufferedReader textReader = null;
if ( (inputFile == null) || (inputFile.length() <= 1) )
{ throw new NullPointerException("Delimiter Input File does not exist");
String ele = new String();
try {
ele = new String();
textReader = new BufferedReader(new FileReader(inputFile));
String line = null; String SEPARATOR = "\\|"; String sToken = null;
String hdr1=("<?xml version=#1.0# encoding=#UTF-8#?>"); hdr1=hdr1.replace('#','"');
String hdr2=("<hlp_data>");
String hdr3=("</hlp_data>");
String hdr4=("<"+TABLE_NAME+">");
String hdr5=("</"+TABLE_NAME+">");
while ( (line = textReader.readLine()) != null )
String[] sa = line.split(SEPARATOR);
String elel = new String();
for (int i = 0; i < NUM_COLS; i++)
if (i>(sa.length-1)) { sToken = new String(); } else { sToken = sa; }
elel="<"+_columnNames[i]+">"+sToken+"</"+_columnNames[i]+">";
if (i==0) {
ele=ele.concat(hdr1);ele=ele.concat(hdr2);ele=ele.concat(hdr4);ele=ele.concat(elel);
else
if (i==NUM_COLS - 1) {
ele=ele.concat(elel);ele=ele.concat(hdr5);ele=ele.concat(hdr3);
else {
ele=ele.concat(elel);
textReader.close();
catch (IOException e) {
return (new StringBufferInputStream(ele));
public static void main( String args[] ) {
stbuf1 genxml_obj = new stbuf1 ();
String ptxt=new String(args[0]);
genxml_obj.createxml(ptxt); }}

Well,i think you can use the streaming API for xml processing provided by weblogic.It is pull model,not push model like SAX.with it,you can select the events you want without having to react to every event,and you can filter the events out.
Sun also provide such streaming API for xml processing,and i got an very simple introduction about it on the Chinese Sun developer site.but i couldn't find any other infomation about it elsewhere! If you have such materials,please send to my email:[email protected],and if I have it,i will be sure to post the links here.hope it helps more or less:)
@smile@

I need help using a SAX parser

Hello,
I have a class that goes out to the web and retrieves an xml document w/o ever writing it to disk. I like to parse that object using SAX and a class that extends HandlerBase. Can any one show me how to parse an xml document that lives in memory rather than in a file? I've found many examples, but all of them assume you are reading from a file system. Any help is greatly appreciated.
Here is the jist of my code :
// Class 1 makes a request to another server based on some variable data. I've created a messenger object that handles all of the communications and returns the data in a DataInputStream
XMLMessage xml = new XMLMessage();
xml.createRequest(args[0],args[1],args[2]);
XMLMessenger messenger = new XMLMessenger(xml.getDoc());
DataInputStream dis = messenger.transferDocument();
ResponseObj resp = new ResponseObj();
resp.read(dis);
System.out.println(resp.getvalue1() + "*" + resp.getvalue2()+ "*");
// Class 2 is the ResponseObj and I want to use something similar to this read method, but
// I can't get it to work with a data stream, instead of a string that represents a file.
public void read(String filename) throws java.lang.Exception {
Class c = Class.forName("com.ibm.xml.parser.SAXDriver");
     org.xml.sax.Parser parser = (org.xml.sax.Parser)c.newInstance();
     parser.setDocumentHandler(this);
     parser.parse(filename);

Thanks for you help. I've modified my read() method to work like this :
org.xml.sax.Parser parser = new com.ibm.xml.parser.SAXDriver();
parser.setDocumentHandler(this);
InputSource is = new InputSource(dis);
parser.parse(is);
This makes sense, but I'm still not getting any thing returned from the startElement(),characters(), or endElement() methods. It reports no errors, it just doesn't happen. Do you have any suggestions on how to debug this? I'm stumped, but really need to get this working.

I've a problem with errors message in the sax parser

Hello,
I'm quite new to Java.
I'm trying to create a SAX parser for my XML file, with a XML schema.
When my pars run a XML file, the following mistakes go out:
1)org.sax.SAXParseException:s4s-elt-must-match: the content of 'restriction' must match (annotation?,.....)
2)org.sax.SAXParseException: src-ct.0.1:Complex Type Definition Rappresentation Error for type..... Element 'sequence' is invalid,misplaced or occurs to often
but I don't understand where I must go in the schema to correct.
Many thanks!

Hi,
Perhaps it would help if you post your XML file.

How to stop the sax parser with parsing

hi,
I'm parsing some large xml-files with jaxp sax.
To do it I use a contenthandler that goes through the file.
Wat I want now is that when I have found the nodes that I need that parsing of the xml stops.
I tried to do it with detecting a certain endElement and putting there a return, but it will not work, parsing continues till the end of the file (see code underneath).
Does anyone can say what I'm doing wrong,
thanks, Hans
code:
public void endElement(String namespaceURI,
String sName,
String qName
) throws SAXException {
if (qName.equals("file")) {
return;
} // end of if ()
}

You have to return from that method anyway, so a return statement is not going to tell the parser to stop. You could throw a SAXException, but be prepared to catch that in the code that called the parser, and be prepared to treat it differently from SAXExceptions that indicate problems.

Using the HTML Parser as a filter

I have the need to take an HTML file, filter it so that the SOURCE attribute on all of the IMG tags are modified, and then write the filtered file out. This seems pretty straight forward, but I can't seem to figure out how to get the Swing HTML parser to do what I want.
If I had some way to parse the file into some structure, and then be able to take that structure and "unparse" it back into a file I would be fine. This assumes that I'd be able to override the handling of the IMG tag (or I guess all of the simple tags) on the parser side so that I'd be able to replace one of the attributes with something that's more meaningful for my purpose.
I know this is not so difficult, I just can't see how to do it. Any help? Thanks in advance.
Sander Smith

If the problem is that simple, I'd use java.util.regex classes(Pattern and Matcher) and could write the program in an hour.

Unknown entity(Acirc;) included by the SAX parser instead of in UNIX

I have a piece of code that parses html files.I had given in one of the html.The output of this parsing is another xml file.In the output xml file i see a Acirc; instead of on Unix.
On windows the same code doesnt generate this character in the output xml file.
Pls suggest a fix if anyone has faced this problem before.

I have found in the XML1.0 recomendations
------------ include ----------------------
2.11 End-of-Line Handling
XML parsed entities are often stored in computer files which, for editing convenience, are organized into lines. These lines are typically separated by some combination of the characters carriage-return (#xD) and line-feed (#xA).
To simplify the tasks of applications, wherever an external parsed entity or the literal entity value of an internal parsed entity contains either the literal two-character sequence "#xD#xA" or a standalone literal #xD, an XML processor must pass to the application the single character #xA. (This behavior can conveniently be produced by normalizing all line breaks to #xA on input, before parsing.)
----------------- end of include ----------------------
According to this the parser's behavior is 100% correct.
Unfortunately I have no control on what appear in the CDATA section. Thus, before processing the entry (CRC calculation) the content of the CDATA should be normilized, i.e. all new-lines should be substitued with '#xA'. Until now I haven't found a better solution.

Using the SAX Parser

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