Newbie: Parsing XML data

I have bunch of XML files and I want to develop a keyword based search engine which parses those XML files.
Do you have any idea which is the best way to do the job? I mean on Linux? Should I use PHP? JAVA? Python??
Please let me know. I am very new to everything in this domain.
Thanks
Dexter

i am getting runtime error
java.lang.NullPointerException
at Employee.setdata(Employee.java)
at Employee.actionPerformed(Employee.java)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(Unknow
n Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

Similar Messages

Script for parsing xml data and inserting in DB

Thank you for reading.
I have the following example XML in an XML file. I need to write a script that can insert this data into an Oracle table. The table does not have primary keys. The data just needs to be inserted.
I do not have xsd file in this scenario. Please suggest how to modify Method 1 https://community.oracle.com/thread/1115266?tstart=0 mentioned so that I can call the XML mentioned below and insert into a table
Method 1
Create or replace procedure parse_xml is
l_bfile   BFILE;
l_clob    CLOB;
l_parser dbms_xmlparser.Parser;
l_doc     dbms_xmldom.DOMDocument;
l_nl      dbms_xmldom.DOMNodeList;
l_n       dbms_xmldom.DOMNode;
l_file      dbms_xmldom.DOMNodeList;
l_filen       dbms_xmldom.DOMNode;
lv_value VARCHAR2(1000);
   l_ch      dbms_xmldom.DOMNode;
l_partname varchar2(100);
l_filename varchar2(1000);
l_temp    VARCHAR2(1000);
TYPE tab_type IS TABLE OF tab_software_parts%ROWTYPE;
t_tab tab_type := tab_type();
BEGIN
l_bfile := BFileName('DIR1', 'SoftwareParts.xml');
dbms_lob.createtemporary(l_clob, cache=>FALSE);
dbms_lob.open(l_bfile, dbms_lob.lob_readonly);
dbms_lob.loadFromFile(dest_lob => l_clob,    src_lob => l_bfile,    amount   => dbms_lob.getLength(l_bfile));
dbms_lob.close(l_bfile);
dbms_session.set_nls('NLS_DATE_FORMAT','''DD-MON-YYYY''');
l_parser := dbms_xmlparser.newParser;
dbms_xmlparser.parseClob(l_parser, l_clob);
l_doc := dbms_xmlparser.getDocument(l_parser);
    dbms_lob.freetemporary(l_clob);
dbms_xmlparser.freeParser(l_parser);
l_nl := dbms_xslprocessor.selectNodes(dbms_xmldom.makeNode(l_doc),'/PartDetails/Part');
    FOR cur_emp IN 0 .. dbms_xmldom.getLength(l_nl) - 1 LOOP
    l_n := dbms_xmldom.item(l_nl, cur_emp);
    t_tab.extend;
    dbms_xslprocessor.valueOf(l_n,'Name/text()',l_partname);
    t_tab(t_tab.last).partname := l_partname;
    l_file := dbms_xslprocessor.selectNodes(l_n,'Files/FileName');
    FOR cur_ch IN 0 .. dbms_xmldom.getLength(l_file) - 1 LOOP
      l_ch := dbms_xmldom.item(l_file, cur_ch);
      lv_value := dbms_xmldom.getnodevalue(dbms_xmldom.getfirstchild(l_ch));
      if t_tab(t_tab.last).partname is null then t_tab(t_tab.last).partname := l_partname; end if;
      t_tab(t_tab.last).filename := lv_value;
    t_tab.extend;
   END LOOP;
   END LOOP;
    t_tab.delete(t_tab.last);
FOR cur_emp IN t_tab.first .. t_tab.last LOOP
if t_tab(cur_emp).partname is not null and t_tab(cur_emp).filename is not null then
    INSERT INTO tab_software_parts
    VALUES
    (t_tab(cur_emp).partname, t_tab(cur_emp).filename);
    end if;
END LOOP;
COMMIT;
dbms_xmldom.freeDocument(l_doc);
EXCEPTION
WHEN OTHERS THEN
    dbms_lob.freetemporary(l_clob);
    dbms_xmlparser.freeParser(l_parser);
    dbms_xmldom.freeDocument(l_doc);
END;
<TWObject className="TWObject">
<array size="240">
    <item>
      <variable type="QuestionDetail">
        <questionId type="String"><![CDATA[30]]></questionId>
        <questionType type="questionType"><![CDATA[COUNTRY]]></questionType>
        <country type="String"><![CDATA[GB]]></country>
        <questionText type="String"><![CDATA[Please indicate]]></questionText>
        <optionType type="String"><![CDATA[RadioButton]]></optionType>
        <answerOptions type="String[]">
          <item><![CDATA[Yes]]></item>
          <item><![CDATA[No]]></item>
        </answerOptions>
        <ruleId type="String"><![CDATA[CRP_GB001]]></ruleId>
        <parentQuestionId type="String"></parentQuestionId>
        <parentQuestionResp type="String"></parentQuestionResp>
      </variable>
    </item>
    <item>
      <variable type="QuestionDetail">
        <questionId type="String"><![CDATA[40]]></questionId>
        <questionType type="questionType"><![CDATA[COUNTRY]]></questionType>
        <country type="String"><![CDATA[DE]]></country>
        <questionText type="String"><![CDATA[Please indicate]]></questionText>
        <optionType type="String"><![CDATA[RadioButton]]></optionType>
        <answerOptions type="String[]">
          <item><![CDATA[Yes]]></item>
          <item><![CDATA[No]]></item>
        </answerOptions>
        <ruleId type="String"><![CDATA[CRP_Q0001]]></ruleId>
        <parentQuestionId type="String"></parentQuestionId>
        <parentQuestionResp type="String"></parentQuestionResp>
      </variable>
    </item>
</array>
</TWObject>

Reposted as
Script to parse XML data into Oracle DB

How do you store parsed XML data in an array

Hi, i am trying to complete a small program which implements the SAX parser to parse an XML file. My problem is that i am writing a custom class to store the parsed data into an array, and then make the array available to the main program via a simple method which returns the array. I know this must be very simple to do, but i seem to have developed a mental block with this part of the program. I can parse the data and print all the elements to the screen, but i just cant figure out how to store all the data elements into the array. I will post the class which is supposed to do this, and ask anyone out there if they know what i'm doing wrong, and also, if there is a more effeicient way of achieving this ( i expect there definitely is!! but i have never used the SAX parser before and am getting confused by the API docs on it!!) Any help very much appreciated.
Here is my attempt at coding the class to handle the parsed XML data
class Sink extends org.xml.sax.helpers.DefaultHandler
     implements org.xml.sax.ContentHandler{
Customer[] customers = new Customer[20];
     int count = 1;
     int x = 0;
     int tagCount = 0;
     String name;
String custID;
     String username;
     String address;
     String phoneNum;
public void startElement(String uri, String localName, String rawName, final org.xml.sax.Attributes attributes)throws org.xml.sax.SAXException{
//count the number of <name> tags in the XML file
     if(rawName.equals("name")){
          tagCount++;
public void characters(char[] ch, int start, int len){
//get the current string
     String text = new String(ch, start, len);
     String text1 = text.trim();
//there are 5 elements for each customer found in the XML file so when the count reaches 6
// i reset this to 1
     if(count == 6){
     count = count - 5;
     if(text1.length()>0 && count == 1){
          name = text1;
          System.out.println(name);
          }else{
     if(text1.length()>0 && count == 2){
          custID = text1;
          System.out.println(custID);
               }else{
               if(text1.length()>0 && count == 3){
               username = text1;
               System.out.println(username);
               }else{
                    if(text1.length()>0 && count == 4){
                    address = text1;
                    System.out.println(address);
                    }else{
                    if(text1.length()>0 && count == 5){
                         phoneNum = text1;
                         System.out.println(phoneNum);
                         //add data to the customer array
                         customers[x] = new Customer(name, custID, username, address, phoneNum);
// increment the array index counter
                    x = x+1;
                    }//end of if
                    }//end else
                    }//end else
               }//end else
          }//end else
}//end of characters method
public void endDocument(){
     System.out.println("There are " + tagCount +
     " <name> elements.");
}//end of class Sink
Before the end of this class i also need to make the array available to the calling program!!
Any help would be much appreciated
Thanks
Iain

Ok, yer going about this all the wrong way. You shouldn't have to maintain a count of all the elements. Basically you are locking yourself into the XML tags not only all being there but are assuming they are all in the same order. What you should do is in your characters() method, put all of the characters into a string buffer. Then, in endElement() (which you dont use btw, you should) you grab the information that is in the string buffer and store it into your Customer object depending on what the tagName is.
Also, you should probably use a List to store all the Customer objects and not an single array, it's more dynamic and you arent locked into a set number of Customers.
I wont do it all for you, but I'll give you a good outline to use.
public class CustomerHandler extends DefaultHandler {
    private java.util.List customerList; // List of Customer objects
    private java.util.StringBuffer buf;   // StringBuffer to store the string of characters between the start and end tags
    private Customer customer; // Customer object that is initialized with each entry.
    public CustomerHandler() {
        customerList = new java.util.ArrayList();   // Initialize the List
        buf = new java.util.StringBuffer();   // Initialize the string buffer
    // Make your customer list available to other classes
    public java.util.List getCustomerList() {
        return customerList;
    public void startElement(String nsURI, String sName, String tagName, Attributes attributes) throws SAXException {
        // Clear the String Buffer
        // If the tagName is "Customer" then create a new Customer object
    public void characters(char[] ch, int start, int length) {
        // append the characters into the string buffer
    public void endElement(String nsURI, String sName, String tagName) throws SAXException {
        // If the tagName is "Customer" add your customer object to the List
        // Place the data from the String Buffer into a String
        // Depending on the tagName, call the appropriate set method on your customer object
}

How to parse xml data into java component

hi
everybody.
i am new with XML, and i am trying to parse xml data into a java application.
can anybody guide me how to do it.
the following is my file.
//MyLogin.java
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
class MyLogin extends JFrame implements ActionListener
     JFrame loginframe;
     JLabel labelname;
     JLabel labelpassword;
     JTextField textname;
     JPasswordField textpassword;
     JButton okbutton;
     String name = "";
     FileOutputStream out;
     PrintStream p;
     Date date;
     GregorianCalendar gcal;
     GridBagLayout gl;
     GridBagConstraints gbc;
     public MyLogin()
          loginframe = new JFrame("Login");
          gl = new GridBagLayout();
          gbc = new GridBagConstraints();
          labelname = new JLabel("User");
          labelpassword = new JLabel("Password");
          textname = new JTextField("",9);
          textpassword = new JPasswordField(5);
          okbutton = new JButton("OK");
          gbc.anchor = GridBagConstraints.NORTHWEST;
          gbc.gridx = 1;
          gbc.gridy = 5;
          gl.setConstraints(labelname,gbc);
          gbc.anchor = GridBagConstraints.NORTHWEST;
          gbc.gridx = 2;
          gbc.gridy = 5;
          gl.setConstraints(textname,gbc);
          gbc.anchor = GridBagConstraints.NORTHWEST;
          gbc.gridx = 1;
          gbc.gridy = 10;
          gl.setConstraints(labelpassword,gbc);
          gbc.anchor = GridBagConstraints.NORTHWEST;
          gbc.gridx = 2;
          gbc.gridy = 10;
          gl.setConstraints(textpassword,gbc);
          gbc.anchor = GridBagConstraints.NORTHWEST;
          gbc.gridx = 1;
          gbc.gridy = 15;
          gl.setConstraints(okbutton,gbc);
          Container contentpane = getContentPane();
          loginframe.setContentPane(contentpane);
          contentpane.setLayout(gl);
          contentpane.add(labelname);
          contentpane.add(labelpassword);
          contentpane.add(textname);
          contentpane.add(textpassword);
          contentpane.add(okbutton);
          okbutton.addActionListener(this);
          loginframe.setSize(300,300);
          loginframe.setVisible(true);
     public static void main(String a[])
          new MyLogin();
     public void reset()
          textname.setText("");
          textpassword.setText("");
     public void run()
          try
               String text = textname.getText();
               String blank="";
               if(text.equals(blank))
                  System.out.println("First Enter a UserName");
               else
                    if(text != blank)
                         date = new Date();
                         gcal = new GregorianCalendar();
                         gcal.setTime(date);
                         out = new FileOutputStream("log.txt",true);
                         p = new PrintStream( out );
                         name = textname.getText();
                         String entry = "UserName:- " + name + " Logged in:- " + gcal.get(Calendar.HOUR) + ":" + gcal.get(Calendar.MINUTE) + " Date:- " + gcal.get(Calendar.DATE) + "/" + gcal.get(Calendar.MONTH) + "/" + gcal.get(Calendar.YEAR);
                         p.println(entry);
                         System.out.println("Record Saved");
                         reset();
                         p.close();
          catch (IOException e)
               System.err.println("Error writing to file");
     public void actionPerformed(ActionEvent ae)
          String str = ae.getActionCommand();
          if(str.equals("OK"))
               run();
               //loginframe.setDefaultCloseOperation(DISPOSE_ON_CLOSE);
}

hi, thanks for ur reply.
i visited that url, i was able to know much about xml.
so now my requirement is DOM.
but i dont know how to code in my existing file.
means i want to know what to link all my textfield to xml file.
can u please help me out. i am confused.
waiting for ur reply

How to parsing xml data in sql statement??

Hi friends, I have a table which contain column as clob ,stores in xml format, for example my column contain xml data like this
<Employees xmlns="http://TargetNamespace.com/read_emp">
   <C1>106</C1>
   <C2>Harish</C2>
   <C3>1998-05-12</C3>
   <C4>HR</C4>
   <C5>1600</C5>
   <C6>10</C6>
</Employees>
Then how to extract the data in above xml column data using SQL statement...

Duplicate post
How to parsing xml data in sql statement??

Parsing XML data stored as CLOB in DB and save attribute values in table

Hello,
I have a CLOB column in table that is holding XML data as follows,
<banners>
<banner-image id="0">
<type>BANNER</type>
<local-path>http.gif</local-path>
<click-through-url>www</click-through-url>
<make>Acura</make>
</banner-image>
<banner-image id="1">
<type>BANNER</type>
<local-path>http.gif</local-path>
<click-through-url>gfrty</click-through-url>
<make>BMW</make>
</banner-image>
</banners>
Now I need to parse thru the above XML data and pull the attribute values to store in another table as follows,
BANNER_IMAGE_ID | TYPE | LOCAL_PATH | CLICK_URL | MAKE
0 | BANNER | http.gif | www | Acura
1 | BANNER | http.gif | gfrty | BMW
And XML data doesn't always end up with 2 rows in this table....some times it may be 3 or 4 as well. It is just that in this example it ended up with 2 rows.
So, I would appreciate if someone can help me find a generic way of doing this,
Thank you in advance,
Madhu.

This is not a reply.. sorry.
I took have a similar problem only..
can you pls help me
XML structure.
<PODetails>
<POHeader>
<CurrencyID>INR</CurrencyID>
<ExchangeRate>1</ExchangeRate>
<RefNo>0080000110</RefNo>
<VendorID>1200</VendorID>
<TransDate>2006-12-20</TransDate>
<DocRelationshipId>PURCHASE</DocRelationshipId>
<LocationID>0000102327</LocationID>
</POHeader>
<POItemDetails>
<ItemID>ARSH1332</ItemID>
<Size>L HS</Size>
<Quality>Q1</Quality>
<CustPO>rush order</CustPO>
<UOM>PC</UOM>
<Quantity>3.000</Quantity>
<PriceValue>2509.5</PriceValue>
<TaxAmount>0.00</TaxAmount>
</POItemDetails>
<POItemDetails>
<ItemID>ARSH1332</ItemID>
<Size>M HS</Size>
<Quality>Q1</Quality>
<CustPO>rush order</CustPO>
<UOM>PC</UOM>
<Quantity>2.000</Quantity>
<PriceValue>1673</PriceValue>
<TaxAmount>0.00</TaxAmount>
</POItemDetails>
<POItemDetails>
<ItemID>ARSH1556</ItemID>
<Size>39FS</Size>
<Quality>Q1</Quality>
<CustPO>rush order</CustPO>
<UOM>PC</UOM>
<Quantity>1.000</Quantity>
<PriceValue>836.5</PriceValue>
<TaxAmount>0.00</TaxAmount>
</POItemDetails>
</PODetails>
The DB is ORACLE 9i
This is stored in a XML table of type XMLTYPE.
THIS I USED THE .extract function to get the values of the nodes.
POHeader details are working fine. But when i get the POItemDetails i am getting 'ARSH1332ARSH1332ARSH1556' when i issue the command
select a.extract('/PODetails/POItemDetails/ItemID/text()').getStringVal() ItemID
FROM xmltable a
WHERE a.existsnode('//POItemDetails/ItemID')=1
Pls Help..
Regds,
Santhoshkumar.G.

Not able to Parse XML data in Sun Application Server 8.2

Iam not able to parse the xml data in sun application server,this is working fine in tomcat and oracle server.
Please go thru the code , thanks in advance.This is used in ajax.
function processStateChange() {
if (req.readyState == 4) { // Complete
if (req.status == 200) { // OK response
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          setMessage(message.childNodes[0].nodeValue);
//document.getElementById("theResponse").innerHTML = req.responseText;
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Use Notepad. Drag and drop in notepad.
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Can't parse XML data

I'm receiving an XML document over a TCP socket, I then instantiate an instance of DOMParser and attempt to parse the data. Here's the exception:
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     at org.apache.xerces.framework.XMLParser.reportError(XMLParser.java:1213)
     at org.apache.xerces.framework.XMLDocumentScanner.reportFatalXMLError(XMLDocumentScanner.java:588)
     at org.apache.xerces.framework.XMLDocumentScanner$TrailingMiscDispatcher.dispatch(XMLDocumentScanner.java:1461)
     at org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)
     at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1098)
Here's the relevant snippet(s) of source (there is code to write out the socket, but I didn't include that)
Socket socket = new Socket( hostIP, hostPort );
OutputStream outStream = socket.getOutputStream();
InputStream inStream = socket.getInputStream();
DataInputStream dataInStream = new DataInputStream( inStream );
byte[] inByteArray = new byte[ 2048 ];
int length = dataInStream.read( inByteArray );
InputStream byteData = new ByteArrayInputStream( inByteArray );
try
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       dp.parse( new InputSource( byteData ));
       Document doc = dp.getDocument();
catch ( Exception e )
        e.printStackTrace();
        System.exit( 1 );
}Is there a different way to do this? I even tried creating a new String based on the length read from the socket, minus one. The parser then saw that the final angle bracket of my root element was missing, so it doesn't seem to be an encoding issue.
Any help would be appreciated.
Jeff

An invalid XML character (Unicode: 0x0)The XML is corrupt.
...saw that the final angle bracket of my rootelement was missing,
After you subtracted one from the length - that would
suggest that not subtracting one would be a good
idea.Yep. That was a test to verify that the data was in tact and not null terminated. To doubly check, I took an Ethereal trace of the wire, and there was no null. If I convert the byte[] to a String, everything is fine. Unfortunately,
there wasn't a parser method that took the XML document as a String.
>
I would suppose that the real problem here has
nothing to do with XML nor DOM but rather that you
are not correctly retreiving the data from the socket.Data is fine from the socket, I just had to implement my own getAttribute() and getElementContent, and use brute force. I just thought using an already written parser made more sense.
Thanks for the reply.

How to Parse XML data directly from context variables in webdynpro

Hello,
   I have two requirements:
1) I have a context variable which has string value.
   I want to write the this value into a flat file.
   How do I do this in WebDynpro.
   Any sample code for this.
2) In Webdynpro, I want to parse and process the XML data directly from a string context variable which
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Thanks and Regards,
Anupama.

Anupama,
Here is some link which talks about unpacking xml and converting to HTML.
<a href="http://help.sap.com/saphelp_nw04/helpdata/en/eb/3dfb402eb5f76fe10000000a1550b0/content.htm">http://help.sap.com/saphelp_nw04/helpdata/en/eb/3dfb402eb5f76fe10000000a1550b0/content.htm</a>
I have done something like this in portal development and not in webdynpro.But in principle it should work very where.

Parsing xml data into oracle database

Oracle ACEs,
We got a requirement that needs to load xml data into oracle db. Is it possible to load xml data into oracle db using built-in package. Is Oracle provides one ?
Our database version is Oracle 9i.
Your help in this regard is highly appreciated.
Many Thanks.

Check this out.
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96612/d_xmlsav.htm#1008593

Parse xml data and insert into database

Hi Friends,
I have an xml document which needs to be parsed and the data need to be inserted into an oracle database table.
Please tell me which will be the easiest and optimal way of doing this.
Thanks,
Achayan

Take a look at the JDOM xml parsing library - google for JDOM download or something.
This will allow you to build an object representation of the XML doc, from which you can then extract the data.
J

Parsing XML data into MySQL database

I need to parse data from an xml document rsiding on amother
server into a mysql database residing on my server, so that I can
pull data into a php site.
Any help? Mybe there's a commercial script or something?
I would also need to update the data daily
Thanks!!

Check this out.
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96612/d_xmlsav.htm#1008593

Newbie: Read XML data in Java

Hello
I am very new to Java and XML and I have some basic questions.
I am creating some mailing lists in an XML tag where I have a identifier tag and then the e-mails as child tags. Something like this:
<mail-list id="1" name="friends">
<to-list id=1>
<receiver id="1" address="[email protected]"/>
<receiver id="2" address="[email protected]"/>
</tolist>
</mail-list>
I would like to create a method that receives the name of the mail list (ex:friends) and returns all the e-mail addresses that it contains.
How can I import data from a DOM to Java and return the text from a specific element or attribute?
Thanks

I would like to create a method that receives the name of the mail list (ex:friends) and returns all the e-mail addresses that it contains.You will need to traverse DOM document structure based on the filter //mail-list[@name="friends"] and then obtain each receiver id through nodelist object.
How can I import data from a DOM to Java and return the text from a specific element or attribute?http://java.sun.com/webservices/jaxp/dist/1.1/docs/tutorial/TOC.html : This link has it all + contains examples to explain concepts.

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Thanks,

if this is a web-based app, you can use server-side script to save your xml to a file.

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