Conversion/Type Cast of sys.XMLType to NUMBER and VARCHAR2

How do we typecast or convert a variable of the type sys.XMLType to NUMBER and VARCHAR2?
For e.g. I have a variable :-
v_STATE sys.XMLType
I want to convert it to either of the type NUMBER or VARCHAR2.

How do we typecast or convert a variable of the type sys.XMLType to NUMBER and VARCHAR2?
Your question is too vague to give a relevant answer.
Typecasting doesn't make sense in this situation, XMLType is an opaque datatype, it's not like converting VARCHAR2 to NUMBER (or vice versa).
Do you mean serializing the XML document, or extracting atomic node values, or something else ?
Depending on your requirement, you may want to look for XMLSerialize() or XMLCast() functions.
And on a side note, don't always expect people to search for your previous threads to find some useful information, such as a db version...

Similar Messages

Group by Perfromance issue with Number and Varchar2

Hi All,
I got a question on performance on GROUP BY clause.
Group by (Number) and Group by (Varchar2) --> In these 2 versions of Group by will oracle takes into consideration for the data types in the GROUP BY Clause as a performance issue.
I.E. Select sum(sal) from emp group by deptno and Select sum(sal) from emp group by job.
In the first group by we have number and second we got varchar2. So oracle will take the data types also into consideration for performance in the Group by clause.
(Pls dont consider the amount of data in the tables ).
Appreciate your response,
Thanks,
Madhu K.

You are asking which way is more efficient?
if someone ask to do a group by using a varchar column. oracle has no other way to do it but by the columns that the developer asks for...
Amiel

ORA-30625 sys.xmltype

every time when I run function GET_PURCHASEORDER_VALUE Oracle rises error ora-30625 in line*. I work in Oracle release 9.0.1.3.0. what shuld I do? help me. please.
create or replace function GET_PURCHASEORDER_VALUE(PURCHASEORDER in sys.XMLTYPE)
return number is
LINEITEMS sys.XMLTYPE;
LINEITEM sys.XMLTYPE;
COST number;
QUANTITY number;
TOTAL number := 0;
I binary_integer := 1;
begin
LINEITEMS := PURCHASEORDER.extract('//LineItem'); *
loop
LINEITEM := LINEITEMS.extract('/LineItem['||I||']');
exit when LINEITEM is null;
COST := LINEITEM.extract('/LineItem/Part/@UnitPrice').getNumberVal();
QUANTITY := LINEITEM.extract('/LineItem/Part/@Quantity').getNumberVal();
TOTAL := TOTAL + (COST * QUANTITY );
I := I + 1;
end loop;
return TOTAL;
end GET_PURCHASEORDER_VALUE;
ORA-30625 method dispatch on NULL SELF argument is disallowed

9.1.0.3 has limited XPATH support. Can you upgrade to 9.2.0.2?
Can you try extractValue instead of extract?

Why we use type casting ' ?='

Hii Team
sample code for fetching the input value from search view which is connected to btq1order contextnode
DATA : lr_qs TYPE REF TO cl_crm_bol_dquery_service,
lr_qr TYPE REF TO if_bol_bo_col,
lr_qs ?= me->typed_context->btq1order->collection_wrapper->get_current( ).
lr_qr = lr_qs->get_query_result( ).
I am new to SAP CRM .while understanding the code i got stuck in one problem that ,
1.what is the main purpose behind
TYPE CASTING ie; '?='
2.what happens if we write ?= becoz if we write '=' instead of '?=' the system thows an error.
3.when to use this operator ?= and when we cannot use ?
It is used almost every where in BOL coding .please help me by giving complete explaination with an example if possible.
Thanks in Advance

Hi Abhishek,
Please check returning parameter type for get_current_dquery() method. In case returning type is mutually convertible then you don't have to use type casting.
But in case where you are taking results in some other type where results are compatible but with different structure then you use type casting.
best example would be cl_crm_bol_entity and if_bol_bo_property_access. Here property access is an interface to class and hence we use type casting.
Please refer to:
type casting
You can find more documentation on internet if you search for type casting.
Regards,
BJ

Want to insert a XSL file's data into a column of type SYS.XMLTYPE??

Hello Friends
I want to insert a XSL file's data into a column of a table of type SYS.XMLTYPE. Following is the XSL which i want to add into a table please help in.....
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
     xmlns:fn="http://www.w3.org/2005/xpath-functions">
     <xsl:output method="html" encoding="UTF-8" />
     <xsl:template match="clinical_study">
     <xsl:variable name="status">
          <xsl:apply-templates select='overall_status' />
     </xsl:variable>
<html>
<head>
<title>Summary</title>
<link href="merckcancer.css" rel="stylesheet" type="text/css" />
</head>
<body>
     <div id="trialtop" class="trialtop">
          <div id="trialtophead" class="trialtophead">
               <H1>Summary</H1>
          </div>

     <div id="trialmiddle" class="trialmiddle">
                         <span class="trialtitle1"><xsl:apply-templates select='brief_title'/></span>
               <span class="tealbold">Official Title: </span><xsl:apply-templates select='official_title' />
               <span class="tealbold" title="ClinicalTrials.gov Identifier">NCT Id: </span><xsl:apply-templates select='//nct_id'/>
<span class="tealbold">Conditions: </span><xsl:for-each select="//condition[position()!=last()]"><xsl:value-of select="normalize-space(.)" /><xsl:text>, </xsl:text></xsl:for-each>
<xsl:for-each select="//condition[position()=last()]"><xsl:value-of select="normalize-space(.)" /></xsl:for-each>
<span class="tealbold">Phase: </span><xsl:apply-templates select='phase' />
<span class="tealbold">Status: </span><xsl:value-of select="$status" />
<span class="tealbold">Interventions: </span><xsl:for-each select="//intervention[position()!=last()]"><xsl:value-of select="normalize-space(intervention_type)" />: <xsl:value-of select="normalize-space(intervention_name)" /><xsl:text>, </xsl:text></xsl:for-each><xsl:for-each select="//intervention[position()=last()]"><xsl:value-of select="normalize-space(intervention_type)" />: <xsl:value-of select="normalize-space(intervention_name)" /></xsl:for-each>
<xsl:apply-templates select='eligibility'><xsl:with-param name="type">short</xsl:with-param></xsl:apply-templates>
</div>
</div>
<div id="detail" class="detail">
     <div id="detailtophead" class="detailtophead">
          <H1>Details</H1>
     </div>


<div id="detailmiddle" class="detailmiddle">
<span class="trialtitle2">Trial Description:</span>
     <span class="trialtitle4"><xsl:apply-templates select='brief_summary/textblock' /></span>
     <span class="trialtitle1">Eligibility: </span>
          <xsl:apply-templates select='eligibility'><xsl:with-param name="type">long</xsl:with-param></xsl:apply-templates>
</div>
</div>
<div id="enroll" class="enroll">
<div id="enrolltophead" class="enrolltophead">
<H1>Enrollment</H1>
</div>


<div id="enrollmiddle" class="enrollmiddle">
<xsl:choose>
                                   <xsl:when test="$status = 'Recruiting'">
     This study has participating centers in a number of locations.
     To take the next step in learning more about participating in this clinical study please call one of these trial contacts.<p/>
     The trial contacts will know this study as <span class="tealbold"><xsl:apply-templates select='//org_study_id'/></span>
     or may know the study under the ClinicalTrials.gov identifier <span class="tealbold"><xsl:apply-templates select='//nct_id'/></span>.<p/>
     <p/>
                                   <xsl:apply-templates select='overall_contact'/>
                                   <xsl:for-each select="location">
                                        <xsl:call-template name='location'/><p/>
                                   </xsl:for-each>
                                   </xsl:when>
                                   <xsl:otherwise>
     This study is not currently Recruiting, it is <xsl:value-of select="$status" />.
                                   </xsl:otherwise>
                                   </xsl:choose>
</div>
</div>
<div id="credit" class="credit">
<div id="credittophead" class="credittophead">
<H1>Credits</H1>
</div>


<div id="creditmiddle" class="creditmiddle">
                              Information about this trial has been gathered from ClinicalTrials.gov. Please see
                              <a>
                                   <xsl:attribute name="href" >
                                        /ctcpub/redirect.jsp?redirectURL=http://ClinicalTrials.gov
                                   </xsl:attribute>
                                   ClinicalTrials.gov
                              </a> for more complete information.<p/>
                              <xsl:apply-templates select='required_header/download_date'/><p/>
                              <a>
                                   <xsl:attribute name="href" >
                                        /ctcpub/redirect.jsp?redirectURL=<xsl:apply-templates select='required_header/url'/>
                                   </xsl:attribute>
                                   <xsl:apply-templates select='required_header/link_text'/>
                              </a> <p/>
                              This trial data was last updated on <xsl:apply-templates select='//lastchanged_date'/><p/>
</div>
</div>
</body>
</html>
</xsl:template>
<xsl:template match="brief_title">
          <span class="trialtitle"><xsl:value-of select="normalize-space(.)" /></span>
     </xsl:template>
     <xsl:template match="official_title">
          <span class="tealbold">Official Title: </span>     <xsl:value-of select="normalize-space(.)" />
     </xsl:template>
     <xsl:template match="phase">
          <span class="tealbold">Phase: </span> <xsl:value-of select="normalize-space(.)" />
     </xsl:template>
     <xsl:template match="overall_status">
          <xsl:value-of select="normalize-space(.)" />
     </xsl:template>
     <xsl:template match="eligibility">
          <xsl:param name="type" />
          <xsl:choose>
               <xsl:when test="$type = 'short'">
                    <span class="tealbold">Eligibility: </span> <xsl:call-template name="ages">
                         <xsl:with-param name="min"><xsl:value-of select="normalize-space(minimum_age)" /></xsl:with-param>
                         <xsl:with-param name="max"><xsl:value-of select="normalize-space(maximum_age)" /></xsl:with-param>
                    </xsl:call-template>, <xsl:apply-templates select='gender' />
               </xsl:when>
               <xsl:when test="$type = 'long'">
                    <span class="trialtitle">Eligibility: </span>
                         <span class="tealbold">Age: </span> <xsl:call-template name="ages">
                                   <xsl:with-param name="min"><xsl:value-of select="normalize-space(minimum_age)" /></xsl:with-param>
                                   <xsl:with-param name="max"><xsl:value-of select="normalize-space(maximum_age)" /></xsl:with-param>
                              </xsl:call-template>
                         <span class="tealbold">Genders Eligible for Study: </span> <xsl:apply-templates select='gender' />
                         <xsl:text>
                         </xsl:text>
                         <span class="tealbold">Eligibility Criteria: </span>
<xsl:apply-templates select='criteria/textblock' />
               </xsl:when>
               <xsl:otherwise></xsl:otherwise>
          </xsl:choose>
     </xsl:template>
     <xsl:template match="gender">
          <xsl:choose>
               <xsl:when test=". = 'Both'">Male or Female</xsl:when>
               <xsl:otherwise>
                    <xsl:value-of select="normalize-space(.)" />
               </xsl:otherwise>
          </xsl:choose>
     </xsl:template>
     <xsl:template match="overall_contact">
     <span class="trialtitle">Central Contact: </span>
          <xsl:apply-templates select='./first_name' /><xsl:text> </xsl:text>
          <xsl:apply-templates select='./middle_name' /><xsl:text> </xsl:text>
          <xsl:apply-templates select='./last_name' />
          <xsl:apply-templates select='./phone' />
          <xsl:apply-templates select='./email' />
     </xsl:template>
     <xsl:template name="ages">
          <xsl:param name="min" />
          <xsl:param name="max" />
          <xsl:choose>
               <xsl:when test="($min != '') and ($max != '')">Between <xsl:value-of select="$min" /> and <xsl:value-of select="$max" /></xsl:when>
               <xsl:when test="($min != '') and ($max = '')"><xsl:value-of select="$min" /> and Above</xsl:when>
               <xsl:when test="($min = '') and ($max != '')">Under <xsl:value-of select="$max" /></xsl:when>
               <xsl:otherwise></xsl:otherwise>
          </xsl:choose>
     </xsl:template>
     <xsl:template match="brief_summary/textblock">
          <span class="trialtitle">Trial Description: </span> <xsl:call-template name="substitute">
<xsl:with-param name="string" select="." />
</xsl:call-template>
     </xsl:template>
     <xsl:template name="location">
          <span class="trialtitle"><xsl:apply-templates select='.//country' /><xsl:apply-templates select='.//state' /></span>
          <xsl:apply-templates select='./facility/name' /><xsl:apply-templates select='.//city' /><xsl:apply-templates select='.//zip' /><xsl:apply-templates select='.//status' />
          <xsl:apply-templates select='./contact' />
     </xsl:template>
     <xsl:template match="contact">
          <span class="tealbold">Site Contact: </span>
          <xsl:apply-templates select='first_name' />
          <xsl:apply-templates select='middle_name' />
          <xsl:apply-templates select='last_name' />
          <xsl:apply-templates select='phone' />
          <xsl:apply-templates select='email' />
     </xsl:template>
     <xsl:template match="criteria/textblock">
          <xsl:call-template name="substitute">
     <xsl:with-param name="string" select="." />
     </xsl:call-template>
</xsl:template>
     <xsl:template match="facility/name"><xsl:value-of select="normalize-space(.)" /></xsl:template>
     <xsl:template match="country"><xsl:value-of select="normalize-space(.)" /></xsl:template>
     <xsl:template match="city">, <xsl:value-of select="normalize-space(.)" /></xsl:template>
     <xsl:template match="zip">, <xsl:value-of select="normalize-space(.)" /></xsl:template>
     <xsl:template match="state">, <xsl:value-of select="normalize-space(.)" /></xsl:template>
     <xsl:template match="status">, <xsl:value-of select="normalize-space(.)" /></xsl:template>
     <xsl:template match="first_name"><xsl:value-of select="normalize-space(.)" /> </xsl:template>
     <xsl:template match="middle_name"><xsl:value-of select="normalize-space(.)" /> </xsl:template>
     <xsl:template match="last_name"><xsl:value-of select="normalize-space(.)" /></xsl:template>
     <xsl:template match="phone">Phone: <xsl:value-of select="normalize-space(.)" />
</xsl:template>
     <xsl:template match="email"><xsl:if test='. != ""'>EMail: <xsl:value-of select="normalize-space(.)" />
</xsl:if></xsl:template>
<xsl:template name="substitute">
<xsl:param name="string" />
<xsl:param name="from" select="'
'" />
<xsl:param name="to">
</xsl:param>
<xsl:choose>
<xsl:when test="contains($string, $from)">
<xsl:value-of select="substring-before($string, $from)" />
<xsl:copy-of select="$to" />
<xsl:call-template name="substitute">
<xsl:with-param name="string"
select="substring-after($string, $from)" />
<xsl:with-param name="from" select="$from" />
<xsl:with-param name="to" select="$to" />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$string" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
Please do as early as possible..
thanks in advance

Hi I tried with below querry but iam getting an error message?
SQL> Insert into temp_clob_tab
2 SELECT XMLELEMENT("soap:Envelope",
3 XMLATTRIBUTES ('http://www.w3.org/2001/XMLSchema-instance' as "xmlns:xsi",
4 'http://www.w3.org/2001/XMLSchema' as "xmlns:xsd",
5 'http://schemas.xmlsoap.org/soap/envelope/' as "xmlns:soap"),
6 XMLELEMENT("soap:Body"),XMLELEMENT("AddListing",
7 XMLATTRIBUTES ('http://www.christielites.com' as "xmlns" )),
8 XMLELEMENT ( "SCOMCODE",a.SCOMCODE), XMLELEMENT ( "SLOCCODE",SLOCCODE),
9 XMLELEMENT ( "DSTART",DSTART),XMLELEMENT ( "DEND",DEND),XMLELEMENT ( "SECODE",SECODE),
10 XMLELEMENT ( "IAVAIL",IAVAIL),XMLELEMENT ("IOWNED",IOWNED),XMLELEMENT ("SPOSTTRANS",SPOSTTRANS))
11 from LiteExchangeAvailablity a;
SELECT XMLELEMENT("soap:Envelope",
ERROR at line 2:
ORA-00932: inconsistent datatypes: expected CLOB got -

How to use type cast change string to number(dbl)?can it work?

how to use type cast change string to number(dbl)?can it work?

Do you want to Type Cast (function in the Advanced >> Data Manipulation palette) or Convert (functions in the String >> String/Number Conversion palette)?
2 simple examples:
"1" cast as I8 = 49 or 31 hex.
"1" converted to decimal = 1.
"20" cast as I16 = 12848 or 3230 hex.
"20" converted to decimal = 20.
Note that type casting a string to an integer results in a byte by byte conversion to the ASCII values.
32 hex is an ASCII "2" and 30 hex is an ASCII "0" so "20" cast as I16 becomes 3230 hex.
When type casting a string to a double, the string must conform the the IEEE 32 bit floating point representation, which is typically not easy to enter from the keyboard.
See tha attached LabView 6.1 example.
Attachments:
TypeCastAndConvert.vi ‏34 KB

Latitude & Longitude string to number through type cast

In my application i am saving the data ( 78°20.54 E )coming from gps in tdms format in the pc.
There are many such strings to save , so as this takes more memory to save the data in pc i want to type case in floating and save .
I am typecasting But i am not able to retrive the same data 78°20.54 E while again type casting .
Please see the attached vi.
Regards
Naga
Attachments:
TYPE CAST.vi ‏8 KB

Nagaa,
You might want to better explain exactly what you want.
Do you want "78°20.54" to be 78.3423 (I'm assuming after the ° is minutes)? Then have E be positive and W be negative?
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

ORA-21700 error using sys.xmlType in Oracle 9.2

I'm working on an application which uses the XMLType column in some of its database tables. When we started, we were using Oracle 9.0.1, and this test code works (which emulates how we have to, in some occasions, populate the XMLType column).
However, we installed Oracle 9.2.0.3 on the same machine and created database instances using this version of Oracle. We didn't upgrade the original 9.0.1 installation (which still exists side-by-side). When we run this code, we get the following exception...
java.sql.SQLException: ORA-21700: object does not exist or is marked for delete
ORA-06512: at "SYS.XMLTYPE", line 0
ORA-06512: at line 1
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:180)
at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:208)
at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:543)
at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1451)
at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch(TTC7Protocol.java:862)
at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:1846)
at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1771)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2361)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:422)
at com.edh.oracle.TransactionTester.testClob(TransactionTester.java:134)
at com.edh.oracle.TransactionTester.main(TransactionTester.java:251)
This exception occurs after we've written the data to a Clob and are attempting to call createXML to update the column.
Is there anything additional I need to do to get this working in Oracle 9.2 again? Thanks.
Code is:
* TransactionTester.java
* Created on 11 October 2002, 14:08
package com.edh.oracle;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
* @author ehillman
public class TransactionTester {
private static String ORACLE_URL = "jdbc:oracle:thin:@wallaby:7012:CT2";
/** Creates a new instance of TransactionTester */
public TransactionTester() throws SQLException {
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
private void createTables(Connection conn) throws SQLException {
String createText = "create table SillyData (XML_VALUE XMLTYPE, XML_STORAGE CLOB)";
Statement stmt = conn.createStatement();
stmt.execute(createText);
System.out.println("Tables created");
private void dropTables(Connection conn) throws SQLException {
String dropText = "drop table SillyData ";
Statement stmt = conn.createStatement();
stmt.execute(dropText);
System.out.println("Tables dropped");
private void testClob() throws SQLException, java.io.FileNotFoundException,
java.io.IOException {
System.out.println("testClob - START");
Connection conn = DriverManager.getConnection(ORACLE_URL,
"ehillman", "ehillman");
System.out.println("connection received");
createTables(conn);
try {
System.out.println("Loading MyFn.xml");
java.io.FileReader inputReader = new java.io.FileReader(
"C:\\Documents and Settings\\ehillman\\.netbeans\\edh test\\oracle jdbc\\com\\edh\\oracle\\MyFn.xml");
conn.setAutoCommit(false);
Statement stmt2 = conn.createStatement();
stmt2.execute("insert into SillyData (XML_STORAGE) values (EMPTY_CLOB())");
System.out.println("empty row inserted");
stmt2 = conn.createStatement();
ResultSet rs = stmt2.executeQuery("select XML_STORAGE from SillyData for update");
System.out.println("Empty CLOB retireved");
rs.next();
java.sql.Clob clobValue = rs.getClob(1);
oracle.sql.CLOB oraClob = (oracle.sql.CLOB) clobValue;
System.out.println("casted");
java.io.Writer writer = oraClob.getCharacterOutputStream();
char[] buffer = new char[ oraClob.getChunkSize() ];
for (int charsRead = inputReader.read(buffer); charsRead > -1; charsRead = inputReader.read(buffer)) {
writer.write(buffer, 0, charsRead);
writer.close();
System.out.println("data written to Clob");
PreparedStatement pState = conn.prepareStatement(
"update SillyData set XML_VALUE = sys.XMLType.createXML(?)");
pState.setClob(1, clobValue);
int result = pState.executeUpdate();
System.out.println("executeQuery returned " + result);
} finally {
dropTables(conn);
conn.close();
System.out.println("connection closed");
System.out.println("testClob - END");
* @param args the command line arguments
public static void main(String[] args) {
try {
TransactionTester tst = new TransactionTester();
tst.testClob();
} catch (Exception ex) {
ex.printStackTrace();

I've found this....
http://download-west.oracle.com/docs/cd/B10501_01/appdev.920/a96620/xdb05obj.htm#1032058
Does this mean that, for a table to use an XMLType column, it has to have a single schema definition for every row in the table?
This won't fit for what we're doing.... that is, our table stores XML data for each row, but they are all different types of XML... they don't have the same structure,they don't use the same schema.
Please let me know if I'm missing something

I need To Understand the "Type Cast Function"

Dears,
I need To Understand How the "Type Cast Function" Work, and if you can Give me an Example it will be Apperciated
BR
Ahmed

In its simplest explanation Type Cast allows you to reinterpret a series of bytes. The numeric conversion functions convert from one data type to another and essentially do the same thing that Type Cast does, albeit with just numbers. Type Cast allows you to extend this to convert one data type to another, beyond just numbers. Thus, you could convert an array of 2 U8 values into a single U16 number by using Type Cast like this:
or you could reinterpret an array of lots of U8 values into an array of U16 values like this:
How you use it is entirely up to you, but it is an extremely powerful function. What are you trying to do?
Attachments:
Example_VI.png ‏6 KB
Example2_VI.png ‏11 KB

Help needed in data type casting

I have a java program which will receive data and its type in the String format. During program execution, the data in the String data has to be converted into the respective data type and assigned to a variable of that data type so that it could be used in the program. Programmer may not know the type of data that the value has to be converted into.
I really got struck up with this. This is a RMI application and one process node is sending the data to another node in the String format and the type of data it should get converted into so that it can be converted into the respective type and used for computation.
Can you understand what I am asking for ....if you can pls help and it is highly appreciated

I dont know whether i ahve expressed it correctly
look at this code
dataPacket sendtoNode = send.senDatatoNode(inputReq);
String recnodnum = sendtoNode.nodeNum;
String recvarnum = sendtoNode.varNum;
String recvartype = sendtoNode.dataType;
String recvalvalue     = sendtoNode.dataVal;
int num;     int type;
double result;
// here in this case the result variable type is double
if (recvartype.equals("int")){
          type = 1;
     result = Integer.parseInt(recvalvalue); will pose problem
     else
     if (recvartype.equals("double")){
          type = 2;
          result = Double.parseDouble(recvalvalue);
     else
     if(recvartype.equals("float")){
          type =3;
          result = Float.parseFloat(recvalvalue); will pose problem
     else
     if(recvartype.equals("Boolean")){
          if ((recvalvalue.equals("true")) || (recvalvalue.equals("TRUE")))
          type = 4;
          result = Boolean.parseBoolean(recvalvalue); will pose problem
     else
     if(recvartype.equals("char")){
          type = 5;
          result = (char)recvalvalue; will pose problem
else
if(recvartype.equals("String")){
     type = 6;
          result = recvalvalue; will pose problem
     else
     if(recvartype.equals("byte")){
          type = 7;
          result = Byte.parseByte(recvalvalue); will pose problem
     else
     if(recvartype.equals("long")){
          type = 8;
          result = Long.parseLong(recvalvalue); will pose problem
     else
     if(recvartype.equals("short")){
          type = 9;
          result = Short.parseShort(recvalvalue); will pose problem
     //forvarval varvalue = new forvarval();
     //varvalue.forvarval(recvartype, recvalvalue);
// this has to be done after sorting the problem of type casting string result = recvalvalue;
//result = value; //<this will surely give me a problem as i m assigning string to double>??
send.host(result);
System.out.println("result received and the result is " +recvalvalue );
now i need to assign the converted string in to a variable and use in the compuation ..thts where the challenge n not in teh conversion process...

Splitting and type casting huge string into arrays

Hello,
I'm developing an application which is supposed to read measurement files. Files contain I16 and SGL data which is type casted into string. I16 data is data from analog input and SGL is from CAN-bus data in channel form. CAN and analog data is recorded using same scan rate.
For example, if we have 6 analog channels and 2 CAN channels string will be (A represents analog and C represents CAN):
A1 A2 A3 A4 A5 A6 C1 C2 A1 A2 A3 A4 A5 A6 C1 C2 A1 A2 .... and so on
Anyway, I have problems reading this data fast enough into arrays. Most obvious solution to me was to use shift registers and split string in for loop. I created a for loop with two inner for loops. Number of scans to read from string is wired to N terminal of the outermost loop. Shift register is initialized with string read from file.
First of the inner loops reads analog input data. Number of analog channels is wired to its N terminal. It's using split string to read 2 bytes at a time and then type casts data to I16. Rest of the string is wired to shift register. When every I16 channel from scan is read, rest of the string is passed to shift register of the second for loop.
Second loop is for reading CAN channels. It's similar to first loop except data is read 4 bytes at a time and type casted to SGL. When every CAN channel from scan is read, rest of the string is passed to shift register of the outermost loop. Outputs of type cast functions are tunneled out of loops to produce 2D arrays.
This way reading about 500 KB of data can take for example tens of seconds depending on PC and number of channels. That's way too long as we want to read several megabytes at a time.
I created also an example with one inner loop and all data is type casted to I16. That is extremely fast when compared to two inner loops!
Then I also made a test with two inner loops where I replaced shift register and split string with string subset. That's also faster than two inner loops + shift register, but still not fast enough. Any improvement ideas are highly appreciated. Shift register example attached (LV 7.1)
Thanks in advance,
Jakke Palonen
Attachments:
String to I16 and SGL arrays.vi ‏39 KB

OK, there is clearly room for improvement. I did some timing and my two above suggestions are already about 100x faster than yours. A few teeaks led to a version that is now over 500x faster than the original code.
A few timings on my rather slow computer (1GHz PIII Laptop) are shown on the front panel. For example with 10000 scans (~160kB data as 6+2) my new fastest version (Reshape II) takes 14 ms versus the original 7200ms! It can do 100000 scans (1.6MB data) in under 200 ms and 1000000 scans (15MB data) in under 2 seconds.
I am sure the code could be further improved. I recommend the Reshape II algoritm. It is fastest and can deal with variable channel counts. Modify as needed.
Attached is a LabVIEW 7.1 version of the benchmarking code, containing all algorithms. I have verified that all algorithms produce the same result (with the limitation that the cluster version only works for 6*I16+2*SGL data, of course). Remember that the reshape function is extremely efficient, because it does not move the data in memory. I have some ideas for further improvements, but this should get you going.
Message Edited by altenbach on 08-05-2005 03:06 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
StringI16SGLCastingTimer.png ‏48 KB
StringtoI16andSGLArraysMODTimer.vi ‏120 KB

Notification with user defined type results in PLS-00306: wrong number..

I created a user defined type TLogMessage:
CREATE OR REPLACE TYPE TLogMessage AS OBJECT
module VARCHAR2(4000),
severity NUMBER,
message VARCHAR2(4000)
I also created a multi-consumer queue using this type as payload.
My callback procedure in the package PK_SYST_LOGMESSAGE is defined as follows:
     PROCEDURE DefaultLoggerCallback(
          context          RAW,
          reginfo          SYS.AQ$_REG_INFO,
          descr          SYS.AQ$_DESCRIPTOR,
          payload          RAW,
          payload1     NUMBER
Finally, I registered the callback procedure as follows:
          DBMS_AQADM.ADD_SUBSCRIBER(
               queue_name      => QUEUE_NAME,
               subscriber      => SYS.AQ$_AGENT(
                                        name => 'default_logger',
                                        address => NULL,
                                        protocol => NULL
          DBMS_AQ.REGISTER(
               SYS.AQ$_REG_INFO_LIST(
                    SYS.AQ$_REG_INFO(
                         name          => QUEUE_NAME || ':default_logger',
                         namespace     => DBMS_AQ.NAMESPACE_AQ,
                         callback     => 'plsql://MTDX.PK_SYST_LOGMESSAGE.DefaultLoggerCallback',
                         context          => HEXTORAW('FF')
               1
However, when I put a message in the queue using this procedure:
     PROCEDURE LogMessage(
          pModule          VARCHAR2,
          pSeverity     NUMBER,
          pMessage     VARCHAR2
     IS
          vMessage               TLogMessage;
          vEnqueueOptions          DBMS_AQ.ENQUEUE_OPTIONS_T;
          vMsgProperties          DBMS_AQ.MESSAGE_PROPERTIES_T;
          vMessageHandle          RAW(16);
     BEGIN
          vMessage := TLogMessage(module => pModule, severity => pSeverity, message => pMessage);
          vEnqueueOptions.visibility := DBMS_AQ.IMMEDIATE;
          vMsgProperties.correlation := pModule;
          vMsgProperties.priority := -pSeverity;
          -- Enqueue the message to all subscribers
          DBMS_AQ.ENQUEUE(
               queue_name               => QUEUE_NAME,
               enqueue_options          => vEnqueueOptions,
               message_properties     => vMsgProperties,
               payload                    => vMessage,
               msgid                    => vMessageHandle
     EXCEPTION
          WHEN no_subscribers THEN
               -- No subscribers on the queue; ignore
               NULL;
     END;
I can see the message in the queue, by querying the queue view. I can also see that Oracle tried to call my callback procedure, because in the trace file I see the following:
*** 2009-02-13 08:52:25.000
*** ACTION NAME:() 2009-02-13 08:52:24.984
*** MODULE NAME:() 2009-02-13 08:52:24.984
*** SERVICE NAME:(SYS$USERS) 2009-02-13 08:52:24.984
*** SESSION ID:(609.3387) 2009-02-13 08:52:24.984
Error in PLSQL notification of msgid:4F7962FEDD3B41FA8D9538F0B38FCDD1
Queue :"MTDX"."LOGMESSAGE_QUEUE"
Consumer Name :DEFAULT_LOGGER
PLSQL function :MTDX.PK_SYST_LOGMESSAGE.DefaultLoggerCallback
: Exception Occured, Error msg:
ORA-00604: Fout opgetreden bij recursief SQL-niveau 2.
ORA-06550: Regel 1, kolom 7:
PLS-00306: Onjuist aantal of type argumenten in aanroep naar 'DEFAULTLOGGERCALLBACK'..
ORA-06550: Regel 1, kolom 7:
PL/SQL: Statement ignored.
So.. how many parameters does Oracle expect, and of what type? Is there any way to find out? What is wrong with my code?

Ok, found it... I had defined the last parameter of the callback procedure as 'payload1' (that is: 'payload-ONE') instead of 'payloadl' ('payload-ELL'). It all works like a charm now.
What a way to waste two whole days!

Conversion from ascii to 16 bit inteeger number

Hi, I recieve data from message based measurement device via a serial port. I have used VISA functions write, read and so on. So I have read a string of charaters (8 bits). My problem is, that in this output message are text messages in char and 16 bit inteeger data numbers too. I can split these two parts from the string, but I don't know how can I convert data read like 8 bit char to 16 bit inteeger number. So my problem is how can I convert ascii character to a 16 bit inteeger. Thank you for your help.

You will find the all the functions you need in this palette(attached picture). The typecast function should work. Type cast the part of the string containing data in U16 to a U16 array. The byte swap function may also be needed.
Message Edited by t06afre on 03-23-2009 11:59 AM
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)
Attachments:
sample.PNG ‏21 KB

ORA-03113 when inserting a CLOB value casted as an XMLType from a SELECT query into a table

I have a table that contains a CLOB column with pseudo-XML in it. I want to keep this data in an XMLType column so that I can leverage some of Oracle's built-in XML features to parse it more easily.
The source table is defined as:
CREATE TABLE "TSS_SRM_CBEBRE_LOGS_V"
( "INCIDENT_ID" NUMBER,
"EVENT_TYPE" VARCHAR2(100 BYTE) NOT NULL ENABLE,
"EVENT_KEY" VARCHAR2(100 BYTE),
"CREATION_DATE" TIMESTAMP (6) NOT NULL ENABLE,
"CREATED_BY" VARCHAR2(100 BYTE) NOT NULL ENABLE,
"LOG_MSG" CLOB);
The target (for testing this problem) table is defined as:
CREATE TABLE "TESTME"
( "LOG_MSG" "XMLTYPE"
My query is:
insert /*+ APPEND */ into testme ("LOG_MSG")
select XMLTYPE.createXML("LOG_MSG") as LOG_MSG from "TSS_SRM_CBEBRE_LOGS_V" b;
In SQL*Developer, my error is: Error report:
SQL Error: No more data to read from socket
In SQL*PLUS and Toad, my error is:
ORA-03113: end-of-file on communication channel
Process ID: 13903
Session ID: 414 Serial number: 32739

By pseudo-XML, I mean that it doesn't have the xml root node. The content structure is similar to the following:
<a attr1="1" attr2="2" />
<b attr1="3" attr2="4" />
<c attr1="5">
<e attr1="6" attr2="7" />
<e attr1="8" attr2="9" />
<e attr1="10" attr2="11" />
</c>
<d attr1="12" />
OK. Those are XML fragments then.
I'm surprised you say the query alone works.
We cannot build an XMLType instance using the default constructor or createXML() method when the content is composed of fragments.
AFAIK the only option is to use XMLParse() with CONTENT option :
SQL> select xmltype.createxml(LOG_MSG) from TSS_SRM_CBEBRE_LOGS_V;
ERROR:
ORA-31011: XML parsing failed
ORA-19202: Error occurred in XML processing
LPX-00245: extra data after end of document
Error at line 2
ORA-06512: at "SYS.XMLTYPE", line 5
no rows selected
SQL> select xmltype(LOG_MSG) from TSS_SRM_CBEBRE_LOGS_V;
ERROR:
ORA-31011: XML parsing failed
ORA-19202: Error occurred in XML processing
LPX-00245: extra data after end of document
Error at line 2
ORA-06512: at "SYS.XMLTYPE", line 272
ORA-06512: at line 1
no rows selected
SQL> select xmlparse(content LOG_MSG) from TSS_SRM_CBEBRE_LOGS_V;
XMLPARSE(CONTENTLOG_MSG)
<a attr1="1" attr2="2" />
<b attr1="3" attr2="4" />
<c attr1="5">
<e attr1="6" a
Anyway, you'll eventually hit this :
SQL> insert into testme (LOG_MSG)
2 select XMLparse(content LOG_MSG)
3 from TSS_SRM_CBEBRE_LOGS_V;
insert into testme (LOG_MSG)
ERROR at line 1:
ORA-19010: Cannot insert XML fragments

Importing XML data into sys.XMLType - encoding problem

Hi,
I'm using "modplsql Gateway" to upload XML file with encoding "windows-1250" with some regional characters in database table.
The table definition:
CREATE TABLE NAHRAJ_DATA (
NAME VARCHAR(128) UNIQUE NOT NULL,
MIME_TYPE VARCHAR(128),
DOC_SIZE NUMBER,
DAD_CHARSET VARCHAR(128),
LAST_UPDATED DATE,
CONTENT_TYPE VARCHAR(128),
CONTENT LONG RAW,
BLOB_CONTENT BLOB
The file was uploaded correct.
My database have
NLS_CHARACTERSET EE8MSWIN1250
NLS_NCHAR_CHARACTERSET AL16UTF16
After upload, I convert data from hex(blob) to dec and with function chr() to char. BLOB -> CLOB.
Next I create sys.XMLType from CLOB. With this progression works all in order.
In other system where are
NLS_CHARACTERSET AL32UTF8
NLS_NCHAR_CHARACTERSET AL16UTF16
BLOB_CONTENT column(table NAHRAJ_DATA) starts with "FF FE FF FE" in HEX before my XML data. Exactly convert is OK, bud if I can create sys.XMLType I get this
ORA-31011: XML parsing failed ORA-19202: Error occurred in XML processing
LPX-00200: could not convert from encoding UTF-8 to UCS2 Error at line 1
ORA-06512: at "SYS.XMLTYPE", line 0
ORA-06512: at line 1
I haven't any idea what's wrong.
Whats mean the HEX code in BLOB_CONTENT column after upload?
Thangs
Lukas

Please post your question in XMLDB forum

Conversion/Type Cast of sys.XMLType to NUMBER and VARCHAR2

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