Calling oracle function in OMB script

Question

Hi
Can anyone please tell me how can i get the returned value of an oracle function in OMB script. or how can i get the value into OMB variable and use it.
Basically i want to set the properties of OWB mapping via OMB script.
Following OMB code sets the max error limit of a mapping.
OMBALTER MAPPING 'MAP_DATA' SET PROPERTIES (MAXIMUM_NUMBER_OF_ERRORS) VALUES ('100')
i dont want to hard code the value 100 rather i want this value to be returned from a function.
If it is not possible then plz tell me how can i set MAXIMUM_NUMBER_OF_ERRORS property of OWB mapping via sql or pl/sql.
Any type of clue will be highly appreciated.
Best Regards

Answer 1

Here is my bare-bones OMB SQL Library to allow you to do pure SQL calls from within OMB+. All I have ever used it for is to run queries, so I don't have a library procedure for calling a function, however if your function is SQL-callable (e.g. select my_func() from dual) then it would work. Either that or you'll want to augment this library to build a procedure that will call and return the results from a java preparedStatement. It's something I've been meaning to do, but haven't got around to it yet.
All you should need to do is save this as it's own tcl file and then source it at the top of your own script, or embed it into your script.
EDIT: Here is a page with some sample code on using java.sql.CallableStatement to call a Pl/SQL procedure from Java which should certainly do the trick for you in conjunction with the basic session control in my library.
http://www.exampledepot.com/egs/java.sql/CallProcedure.html
Cheers,
Mike
package require java
#file omb_sql_library.tcl
proc oracleConnect { serverName databaseName portNumber username password } {
   # import required classes
   java::import java.sql.Connection
   java::import java.sql.DriverManager
   java::import java.sql.ResultSet
   java::import java.sql.SQLWarning
   java::import java.sql.Statement
   java::import java.sql.CallableStatement
   java::import java.sql.ResultSetMetaData
   java::import java.sql.DatabaseMetaData
   java::import java.sql.Types
   java::import oracle.jdbc.OracleDatabaseMetaData
   # load database driver .
   java::call Class forName oracle.jdbc.OracleDriver
   # set the connection url.
   append url jdbc:oracle:thin
   append url :
   append url $username
   append url /
   append url $password
   append url "@"
   append url $serverName
   append url :
   append url $portNumber
   append url :
   append url $databaseName
   set oraConnection [ java::call DriverManager getConnection $url ]
   set oraDatabaseMetaData [ $oraConnection getMetaData ]
   set oraDatabaseVersion [ $oraDatabaseMetaData getDatabaseProductVersion ]
   puts "Connected to: $url"
   puts "$oraDatabaseVersion"
   return $oraConnection
proc oracleDisconnect { oraConnect } {
  $oraConnect close
proc oraJDBCType { oraType } {
  #translation of JDBC types as defined in XOPEN interface
  set rv "NUMBER"
  switch $oraType {
     "0" {set rv "NULL"}
     "1" {set rv "CHAR"}
     "2" {set rv "NUMBER"}
     "3" {set rv "DECIMAL"}
     "4" {set rv "INTEGER"}
     "5" {set rv "SMALLINT"}
     "6" {set rv "FLOAT"}
     "7" {set rv "REAL"}
     "8" {set rv "DOUBLE"}
     "12" {set rv "VARCHAR"}
     "16" {set rv "BOOLEAN"}
     "91" {set rv "DATE"}
     "92" {set rv "TIME"}
     "93" {set rv "TIMESTAMP"}
     default {set rv "OBJECT"}
  return $rv
proc oracleQuery { oraConnect oraQuery } {
   set oraStatement [ $oraConnect createStatement ]
   set oraResults [ $oraStatement executeQuery $oraQuery ]
   # The following metadata dump is not required, but will be a helpfull sort of thing
   # if ever want to really build an abstraction layer
   set oraResultsMetaData [ $oraResults getMetaData ]
   set columnCount        [ $oraResultsMetaData getColumnCount ]
   set i 1
   #puts "ResultSet Metadata:"
   while { $i <= $columnCount} {
      set fname [ $oraResultsMetaData getColumnName $i]
      set ftype [oraJDBCType [ $oraResultsMetaData getColumnType $i]]
      #puts "Output Field $i Name: $fname Type: $ftype"
      incr i
   # end of metadata dump
   return $oraResults
# SAMPLE CODE to run a quick query and dump the results. #
#set oraConn [ oracleConnect myserver orcl 1555 scott tiger ]
#set oraRs [ oracleQuery $oraConn "select name, count(*) numlines from user_source group by name" ]
#for each row in the result set
#while {[$oraRs next]} {
  #grab the field values
#  set procName [$oraRs getString name]
#  set procCount [$oraRs getInt numlines]
#  puts "Program unit $procName comprises $procCount lines"
#$oraRs close
#oracleDisconnect $oraConnEdited by: zeppo on Nov 25, 2008 7:19 AM