Column types on a flat file

Question

I am using a flat file as a target and when I define column types as anything other then string I get the following error on execution
000 : null : com.sunopsis.jdbc.driver.file.a.i
com.sunopsis.jdbc.driver.file.a.i
     at com.sunopsis.jdbc.driver.file.a.d.setDate(d.java)
     at com.sunopsis.sql.SnpsQuery.updateExecStatement(SnpsQuery.java)
     at com.sunopsis.sql.SnpsQuery.addBatch(SnpsQuery.java)
     at com.sunopsis.dwg.dbobj.SnpSessTaskSql.execCollOrders(SnpSessTaskSql.java)
     at com.sunopsis.dwg.dbobj.SnpSessTaskSql.treatTaskTrt(SnpSessTaskSql.java)
     at com.sunopsis.dwg.dbobj.SnpSessTaskSqlI.treatTaskTrt(SnpSessTaskSqlI.java)
     at com.sunopsis.dwg.dbobj.SnpSessTaskSql.treatTask(SnpSessTaskSql.java)
     at com.sunopsis.dwg.dbobj.SnpSessStep.treatSessStep(SnpSessStep.java)

Answer 1

hi lpantuso ,
suppose u want to transfer file data like
xxxx 1111 12-01-2005
yyyy 2222 12-03-2007
zzzz 3333 01-05-2007
to another blank file so you have do folloowing steps
craete file data server for individual data server suppose you r developing application on ur desk to so create single file dat server in topology manager with proper jdbc url and driver name as
Jdbc driver as : com.sunopsis.jdbc.driver.file.FileDriver choose from drop down menu
and add url as: jdbc:snps:dbfile
now for each different folder create physical schema with the schema and work schema name as the location of the folder .
click on context tab add the proper logical schema name
come to designer window
Create individual model for each physical schema (for each folder I can say)
Use the proper logical schema name (while you'll select technology as file all the logical schema related to the technology wil be displayed just select ur logical schema)
than create individual datastore for each file (you can create two data store at max for each file).
assuming you r using delimited file.
while reversing existing source file you will have all the columns of the file
change data type and size of the fields.
For the target File datastore file should be there wid blank structure so add column wid proper data type, for second field use numeric and for date use string as datatype .Size must be appropriate for the target file otherwise you'll have warning at designing time.
create an interface
use Global context with "Sunopsis memory engine" as staging area other than target.
then map the source and target file
at Flow tab
choose
LKM File to SQl for source area
NO LKM is there for Staging area
IKM SQL to file append for target (If these are not automatically updated)
Then try to execute,it's working
Note : If you want to transfer table data to a file then for date type data you have to check following things
1) at the time of mapping of date type from table to file interface use
to_char(<SourceTableNameAlias> . <columnName>) instead of
<SourceTableNameAlias> . <columnName>
and date type data field of the target file should be String type.............