My Fellow Midrange Geeks and Geekettes:
One of the features I've put into my project is the ability to
incorporate a user-specified WHERE clause into the generated WHERE
clauses of my queries, in order to filter the records accessed.
But if the user uses this feature to insert garbage into the WHERE
clause (e.g., "WHERE FOO = 'BAR'," with no FOO field in the file), it
results in a series of bad JDBC calls that crashes JDBC and the JVM,
requiring the user to sign off and sign back on.
Space offset X'00000000' or X'00008000300149F0' is outside current limitI'd like to be able to catch the bad query before this happens. Is there
for object <jobname> <user> <jobnum>.
a way to do this?
It seems, running it in the debugger, that when the query gets executed
rs1 = jdbc_ExecQryCS( conn : %UCS2('Select * '(jdbc_ExecQryCS being a UCS2-parameter [so we can process Unicode
+ ' from ' + %TRIM(QUALTBL) + ' WHERE ((')
+ %TRIM(WHERECLAUSE1) + %UCS2(') ') + %TRIM(ORWHERE1)
+ %UCS2(') AND (') + %UCS2(%TRIM(ADDLWHERE))
+ %UCS2(') ORDER BY ' + ORDERBY));
keyfields], scrollable result set version of jdbc_ExecQry), RS1 comes
back as null (0), and an RNX0301,
Java exception received when calling Java method.appears in the joblog, with
Cause . . . . . : RPG procedure JDBC_EXECQ in program AQUESTVIEW/JDBCR4QVNow assuming I recognize, and respond to, the null result set I get, am
received Java exception "java.sql.SQLException: [SQL0206] Column FOO not in
specified tables." when calling method "executeQuery" with signature
"(Ljava.lang.String;)Ljava.sql.ResultSet;" in class "java.sql.Statement".
I going to have to insert an ExceptionClear somewhere, in order to keep
the next call from crashing the JVM? For reference, here is the
P JDBC_ExecQryCS B export(Not too different from Scott's original jdbc_ExecQry.)
D JDBC_ExecQryCS PI like(ResultSet)
D conn like(Connection) const
D sql 32767C varying const options(*varsize)
D stmt s like(Statement)
D temp s like(ResultSet)
D rs s like(ResultSet)
stmt = createStatement2( conn: 1005: 1007); // 1007 read-only
temp = executeQuery( stmt : new_StringC(sql));
This mailing list archive is Copyright 1997-2015 by MIDRANGE dot COM and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available here. If you have questions about this, please contact