Limitation of the Parameter APT_OSL_PARAM_ESC_SQUOTE on Plugins on Parallel Canvas.

Symptom

Case -1
Consider a job with plugin stage (E.g. DB2API) and transformer (operator) stages and with job parameter TIMESTAMPVAL with single-quoted string having space within.
For example, TIMESTAMPVAL='2011-10-21 04:43:52.154081'.
If transformer stage uses this job parameter then the following error occurs:
Transformer_32: Unrecognized argument: 04:43:52.154081 [argvcheck/argvcheck.C:3779]

Since '2011-10-21 04:43:52.154081' is not escaped, the string that is passed to transformer stage is 2011-10-21 04:43:52.154081.
This happens because there is a space within the timestamp and the transformer sees these as two arguments and results in an Unrecognized argument error for the part after space.

If the APT_OSL_PARAM_ESC_SQUOTE parameter is set, then the transformer stages work well but fails in plugin stage with the following errors:

DB2_UDB_API_0: When processing argument -outlinkprops When processing output link property list: {
PREFETCH=50,
USERSQL='SELECT c1,c2 FROM test24726 where c2 < \2011\-10\-21 is not a valid property list: Expected "," or "}", got: <eof>
Encountered <eof> while seeking end of proplist

Case -2
Consider a job with job parameter WHERECond with value
WHERECond =WHERE ETL_TS = '2012-02-02 00:00:00.000000'

With the transformer stage's column output as "select * from xmeta.mytab":WHERECond, and if the column output is consumed by plugin stage for executing this SQL, as seen in case-1 the transformer stage sees the Unrecognized argument for space separated argument.

The following error occurs -
TX_BuildSQL: Unrecognized argument: 00:00:00.000000

If APT_OSL_PARAM_ESC_SQUOTE is set still error will be seen and following error is thrown
TX_BuildSQL: Unrecognized argument: 00:00:00.000000\