Spring-iBatis-Oracle data access

Question

Hi all,
I've just spent hours on a problem which appears unsolvable. Hope someone can clarify. I have constructed a view in my oracle database which uses data from other oracle databases.
In SQLDeveloper the queries work fine. Now, I programmed my app with all the maps, implementations, interfaces, beans and everthing else that's required and all apears fine until I
do a simple query to select all of the rows from the view. I always receive the same error despite many different attempts at defining all these components. Here´s the exact error:
--- The error occurred in xx/xxxx/xxx/xxxxxx/sqlmaps/GaeVwcmDeri.xml. 
--- The error occurred while applying a parameter map. 
--- Check the GaeVwcmDeri.selectDeriDivsList-InlineParameterMap. 
--- Check the statement (query failed). 
--- Cause: java.sql.SQLDataException: ORA-01861: el literal no coincide con la cadena de formatoNow remember, I'm using Spring and iBatis for db access to oracle so I'll start with the view definition's underlying data types:
COLUMN-NAME     DATA-TYPE     NULLABLE
DERI_CODADIFD     NUMBER          No
DERI_FECHAINI     DATE          No
DERI_FECHAFIN     DATE          Yes
DERI_PCT     NUMBER          No
DERI_CODADIFP     NUMBER          Yes
DERI_DESIG     VARCHAR2(40)     No
DERI_CODCP     VARCHAR2(5)     Yes
CCON_DESIG     CHAR(40)     Yes
DIV_CODIGO     CHAR(4)          Yes
DIV_DESIG     CHAR(30)     Yes
EMP_CODIGO     NUMBER(10,0)     No
EMP_DESIG     VARCHAR2(63)     NoSo here´s the sql-map definition (which i've tried with an explicit resultMap which you see here and I've also tried with with the implicit mapping to the bean and I´ve also tried
selecting only 1 column or 2 and just about every permutation possible as well as usuing column names instead of columnIndexes, etc.. ad infititum):
<sqlMap namespace="GaeVwcmDeri">
     <resultMap id="selectDeriDivsListResult" class="es.adif.gae.common.sql.beans.GaeVwcmDeri">
          <result property="deriCodadifd" columnIndex="1"/>
          <result property="deriFechaini" columnIndex="2" javaType="java.sql.Date" jdbcType="DATE" nullValue="0"/>
          <result property="deriFechafin" columnIndex="3" javaType="java.sql.Date" jdbcType="DATE" nullValue="0"/>
          <result property="deriPct" columnIndex="4"/>
          <result property="deriCodadifp" columnIndex="5"/>
          <result property="deriDesig" columnIndex="6" javaType="java.lang.String" jdbcType="VARCHAR" nullValue="NULL"/>
          <result property="deriCodcp" columnIndex="7" javaType="java.lang.String" jdbcType="VARCHAR" nullValue="NULL"/>
          <result property="cconDesig" columnIndex="8" javaType="java.lang.String" jdbcType="CHAR" nullValue="NULL"/>
          <result property="divCodigo" columnIndex="9" javaType="java.lang.String" jdbcType="CHAR" nullValue="NULL"/>
          <result property="divDesig" columnIndex="10" javaType="java.lang.String" jdbcType="CHAR" nullValue="NULL"/>
          <result property="empCodigo" columnIndex="11"/>
          <result property="empDesig" columnIndex="12" javaType="java.lang.String" jdbcType="VARCHAR" nullValue="NULL"/>
     </resultMap>
     <select id="selectDeriDivsList" resultMap="selectDeriDivsListResult">
          SELECT
               DERI_CODADIFD,
               DERI_FECHAINI,
               DERI_FECHAFIN,
               DERI_PCT,
               DERI_CODADIFP,
               DERI_DESIG,
               DERI_CODCP,
               CCON_DESIG,
               DIV_CODIGO,
               DIV_DESIG,
               EMP_CODIGO,
               EMP_DESIG
          FROM GAE_VWCM_DERI
     </select>
</sqlMap>So here´s the bean variable definitions (with all the setters and getters left out for brevity):
     private long deriCodadifd;
     private Date deriFechaini;
     private Date deriFechafin;
     private float deriPct;
     private long deriCodadifp;
     private String deriDesig;
     private String deriCodcp;
     private String cconDesig;
     private String divCodigo;
     private String divDesig;
     private long empCodigo;
     private String empDesig;So where is the problem? I just don't see it and I think I've tried every possible way to get the data I want. The problem has nothing to do with, GRANTs, SYNONYMs or anything else
strictly oracle related; as I've said, the query works fine in SQLDeveloper (I'll probably try it also in straight JDBC ANd ODBC to see if I can get anymore info). I think it's
clear that the problem is somewhere in the iBatis interface to oracle but I'll be damned if I can find where but I have a feeling that it may have something to do with the NULLABLE
columns which I abhor but can´t do anything about in this case as the underlying data comes from an external DB. Maybe I'll also try a stored procedure but I can't see how the
results would be any different.
If anyone could provide a reasonable suggestion, I'll be the happiest man on earth.
HELP! I'm desperate.
Thanks in advance for any reply,
Bill

Answer 1

Hi Bill,
My guess is that your problem is in the view. Probably because of some unintended implicit data type conversion.
Let's say you use TO_DATE on something already a DATE:
SQL> select to_date(sysdate, 'FXYYYY/MM/DD') from dual;
select to_date(sysdate, 'FXYYYY/MM/DD') from dual
Error at line 1
ORA-01861: literal does not match format stringProblem is impicit conversion of sysdate into varchar2, before applying to_date on the resulting string.
This impplicit conversion is according to your nls settings (Which are session specific, hence the difference between SQL*Plus and iBatis)
SQL> select * from nls_session_parameters
where parameter = 'NLS_DATE_FORMAT'
PARAMETER                      VALUE                                  
NLS_DATE_FORMAT                YYYYMMDD                               
1 row selected.Does this make sense?
Regards
Peter