Hi all,
I have a page that displays a list or airports from a database query. The
page displays the correct database values from some fields, null values from
others. Through debugging, I have figured out that the fields that display
as null are never set to begin with, but as best I can tell, they should be.
Some of the fields with problems are identical in structure to fields with
no problems. Latitude/longitude, and airport id are all Integers in my java
class, and are NUMBER in Oracle. Lat/lon get proper values, id remains
null. Of the fields I query, only latitude, longitude, and name get
non-null values. I have verified that if I directly perform the query
against the database, all proper values are returned, so the query is not my
problem. I suspect that the problem lies in my resultMap, but I haven't
been able to figure out what is wrong there.
I use Ibatis and Spring, with an Oracle 10g database. Relevant code is
included below. Any help would be greatly appreciated.
The SQL map xml file:
<sqlMap namespace="Airport">
<resultMap id="result" class="domain.Airport">
<result property="id" javaType="Integer" jdbcType="NUMBER"
column="AIRPORT_ID" columnIndex="1"/>
<result property="iataCode" javaType="String"
jdbcType="CHAR(3)" column="IATA_CODE" columnIndex="2"/>
<result property="icaoCode" javaType="String"
jdbcType="CHAR(4)" column="ICAO_CODE" columnIndex="3"/>
<result property="latitude" javaType="Integer"
jdbcType="NUMBER" column="LATITUDE" columnIndex="4"/>
<result property="longitude" javaType="Integer"
jdbcType="NUMBER" column="LONGITUDE" columnIndex="5"/>
<result property="startDate" javaType="String"
jdbcType="TIMESTAMP" column="START_DATE" columnIndex="6"/>
<result property="endDate" javaType="String"
jdbcType="TIMESTAMP" column="END_DATE" columnIndex="7"/>
<result property="name" javaType="String"
jdbcType="VARCHAR2" column="NAME" columnIndex="8"/>
</resultMap>
<select id="getAirportList" resultClass="domain.Airport">
SELECT
AIRPORT.AIRPORT_ID,
AIRPORT.IATA_CODE,
AIRPORT.ICAO_CODE,
AIRPORT.LATITUDE,
AIRPORT.LONGITUDE,
AIRPORT.START_DATE,
AIRPORT.END_DATE,
AIRPORT_NAME.NAME
FROM AIRPORT, AIRPORT_NAME
WHERE AIRPORT.AIRPORT_ID = AIRPORT_NAME.AIRPORT_ID
AND AIRPORT_NAME.MAIN_FLG = 1
</select>
</sqlMap>
AirportSqlMapDao class has:
public List<Airport> getAirportList() {
return
(List<Airport>)getSqlMapClientTemplate().queryForList("getAirportList");
}
The fields from the Airport class. Getter/setter methods are typical
getter/setters.
private Integer id;
private String name;
private String iataCode;
private String icaoCode;
private Integer latitude;
private Integer longitude;
private String startDate, endDate;
My manager class:
public class SimpleAirportManager implements AirportManager {
private AirportDao airportDao;
public List<Airport> getAirports() {
return airportDao.getAirportList();
}
public void setAirportDao(AirportDao airportDao) {
this.airportDao = airportDao;
}
}
My controller has the code:
public ModelAndView handleRequest(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
Map<String, Object> myModel = new HashMap<String, Object>();
myModel.put("airports", this.airportManager.getAirports());
return new ModelAndView("hello", "model", myModel);
}
This is the code from the display page:
<table border=1>
<tr><td>ID</td><td>Name</td><td>IATA code</td><td>ICAO
code</td><td>Latitude</td><td>Longitude</td><td>Start Date</td><td>End
Date</td></tr>
<c:forEach items="${model.airports}" var="arpt">
<tr>
<td><c:out value="${arpt.id}"/></td>
<td><c:out value="${arpt.name}"/></td>
<td><c:out value="${arpt.iataCode}"/></td>
<td><c:out value="${arpt.icaoCode}"/></td>
<td><c:out value="${arpt.latitude}"/></td>
<td><c:out value="${arpt.longitude}"/></td>
<td><c:out value="${arpt.startDate}"/></td>
<td><c:out value="${arpt.endDate}"/></td>
</tr>
</c:forEach>
</table>
