Query in ASWE XML code doesn't return data

Question

Hello, since people on the Oracle Metalink site are to lazy to give an answer to this question. I'll try it via this forum. Here we go:
I'm developing wireless applications running on Oracle9i Application Server Wireless Edition. I'v tried to implement the employee sample from Oracle Online Mobile Studio (studio.oraclemobile.com). The sample name is employee.jsp. This sample combines XML code with JSP.
(code at the end of the text)
When I test the sample I get no query results.
When you take the first option for example, (search by dept number) the query result will not be displayed. I think it has something to do with the "executeQuery" line.
rset = stmt.executeQuery("select * from EMP where EMPNO='" + empNum + "'");
After giving the following input (employeenumber) 7369 (which excists in the
database). I get the following errors:
The panama server log returns the following error:
1/14/02 5:19:28 PM NOTIFY : [Thread-13]
core.XSLTransformerImpl.getXSLProc(XSLTransformerImpl.java:120)
Create 10 number of XSL-processor for TINY_HTML
1/14/02 5:19:35 PM NOTIFY : [Thread-15]
adapter.URLAdapter.invoke(URLAdapter.java:240)
URL = http://host/portal/test/employee.jsp
1/14/02 5:19:37 PM NOTIFY : [Thread-17] adapter.URLAdapter.invoke(URLAdapter.java:240)
URL =http://host/portal/test/employee.jsp?choice=empNum
1/14/02 5:19:49 PM NOTIFY : [Thread-19]adapter.URLAdapter.invoke(URLAdapter.java:240)
URL =http://host/portal/test/employee.jsp?&empNum=7369
1/14/02 5:19:50 PM ERROR : [Thread-19]rt.common.Controller.reportServiceInvocationError(Controller.java:707)
Service Invocation Error: Stream closed.
The jserv.log returns the following error:
[14/01/2002 17:19:50:431 CET] Invalid column name
java.sql.SQLException: Invalid column name
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:168)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:210)
at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:273)
at oracle.jdbc.driver.OracleStatement.get_column_index(OracleStatement.java:4383)
at oracle.jdbc.driver.OracleResultSetImpl.findColumn(OracleResultSetImpl.java:667)
at oracle.jdbc.driver.OracleResultSet.getString(OracleResultSet.java:1374)
at portal.test._employee._jspService(_employee.java:201)
at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java)
at oracle.jsp.app.JspApplication.dispatchRequest(JspApplication.java)
at oracle.jsp.JspServlet.doDispatch(JspServlet.java)
at oracle.jsp.JspServlet.internalService(JspServlet.java)
at oracle.jsp.JspServlet.service(JspServlet.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)
at org.apache.jserv.JServConnection.processRequest(JServConnection.java:402)
at org.apache.jserv.JServConnection.run(JServConnection.java:260)
at java.lang.Thread.run(Thread.java:479)
Does this have something to do with the encoding of the query result in the select statement? As you can see the variable is in the requeststring (URL = http://host/portal/test/employee.jsp?&empNum=7369)
My database connection works fine (I've also tested the query using SQL plus and the SQL adapter also works).
Is this the right statement?: ("select * from EMP where EMPNO='" + empNum + "'");
I can not do anything with the error in the jserv.log (java.sql.SQLException: Invalid column name).
The columnname EMPNO excists in the example table. The query in SQL plus gives a result.
Can someone give my any suggestions?
Thanks in advance.
Thomas Wesseling, UCC
### Code of employee.jsp ###
<?xml version="1.0" encoding="UTF-8"?>
<SimpleResult>
<SimpleContainer>
<%@ page language="java" import="java.sql.*, java.util.*, java.text.* "%>
<%
//URL variables
String choice = request.getParameter("choice");
String empNum = request.getParameter("empNum");
String lastName = request.getParameter("lastName");
String jobTitle = request.getParameter("jobTitle");
String deptNum = request.getParameter("deptNum");
String notFoundMsg = null; //String for containing varying not found msg
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@172.16.0.51:1521:ora816", "scott", "tiger");
Statement stmt = conn.createStatement();
ResultSet rset = null;
//**** Start of service - first card ****
if (choice==null && empNum==null && lastName==null &&
jobTitle==null && deptNum==null)
%>
<SimpleMenu title="Employee Search by:">
<SimpleMenuItem target="employee.jsp?choice=empNum">Employee Number</SimpleMenuItem>
<SimpleMenuItem target="employee.jsp?choice=lastName">Name</SimpleMenuItem>
<SimpleMenuItem target="employee.jsp?choice=jobTitle">Job Title</SimpleMenuItem>
<SimpleMenuItem target="employee.jsp?choice=deptNum">Dept Number</SimpleMenuItem>
</SimpleMenu>
<%
//**** SECOND CARD - which search criteria ****
if (choice!=null)
if (choice.equals("empNum") && empNum == null)
%>
<!-- show search by employee number -->
<SimpleForm target="employee.jsp?">
<SimpleFormItem name="empNum" format="*N">Enter Employee Number: </SimpleFormItem>
</SimpleForm>
<%
else if (choice.equals("lastName") && lastName == null)
%>
<!-- show search by last name -->
<SimpleForm target="employee.jsp?">
<SimpleFormItem name="lastName" format="*A">Enter Last Name: </SimpleFormItem>
</SimpleForm>
<%
else if (choice.equals("jobTitle") && jobTitle == null)
%>
<!-- show search by job title -->
<SimpleForm target="employee.jsp?">
<SimpleFormSelect name="jobTitle" title="Enter Job Title:">
<SimpleFormOption value="CLERK">Clerk</SimpleFormOption>
<SimpleFormOption value="SALESMAN">Salesman</SimpleFormOption>
<SimpleFormOption value="MANAGER">Manager</SimpleFormOption>
<SimpleFormOption value="ANALYST">Analyst</SimpleFormOption>
<SimpleFormOption value="PRESIDENT">President</SimpleFormOption>
</SimpleFormSelect>
</SimpleForm>
<%
else if (choice.equals("deptNum") && deptNum == null)
%>
<!-- show search by dept number -->
<SimpleForm target="employee.jsp?">
<SimpleFormItem name="deptNum" format="*N">Enter Dept Number: </SimpleFormItem>
</SimpleForm>
<%
//**** THIRD CARD - query DB based on criteria ****
//**** empNum entered as search criteria ****
if (empNum != null) //empNum is entered as search criteria- NEED TO TEST FOR NON-int
rset = stmt.executeQuery("select * from EMP where EMPNO='" + empNum + "'");
if (rset.next()) //if rset returns data, show data
do {
%>
<%@ include file="showResult.jsp" %>
<%
} while (rset.next());
} //end rset.next() is true
else
notFoundMsg = "Employee Number " + empNum + " Not Found";
%>
<%@ include file="notFound.jsp" %>
<% }
} //end if empNum != null
//**** lastName as search criteria ****
else if (lastName != null)
rset = stmt.executeQuery("select * from EMP where ENAME='" + lastName + "'");
if (rset.next())
do {
%>
<%@ include file="showResult.jsp" %>
<%
} while (rset.next());
} //end rset.next is true
else
notFoundMsg = "Name " + lastName + " Not Found";
%>
<%@ include file="notFound.jsp" %>
<% }
} //end if lastName != null
//**** jobTitle as search criteria ****
else if (jobTitle != null)
rset = stmt.executeQuery("select * from EMP where JOB='" + jobTitle + "'");
if (rset.next())
do {
%>
<%@ include file="showResult.jsp" %>
<%
} while (rset.next());
} //end rset.next is true
else
notFoundMsg = "Job Title " + jobTitle + " Not Found";
%>
<%@ include file="notFound.jsp" %>
<% }
} //end if jobTitle != null
//**** deptNum as search criteria ****
else if (deptNum != null) //deptNum is entered as search criteria
rset = stmt.executeQuery("select * from EMP where DEPTNO='" + deptNum + "'");
if (rset.next())
do {
%>
<%@ include file="showResult.jsp" %>
<%
} while (rset.next());
else
notFoundMsg = "Dept Number " + deptNum + " Not Found";
%>
<%@ include file="notFound.jsp" %>
<% }
} //end if deptNum != null
conn.close();
%>
</SimpleContainer>
</SimpleResult>
### Code of NotFound.jsp ###
<SimpleText>
<SimpleTextItem><%=notFoundMsg%></SimpleTextItem>
<Action label="Search" type="ACCEPT" task="GO" target="employee.jsp?"></Action>
</SimpleText>
### Code of ShowResult.jsp ###
<%
//format date from query
java.sql.Date date = rset.getDate("HIREDATE");
String hireDate = DateFormat.getDateInstance(DateFormat.MEDIUM).format(date);
%>
<SimpleText>
<SimpleTextItem>Emp#: <%=rset.getString("EMPNO")%></SimpleTextItem>
<SimpleTextItem>Name: <%=rset.getString("ENAME")%></SimpleTextItem>
<SimpleTextItem>Job: <%=rset.getString("JOB")%></SimpleTextItem>
<SimpleTextItem>Manager: <%=rset.getString("MGR")%></SimpleTextItem>
<SimpleTextItem>Hire Date: <%=hireDate %></SimpleTextItem>
<SimpleTextItem>Salary: <%=rset.getString("SAL")%></SimpleTextItem>
<SimpleTextItem>Commission: <%=rset.getString("COMM")%></SimpleTextItem>
<SimpleTextItem>Dept#: <%=rset.getString("DEPTNO")%></SimpleTextItem>
<SimpleTextItem>Email: <%=rset.getString("EMAIL")%></SimpleTextItem>
<SimpleTextItem>Phone: <%=rset.getString("PHONE")%></SimpleTextItem>
<Action label="Search" type="SOFT1" task="GO" target="employee.jsp"></Action>
<Action label="Call" type="OPTIONS" task="CALL" number="<%=rset.getString("PHONE")%>"></Action>
</SimpleText>

Answer 1

Is EMPNO really a string field and not a numeric field? Your query is like
... where EMPNO='1949'
and should it perhaps be
... where EMPNO=1949
?