/**
* Method called by the Form panel to delete existing data.
*
* @param persistentObject value object to delete
* @return an ErrorResponse value object in case of errors, VOResponse if the operation is
* successfully completed
*/
public Response deleteRecord(ValueObject persistentObject) throws Exception {
PreparedStatement stmt = null;
try {
EmpVO vo = (EmpVO) persistentObject;
// delete from WORKING_DAYS...
stmt = conn.prepareStatement("delete from WORKING_DAYS where EMP_CODE=?");
stmt.setString(1, vo.getEmpCode());
stmt.execute();
stmt.close();
// delete from EMP...
stmt = conn.prepareStatement("delete from EMP where EMP_CODE=?");
stmt.setString(1, vo.getEmpCode());
stmt.execute();
gridFrame.reloadData();
frame.getGrid().clearData();
return new VOResponse(vo);
} catch (SQLException ex) {
ex.printStackTrace();
return new ErrorResponse(ex.getMessage());
} finally {
try {
stmt.close();
conn.commit();
} catch (SQLException ex1) {
}
}
}
/**
* This method must be overridden by the subclass to retrieve data and return the valorized value
* object.
*
* @param valueObjectClass value object class
* @return a VOResponse object if data loading is successfully completed, or an ErrorResponse
* object if an error occours
*/
public Response loadData(Class valueObjectClass) {
try {
// since this method could be invoked also when selecting another row on the linked grid,
// the pk attribute must be recalculated from the grid...
int row = gridFrame.getGrid().getSelectedRow();
if (row != -1) {
GridEmpVO gridVO =
(GridEmpVO) gridFrame.getGrid().getVOListTableModel().getObjectForRow(row);
pk = gridVO.getEmpCode();
}
String sql =
"select EMP.EMP_CODE,EMP.FIRST_NAME, EMP.LAST_NAME,EMP.DEPT_CODE,DEPT.DESCRIPTION,EMP.TASK_CODE,TASKS.DESCRIPTION,EMP.SEX,EMP.HIRE_DATE,EMP.SALARY,EMP.NOTE "
+ "from EMP,DEPT,TASKS where EMP.DEPT_CODE=DEPT.DEPT_CODE and EMP.TASK_CODE=TASKS.TASK_CODE and EMP.EMP_CODE='"
+ pk
+ "'";
// mapping between attributes and database fields...
Map attribute2dbField = new HashMap();
attribute2dbField.put("empCode", "EMP.EMP_CODE");
attribute2dbField.put("firstName", "EMP.FIRST_NAME");
attribute2dbField.put("lastName", "EMP.LAST_NAME");
attribute2dbField.put("deptCode", "EMP.DEPT_CODE");
attribute2dbField.put("deptDescription", "DEPT.DESCRIPTION");
attribute2dbField.put("taskCode", "EMP.TASK_CODE");
attribute2dbField.put("taskDescription", "TASKS.DESCRIPTION");
attribute2dbField.put("sex", "EMP.SEX");
attribute2dbField.put("hireDate", "EMP.HIRE_DATE");
attribute2dbField.put("salary", "EMP.SALARY");
attribute2dbField.put("note", "EMP.NOTE");
return QueryUtil.getQuery(
conn,
sql,
new ArrayList(), // list of values linked to "?" parameters in sql
attribute2dbField,
EmpVO.class, // v.o. to dinamically create for each row...
"Y",
"N",
true // log query...
);
} catch (Exception ex) {
ex.printStackTrace();
return new ErrorResponse(ex.getMessage());
}
/*
// an alternative way: you can define your own business logic to retrieve data and adding filtering/sorting conditions at hand...
Statement stmt = null;
try {
stmt = conn.createStatement();
ResultSet rset = stmt.executeQuery(
"select EMP.EMP_CODE,EMP.FIRST_NAME, EMP.LAST_NAME,EMP.DEPT_CODE,DEPT.DESCRIPTION,EMP.TASK_CODE,TASKS.DESCRIPTION,EMP.SEX,EMP.HIRE_DATE,EMP.SALARY,EMP.NOTE "+
"from EMP,DEPT,TASKS where EMP.DEPT_CODE=DEPT.DEPT_CODE and EMP.TASK_CODE=TASKS.TASK_CODE and EMP.EMP_CODE='"+pk+"'"
);
if (rset.next()) {
EmpVO vo = new EmpVO();
vo.setEmpCode(rset.getString(1));
vo.setFirstName(rset.getString(2));
vo.setLastName(rset.getString(3));
vo.setDeptCode(rset.getString(4));
vo.setDeptDescription(rset.getString(5));
vo.setTaskCode(rset.getString(6));
vo.setTaskDescription(rset.getString(7));
vo.setSex(rset.getString(8));
vo.setHireDate(rset.getDate(9));
vo.setSalary(rset.getBigDecimal(10));
vo.setNote(rset.getString(11));
return new VOResponse(vo);
}
else
return new ErrorResponse("No data found.");
}
catch (SQLException ex) {
ex.printStackTrace();
return new ErrorResponse(ex.getMessage());
}
finally {
try {
stmt.close();
}
catch (SQLException ex1) {
}
}
*/
}