package demo45;
import org.openswing.swing.table.client.GridController;
import java.util.*;
import org.openswing.swing.message.receive.java.*;
import java.sql.*;
import org.openswing.swing.message.send.java.FilterWhereClause;
import org.openswing.swing.table.java.GridDataLocator;
import org.openswing.swing.server.QueryUtil;
import org.openswing.swing.message.send.java.GridParams;
import org.openswing.swing.client.GridControl;
import org.openswing.swing.util.java.Consts;
/**
* <p>Title: OpenSwing Framework</p>
* <p>Description: Grid controller for users.</p>
* <p>Copyright: Copyright (C) 2006 Mauro Carniel</p>
* <p> </p>
* @author Mauro Carniel
* @version 1.0
*/
public class UsersController extends GridController implements GridDataLocator {
private Connection conn = null;
private UserRolesFrame frame = null;
public UsersController(Connection conn,UserRolesFrame frame) {
this.conn = conn;
this.frame = frame;
}
/**
* Callback method invoked when the user has selected another row.
* @param rowNumber selected row index
*/
public void rowChanged(int rowNumber) {
if (frame.getUsersGrid().getMode()!=Consts.READONLY)
return;
if (rowNumber==-1)
frame.getUserRolesGrid().clearData();
else {
UserVO vo = (UserVO)frame.getUsersGrid().getVOListTableModel().getObjectForRow(frame.getUsersGrid().getSelectedRow());
frame.getUserRolesGrid().getOtherGridParams().put("username",vo.getUsername());
frame.getUserRolesGrid().reloadData();
}
}
/**
* Callback method invoked each time the grid mode is changed.
* @param currentMode current grid mode
*/
public void modeChanged(int currentMode) {
if (currentMode==Consts.READONLY) {
frame.setButtonsEnabled(true);
}
else {
frame.getUserRolesGrid().setMode(Consts.READONLY);
frame.setButtonsEnabled(false);
}
}
/**
* Callback method invoked to load data on the grid.
* @param action fetching versus: PREVIOUS_BLOCK_ACTION, NEXT_BLOCK_ACTION or LAST_BLOCK_ACTION
* @param startPos start position of data fetching in result set
* @param filteredColumns filtered columns
* @param currentSortedColumns sorted columns
* @param currentSortedVersusColumns ordering versus of sorted columns
* @param valueObjectType v.o. type
* @param otherGridParams other grid parameters
* @return response from the server: an object of type VOListResponse if data loading was successfully completed, or an ErrorResponse onject if some error occours
*/
public Response loadData(
int action,
int startIndex,
Map filteredColumns,
ArrayList currentSortedColumns,
ArrayList currentSortedVersusColumns,
Class valueObjectType,
Map otherGridParams) {
try {
String sql = "select USERS.USERNAME,USERS.PASSWORD,USERS.DESCRIPTION from USERS";
// mapping between attributes and database fields...
Map attribute2dbField = new HashMap();
attribute2dbField.put("username","USERS.USERNAME");
attribute2dbField.put("description","USERS.DESCRIPTION");
attribute2dbField.put("password","USERS.PASSWORD");
return QueryUtil.getQuery(
conn,
sql,
new ArrayList(), // list of values linked to "?" parameters in sql
attribute2dbField,
UserVO.class, // v.o. to dinamically create for each row...
"Y",
"N",
new GridParams(
action,
startIndex,
filteredColumns,
currentSortedColumns,
currentSortedVersusColumns,
new HashMap() // other params...
),
50, // pagination size...
true // log query...
);
}
catch (Exception ex) {
ex.printStackTrace();
return new ErrorResponse(ex.getMessage());
}
}
/**
* Method invoked when the user has clicked on save button and the grid is in INSERT mode.
* @param rowNumbers row indexes related to the new rows to save
* @param newValueObjects list of new value objects to save
* @return an ErrorResponse value object in case of errors, VOListResponse if the operation is successfully completed
*/
public Response insertRecords(int[] rowNumbers, ArrayList newValueObjects) throws Exception {
// mapping between attributes and database fields...
Map attribute2dbField = new HashMap();
attribute2dbField.put("username","USERNAME");
attribute2dbField.put("description","DESCRIPTION");
attribute2dbField.put("password","PASSWORD");
Response res = QueryUtil.insertTable(conn,newValueObjects,"USERS",attribute2dbField,"Y","N",true);
if (res.isError())
conn.rollback();
else
conn.commit();
return res;
}
/**
* Method invoked when the user has clicked on save button and the grid is in EDIT mode.
* @param rowNumbers row indexes related to the changed rows
* @param oldPersistentObjects old value objects, previous the changes
* @param persistentObjects value objects relatied to the changed rows
* @return an ErrorResponse value object in case of errors, VOListResponse if the operation is successfully completed
*/
public Response updateRecords(int[] rowNumbers,ArrayList oldPersistentObjects,ArrayList persistentObjects) throws Exception {
// mapping between attributes and database fields...
Map attribute2dbField = new HashMap();
attribute2dbField.put("username","USERNAME");
attribute2dbField.put("description","DESCRIPTION");
attribute2dbField.put("password","PASSWORD");
HashSet pk = new HashSet();
pk.add("username");
Response res = null;
UserVO oldVO = null;
UserVO newVO = null;
for(int i=0;i<persistentObjects.size();i++) {
oldVO = (UserVO)oldPersistentObjects.get(i);
newVO = (UserVO)persistentObjects.get(i);
res = QueryUtil.updateTable(conn,pk,oldVO,newVO,"USERS",attribute2dbField,"Y","N",true);
if (res.isError()) {
conn.rollback();
return res;
}
}
conn.commit();
return new VOListResponse(persistentObjects,false,persistentObjects.size());
}
/**
* Method invoked when the user has clicked on delete button and the grid is in READONLY mode.
* @param persistentObjects value objects to delete (related to the currently selected rows)
* @return an ErrorResponse value object in case of errors, VOResponse if the operation is successfully completed
*/
public Response deleteRecords(ArrayList persistentObjects) throws Exception {
PreparedStatement stmt = null;
try {
stmt = conn.prepareStatement("delete from USERS where USERNAME=?");
UserVO vo = null;
for(int i=0;i<persistentObjects.size();i++) {
vo = (UserVO)persistentObjects.get(i);
stmt.setString(1,vo.getUsername());
stmt.execute();
}
return new VOResponse(new Boolean(true));
}
catch (SQLException ex) {
ex.printStackTrace();
return new ErrorResponse(ex.getMessage());
}
finally {
try {
stmt.close();
conn.commit();
}
catch (SQLException ex1) {
}
}
}
}