AsyncCallback呼び出しでオブジェクトのリストを取得しようとしています。onSuccessプロシージャのリストデータを見るまで、すべてが正常に見えます。実際、正しい行数のリストを受け取りましたが、すべての行はSQLステートメントによって最後に取得されたものと同じです。
これは、EntryPointクライアントモジュールです。
package com.fantaprica.client;
import java.util.List;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.core.client.GWT;
import com.fantaprica.shared.GameDay;
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public class Fantaprica implements EntryPoint {
private final ODBConnectionAsync odbconnectionSvc = GWT
.create(ODBConnection.class);
/**
* Entry point classes define <code>onModuleLoad()</code>.
*/
public void onModuleLoad() {
odbconnectionSvc
.getGameDayList(new AsyncCallback<List<GameDay>>() {
public void onFailure(Throwable caught) {
}
public void onSuccess(List<GameDay> result) {
System.out.println("#########################################");
System.out.println("OnModuleLoad");
for (int i = 0; i < result.size(); i++) {
System.out.println("index="+i);
System.out.println("result.get(i).getGameDayCompetition()="+result.get(i).getGameDayCompetition());
System.out.println("result.get(i).getGameDayCupFl()"+result.get(i).getGameDayCupFl());
System.out.println("result.get(i).getGameDayId()="+result.get(i).getGameDayId());
System.out.println("result.get(i).getGameDayOrder()="+result.get(i).getGameDayOrder());
System.out.println("result.get(i).getGameDaySeason()="+result.get(i).getGameDaySeason());
}
}
});
}
}
これはサーバー側での実装です。
package com.fantaprica.server;
import java.text.ParseException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Connection2DB {
public static ResultSet resultset(String p_sql_statement) throws ParseException {
//String db_file_name_prefix = "/home/dario/workspace/fantaprica/src/com/fantaprica/server/database/database";
//String db_file_name_prefix = "/home/dario/workspace/fantaprica/war/database/database";
String db_file_name_prefix = "/home/dario/Workspace/Fantaprica/war/fantaprica/database/database";
Connection con = null;
// connect to the database. This will load the db files and start the
// database if it is not alread running.
// db_file_name_prefix is used to open or create files that hold the
// state
// of the db.
// It can contain directory names relative to the
// current working directory
try {
Class.forName("org.hsqldb.jdbcDriver");
con = DriverManager.getConnection("jdbc:hsqldb:file:"
+ db_file_name_prefix, // filenames prefix
"sa", // user
""); // pass
Statement statement = con.createStatement();
ResultSet rs = statement.executeQuery(p_sql_statement);
System.out.println("query "+p_sql_statement+" eseguita");
statement.close();
con.close();
return rs;
} catch (ClassNotFoundException ex) {
Logger.getLogger(TestConnection.class.getName()).log(Level.SEVERE,
null, ex);
System.out.println("errore "+ex.toString());
return null;
} catch (SQLException ex) {
Logger.getLogger(TestConnection.class.getName()).log(Level.SEVERE,
null, ex);
ex.printStackTrace();
System.out.println("errore "+ex.toString());
return null;
}
}
public static void execstmt(String p_sql_statement) throws ParseException {
String db_file_name_prefix = "/home/dario/Workspace/Fantaprica/war/fantaprica/database/database";
Connection con = null;
// connect to the database. This will load the db files and start the
// database if it is not alread running.
// db_file_name_prefix is used to open or create files that hold the
// state
// of the db.
// It can contain directory names relative to the
// current working directory
try {
Class.forName("org.hsqldb.jdbcDriver");
con = DriverManager.getConnection("jdbc:hsqldb:file:"
+ db_file_name_prefix, // filenames prefix
"sa", // user
""); // pass
Statement statement = con.createStatement();
statement.executeUpdate(p_sql_statement);
System.out.println("statement "+p_sql_statement+" eseguito");
statement.close();
con.close();
} catch (ClassNotFoundException ex) {
Logger.getLogger(TestConnection.class.getName()).log(Level.SEVERE,
null, ex);
System.out.println("errore "+ex.toString());
} catch (SQLException ex) {
Logger.getLogger(TestConnection.class.getName()).log(Level.SEVERE,
null, ex);
ex.printStackTrace();
System.out.println("errore "+ex.toString());
}
}
}
コードを実行すると、次の結果が得られます。
#########################################
ODBConnectionImpl
Start creating the list
scanning resultset
v_game_day_tmp.getGameDayCompetition()=campionato
v_game_day_tmp.getGameDayCupFl()=false
v_game_day_tmp.getGameDayId()=0
v_game_day_tmp.getGameDayOrder()15
v_game_day_tmp.getGameDaySeason()2012/2013
0
index=0
v_game_day_list.get(i).getGameDayCompetition()=campionato
v_game_day_list.get(i).getGameDayCupFl()=false
v_game_day_list.get(i).getGameDayId()=0
v_game_day_list.get(i).getGameDayOrder()=15
v_game_day_list.get(i).getGameDaySeason()=2012/2013
scanning resultset
v_game_day_tmp.getGameDayCompetition()=campionato
v_game_day_tmp.getGameDayCupFl()=false
v_game_day_tmp.getGameDayId()=1
v_game_day_tmp.getGameDayOrder()14
v_game_day_tmp.getGameDaySeason()2012/2013
1
index=1
v_game_day_list.get(i).getGameDayCompetition()=campionato
v_game_day_list.get(i).getGameDayCupFl()=false
v_game_day_list.get(i).getGameDayId()=1
v_game_day_list.get(i).getGameDayOrder()=14
v_game_day_list.get(i).getGameDaySeason()=2012/2013
scanning resultset
v_game_day_tmp.getGameDayCompetition()=campionato
v_game_day_tmp.getGameDayCupFl()=false
v_game_day_tmp.getGameDayId()=2
v_game_day_tmp.getGameDayOrder()13
v_game_day_tmp.getGameDaySeason()2012/2013
2
index=2
v_game_day_list.get(i).getGameDayCompetition()=campionato
v_game_day_list.get(i).getGameDayCupFl()=false
v_game_day_list.get(i).getGameDayId()=2
v_game_day_list.get(i).getGameDayOrder()=13
v_game_day_list.get(i).getGameDaySeason()=2012/2013
scanning resultset
v_game_day_tmp.getGameDayCompetition()=mundialito
v_game_day_tmp.getGameDayCupFl()=false
v_game_day_tmp.getGameDayId()=3
v_game_day_tmp.getGameDayOrder()12
v_game_day_tmp.getGameDaySeason()2012/2013
3
index=3
v_game_day_list.get(i).getGameDayCompetition()=mundialito
v_game_day_list.get(i).getGameDayCupFl()=false
v_game_day_list.get(i).getGameDayId()=3
v_game_day_list.get(i).getGameDayOrder()=12
v_game_day_list.get(i).getGameDaySeason()=2012/2013
list created
#########################################
OnModuleLoad
index=0
result.get(i).getGameDayCompetition()=mundialito
result.get(i).getGameDayCupFl()false
result.get(i).getGameDayId()=3
result.get(i).getGameDayOrder()=12
result.get(i).getGameDaySeason()=2012/2013
index=1
result.get(i).getGameDayCompetition()=mundialito
result.get(i).getGameDayCupFl()false
result.get(i).getGameDayId()=3
result.get(i).getGameDayOrder()=12
result.get(i).getGameDaySeason()=2012/2013
index=2
result.get(i).getGameDayCompetition()=mundialito
result.get(i).getGameDayCupFl()false
result.get(i).getGameDayId()=3
result.get(i).getGameDayOrder()=12
result.get(i).getGameDaySeason()=2012/2013
index=3
result.get(i).getGameDayCompetition()=mundialito
result.get(i).getGameDayCupFl()false
result.get(i).getGameDayId()=3
result.get(i).getGameDayOrder()=12
result.get(i).getGameDaySeason()=2012/2013
ご覧のとおり、リストはODBConnectionImplで正しく作成され、4つの異なる行で構成されています。しかし、AsyncCallback呼び出しに返されたリストをスキャンすると、4つの等しい行があり、すべてResultSetの最後の行と同じです。
助けとアドバイスをありがとう、ダリオ