Vaadin SQLSyntaxErrorException utilisant JavaDB/Derby: "LIMIT" rencontré à la ligne 1, colonne 41

Question

Suite à ce tutorial about Vaadin 7 and SQLContainer j'ai rencontré le problème suivant. Je suis en train de coder dans Netbeans 8.0.2 et je voudrais utiliser la base de données JavaDB/Derby intégrée sur JDBC dans cette première phase de développement.
J'essaye de mettre à jour une table dans mon application Vaadin pour montrer des données. Inside init(VaadinRequest vaadinRequest) J'appelle ma méthode database().

import com.vaadin.data.util.sqlcontainer.SQLContainer; 
import com.vaadin.data.util.sqlcontainer.connection.JDBCConnectionPool; 
import com.vaadin.data.util.sqlcontainer.connection.SimpleJDBCConnectionPool; 
import com.vaadin.data.util.sqlcontainer.query.TableQuery; 

private void database() { 
    System.out.println("database()"); 
    JDBCConnectionPool pool = null; 
    try { 
     pool = new SimpleJDBCConnectionPool("org.apache.derby.jdbc.ClientDriver", 
       "jdbc:derby://localhost:1527/gr", "a", "a", 2, 5); 
     TableQuery tq = new TableQuery("GROCERY", pool); 
     tq.setVersionColumn("OPTLOCK"); 
     SQLContainer container = new SQLContainer(tq); // <-- raises exception 
     //container.setAutoCommit(true); 
     Item i = container.addItem(1); 
     Object props = i.getItemPropertyIds(); 
    } catch (SQLException ex) { 
     Logger.getLogger(MyUI.class.getName()).log(Level.SEVERE, null, ex); 
    } 
} 

Au lieu des données, j'obtiens cette exception. Que fais-je tort ou manquant?

java.sql.SQLSyntaxErrorException: Syntax error: Encountered "LIMIT" at line 1, column 41. 
at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source) 
at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source) 
at org.apache.derby.client.am.Connection.prepareStatement(Unknown Source) 
at com.vaadin.data.util.sqlcontainer.query.TableQuery.executeQuery(TableQuery.java:526) 
at com.vaadin.data.util.sqlcontainer.query.TableQuery.getResults(TableQuery.java:252) 
at com.vaadin.data.util.sqlcontainer.SQLContainer.getPropertyIds(SQLContainer.java:1200) 
at com.vaadin.data.util.sqlcontainer.SQLContainer.<init>(SQLContainer.java:134) 
at org.darugna.MyUI.database(MyUI.java:294) 
at org.darugna.MyUI.init(MyUI.java:194) 
at com.vaadin.ui.UI.doInit(UI.java:675) 
at com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:214) 
at com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74) 
at com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41) 
at com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1408) 
at com.vaadin.server.VaadinServlet.service(VaadinServlet.java:351) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) 
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:344) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) 
at org.glassfish.tyrus.servlet.TyrusServletFilter.doFilter(TyrusServletFilter.java:295) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:316) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160) 
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734) 
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673) 
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174) 
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282) 
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459) 
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167) 
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201) 
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175) 
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235) 
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133) 
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112) 
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77) 
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561) 
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56) 
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137) 
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565) 
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545) 
at java.lang.Thread.run(Thread.java:745) 
Caused by: org.apache.derby.client.am.SqlException: Syntax error: Encountered "LIMIT" at line 1, column 41. 
at org.apache.derby.client.am.Statement.completeSqlca(Unknown Source) 
at org.apache.derby.client.net.NetStatementReply.parsePrepareError(Unknown Source) 
at org.apache.derby.client.net.NetStatementReply.parsePRPSQLSTTreply(Unknown Source) 
at org.apache.derby.client.net.NetStatementReply.readPrepareDescribeOutput(Unknown Source) 
at org.apache.derby.client.net.StatementReply.readPrepareDescribeOutput(Unknown Source) 
at org.apache.derby.client.net.NetStatement.readPrepareDescribeOutput_(Unknown Source) 
at org.apache.derby.client.am.Statement.readPrepareDescribeOutput(Unknown Source) 
at org.apache.derby.client.am.PreparedStatement.readPrepareDescribeInputOutput(Unknown Source) 
at org.apache.derby.client.am.PreparedStatement.flowPrepareDescribeInputOutput(Unknown Source) 
at org.apache.derby.client.am.PreparedStatement.prepare(Unknown Source) 
at org.apache.derby.client.am.Connection.prepareStatementX(Unknown Source) 
... 47 more 

C'est mon schéma de la table

CREATE TABLE grocery (
    id INTEGER PRIMARY KEY, 
    OPTLOCK INTEGER, 
    name TEXT, 
    category TEXT, 
    price INTEGER 
); 

Answer 1

Le problème réside dans le fait que Derby ne support SQL LIMIT.

Il faut fournir son propre générateur SQL qui crée la requête d'une autre manière.

Je poste ici la solution par Janko Dimitroff that I found in Vaadin forums.

import com.vaadin.data.util.sqlcontainer.query.generator.DefaultSQLGenerator; 

/** 
* @author Janko Dimitroff 
*/ 
@SuppressWarnings("serial") 
public class DerbySQLGenerator extends DefaultSQLGenerator { 

    public DerbySQLGenerator() { 
    } 

    /** Construct a DerbySQLGenerator with the specified identifiers for start and end of quoted strings. The identifiers 
    * may be different depending on the database engine and it's settings. 
    * 
    * @param quoteStart the identifier (character) denoting the start of a quoted string 
    * @param quoteEnd the identifier (character) denoting the end of a quoted string */ 
    public DerbySQLGenerator(String quoteStart, String quoteEnd) { 
     super(quoteStart, quoteEnd); 
    } 

    /** Generates the LIMIT and OFFSET clause. 
    * 
    * @param sb StringBuffer to which the clause is appended. 
    * @param offset Value for offset. 
    * @param pagelength Value for pagelength. 
    * @return StringBuffer with LIMIT and OFFSET clause added. */ 
    protected StringBuffer generateLimits(StringBuffer sb, int offset, int pagelength) { 
     sb.append(" OFFSET ").append(offset).append(" ROWS").append(" FETCH NEXT ").append(pagelength).append(" ROWS ONLY"); 
     return sb; 
    } 
}