Error converting a data from one class to another

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Error converting a data from one class to another

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#1 by (2 votes)

1

I'm using JSF in a project, I have a working "W-A" screen that displays the data from the "T-A" table on a grid. In this grid, each line has a button that points to a new "WB" screen where the "detailing" of the previous screen item in a grid will be displayed, and these items are in the "TB" table, which has the foreign key primary key of the "TA" table.

The problem is that when I click this button I have the following error:

AVISO: Cannot convert com.model.Log@5a86506a of type class com.model.Log to class com.model.LogIntegracao
javax.el.ELException: Cannot convert com.model.Log@5a86506a of type class com.model.Log to class com.model.LogIntegracao
    at org.apache.el.lang.ELSupport.coerceToType(ELSupport.java:438)
    at org.apache.el.ExpressionFactoryImpl.coerceToType(ExpressionFactoryImpl.java:46)
    at com.sun.faces.facelets.tag.jsf.core.SetPropertyActionListenerHandler$SetPropertyListener.processAction(SetPropertyActionListenerHandler.java:204)
    at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:778)
    at javax.faces.component.UICommand.broadcast(UICommand.java:300)
    at javax.faces.component.UIData.broadcast(UIData.java:915)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:787)
    at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1252)
    at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
    at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:508)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1115)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.lang.Thread.run(Thread.java:662)

My Bean is as follows:

package com.model;

import java.io.Serializable;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.List;

import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;

import com.DAO.LogDAO;
import com.controller.Conexao;

@ManagedBean(name = "LogMB")
@SessionScoped
public class LogBean implements Serializable {

    private static final long serialVersionUID = 1L;
    private Log log;
    private List<Log> logs;
    private EntradaFiltroLog entradaLog;
    private RetornoFiliais filiais;
    private RetornoIntegracoes integracoes;
    private int[] filiaisSelecionadas;
    private String[] integracoesSelecionadas;
    private LogIntegracao serv;

    public static long getSerialversionuid() {
        return serialVersionUID;
    }

    public Log getLog() {
        return log;
    }

    public void setLog(Log log) {
        this.log = log;
    }

    public List<Log> getLogs() {
        return logs;
    }

    public void setLogs(List<Log> logs) {
        this.logs = logs;
    }

    public EntradaFiltroLog getEntradaLog() {
        return entradaLog;
    }

    public void setEntradaLog(EntradaFiltroLog entradaLog) {
        this.entradaLog = entradaLog;
    }

    public List<Integer> getFiliais() {
        return filiais.getFiliais();
    }

    public void setFiliais(RetornoFiliais filiais) {
        this.filiais = filiais;
    }

    public List<String> getIntegracoes() {
        return integracoes.getIntegracoes();
    }

    public void setIntegracoes(RetornoIntegracoes integracoes) {
        this.integracoes = integracoes;
    }

    public int[] getFiliaisSelecionadas() {
        return filiaisSelecionadas;
    }

    public void setFiliaisSelecionadas(int[] filiaisSelecionadas) {
        this.filiaisSelecionadas = filiaisSelecionadas;
    }

    public String[] getIntegracoesSelecionadas() {
        return integracoesSelecionadas;
    }

    public void setIntegracoesSelecionadas(String[] integracoesSelecionadas) {
        this.integracoesSelecionadas = integracoesSelecionadas;
    }

    public LogIntegracao getServ(Log log) {
        return new LogIntegracao(log);
    }

    public void setServ(LogIntegracao serv) {
        this.serv = serv;
    }

    public void setFiltroFilialIntegracao() throws Exception {
        Connection conn = Conexao.getConnection();
        filiais = LogDAO.buscarFilaisLogs(conn);
        if (!filiais.getFiliais().isEmpty()) {
            integracoes = LogDAO.buscarIntegracoesLogs(conn);
        }
    }

    public LogBean() {
        try {
            setFiltroFilialIntegracao();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        this.log = new Log();
        this.entradaLog = new EntradaFiltroLog();
        logs = setLogs();
    }

    private List<Log> setLogs() {
        Connection conn = null;

        try {
            conn = Conexao.getConnection();
            RetornoLogsExistentes retorno = new RetornoLogsExistentes();
            retorno.setLogs(LogDAO.retornaLogs(conn, entradaLog));
            this.log = new Log();
            setLogs(retorno.getLogs());

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return logs;

    }

    public void BuscarLogs() {
        Connection conn = null;
        logs = new ArrayList<Log>();
        try {
            conn = Conexao.getConnection();
            entradaLog.setFiliais(filiaisSelecionadas);
            entradaLog.setIntegracoes(integracoesSelecionadas);
            RetornoLogsExistentes retorno = new RetornoLogsExistentes();
            retorno.setLogs(LogDAO.retornaLogs(conn, entradaLog));

            setLogs(retorno.getLogs());
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

    public String exibeInconsistencias() {
        return "orq0900a.xhtml";
    }
}

The Log class looks like this:

package com.model;

import java.sql.Date;

public class Log {

    private int id_logint;
    private int filial;
    private int id_integracao;
    private Date dataexecucao;
    private String conteudoenv;
    private String conteudorec;
    private int status;
    private String descrocorr;
    private String integracao;

    public int getId_logint() {
        return id_logint;
    }

    public void setId_logint(int id_logint) {
        this.id_logint = id_logint;
    }

    public int getFilial() {
        return filial;
    }

    public void setFilial(int filial) {
        this.filial = filial;
    }

    public int getId_integracao() {
        return id_integracao;
    }

    public void setId_integracao(int id_integracao) {
        this.id_integracao = id_integracao;
    }

    public Date getData() {
        return dataexecucao;
    }

    public void setData(Date dataexecucao) {
        this.dataexecucao = dataexecucao;
    }

    public String getConteudoenv() {
        return conteudoenv;
    }

    public void setConteudoenv(String conteudoenv) {
        this.conteudoenv = conteudoenv;
    }

    public String getConteudorec() {
        return conteudorec;
    }

    public void setConteudorec(String conteudorec) {
        this.conteudorec = conteudorec;
    }

    public int getStatus() {
        return status;
    }

    public void setStatus(int status) {
        this.status = status;
    }

    public String getDescrocorr() {
        return descrocorr;
    }

    public void setDescrocorr(String descrocorr) {
        this.descrocorr = descrocorr;
    }

    public String getIntegracao() {
        return integracao;
    }

    public void setIntegracao(String integracao) {
        this.integracao = integracao;
    }
}

And the LogIntegration class like this:

package com.model;

import java.io.Serializable;
import java.sql.Date;

public class LogIntegracao implements Serializable {
    /**
     * 
    */
    private static final long serialVersionUID = 1L;

    private int id_logint;
    private int filial;
    private Date data;
    private int sequencia;
    private String integracao;
    private String chave;
    private String inconsistencia;
    private int status;

    public int getId_logint() {
        return id_logint;
    }

    public void setId_logint(int id_logint) {
        this.id_logint = id_logint;
    }

    public int getFilial() {
        return filial;
    }

    public void setIdFilial(int filial) {
        this.filial = filial;
    }

    public Date getData() {
        return data;
    }

    public void setData(Date data) {
        this.data = data;
    }

    public int getSequencia() {
        return sequencia;
    }

    public void setSequencia(int sequencia) {
        this.sequencia = sequencia;
    }

    public String getIntegracao() {
        return integracao;
    }

    public void setIntegracao(String integracao) {
        this.integracao = integracao;
    }

    public String getChave() {
        return chave;
    }

    public void setChave(String chave) {
        this.chave = chave;
    }

    public String getInconsistencia() {
        return inconsistencia;
    }

    public void setInconsistencia(String inconsistencia) {
        this.inconsistencia = inconsistencia;
    }

    public int getStatus() {
        return status;
    }

    public void setStatus(int status) {
        this.status = status;
    }

}

And this is the button code on the screen (# {item} is of type Log and # {LogMB.serv} of LogIntegracao type):

<p:column headerText="Opções"
    style="width:150px;text-align: center">
    <p:commandButton icon="ui-icon-wrench"
      title="Reprocessar Inconsistencia"
      action="#{LogMB.exibeInconsistencias}">
      <f:setPropertyActionListener value="#{item}"
          target="#{LogMB.serv}" />
    </p:commandButton>
</p:column>

java jsf

asked by anonymous 21.11.2017 / 21:00

1 answer

How to show only lines that appear more than x times. (shell script) How to keep an always active div

score 2 · Answer 1

This can be solved in many ways, but I'm inclined to think about the design and reuse of the class Log.

interface Log {
    /* 
     * Coloque aqui os campos (final static) que tenha em comum 
     * com as classes LogIntegracao e Log
     */

    //Coloque os métodos das que tenha em comum
}

public class LogImp implements Log {
    //Implementação da sua class Log descrita acima
}

public class LogIntegracao implements Serializable, Log {
    //Impelentação da sua class LogIntegracao descrita acima
}

From what I understand about the error:

AVISO: Cannot convert com.model.Log@5a86506a of type class com.model.Log to class com.model.LogIntegracao

The classes are not of the same type, causing the classes to implement the same interface where, in theory, we could instantiate the two classes in a common type:

Log logImp = new LogImp();                //instância do LogImp do tipo Log
Log logIntegracao = new LogIntegracao();  //instância do LogIntegracao do tipo Log

Whenever we design classes in java we should worry about the following hint:

If you are adding instances of a user-defined class as elements to an ArrayList, replace your equals () method or else its contains() or remove() methods may not behave as expected. [ MALA GUPTA, 2015 , p. 281]

Note : more details here .

Note : It is common sense to group the fields of the same type:

private int id_logint;
private int filial;
private int status;
private int id_integracao;
private String conteudoenv;
private String conteudorec;
private String descrocorr;
private String integracao;
private Date dataexecucao;

I hope I have helped!

Reference :
[MALA GUPTA, 2015], OCP Java SE 7 Programmer II Certification Guide : PREPARE FOR THE 1ZO-804 EXAM