Upload kontroler

package file;

import java.sql.Timestamp;

import javax.annotation.PostConstruct;
import javax.enterprise.context.RequestScoped;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.inject.Inject;
import javax.inject.Named;

import org.primefaces.model.UploadedFile;

import com.jsfcourse.login.ClientData;

import dao.FileDAO;
import dao.FileListDAO;
import entities.File;
import entities.FileList;

@Named
@RequestScoped
public class FileListUploadBB {
    private FileList fileList = new FileList();
    private UploadedFile file;
    private static final String PAGE_STAY_AT_THE_SAME = "/pages/files/upload.xhtml";

    @Inject
    FileListDAO fListDAO;

    @Inject
    FileDAO fileDAO;

    @Inject
    ClientData clientData;

    @PostConstruct
    public void init() {

    }

    public boolean validate() {
        return true;
    }

    public String upload() {
        FacesContext ctx = FacesContext.getCurrentInstance();
        if(file == null || file.getFileName() == null) {
            ctx.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_ERROR,
                    "Nie wybrałeś pliku", null));
        }
        else {
            if(validate()) {
                File fileToUpload = new File();
                fileToUpload.setFileBinary(file.getContents());
                fileToUpload.setFilename(file.getFileName());
                fileDAO.create(fileToUpload);

                File f = fileDAO.getLastAddedObject();
                fileList.setFile(f);
                fileList.setAddedTime(new Timestamp(System.currentTimeMillis()));
                fileList.setUser(clientData.getClient());
                fListDAO.create(fileList);

                ctx.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO,
                        "Utworzono plik!", null));

                fileList = null;
                file = null;
                return PAGE_STAY_AT_THE_SAME;
            }
        }

        return null;
    }

    public FileList getFileList() {
        return fileList;
    }

    public void setFileList(FileList fileList) {
        this.fileList = fileList;
    }

    public UploadedFile getFile() {
        return file;
    }

    public void setFile(UploadedFile file) {
        this.file = file;
    }

}