Bean

package escola.musica.bean;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.faces.bean.ManagedBean;
import javax.faces.context.FacesContext;

import org.primefaces.event.DragDropEvent;
import org.primefaces.model.DefaultStreamedContent;
import org.primefaces.model.StreamedContent;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import escola.musica.dao.GenericDao;
import escola.musica.modelo.Aluno;
import escola.musica.modelo.Matricula;
import escola.musica.servico.MatriculaServico;

@Controller("turmaBean")
@Scope("session")
@ManagedBean
public class TurmaBean implements Serializable{

    private static final long serialVersionUID = 5759339104756147807L;

    private List<Matricula> matriculas;
    private List<Matricula> matriculasInseridas =  new ArrayList<Matricula>();

    @Autowired
    private MatriculaServico matriculaServico;

    public void iniciarBean()
    {
        matriculas =  matriculaServico.listarTodos();
    }

    public StreamedContent getImagemAluno()
    {
        Map<String, String> mapaParametro = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap();
        String idAluno = mapaParametro.get("id_aluno");
        if(idAluno != null)
        {
            Aluno alunoBanco = new GenericDao<Aluno>(Aluno.class).obterPorId(new Integer(idAluno));
            return alunoBanco.getImagem();
        }
        return new DefaultStreamedContent();
    }

    public void onMatriculaDrop(DragDropEvent event)
    {
        Matricula matricula = (Matricula) event.getData();
        matriculas.remove(matricula);
        matriculasInseridas.add(matricula);
    }

    public List<Matricula> getMatriculas() {
        return matriculas;
    }

    public void setMatriculas(List<Matricula> matriculas) {
        this.matriculas = matriculas;
    }

    public MatriculaServico getMatriculaServico() {
        return matriculaServico;
    }

    public void setMatriculaServico(MatriculaServico matriculaServico) {
        this.matriculaServico = matriculaServico;
    }

    public List<Matricula> getMatriculasInseridas() {
        return matriculasInseridas;
    }

    public void setMatriculasInseridas(List<Matricula> matriculasInseridas) {
        this.matriculasInseridas = matriculasInseridas;
    }

    public static long getSerialversionuid() {
        return serialVersionUID;
    }


}