graph with database
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Flip_novidade
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Published on 2012-11-27T10:45:33Z
Indexed on
2012/11/27
11:04 UTC
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primefaces
I need to make two graphs with data coming from the database. I do not know where I am going wrong. If someone can show me the correct way, or provide any examples. must be two graphs, a graph of a specific student another graph of all students
thank you
public class NotasBean {
private Notas notas;
private Notas selectedNotas;
private List<Notas> filtroNotass;
public Notas getNotas() {
return notas;
}
public void setNotas(Notas notas) {
this.notas = notas;
}
public Notas getSelectedNotas() {
return selectedNotas;
}
public void setSelectedNotas(Notas selectedNotas) {
this.selectedNotas = selectedNotas;
}
public List<Notas> getFiltroNotass() {
return filtroNotass;
}
public void setFiltroNotass(List<Notas> filtroNotass) {
this.filtroNotass = filtroNotass;
}
public void prepararAdicionarNotas(){
notas = new Notas();
}
public void adicionarNotas(){
dao.NotasDao obj_dao = new dao.NotasDao();
obj_dao.save(notas);
}
}
package dao;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import model.Aluno;
import model.Notas;
import model.Notas;
public class NotasDao {
private Conexao obj_conexao;
public NotasDao() {
obj_conexao = new Conexao();
}
public List<Notas> list() {
List<Notas> array_registros = new ArrayList<Notas>();
try {
String sql = "Select alu_in_ra, dis_st_sigla, ald_fl_p1, ald_fl_p2, ald_fl_p3, ald_fl_trab1, ald_fl_trab2 from cad_aluno_disciplina";
Statement comando_sql = (Statement) obj_conexao.getConexao()
.createStatement();
ResultSet obj_result = comando_sql.executeQuery(sql);
while (obj_result.next()) {
Notas obj_notas = new Notas();
obj_notas.setAlura(obj_result.getInt("alu_in_ra"));
obj_notas.setDiscsigla(obj_result.getString("dis_st_sigla"));
obj_notas.setP1(obj_result.getInt("ald_fl_p1"));
obj_notas.setP2(obj_result.getInt("ald_fl_p2"));
obj_notas.setP3(obj_result.getInt("ald_fl_p3"));
obj_notas.setTrb1(obj_result.getInt("ald_fl_trab1"));
obj_notas.setTrb2(obj_result.getInt("ald_fl_trab2"));
array_registros.add(obj_notas);
}
} catch (Exception e) {
System.out.println("Erro no select" + e.getMessage());
} finally {
obj_conexao.fecharConexao();
}
return array_registros;
}
public void select(Aluno obj_aluno){
FacesContext mensagem = FacesContext.getCurrentInstance();
try{
String comando_sql = "Select alu_in_ra, dis_st_sigla, ald_fl_p1, ald_fl_p2, ald_fl_p3, ald_fl_trab1, ald_fl_trab2 from cad_aluno_disciplina where alu_in_ra=?";
PreparedStatement obj_sql = (PreparedStatement)
obj_conexao.getConexao().prepareStatement(comando_sql);
obj_sql.setInt(1, obj_aluno.getRa());
obj_sql.executeUpdate();
mensagem.addMessage(null, new FacesMessage(FacesMessage.SEVERITY_WARN, "Erro ao selecionar aluno!","Snif"));
}catch(Exception e){
mensagem.addMessage(null,
new FacesMessage(FacesMessage.SEVERITY_FATAL, "Erro na inclusão: "+e.getMessage()," Ocoreu o erro: "+e.getMessage()));
}finally{
obj_conexao.fecharConexao();
}
return;
}
}//fecha a classe
package model;
import java.io.Serializable;
public class Notas implements Serializable{
private static final long serialVersionUID = 1L;
private int alura;
private String discsigla;
private float p1;
private float p2;
private float p3;
private float trb1;
private float trb2;
public Notas() {
}
public Notas (int alura, String discsigla, float p1, float p2, float p3, float trb1, float trb2){
super();
this.alura=alura;
this.discsigla=discsigla;
this.p1=p1;
this.p2=p2;
this.p3=p3;
this.trb1=trb1;
this.trb2=trb2;
}
public int getAlura() {
return alura;
}
public void setAlura(int alura) {
this.alura = alura;
}
public String getDiscsigla() {
return discsigla;
}
public void setDiscsigla(String discsigla) {
this.discsigla = discsigla;
}
public float getP1() {
return p1;
}
public void setP1(float p1) {
this.p1 = p1;
}
public float getP2() {
return p2;
}
public void setP2(float p2) {
this.p2 = p2;
}
public float getP3() {
return p3;
}
public void setP3(float p3) {
this.p3 = p3;
}
public float getTrb1() {
return trb1;
}
public void setTrb1(float trb1) {
this.trb1 = trb1;
}
public float getTrb2() {
return trb2;
}
public void setTrb2(float trb2) {
this.trb2 = trb2;
}
}
<p:panel header="Grafico Notas Aluno" style="width: 550px">
<p:lineChart id="linear" value="#{notasDao.aluno.alura}" var="notas"
xfield="#{notas.alura}" height="300px" width="500px"
style="chartStyle">
<p:chartSeries label="Prova 1" value="#{notas.p1}" />
<p:chartSeries label="Prova 2" value="#{notas.p2}" />
<p:chartSeries label="Prova 3" value="#{notas.p3}" />
<p:chartSeries label="Trabalho 1" value="#{notas.trb1}" />
<p:chartSeries label="Trabalho 2" value="#{notas.trb2}" />
</p:lineChart>
</p:panel>
<p:panel header="Grafico Notas" style="width: 550px">
<p:lineChart id="linear" value="#{notasDao.natas}" var="notas"
xfield="#{notas.p1}" height="300px" width="500px"
style="chartStyle">
<p:chartSeries label="Prova 1" value="#{notas.p1}" />
<p:chartSeries label="Prova 2" value="#{notas.p2}" />
<p:chartSeries label="Prova 3" value="#{notas.p3}" />
<p:chartSeries label="Trabalho 1" value="#{notas.trb1}" />
<p:chartSeries label="Trabalho 2" value="#{notas.trb2}" />
</p:lineChart>
</p:panel>
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