Dynamic tree from database
Hi,
I'm trying to generate a dynamic tree from database oracle. I'm using richfaces 4.0, jsf 2.0, jboss 6 and eclipse helios.
My table (building) :
BAR_ID number(5)
BAR_NOM varchar2(50)
BAR_NIVEAU number(5)
BAR_PERE number(5) (auto-join with BAR_ID)
My entity bean :
package com.galhauban.patrimoine.batiment;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
@Entity
@Table(name="BATI_REF")
@SequenceGenerator(name = "seqbatiref", sequenceName = "SEQ_BATI_REF")
public class RefItemEntity {
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "seqbatiref")
@Column(name = "bar_id")
private Integer id;
@Column(name = "bar_name")
private String nom;
@Column(name = "bar_niveau")
private Integer niveau;
@Column(name = "bar_pere")
private Integer pere;
public RefItemEntity(){}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getNom() {
return nom;
}
public void setNom(String nom) {
this.nom = nom;
}
public Integer getNiveau() {
return niveau;
}
public void setNiveau(Integer niveau) {
this.niveau = niveau;
}
public Integer getPere() {
return pere;
}
public void setPere(Integer pere) {
this.pere = pere;
}
}
My stateless bean :
package com.galhauban.patrimoine.batiment;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.ejb.Local;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
@Stateless(name="refItemBean")
@Local(com.galhauban.patrimoine.batiment.RefItemLocal.class)
public class RefItemBean implements RefItemLocal,Serializable {
@PersistenceContext (unitName = "EJB-Patrimoine", name = "EJB-Patrimoine")
private EntityManager em;
private RefItemEntity item;
private static final long serialVersionUID = 1L;
private List<RefItemEntity> items;
public RefItemBean(){};
public List<RefItemEntity> refItemList(){
try {
System.out.println("*** Entre dans RefItemBean ");
Query query = em.createQuery("select b1 from RefItemEntity b1");
List<RefItemEntity> items = (List<RefItemEntity>) query.getResultList();
System.out.println("*** Nb element : "+items.size());
return items;
}
catch (Exception e) {
System.out.println("Voir pb: " + e.getMessage());
return null;
}
}
public List<RefItemEntity> getItems() {
return items;
}
public void setItems(List<RefItemEntity> items) {
this.items = items;
}
public RefItemEntity getItem() {
return item;
}
public void setItem(RefItemEntity item) {
this.item = item;
}
public EntityManager getEm() {
return em;
}
public void setEm(EntityManager em) {
this.em = em;
}
}
The interface :
package com.galhauban.patrimoine.batiment;
import java.util.List;
import javax.ejb.Local;
@Local
public interface RefItemLocal {
public List<RefItemEntity> refItemList();
public RefItemEntity getItem();
public void setItem(RefItemEntity item);
}
The managed bean :
package com.galhauban.patrimoine.batiment;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.inject.Named;
import org.richfaces.component.UITree;
import org.richfaces.event.TreeSelectionChangeEvent;
import org.richfaces.model.TreeNode;
import org.richfaces.model.TreeNodeImpl;
@ManagedBean(name="refItemController")
@SessionScoped
public class RefItemController implements Serializable {
private static final long serialVersionUID = 1L;
@EJB
private RefItemLocal items;
private List<RefItemEntity> liste;
private Tree myTree = new Tree();
private TreeNode currentSelection = null;
public RefItemController(){};
public List<RefItemEntity> getListe() {
return liste;
}
public void setListe(List<RefItemEntity> liste) {
this.liste = liste;
}
public RefItemLocal getItems() {
return items;
}
public void setItems(RefItemLocal items) {
this.items = items;
}
public Tree getMyTree() {
return myTree;
}
public void setMyTree(Tree myTree) {
this.myTree = myTree;
}
public String doSearch() {
try {
liste = items.refItemList();
System.out.println("*** Liste taille : " + liste.size());
for (RefItemEntity objet : liste){
Tree pere = new Tree();
if (objet.getPere() == null) {
pere.setName(objet.getNom());
pere.setType("arbo");
myTree.addChild(objet.getId(), pere);
System.out.println("**************************** sommet : " + pere.getName());
}
else{
pere.setName(objet.getNom());
pere.setType("arbo");
pere.addChild(objet.getId(), pere);
System.out.println("**************************** Pere en cours : " + pere.getName());
}
for (RefItemEntity objet2 : liste){
if(objet2.getPere()==objet.getId())
{
System.out.println("boucle2 : " + pere.getName());
Tree fils = new Tree();
fils.setType("arbo");
fils.setName(objet2.getNom());
pere.addChild(objet2.getId(), fils);
System.out.println("*** Pere : " + pere.getName());
System.out.println("*** Fils : " + fils.getName());
}
}
}
return "referentiel.found";
}
catch (Exception ex){
System.out.println("pb : " + ex.getMessage());
ex.printStackTrace();
return null;
}
}
public void selectionChanged(TreeSelectionChangeEvent selectionChangeEvent) {
// considering only single selection
List<Object> selection = new ArrayList<Object>(selectionChangeEvent.getNewSelection());
Object currentSelectionKey = selection.get(0);
UITree tree = (UITree) selectionChangeEvent.getSource();
Object storedKey = tree.getRowKey();
tree.setRowKey(currentSelectionKey);
currentSelection = (TreeNode) tree.getRowData();
tree.setRowKey(storedKey);
}
public TreeNode getCurrentSelection() {
return currentSelection;
}
public void setCurrentSelection(TreeNode currentSelection) {
this.currentSelection = currentSelection;
}
}
My tree.class
package com.galhauban.patrimoine.batiment;
import org.richfaces.model.TreeNodeImpl;
public class Tree extends TreeNodeImpl{
private String name;
private String type;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String toString() {
return this.name;
}
}
My xhtml file :
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:ui="http://java.sun.com/jsf/facelets">
<h:head></h:head>
<body>
<rich:panel>
<f:facet name="header">
Referentiel Batiment
</f:facet>
<h:form>
<rich:tree id="tree" nodeType="#{node.type}" var="node"
value="#{refItemController.myTree}" toggleType="client"
selectionType="ajax"
selectionChangeListener="#{refItemController.selectionChanged}">
<rich:treeNode type="arbo">
#{node.name}
</rich:treeNode>
</rich:tree>
</h:form>
</rich:panel>
</body>
</html>
This the result :
batiment
ecole
sport
administratif
ferry
culte
hotel de ville
But i would like something like that :
batiment
ecole
ferry
sport
administratif
hotel de ville
culte
Does anyone have an idea or an example?
Thanks in advance
kind regards
couse1
