Paginación funcionando

jsf/src/main/java/es/uvigo/esei/xcs/jsf/PetDetailsManagedBean.java

 package es.uvigo.esei.xcs.jsf;
 
 import javax.annotation.PostConstruct;
+import javax.ejb.EJBException;
 import javax.inject.Inject;
 import javax.inject.Named;
+import javax.faces.application.FacesMessage;
 import javax.faces.context.FacesContext;
 import javax.faces.view.ViewScoped;
 
@@ -50,7 +52,7 @@ public class PetDetailsManagedBean implements Serializable{
         if (id != null) {
             this.pet = petService.get(Long.parseLong(id));
         }
-        this.allVaccines = vaccineService.list(0, 100); // ajustar paginación
+        this.allVaccines = vaccineService.list(0, 100);
     }
 
     public Pet getPet() {
@@ -77,28 +79,28 @@ public class PetDetailsManagedBean implements Serializable{
         this.vaccinationDate = vaccinationDate;
     }
 
-    // Método para vacunar
     public String vaccinate() {
-        if (selectedVaccineId == null || vaccinationDate == null /*|| vaccinationDate.isEmpty()*/) {
+        if (selectedVaccineId == null || vaccinationDate == null) {
             FacesContext.getCurrentInstance().addMessage(null,
                     new javax.faces.application.FacesMessage("Debe seleccionar vacuna y fecha"));
             return null;
         }
-
+        
         try {
-            //Date date = new SimpleDateFormat("yyyy-MM-dd").parse(vaccinationDate);
             Vaccination v = vaccinationService.create(pet.getId(), selectedVaccineId, vaccinationDate);
-            // refrescar la mascota para mostrar la nueva vacunación
             this.pet = petService.get(pet.getId());
             FacesContext.getCurrentInstance().addMessage(null,
-                    new javax.faces.application.FacesMessage("Vacunación creada correctamente"));
-        } /*catch (ParseException e) {
-            FacesContext.getCurrentInstance().addMessage(null,
-                    new javax.faces.application.FacesMessage("Formato de fecha inválido"));
-        }*/ catch (IllegalArgumentException e) {
-            FacesContext.getCurrentInstance().addMessage(null,
-                    new javax.faces.application.FacesMessage(e.getMessage()));
+                    new FacesMessage("Vacunación creada correctamente"));
+        } catch (EJBException e) {
+            Throwable cause = e.getCause();
+            if (cause instanceof IllegalArgumentException) {
+                FacesContext.getCurrentInstance().addMessage(null,
+                        new FacesMessage(cause.getMessage()));
+            } else {
+                FacesContext.getCurrentInstance().addMessage(null,
+                        new FacesMessage("Error inesperado al crear vacunación"));
+            }
         }
-        return null; // recargar la misma página
+        return null;
     }
 }

jsf/src/main/java/es/uvigo/esei/xcs/jsf/PetManagedBean.java

 package es.uvigo.esei.xcs.jsf;
 
+import java.io.Serializable;
 import java.util.Date;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
 
+import javax.annotation.PostConstruct;
 import javax.enterprise.context.RequestScoped;
 import javax.faces.context.FacesContext;
+import javax.faces.view.ViewScoped;
 import javax.inject.Inject;
 import javax.inject.Named;
 
+import org.primefaces.model.FilterMeta;
+import org.primefaces.model.LazyDataModel;
+import org.primefaces.model.SortMeta;
+
 import es.uvigo.esei.xcs.domain.entities.AnimalType;
 import es.uvigo.esei.xcs.domain.entities.Pet;
 import es.uvigo.esei.xcs.service.PetService;
 
 @Named("pet")
-@RequestScoped
-public class PetManagedBean {
+//@RequestScoped
+@ViewScoped
+public class PetManagedBean implements Serializable{
+	private static final long serialVersionUID = 1L;
+
 	@Inject
 	private PetService service;
 	
@@ -27,6 +38,29 @@ public class PetManagedBean {
 	
 	private String errorMessage;
 	
+	
+	private LazyDataModel<Pet> pets;
+
+	@PostConstruct
+	public void init() {
+	    pets = new LazyDataModel<Pet>() {
+	        @Override
+	        public List<Pet> load(int first, int pageSize, Map<String, SortMeta> sortBy, Map<String, FilterMeta> filterBy) {
+	            return service.getAll(first, pageSize);
+	        }
+
+	        @Override
+	        public int count(Map<String, FilterMeta> filterBy) {
+	            return service.countAll();
+	        }
+	    };
+	}
+
+
+    public LazyDataModel<Pet> getPets() {
+        return pets;
+    }
+	
 	public String getName() {
 		return name;
 	}
@@ -73,11 +107,11 @@ public class PetManagedBean {
 		this.id = id;
 	}
 	
-	public List<Pet> getPets() {
+	/*public List<Pet> getPets() {
 		List<Pet> list = this.service.getAll(0, 100);
 		System.out.println(list);
 		return list;
-	}
+	}*/
 	
 	public String edit(Long petId) {
 		final Pet pet = this.service.get(petId);

jsf/src/main/webapp/vet/petDetails.xhtml

@@ -42,7 +42,8 @@
 			<p:commandButton value="Open Dialog" />
 			<h3>Registrar nueva vacunación</h3>
 			<h:form>
-				<!--<h:messages globalOnly="true" layout="table"  style="color:red;" />-->
+			    <h:messages globalOnly="true" style="color:red;" />
+
 			    <h:panelGrid columns="2">
 			        <h:outputLabel value="Vacuna:" for="vaccine"/>
 			        <h:selectOneMenu value="#{petDetails.selectedVaccineId}" id="vaccine">

jsf/src/main/webapp/vet/pets.xhtml

 <html xmlns="http://www.w3.org/1999/xhtml"
       xmlns:h="http://xmlns.jcp.org/jsf/html"
+	  xmlns:p="http://primefaces.org/ui"
       xmlns:f="http://xmlns.jcp.org/jsf/core">
 <h:head>
     <title>Mis Mascotas</title>
 </h:head>
 <h:body>
 <h:form>
-    <h:dataTable value="#{pet.pets}" var="p" border="1">
-        <h:column>
-            <f:facet name="header">Nombre</f:facet>
-            #{p.name}
-        </h:column>
-        <h:column>
-            <f:facet name="header">Nacimiento</f:facet>
-            #{p.birth}
-        </h:column>
-        <h:column>
-            <f:facet name="header">Tipo</f:facet>
-            #{p.animal}
-        </h:column>
-        <h:column>
-            <f:facet name="header">Acción</f:facet>
-			<h:commandButton value="#{pet.isAssignedToMe(p) ? 'Desasignar' : 'Asignar'}"
-			                 action="#{pet.toggleAssignment(p)}"/>
-        </h:column>
-    </h:dataTable>
+    <!--NUEVA TABLA-->
+	<p:dataTable value="#{pet.pets}" var="p" paginator="true" rows="10" lazy="true">
+	    <p:column headerText="Nombre">#{p.name}</p:column>
+	    <p:column headerText="Nacimiento">#{p.birth}</p:column>
+	    <p:column headerText="Tipo">#{p.animal}</p:column>
+	    <p:column headerText="Acción">
+	        <p:commandButton value="#{pet.isAssignedToMe(p) ? 'Desasignar' : 'Asignar'}"
+	                         action="#{pet.toggleAssignment(p)}" update="@this"/>
+	    </p:column>
+	</p:dataTable>
+
 
     <h:messages globalOnly="true"/>
 </h:form>

service/src/main/java/es/uvigo/esei/xcs/service/PetService.java

@@ -55,12 +55,18 @@ public class PetService {
 			throw new EJBAccessException("Pet's owner is not the current principal");
 		}
 	}*/
+	public int countAll() {
+	    Long count = em.createQuery("SELECT COUNT(p) FROM Pet p", Long.class)
+	                   .getSingleResult();
+	    return count.intValue();
+	}
+	
 	
 	public Pet get(Long id) {
 		return em.find(Pet.class, id);
 	}
 	
-	public List<Pet> getAll(int page, int pageSize) {
+	/*public List<Pet> getAll(int page, int pageSize) {
 		if (page < 0) {
 			throw new IllegalArgumentException("The page can't be negative");
 		}
@@ -71,8 +77,19 @@ public class PetService {
 	    		.setFirstResult(page * pageSize)
 				.setMaxResults(pageSize)
 				.getResultList();
+	}*/
+	
+	public List<Pet> getAll(int first, int pageSize) {
+	    if (first < 0) throw new IllegalArgumentException("First can't be negative");
+	    if (pageSize <= 0) throw new IllegalArgumentException("Page size must be positive");
+
+	    return em.createQuery("SELECT p FROM Pet p", Pet.class)
+	             .setFirstResult(first)   // no multiplicar por pageSize
+	             .setMaxResults(pageSize)
+	             .getResultList();
 	}
 
+
 	
 	/**
 	 * Returns the complete list of pets of the current owner.