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게으른로드 된 DataTable of Primesfaces에서 새로 고침하는 데 문제가 있습니다. 3.0.M4를 사용하고 있습니다.Primeface dataTable이 내용을 새로 고치지 않습니다.
예를 들어 필터가있는 세 가지 클래스가 있습니다. 게으른로드만으로 예제를 시도했지만 데이터가 컨트롤러에 다시로드되지 않았습니다. 그래서 두 번째 예제를 필터링과 함께 사용했습니다. 컨트롤러에서 다시로드 이벤트가 발생합니다 (로거는 데이터로드 중입니다). 그러나 새로운 데이터 :-(. 왜?
여기에 도움이 될 수 있습니다 누구?
친절 감사를 표시하지 않습니다 표!
LazyCarDataModel
package org.jboss.as.quickstarts.helloworld;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.primefaces.model.LazyDataModel;
import org.primefaces.model.SortOrder;
/**
* Dummy implementation of LazyDataModel that uses a list to mimic a real datasource like a database.
*/
public class LazyCarDataModel extends LazyDataModel<Car> {
private static final long serialVersionUID = 1L;
private List<Car> datasource;
public LazyCarDataModel(List<Car> datasource) {
this.datasource = datasource;
}
@Override
public Car getRowData(String rowKey) {
for(Car car : datasource) {
if(car.getModel().equals(rowKey))
return car;
}
return null;
}
@Override
public Object getRowKey(Car car) {
return car.getModel();
}
@Override
public List<Car> load(int first, int pageSize, String sortField, SortOrder sortOrder, Map<String,String> filters) {
List<Car> data = new ArrayList<Car>();
//filter
for(Car car : datasource) {
boolean match = true;
for(Iterator<String> it = filters.keySet().iterator(); it.hasNext();) {
try {
String filterProperty = it.next();
String filterValue = filters.get(filterProperty);
String fieldValue = String.valueOf(car.getClass().getField(filterProperty).get(car));
if(filterValue == null || fieldValue.startsWith(filterValue)) {
match = true;
}
else {
match = false;
break;
}
} catch(Exception e) {
match = false;
}
}
if(match) {
data.add(car);
}
}
//sort
if(sortField != null) {
Collections.sort(data, new LazySorter(sortField, sortOrder));
}
//rowCount
int dataSize = data.size();
this.setRowCount(dataSize);
//paginate
if(dataSize > pageSize) {
try {
return data.subList(first, first + pageSize);
}
catch(IndexOutOfBoundsException e) {
return data.subList(first, first + (dataSize % pageSize));
}
}
else {
return data;
}
}
}
LazyTableBean
package org.jboss.as.quickstarts.helloworld;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.UUID;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
import org.primefaces.model.LazyDataModel;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@Named
@SessionScoped
public class LazyTableBean implements Serializable {
private static final long serialVersionUID = 1L;
private final static Logger logger = LoggerFactory.getLogger(LazyTableBean.class);
private final static String[] colors;
private final static String[] manufacturers;
private List<Car> cars;
static {
colors = new String[10];
colors[0] = "Black";
colors[1] = "White";
colors[2] = "Green";
colors[3] = "Red";
colors[4] = "Blue";
colors[5] = "Orange";
colors[6] = "Silver";
colors[7] = "Yellow";
colors[8] = "Brown";
colors[9] = "Maroon";
manufacturers = new String[10];
manufacturers[0] = "Mercedes";
manufacturers[1] = "BMW";
manufacturers[2] = "Volvo";
manufacturers[3] = "Audi";
manufacturers[4] = "Renault";
manufacturers[5] = "Opel";
manufacturers[6] = "Volkswagen";
manufacturers[7] = "Chrysler";
manufacturers[8] = "Ferrari";
manufacturers[9] = "Ford";
}
private LazyCarDataModel lazyModel;
private Car selectedCar;
public LazyTableBean() {
cars = new ArrayList<Car>();
populateLazyRandomCars(cars, 100000);
lazyModel = new LazyCarDataModel(cars);
}
public Car getSelectedCar() {
return selectedCar;
}
public void setSelectedCar(Car selectedCar) {
this.selectedCar = selectedCar;
}
public LazyDataModel<Car> getLazyModel() {
return lazyModel;
}
private void populateLazyRandomCars(List<Car> list, int size) {
System.out.println("Loading data");
for(int i = 0 ; i < size ; i++) {
list.add(new Car(getRandomModel(), getRandomYear(), getRandomManufacturer(), getRandomColor()));
}
}
private String getRandomColor() {
return colors[(int) (Math.random() * 10)];
}
private String getRandomManufacturer() {
return manufacturers[(int) (Math.random() * 10)];
}
private int getRandomYear() {
return (int) (Math.random() * 50 + 1960);
}
private String getRandomModel() {
return UUID.randomUUID().toString().substring(0, 8);
}
}
그리고 여기 xhtml :
<?xml version="1.0" encoding="UTF-8"?>
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui" template="template-default.xhtml">
<ui:define name="content">
<h:form>
<p:dataTable var="car" value="#{lazyTableBean.lazyModel}"
paginator="true" rows="10" lazy="true"
paginatorTemplate="{RowsPerPageDropdown} {FirstPageLink} {PreviousPageLink} {CurrentPageReport} {NextPageLink} {LastPageLink}"
rowsPerPageTemplate="5,10,15"
selection="#{lazyTableBean.selectedCar}" selectionMode="single">
<p:ajax event="rowSelect"
listener="#{lazyTableBean.onRowSelect}" update=":form:display"
oncomplete="carDialog.show()" />
<p:column headerText="Model">
<h:outputText value="#{car.model}" />
</p:column>
<p:column headerText="Year">
<h:outputText value="#{car.year}" />
</p:column>
<p:column headerText="Manufacturer">
<h:outputText value="#{car.manufacturer}" />
</p:column>
<p:column headerText="Color">
<h:outputText value="#{car.color}" />
</p:column>
</p:dataTable>
<p:dialog header="Car Detail" widgetVar="carDialog"
resizable="false" width="200" showEffect="explode"
hideEffect="explode">
<h:panelGrid id="display" columns="2" cellpadding="4">
<f:facet name="header">
<p:graphicImage
value="/images/cars/#{lazyTableBean.selectedCar.manufacturer}.jpg" />
</f:facet>
<h:outputText value="Model:" />
<h:outputText value="#{lazyTableBean.selectedCar.model}" />
<h:outputText value="Year:" />
<h:outputText value="#{lazyTableBean.selectedCar.year}" />
<h:outputText value="Manufacturer:" />
<h:outputText
value="#{lazyTableBean.selectedCar.manufacturer}" />
<h:outputText value="Color:" />
<h:outputText value="#{lazyTableBean.selectedCar.color}" />
</h:panelGrid>
</p:dialog>
</h:form>
</ui:define>
</ui:composition>