当使用roweditor在primefaces datatable中更改值时，列表中的对象不会更新

Question

我正在使用primefaces数据表和roweditor来更新数据库。

当我点击roweditor时，它会使列按预期编辑，并更改值。

当我单击roweditor上的accept按钮时，我从事件中获取对象并将其转换为实体并将该对象传递给更新数据库的模型类。

从调试中我发现，当我从CView Bean中的onRowEdit方法中的事件中获取Project对象时，我在数据表上的rowedit模式中更改的值是在Project实体中设置的，但是我得到的Project对象事件是应用任何更改之前的对象。

换句话说，当我编辑数据表行并更改了值时，Project实体会使用更改的值进行更新，但是我从事件中获得的项目对象没有对数据表进行的更改。

我不知道我缺少什么或不理解，请帮忙吗？

以下是有关设置和代码的更多信息

我正在使用Primefaces 5.1 Tomcat 7.0.53 Java EE 7

我的数据表：

        <p:dataTable var="customer" 
                     id="customerdatatable" 
                     style="font-size: 12px;" 
                     value="#{cView.list}"
                     editable="#{cView.modify}"
                     rowKey="#{customer.hashCode}"
                     emptyMessage="No Customers found."
                     widgetVar="custdtwv"
                     scrollable="true"
                     scrollHeight="7%">
            <p:ajax event="rowEdit" 
                    listener="#{cView.onRowEdit}"/>

            <p:column headerText="Customer" 
                      filterBy="#{customer.project}"
                      filterMatchMode="contains">
                <p:cellEditor>
                    <f:facet name="output">
                        <h:outputText value="#{customer.project}"/>
                    </f:facet>
                    <f:facet name="input">
                        <p:inputText value="#{customer.project}" 
                                     style="width:96%;"/>
                    </f:facet>
                </p:cellEditor>
            </p:column>

            <p:column headerText="Project Code" 
                      filterBy="#{customer.projectCode}"
                      filterMatchMode="contains">
                <h:outputText value="#{customer.projectCode}"/>
            </p:column>

            <p:column headerText="Contact">
                <p:cellEditor>
                    <f:facet name="output">
                        <h:outputText value="#{customer.contact}"/>
                    </f:facet>
                    <f:facet name="input">
                        <p:inputText value="#{customer.contact}" 
                                     style="width:96%;"/>
                    </f:facet>
                </p:cellEditor>
            </p:column>

            <p:column headerText="Phone">
                <p:cellEditor>
                    <f:facet name="output">
                        <h:outputText value="#{customer.phone}"/>
                    </f:facet>
                    <f:facet name="input">
                        <p:inputText value="#{customer.phone}" 
                                     style="width:96%;"/>
                    </f:facet>
                </p:cellEditor>
            </p:column>

            <p:column headerText="Email">
                <p:cellEditor>
                    <f:facet name="output">
                        <h:outputText value="#{customer.email1}"/>
                    </f:facet>
                    <f:facet name="input">
                        <p:inputText value="#{customer.email1}" 
                                     style="width:96%;"/>
                    </f:facet>
                </p:cellEditor>
            </p:column>


            <p:column headerText="Address">
                <p:cellEditor>
                    <f:facet name="output">
                        <h:outputText value="#{customer.address}"/>
                    </f:facet>
                    <f:facet name="input">
                        <p:inputText value="#{customer.address}" 
                                     style="width:96%;"/>
                    </f:facet>
                </p:cellEditor>
            </p:column>

            <p:column headerText="Action"
                      style="width:32px">
                <p:rowEditor />
            </p:column>
        </p:dataTable>

我的豆子：

@ManagedBean
@ViewScoped
public class CView implements Serializable {

private List<Project> list;

private List<Project> selected = new ArrayList<>();

private List<Project> filtered;

private Model model;

private boolean modify;

@PostConstruct
public void init() {
    model = new Model();

    modify = User.getPermissions().checkPermission(Permissions.CUSTMANAGE);
}

public List<Project> getList() {
    list = model.getList();

    return list;
}

public void setList(List<Project> list) {
    this.list = list;
}

public List<Project> getSelected() {
    return selected;
}

public List<Project> getFiltered() {
    return filtered;
}

public void setSelected(List<Project> selected) {
    this.selected = selected;
}

public void setFiltered(List<Project> filtered) {
    this.filtered = filtered;
}

public Model getModel() {
    return model;
}

public void setModel(Model model) {
    this.model = model;
}

private void update(Project upd) {
    boolean updated = model.updateProject(upd);

    if (updated) {
        Logger.getLogger(this.getClass().getName()).log(Level.INFO,
                "Project [{0}] was updated by {1}: {2}",
                new Object[]{upd.getProjectCode(), User.getFullName(), upd.toString()});

        FacesContext.getCurrentInstance().addMessage(null,
                new FacesMessage(FacesMessage.SEVERITY_INFO,
                        "CUSTOMER [" + upd.getProjectCode() + "]", "Update successfull."));
    } else {
        Logger.getLogger(this.getClass().getName()).log(Level.SEVERE,
                "Project [{0}] could not be updated by {1}: {2}",
                new Object[]{upd.getProjectCode(), User.getFullName(), upd.toString()});

        FacesContext.getCurrentInstance().addMessage(null,
                new FacesMessage(FacesMessage.SEVERITY_ERROR,
                        "CUSTOMER [" + upd.getProjectCode() + "]", "Could not be updated."));
    }
}

public void onRowEdit(RowEditEvent event) {
    Project updProject = (Project) event.getObject();

    update(updProject);
}

public boolean getModify() {
    return modify;
}

public void setModify(boolean modify) {
    this.modify = modify;
}
}

我的实体：

@Entity
@Table(name = "S_PROJECT")
@XmlRootElement
@NamedQueries({
@NamedQuery(name = "Project.findAll", query = "SELECT p FROM Project p"),
@NamedQuery(name = "Project.findById", query = "SELECT p FROM Project p WHERE p.id = :id"),
@NamedQuery(name = "Project.findByProject", query = "SELECT p FROM Project p WHERE p.project = :project"),
@NamedQuery(name = "Project.findByType", query = "SELECT p FROM Project p WHERE p.type = :type"),
@NamedQuery(name = "Project.findByProjectCode", query = "SELECT p FROM Project p WHERE p.projectCode = :projectCode"),
@NamedQuery(name = "Project.findByGeo", query = "SELECT p FROM Project p WHERE p.geo = :geo"),
@NamedQuery(name = "Project.findBySelection", query = "SELECT p FROM Project p WHERE p.selection = :selection"),
@NamedQuery(name = "Project.findByLegalName", query = "SELECT p FROM Project p WHERE p.legalName = :legalName"),
@NamedQuery(name = "Project.findByContact", query = "SELECT p FROM Project p WHERE p.contact = :contact"),
@NamedQuery(name = "Project.findByPhone", query = "SELECT p FROM Project p WHERE p.phone = :phone"),
@NamedQuery(name = "Project.findByAddress", query = "SELECT p FROM Project p WHERE p.address = :address"),
@NamedQuery(name = "Project.findByDeliver", query = "SELECT p FROM Project p WHERE p.deliver = :deliver"),
@NamedQuery(name = "Project.findByEmail1", query = "SELECT p FROM Project p WHERE p.email1 = :email1"),
@NamedQuery(name = "Project.findByEmail2", query = "SELECT p FROM Project p WHERE p.email2 = :email2"),
@NamedQuery(name = "Project.updateCustomer", query = "UPDATE Project p SET p.project = :project, p.contact = :contact, p.phone = :phone, p.email1 = :email1, p.address = :address WHERE p.projectCode = :projectCode")})
public class Project implements Serializable {

private static final long serialVersionUID = 123456L;
@Basic(optional = false)
@Column(name = "ID")
private int id;
@Id
@Basic(optional = false)
@NotNull
@Size(min = 1, max = 255)
@Column(name = "Project")
private String project;
@Size(max = 255)
@Column(name = "Type")
private String type;
@Size(max = 255)
@Column(name = "ProjectCode")
private String projectCode;
@Column(name = "Geo")
private Boolean geo;
@Size(max = 255)
@Column(name = "Selection")
private String selection;
@Size(max = 255)
@Column(name = "LegalName")
private String legalName;
@Size(max = 255)
@Column(name = "Contact")
private String contact;
// @Pattern(regexp="^\\(?(\\d{3})\\)?[- ]?(\\d{3})[- ]?(\\d{4})$", message="Invalid phone/fax format, should be as xxx-xxx-xxxx")//if the field contains phone or fax number consider using this annotation to enforce field validation
@Size(max = 255)
@Column(name = "Phone")
private String phone;
@Size(max = 255)
@Column(name = "Address")
private String address;
@Size(max = 255)
@Column(name = "Deliver")
private String deliver;
@Size(max = 255)
@Column(name = "Email1")
private String email1;
@Size(max = 255)
@Column(name = "Email2")
private String email2;

public Project() {
}

public Project(String project) {
    this.project = project;
}

public Project(String project, int id) {
    this.project = project;
    this.id = id;
}
//Getters and Setters

@Override
public int hashCode() {
    int hash = 0;

    hash += (project != null ? project.hashCode() : 0);

    return hash;
}

@Override
public boolean equals(Object object) {
    if (!(object instanceof Project)) {
        return false;
    }

    Project other = (Project) object;

    if ((this.project == null && other.project != null) || (this.project != null && !this.project.equals(other.project))) {
        return false;
    }

    return true;
}

@Override
public String toString() {
    return "za.co.xon.intranet.customer.Project[id=" + id
            + "] projectcode=[" + projectCode + "] contact=[" + contact
            + "] phone=[" + phone + "] email1=[" + email1 + "] address=[" + address + "]";
}
}

Answer 1

我发现了这个问题并且它有点烦人但我的bean中的getList（）方法每次需要调用列表时都会重新创建列表，因为很快我将列表的创建移动到init（）方法更新工作正常。

Answer 2

尝试使用process="customerdatatable"标记中的<p:ajax>来强制更新值：

<p:ajax event="rowEdit" 
        listener="#{cView.onRowEdit}"
        process="customerdatatable"/>