seam 学习 3、 表格选择行

seam 学习 3、 表格选择行

在seam 实现表格选择行非常的容易。只需要使用@dataModel 和 @DataModelSelection
看下面代码：
driverBean.java

package  cn.xiangyunsoft.transport3.action;

import  java.io.Serializable;
import  java.util.List;

import  javax.persistence.EntityManager;
import  javax.persistence.PersistenceContext;
import  javax.persistence.PersistenceContextType;

import  org.jboss.seam.ScopeType;
import  org.jboss.seam.annotations.Factory;
import  org.jboss.seam.annotations.In;
import  org.jboss.seam.annotations.Name;
import  org.jboss.seam.annotations.Out;
import  org.jboss.seam.annotations.Scope;
import  org.jboss.seam.annotations.datamodel.DataModel;
import  org.jboss.seam.annotations.datamodel.DataModelSelection;

import  cn.xiangyunsoft.transport3.entity.Driver;

@Name( " driverBean " )
@Scope(ScopeType.SESSION)
public   class  DriverBean  implements  Serializable {

    @DataModel
     private  List < Driver >  drivers;

    @DataModelSelection
    @Out(required  =   false )
     private  Driver driver;

    @In
     private  EntityManager entityManager;

    @Factory( " drivers " )
     public   void  findMessages() {
        drivers  =  entityManager
                .createQuery( " select driver from Driver driver  " )
                .getResultList();
    }

     public   void  select() {
        System.out.println( " select driver = "   +  driver);
        driver.setStoped( true );
    }
}

driverList.xhtml

<! DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< ui:composition  xmlns ="http://www.w3.org/1999/xhtml"
    xmlns:s ="http://jboss.com/products/seam/taglib"
    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:rich ="http://richfaces.org/rich"
    template ="/layout/template.xhtml" >

     < ui:define  name ="body" >
         < rich:panel >
             < f:facet  name ="header" > driverList </ f:facet >
             < div  class ="results" >< h:outputText  value ="No driver exists"
                rendered ="#{empty drivers}"   />   < h:dataTable  id ="driverList"
                var ="driver"  value ="#{drivers}"  rendered ="#{not empty drivers}" >
                 < h:column >
                     < f:facet  name ="header" > Id </ f:facet >
                    #{driver.id}
                     < h:selectBooleanCheckbox  value ="#{driver.stoped}"
                        disabled ="true"   />
                 </ h:column >
                 < h:column >
                     < f:facet  name ="header" > select </ f:facet >
                     < s:link  value ="#{driver.name}"  action ="#{driverBean.select}" />
                 </ h:column >
             </ h:dataTable ></ div >
         </ rich:panel >
     </ ui:define >
</ ui:composition >

这样配合就可以实现在单行选中了。