Dear All,
I have a form which is master-detail type containing customer information as
master and also warehouse information as detail. For one customer it may
contain more than one warehouse.
The Customer model class is as follows:
package model;
:
:
public class Customer {
Integer id;
String name;
String address;
String phone;
String fax;
:
:
Set<model.Warehouse> warehouses;
:
:
When this form is loaded, it run action.Customer class which loads customer
property inside.
package action;
import java.text.SimpleDateFormat;
import java.util.*;
import javax.servlet.ServletContext;
import net.sf.jasperreports.engine.JasperCompileManager;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.Preparable;
@SuppressWarnings("serial")
public class Customer extends ActionSupport implements Preparable{
boolean ok;
boolean cancel;
boolean save;
boolean copy;
boolean print;
service.Customer serviceCustomer;
service.Warehouse serviceWarehouse;
model.Customer customer;
action.Warehouses actionWarehouses;
:
:
public String execute() throws Exception
{
:
:
if(customer==null)
{
customer=(model.Customer)ActionContext.getContext().getSession().get("customer");
customer=serviceCustomer.get(customer.getId());
}
else
{
ActionContext.getContext().getSession().put("customer",customer);
}
:
:
I also have Customer-validation.xml for this action:
<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator
1.0.2//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd";>
<validators>
<field name="customer.name">
<field-validator type="requiredstring">
true
<message key="name.required" />
</field-validator>
<field-validator type="stringlength">
4
50
true
<message key="name.length" />
</field-validator>
</field>
:
:
When the form is submitted but validation fails, it is directed to the page
with result="input" in struts.xml which maps to my JSP form again. However,
warehouse information is lost.
I know why the information is lost as it is not inside form fields.
So I want to ask this master-detail situation which I think is a quite
general case, normally how should we handle it with presence of validation
xml?
Or I should do the validation in action class without using struts
validation xml?
I prefer to use the first method as it is more robust, but if it is
impossible I would adopt to use the second one.
Please advise! Thanks!
Terry.
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