Databases
StackOverflow2013
Postsdbo
POSpring Web Flow: How do I pass values from one flow to another flow
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POSpring Web Flow: How do I pass values from one flow to another flow
    primarykey
    data
    text
    <p>I have a Java web application using spring web flow. </p> <p>How do I pass values from one flow to another flow?</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;flow xmlns="http://www.springframework.org/schema/webflow" xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/webflow http://www.springframework.org/schema/webflow/spring-webflow-2.0.xsd"&gt; &lt;persistence-context /&gt; &lt;var name="editBean" class="jp.co.anicom.domain.User" /&gt; &lt;var name="deleteBean" class="jp.co.anicom.domain.User" /&gt; &lt;var name="authorityBean" class="jp.co.anicom.domain.Authority" /&gt; &lt;on-start&gt; &lt;set name="flowScope.username" value="requestParameters.username" /&gt; &lt;/on-start&gt; &lt;action-state id="queryAll"&gt; &lt;evaluate expression="employeeAction.GetAuthority(flowScope.username)" result="authorityBean" /&gt; &lt;transition to="editForm" /&gt; &lt;/action-state&gt; &lt;view-state id="editForm" model="editBean" view="../xhtml/framework/edit"&gt; &lt;transition on="editButton" to="validateAccount" /&gt; &lt;transition on="delete" to="getId" /&gt; &lt;transition on="back" to="editSuccessful" /&gt; &lt;/view-state&gt; &lt;action-state id="validateAccount"&gt; &lt;evaluate expression="employeeAction.GetEmployee(flowScope.username, oldPassword)" result="editBean" /&gt; &lt;transition to="checkUserAccount" /&gt; &lt;/action-state&gt; &lt;action-state id="getId"&gt; &lt;evaluate expression="employeeAction.GetEmployee(flowScope.username)" result="deleteBean" /&gt; &lt;transition to="deleteUser" /&gt; &lt;/action-state&gt; &lt;decision-state id="checkUserAccount"&gt; &lt;if test="editBean == null" then="queryAll" else="confirmPassword" /&gt; &lt;/decision-state&gt; &lt;decision-state id="confirmPassword"&gt; &lt;if test="newPassword.equals(confirmPassword)" then="editUser1" else="queryAll" /&gt; &lt;/decision-state&gt; &lt;action-state id="editUser1"&gt; &lt;set name="editBean.password" value="newPassword" /&gt; &lt;transition to="editUser2" /&gt; &lt;/action-state&gt; &lt;action-state id="editUser2"&gt; &lt;evaluate expression="employeeAction.editEmployee(editBean, authorityBean.authority)" /&gt; &lt;transition to="editSuccessful" /&gt; &lt;/action-state&gt; &lt;action-state id="deleteUser"&gt; &lt;evaluate expression="employeeAction.deleteEmployee(deleteBean)" /&gt; &lt;transition to="editSuccessful" /&gt; &lt;/action-state&gt; &lt;end-state id="editSuccessful" view="externalRedirect:contextRelative:/admin_main.do" commit="true" /&gt; &lt;end-state id="displayError" view="../xhtml/framework/displayError" /&gt; &lt;end-state id="dummy1" view="../xhtml/framework/dummy" /&gt; &lt;global-transitions&gt; &lt;transition on-exception="java.lang.Exception" to="displayError" /&gt; &lt;/global-transitions&gt; &lt;/flow&gt; </code></pre> <p>I am having a problem with the edit functionality here. In my edit page I have username, oldpassword, newpassword and confirm password fields. </p> <p>First in validateAccount state I check if the username and oldpassword exists in the database, if it it doesn't exist I forward it to queryall state. </p> <p>If it exists I check if the new password and confirmpassword values are the same, if they are the same I proceed with the editing. </p> <p>If not I return again to queryAll. </p> <p>QueryAll state gets the authority of the user to populate it in the form upon re-displaying the page. When I leave the password fields blank and the first time I click edit button It throws a java.lang.NullPointerException. </p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USreevesy
    1. UScedric
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POSpring Web Flow: How do I pass values from one flow to another flow
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload