Separating DataScroller & DataTable across Frameset
The JDev Code Generators for JSP places the DataScroller in the same virtual plane as the DataTable.
If the DataTable is large the User must scroll the page to see all the data, causing the DataScroller to scroll off page.
I would like to make a minimal change to the generated code to get the effect I want. I made a test harness below from the Order Entry Sample that is provided in the JDev Tutorials. I created a CustomersView1_Browase.html to create a Frameset for the Browse.JSP. I copied the CustomersView1_Browse.jsp to CustomersView1_BrowseB.jsp,
and edited both so that the DataScroller is in a non-scrolling Frame, and the DataTable is in a Scrolling Frame.
The code samples are shown below. They display OK, but the DataScroller does not affect the DataTable.
Is there a way to cause the DataScoller to affect the DataTable even though it is in a different Frame?
CustomersView1_Browse.html:
<HTML>
<HEAD>
<META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
<LINK REL=STYLESHEET TYPE="text/css" HREF="bc4j.css">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
</HEAD>
<FRAMESET ROWS="165,*" FRAMESPACING="0" FRAMEBORDER="0" border="false" >
<FRAME SRC="CustomersView1_Browse.jsp" NAME="browseHeadFrame" FRAMEBORDER="0" MARGINHEIGHT="1"
MARGINWIDTH="10" FRAMESPACING="0" SCROLLING="NO">
<FRAME SRC="CustomersView1_BrowseB.jsp" NAME="browseBodyFrame" FRAMEBORDER="0" MARGINHEIGHT="1"
MARGINWIDTH="10" FRAMESPACING="0" SCROLLING="YES">
</FRAMESET>
</HTML>
CustomersView1_Browse.jsp:
<%@ page language="java" errorPage="errorpage.jsp" contentType="text/html;charset=windows-1252" %>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<html>
<head>
<META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
<LINK REL=STYLESHEET TYPE="text/css" HREF="bc4j.css">
<TITLE>Browse Form</TITLE>
</head>
<body>
<jbo:ApplicationModule id="Frameset_testModule" definition="JSP.Frameset_testModule" releasemode="Stateful" />
<jbo:DataSource id="ds" appid="Frameset_testModule" viewobject="CustomersView1" rangesize="3" itermode="LastPagePartial"/>
<jbo:DataHandler appid="Frameset_testModule" />
<jbo:DataTransaction appid="Frameset_testModule" />
<h3>CustomersView Browse Form</h3>
<jbo:DataScroller datasource="ds" />
<jbo:ReleasePageResources />
</body>
</html>
CustomersView1_BrowseB.jsp:
<%@ page language="java" errorPage="errorpage.jsp" contentType="text/html;charset=windows-1252" %>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<html>
<head>
<META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
<LINK REL=STYLESHEET TYPE="text/css" HREF="bc4j.css">
</head>
<body>
<jbo:ApplicationModule id="Frameset_testModule" definition="JSP.Frameset_testModule" releasemode="Stateful" />
<jbo:DataSource id="ds" appid="Frameset_testModule" viewobject="CustomersView1" rangesize="3" itermode="LastPagePartial"/>
<jbo:DataHandler appid="Frameset_testModule" />
<jbo:DataTable datasource="ds" edittarget="CustomersView1_Edit.jsp"/>
<jbo:ReleasePageResources />
</body>
</html>
I was able to solve the problem by not using the DataScroller Tag. I instead made my own equivalent Navigation Buttons, and directed the navigation state to the proper frame of the frameset using the target parameter on the anchor <a> HTML primitive.
I did not wrap this in it's own DataTag, but that could be done.
CustomersView1_Browse.html
<HTML>
<HEAD>
<META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
<LINK REL=STYLESHEET TYPE="text/css" HREF="bc4j.css">
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
</HEAD>
<FRAMESET ROWS="150,*" FRAMESPACING="0" FRAMEBORDER="0" border="false" >
<FRAME SRC="CustomersView1_Browse.jsp" NAME="browseHeadFrame" FRAMEBORDER="0" MARGINHEIGHT="1"
MARGINWIDTH="10" FRAMESPACING="0" SCROLLING="NO">
<FRAME SRC="CustomersView1_BrowseB.jsp" NAME="browseBodyFrame" FRAMEBORDER="0" MARGINHEIGHT="1"
MARGINWIDTH="10" FRAMESPACING="0" SCROLLING="YES">
</FRAMESET>
</HTML>
CustomersView1_Browse.jsp
<%@ page language="java" errorPage="errorpage.jsp" contentType="text/html;charset=windows-1252" %>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<html>
<head>
<META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
<LINK REL=STYLESHEET TYPE="text/css" HREF="bc4j.css">
<TITLE>Browse Form</TITLE>
</head>
<body>
<jbo:ApplicationModule id="Frameset_testModule" definition="JSP.Frameset_testModule" releasemode="Stateful" />
<jbo:DataSource id="ds" appid="Frameset_testModule" viewobject="CustomersView1" rangesize="3" itermode="LastPagePartial"/>
<jbo:DataHandler appid="Frameset_testModule" />
<jbo:DataTransaction appid="Frameset_testModule" />
<h3>CustomersView Browse Form</h3>
<style type="text/css">
H6 {
color:red; background-color: #00C0C0;
font-family: monospace; font-weight: bold; font-size: 12pt;
border: thin; border-color: black
</style>
<!--jbo:DataScroller datasource="ds" /-->
<table><tr>
<td><h6>&lt;&lt;</h6></td>
<td><h6>&lt;&#151</h6></td>
<td><h6>;#151>&gt;</h6></td>
<td><h6>&gt;&gt;</h6></td>
</tr></table>
<!-- WOULD ALSO NEED TO PUT IN SOMETHING FOR A "GOTO" CAPABILITY -->
<jbo:ReleasePageResources />
</body>
</html>
CustomersView1_BrowseB.jsp
<%@ page language="java" errorPage="errorpage.jsp" contentType="text/html;charset=windows-1252" %>
<%@ taglib uri="/webapp/DataTags.tld" prefix="jbo" %>
<html>
<head>
<META NAME="GENERATOR" CONTENT="Oracle JDeveloper">
<LINK REL=STYLESHEET TYPE="text/css" HREF="bc4j.css">
</head>
<body>
<jbo:ApplicationModule id="Frameset_testModule" definition="JSP.Frameset_testModule" releasemode="Stateful" />
<jbo:DataSource id="ds" appid="Frameset_testModule" viewobject="CustomersView1" rangesize="3" itermode="LastPagePartial"/>
<jbo:DataHandler appid="Frameset_testModule" />
<%
String raw = request.getParameter("NAV"); String nav = raw; String navset = "FirstSet";
if (nav == null) nav = "First";
navset = nav + "Set";
%>
<!-- |<%=raw%>|-|<%=nav%>|-|<%=navset%>| <!-- DEBUG INFO DISPLAY -->
<jbo:RowsetNavigate datasource="ds" action="<%=navset%>" />
<jbo:DataTable datasource="ds" edittarget="CustomersView1_Edit.jsp"/>
<jbo:ReleasePageResources />
</body>
</html>
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d. if any invalid data is found appropriate error message must be thrown and that particular element should be given the focus
On seeing the requirement I felt its better to use Javascript to enable/disable controls and to validate data. Everything works fine if I have all the controls in a single page. But since I have server side pagenation enabled (using datascroller) Im able to access only the current page form elements from javascript. In shot Im able to access only the elements which are in the page from where I click on submit.But the user may change data in several pages and finally submit.
This leads me to a situation where validation can be done using JSF only. Im ok to do validations in JSF using a custom validator .But certain things like enabling or disabling controls on the form and the onLoad behavior can be coded using javascript only. This is because if I set the values such as disabled=true on the jsf inputText tag itself it is taking effect every time I move out and come back to the same page.
Im new to JSF . Can someone assist me in this. Its pretty URGENT .
Thanks,
SwamiHi,
Thanks for your quick response. I tried setting the disabled attribued based on you suggestion . But the enabling/disabling will not be immediate. I will have to go to some other page and come back to the first page to see the change in state.
For eg:
a. I defaulted the 'selected' attribute of bean to 'false' .So all rows loaded in disabled state as expected.
b. Now if i check the check box other dependant fields will not be enabled immediately . I will have to move do different page and come back to current page for seeing the controls in enabled status.
To overcome this problem i wrote some javascript function to set the selected rows elements' disabled property to false. I wrote something like the following for every element in the data row . After this the fields got enabled immediately on selecting check box
document.getElementById("<form name>:<data table name>:"+rowIndex+":<element name1>").disabled=false;
document.getElementById("<form name>:<data table name>:"+rowIndex+":<element nameN>").disabled=false;
But now there is one more problem
1. The page loads with all elements disabled.
2. I click on the select box and javascript enables the controls on the row (in page 1)
3. I change a value in a text box in the enabled row and move to page 2.
4. Come back to page 1 and see the new value of text box not being retained.
5. I change the value in the same text box again and move to page 2 .
6. Come back to page 1 and see the new value getting retained.
After some initial analysis i found that the the change in value of a form element (text box in this example) which is in disabled status will not be updated in the backing bean on page submit i.e the setter methods will not be called for these elements .Though i enabled it using javascript its actuallly still disabled accoring to the bean attributes.
So in step 3 of the above example the setter methods are not getting called since the field is disabled according to bean. On the contrary , in step 5 the setter methods are getting called when moving to page 2 since the state is enabled according to bean.
Problem 2
I have a column containg two elements out of which one can be present based on the value of another selectOneBox in the same row.In the below example based on value of 'type' ,either 'station' or 'period' should be displayed.
I have set display style as none in station assuming that zone should be displayed on page load.
style="display:none" This is causing problem when i navigate accross pages. When i go to a different page and come back then the zone is getting displayed irrespective of the value of type. This is because the page is rendered again with the default values.
<t:column>
<f:facet name="header">
<t:outputText value="type" />
</f:facet>
<h:selectOneMenu
id="type"
value="#{row.typeIndex}"
onchange="fnHideControls('#{rowIndex}'); return false;" disabled="#{!(row.selected)}">
<f:selectItems
value="#{bean.lstType}" />
</h:selectOneMenu>
</t:column>
<t:column>
<f:facet name="header">
<t:outputText value="Station/Period" />
</f:facet>
<h:selectOneMenu
id="Station"
value="#{row.stationIndex}"
style="display:none" disabled="#{!(row.selected)}">
<f:selectItems
value="#{bean.lstStation}" />
</h:selectOneMenu>
<h:selectOneMenu
id="period"
value="#{row.periodIndex}"
disabled="#{!(row.selected)}" >
<f:selectItems
value="#{bean.lstPeriod}" />
</h:selectOneMenu>
</t:column>Can you help me out with both these problems.
Thanks,
Swami. -
Hi
I have a dataScroller to display rows with a select component. The problem I am facing is the datascroller is not binding the selection. My backing bean has no binding for the select component as there could be hundreds of them. Could someone please suggest a way to resolve this?
Thanks
Murthy
Backing bean
package com.xxx.application.login.utils.helpers;
import java.util.*;
import javax.faces.context.FacesContext;
import com.xxx.application.login.utils.helpers.GroupPermissionsHelper;
public class GroupPermissionsBean {
int noOfPermissions=0;
public GroupPermissionsBean() {
System.out.println("In group permissions bean constructor");
public List getGroupsList() {
System.out.println("in group permissions bean get options");
List options=new ArrayList();
Map m= FacesContext.getCurrentInstance().getExternalContext().getSessionMap();
String pickOpts=(String)m.get("picklist");
System.out.println(" picklist=" + pickOpts);
if (pickOpts != null) {
String [] opts_arr = pickOpts.split(",");
for(int i=0; i < opts_arr.length; i++) {
opts_arr=opts_arr[i].trim();
if (opts_arr[i].equals("")) continue;
String pid="";
if (opts_arr[i].indexOf("(") > -1) {
pid=opts_arr[i].substring(0, opts_arr[i].indexOf("("));
GroupPermissionsHelper gph=new GroupPermissionsHelper(opts_arr[i], pid);
options.add(gph);
System.out.println("added option=" + opts_arr[i]);
noOfPermissions=options.size();
System.out.println("*********nof permissons=" + noOfPermissions);
return options;
public int getNoOfPermissions() {
return noOfPermissions;
public List getSomeList() {
List options=new ArrayList();
options.add("a");
options.add("b");
options.add("c");
noOfPermissions=options.size();
return options;
}//class
Data table component
<h:dataTable value="#{groupPermissionsBean.groupsList}" var="group" bgcolor="#D8EFE0" width="100%" id="permissionsTable"
headerClass="dataTableHeader" rowClasses="dataTableRowWhite, dataTableRowAdbeda"
columnClasses="captionColumn, valueColumn" rows="2" >
<h:column>
<f:facet name="header">
<h:outputText value="Groups"/>
</f:facet>
<h:outputText value="#{group.partID} " style="font-family: Ariel, Helvetica, sans-serif;font-size: 9pt;" />
</h:column>
<h:column>
<f:facet name="header">
<h:outputText value="Permissions"/>
</f:facet>
<h:selectOneMenu id="permselect" title="Select any one in this menu" >
<f:selectItem itemLabel="SELECT" itemValue="" />
<f:selectItem itemLabel="ADMIN" itemValue="ALL:#{group.fullID}" />
<f:selectItem itemLabel="VIEW" itemValue="VIEW:#{group.fullID}" />
<f:selectItem itemLabel="NONE" itemValue="NONE:#{group.fullID}" />
</h:selectOneMenu>
</h:column>
</h:dataTable>
Scroller code
<t:dataScroller id="dataScroller"
for="permissionsTable"
pageCountVar="pageCount"
pageIndexVar="pageIndex"
styleClass="tblHeaders"
paginator="true"
paginatorMaxPages="10"
paginatorTableClass="tblContent"
paginatorActiveColumnStyle="font-weight:bold;"
rendered = "#{groupPermissionsBean.noOfPermissions > 2}"
>
<f:facet name="previous">
<h:graphicImage url="#{bundle.PaginatorPrevImg}" rendered="#{pageIndex != 1}" style="border-color: transparent; border: 0;" />
</f:facet>
<f:facet name="next">
<h:graphicImage url="#{bundle.PaginatorNextImg}" rendered="#{pageIndex < pageCount}" style="border-color: transparent; border: 0;" />
</f:facet>
</t:dataScroller>To add some info: The dataTable component generates rows with some text and a select component. I have a submit button that
calls an action method.
What's happening now is...the rows appear alright. But each set of rows takes a round trip to the Jboss server. As a result,
when the submit button is clicked, only the rows in the view are submitted.
Without the scroller, I'd have all the rows in one page and the validation is done with Javascript.
With the scroller in place, the rows are displayed correctly, the selection of the selection component is done right, but
only the rows in the current page are validated.
I'd appreciate your help
Thanks
Murthy -
Using a4j to load a rich:dataTable after the page loads
I have a rich:dataTable that calls a session bean which executes an SQL query to generate the data to be displayed in the table. Something simple like:
<rich:dataTable rowClasses="evenRow,oddRow"
rows="30"
value="#{Bean.items}"
var="items">
where Bean.getItems() performs an SQL query and returns List<Item>.
The problem is that the query takes a long time to execute (~45 seconds) and I'd like the page to initially load while the query is being executed, displaying a spinner while it loads. Once the query is done, I'd like to update the initially empty table using ajax.
I set up a spinner using a4j:status and it works fine after the page initially loads (using a rich:datascroller).
However, the page will not initially load until the query completes, which is a problem because the query is so slow. What happens is the user clicks on the "List Items" tab from my site's homepage, sits there on the same page for 45 seconds with absolutely no visual indication that anything is happening, and then finally is taken to the list of items page.
What is needed to make the dataTable load via AJAX the first time, as well as all subsequent times?
Thanks!
Edited by: rcrowell on Sep 8, 2008 5:42 PMrcrowell wrote:
The issue isn't the PK of the table; the query is joining across many tables and aggregating data from one table in particular with millions of rows. The table has paging, but again that won't help the timinig issues due to the aggregation that must be performed on a large table.
Surely there must be a way to get the dataTable to always load its data via ajax, and not only after the first time.Well JSF does not have AJAX built-in, so why would there be? Perhaps one of the AJAX-based frameworks has this. I imagine it wouldn't be hard to do with the existing AJAX frameworks even without a built-in component specifically for it. Trigger an AJAX action on load which rerenders a panel which will only contain the dataTable upon the rerendering.
>
I think I could do it by adding a 'dataTableRendered' variable to the bean and using a jsFunction to set this variable to True when the page loads, but I'm looking for a better way. (I'm also not 100% sure this would do what I want.) -
APO gATP vs R/3 ATP - To check sales order ATP across multiple plants
Hi There,
I am trying to evaluate gATP functionality for SD sales orders.
The primary requirement is to have sales order ATP checking take place across multiple plants.
E.G.
Sales order line is entered for qty 100
60 is available in plant A, 40 is available in plant B
System checks both plants and creates 2 lines - one for delivery from plant A and one for delivery from plant B
(we are currently heading down the road of writing ABAP to do this 'multi-plant' check in R/3 but the more complex the requirements get the more interested I am in understanding more about APO/gATP)
I would like to understand the benefit of implementing APO / gATP as opposed to using standard R/3 ATP and perhaps writing custom ABAP code to search for inventory across multiple plants.
I would appreciate any insight regarding what is required to setp gATP to perform such checking and any other feedback regarding this issue - especially if you have had to implement something similar at your company.
I have looked here but not much clear help:
http://help.sap.com/saphelp_scm50/helpdata/en/26/c2d63b18bc7e7fe10000000a114084/frameset.htm
Thanks,
NiallHi Niall
you are probably looking at RBATP (Rule based ATP). Look at transaction /sapapo/rba04 in APO where you develop your own location and product substitution rules. Going down an ABAP road in R/3 may work short-term but not long-term as the requirements may get more complex.
Regards
Srinivas -
I am working on a wireless vital sign monitor. I have 3 signals; heart rate and temperature. I filter and amplify the signals before converting them into digital form. I then pass them via MAX232 before passing them to RS232 serial cable.
I am therefore working on a program to receive the combined signal and separate them.
I have come across serial read and write examples on ni.com but am looking for one where I can actually separate combined signals and display them separately.Reading the serial port will give you a string. How you divide the channels depends on how the data was formatted before it was sent over the serial channel.
If you are designing the instrument, as it seems from your query, then you can set up any form you wish. If your data is always floating point numeric, you could use space or tab characters to separate data words. You could use and XML format. If the instrument is provided by a vendor, contact them for the protocol.
If tabs are used between words and returns between sets of readings, the resutlant string can be interpretted by the Spreadsheet String to Array function in LV.
Things to avoid are characters often used by serial communications systems as control characters. Carraige returns are
often used as command terminators by serial protocols, but may also be used by the port.
Lynn
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