Skip to main content

ADF 11g Quicky : Select text from a resourcebundle

One of the questions I got lately is how to select a specific text from a resource bundle and use it in an ADF Application. This is easy and can be done as shown below.

All you need is a resourcebundle containing the keys and text values, a selectcomponent to set the actual key and some java code in a valueChangeListener to search the resourcebundle for the key. So first create the resourceBundle file to hold the key/value pairs for the text resources.

Next implement the page holding the selectcomponent, and an output component to show the value retrieved from the resourcebundle.
1:  <af:panelGroupLayout id="pgl1">  
2: <af:selectOneChoice valueChangeListener="#{pageFlowScope.resourceBundleManager.listEntryChanged}"
3: id="soc1" autoSubmit="true" valuePassThru="true"
4: label="#{viewcontrollerBundle.SEL_RESOURCE_KEY}">
5: <af:selectItem label="Value 1" value="WAARDE_EEN" id="si1"/>
6: <af:selectItem label="Value 2" value="WAARDE_TWEE" id="si3"/>
7: <af:selectItem label="Value 3" value="WAARDE_DRIE" id="si2"/>
8: <af:selectItem label="Value 4" value="WAARDE_VIER" id="si4"/>
9: </af:selectOneChoice>
10: <af:spacer width="10" height="20" id="s1"/>
11: <af:outputText value="#{pageFlowScope.resourceBundleManager.textValue}"
12: partialTriggers="soc1"
13: id="ot1"/>
14: </af:panelGroupLayout>

Finally implement the valueChangeListener in which we get the choosen value from the resource bundle.
1:  package com.blogspot.lucbors.view.beans;  
2: import java.util.ResourceBundle;
3: import javax.faces.context.FacesContext;
4: import javax.faces.event.ValueChangeEvent;
5: public class ResourceBundleManager {
6: public ResourceBundleManager() {
7: FacesContext messageContext = FacesContext.getCurrentInstance();
8: messageBundle =
9: ResourceBundle.getBundle("nl.amis.technology.view.ViewControllerBundle",
10: messageContext.getViewRoot().getLocale());
11: }
12: public void listEntryChanged(ValueChangeEvent valueChangeEvent) {
13: // Add event code here...
14: String newValue = (String)valueChangeEvent.getNewValue();
15: System.out.println(newValue);
16: setTextValue(messageBundle.getString(newValue));
17: }
18: public void setMessageBundle(ResourceBundle messageBundle) {
19: this.messageBundle = messageBundle;
20: }
21: public ResourceBundle getMessageBundle() {
22: return messageBundle;
23: }
24: public void setTextValue(String textValue) {
25: this.textValue = textValue;
26: }
27: public String getTextValue() {
28: return textValue;
29: }
30: private String textValue;
31: private ResourceBundle messageBundle;
32: }

And now with changing the selection in the listbox, the value of the text shown in the output text (in the green box) component is read from the resourcebundle and refreshed.

And that's all.

Comments

Popular posts from this blog

ADF 12.1.3 : Implementing Default Table Filter Values

In one of my projects I ran into a requirement where the end user needs to be presented with default values in the table filters. This sounds like it is a common requirement, which is easy to implement. However it proved to be not so common, as it is not in the documentation nor are there any Blogpost to be found that talk about this feature. In this blogpost I describe how to implement this.

The Use Case Explained
Users of the application would typically enter today's date in a table filter in order to get all data that is valid for today. They do this each and every time. In order to facilitate them I want to have the table filter pre-filled with today's date (at the moment of writing July 31st 2015).


So whenever the page is displayed, it should display 'today' in the table filter and execute the query accordingly. The problem is to get the value in the filter without the user typing it. Lets first take a look at how the ADF Search and Filters are implemented by the f…

ADF 12.2.x : Conditional Showing Message Instead of List of Values Popup

Today I had to fix an issue in one of our ADF applications. For those of you working with ADF (as I do too occasionally) this might be valuable, so I decided to share this. The application is based on an old Oracle Forms applications and I had to implement the following functionality:

FRM-41830 : List of Values contains no entries.

In other words (more ADF like) : If you are about to render a List of Values and that List of Values contains no rows, just show a message instead of showing the List of Values.

In this post I will describe how I was able to implement this although it turned out to be a challenge.
Below are the steps that I took. Note that the Application can be downloaded from GIT.

1) I use a UI pattern where we use readonly table and do edits in a popup. That means that any List of Values will add an additional popup to the UI.



2) The List of Values that I use in this sample only shows entries where the minimum salary is less then the employees current salary. Not that …

ADF 11g Quicky 3 : Adding Error, Info and Warning messages

How can we add a message programatically ? Last week I got this question for the second time in a months time. I decided to write a short blogpost on how this works.

Adding messages is very easy, you just need to know how it works.
You can add a message to your faces context by creating a new FacesMessage. Set the severity (ERROR, WARNING, INFO or FATAL ), set the message text, and if nessecary a message detail. The fragment below shows the code for an ERROR message.

1: public void setMessagesErr(ActionEvent actionEvent) {
2: String msg = "This is a message";
3: AdfFacesContext adfFacesContext = null;
4: adfFacesContext = AdfFacesContext.getCurrentInstance();
5: FacesContext ctx = FacesContext.getCurrentInstance();
6: FacesMessage fm =
7: new FacesMessage(FacesMessage.SEVERITY_ERROR, msg, "");
8: ctx.addMessage(null, fm);
9: }


I created a simple page with a couple of buttons to show the result of setting the message. When the butto…