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

How to: Adding Speech to Oracle Digital Assistant; Talk to me Goose

At Oracle Code One in October, and also on DOAG in Nurnberg Germany in November I presented on how to go beyond your regular chatbot. This presentation contained a part on exposing your Oracle Digital Assistant over Alexa and also a part on face recognition. I finally found the time to blog about it. In this blogpost I will share details of the Alexa implementation in this solution.
Typically there are 3 area's of interest which I will explain. Webhook Code to enable communication between Alexa and Oracle Digital AssistantAlexaDigital Assistant (DA) Explaining the Webhook Code The overall setup contains of Alexa, a NodeJS webhook and an Oracle Digital Assistant.
The webhook code will be responsible for receiving and transforming the JSON payload from the Alexa request. The transformed will be sent to a webhook configured on Oracle DA. The DA will send its response back to the webhook, which will transform into a format that can be used by an Alexa device. To code exposes two REST …

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…

How to use node-red to interact with twitter

Recently I had to setup an application that was able to read twitter and, based on some predefined keywords,  had to reply to specific tweets. I decided to have a look at node-red to set this stuff up. It proofed to be rather straightforward and easy to implement. The hardest part was to get approval for a twitter developer account. In this post I describe how I used node-red and how I implemented the interaction with twitter.
What is node-red, and how to use it? Node-RED  (https://nodered.org/) is a programming tool for wiring together hardware devices, APIs and online services in new and interesting ways. It provides a browser-based editor that makes it easy to wire together flows using the wide range of nodes in the palette that can be deployed to its runtime in a single-click.  You can use node-RED in many ways, but for the purpose of this demo I decided to run it in a docker image. I used the way described here (https://hub.docker.com/r/nodered/node-red-docker/), as this is a no…