ADF : ADF Table not displaying rows 1st time.
If we are using <af:quickQuery component against VO (ADF table), always we should mark "Query Automatically" checked, other wise rows will not be displayed 1st time when we land to the page.
Wednesday, 28 June 2017
ADF : ADF Table not displaying rows 1st time.
If we are using <af:quickQuery component against VO (ADF table), always we should mark "Query Automatically" checked, other wise rows will not be displayed 1st time when we land to the page.
Thursday, 1 June 2017
ADF : Page loads - Call refreshRegion() when JSFF page loads
ADF : Page loads - Call refreshRegion() when JSFF page loads
Sunday, 23 April 2017
JavaScript: Read WebCam and take snap shot
JavaScript: Read WebCam and take snap shot
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<video id="video"></video>
<canvas id="canvas"></canvas><br>
<button onclick="snap();">Snap</button>
<script type="text/javascript">
alert("coming11");
var video = document.getElementById('video');
var canvas = document.getElementById('canvas');
var context = canvas.getContext('2d');
alert("coming22");
navigator.getUserMedia = navigator.getUserMedia ||
navigator.webkidGetUserMedia ||
navigator.monzGetUserMedia ||
navigator.oGetUserMedia ||
navigator.msGetUserMedia;
alert("coming3");
if(navigator.getUserMedia){
navigator.getUserMedia({video:true}, streamWebCam, throwError);
}
function streamWebCam (stream) {
video.src = wendow.URL.createObjectURL(stream);
video.play();
}
function throwError (e){
alert(e.name);
}
function snap(){
canvas.width=video.clientWidth;
canvas.height=video.height;
canvas.drawImage(video,0,0);
}
</script>
</body>
</html>
https://www.youtube.com/watch?v=K_NP_a78Jpk
Webcam integrating with java code - http://webcam-capture.sarxos.pl/
Friday, 31 March 2017
ADF : REST and WebService
ADF : REST and WebService
RESTService
https://www.youtube.com/watch?v=aEWqOMQ2a_c
Consuming REST application
https://www.youtube.com/watch?v=1ujo8c-2UTo
#########################################################################################
WebService
https://www.youtube.com/watch?v=Cos1qSn4EvU
Consuming WebService application
https://www.youtube.com/watch?v=yDms-WIYoUw
Thursday, 23 March 2017
ADF : BC : Errors faced.
ADF : BC : Errors faced.
1. Missing bind parameter 1
ObjectDetailsEO.IMPORT_OBJECT_ID = :Bind_ImportObjectId
2. ADF : BC : Fetch more than 500 Rows
3. JBO-25083: Cannot create a secondary iterator on row set ImportObjectsVO_ImportObjectDetails_ImportObjectsVOToImportObjectDetailsVo_ImportObjectDetailsVO_1 because the access mode is forward-only or range-paging
4. ViewObject -> Entity Usage -> Inner Join / Left outer join
Monday, 20 March 2017
Wednesday, 25 January 2017
Thursday, 19 January 2017
ADF : Serializable
ADF : Serializable
All the managed beans should be serializable because the container may occassionally serialize and passivate the beans or send it over the network. This occurs in situations
such as heavy load (our case) or when clustering is enabled.
Another tip:
- The managed beans with pageFlow or session scope are required to be serialized while backingBean or request scope are not required to be serialized.
- The ADF/JSF Rich UI components are not serializable and hence they should not be present in pageFlow scope managed beans.
Response: Your pageFlowScope bean should implements Serializable.
such as heavy load (our case) or when clustering is enabled.
Another tip:
- The managed beans with pageFlow or session scope are required to be serialized while backingBean or request scope are not required to be serialized.
- The ADF/JSF Rich UI components are not serializable and hence they should not be present in pageFlow scope managed beans.
Response: Your pageFlowScope bean should implements Serializable.
Eg:
Possibility 1:
Possibility 2:
Possibility 3:
Possibility 4:
Report
By setting this in java option we will get to know the issues in diagnostic or em logs.
-Dorg.apache.myfaces.trinidad.CHECK_STATE_SERIALIZATION=all
check : http://hasamali.blogspot.in/2011/09/adf-jsf-adfc-scope-object-serialization.html
About - serialVersionUID
The serialVersionUID is used as a version control in a Serializable class. If you do not explicitly declare a serialVersionUID, JVM will do it for you automatically, based on various aspects of your Serializable class
Check - https://www.mkyong.com/java-best-practices/understand-the-serialversionuid/
How Server does Serialization and Deserialization
A simple way to write / serialize the UserBean object into a file – “c:\\UserBean.ser”.
FileOutputStream fout = new FileOutputStream("c:\\UserBean.ser");
ObjectOutputStream oos = new ObjectOutputStream(fout);
oos.writeObject(UserBean Obj);
A simple way to read / deserialize the UserBean object from file – “c:\\UserBean.ser”.
FileInputStream fin = new FileInputStream("c:\\UserBean.ser");
ObjectInputStream ois = new ObjectInputStream(fin);
UserBean = (UserBean) ois.readObject();
Thursday, 12 January 2017
Wednesday, 4 January 2017
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