Technique to keep clustered environment in-memory chance in sync
http://www.oracle.com/technology/pub/articles/masterj2ee/j2ee_wk6.html
This picture was taken at Medowlake Botanical Garden. www.nvrpa.org/parks/meadowlark/index.php. It is really very scenic and nice place to take snaps.
It is hard to find good documentation on Oracle AS. If you search on oracle site then you get thousand links in your search result and then it is your job to find which document is useful ( If you are OracleAS user then you know what I am talking ;) )
Mike Lehmann blog is very useful for Oracle AS users http://mike-lehmann.blogspot.com
AQ Detail
http://mike-lehmann.blogspot.com/2006/09/simple-mdb-with-oracle-database-jms.html
This is breaking news for me :) I have discussed with few of you that I have doubt about scaling Ruby on Rail Apps
Twitter is thinking to move to Java or PHP due to scaling issues.
http://www.techcrunch.com/2008/05/01/twitter-said-to-be-abandoning-ruby-on-rails/
Only time will tell whether Twitter is having problem due to the way Ruby works or whether their code has design problem.
Well still there are many Ruby fans who are moving from Java to Ruby.
To me - If you like to learn new things then learn Ruby. Ruby is fun but don't use it for any enterprise level apps. Java is proven technology so, I think it is better to stay away from Ruby for sometime and let someone else take a risk :)
Hacker Arguments
Many version control systems are available in market. I have used quite a few during my IT carrier. Version control is very important part of every project and it makes sense that people are coming up with new version control systems to fix existing issues.
Today I came across blog which is giving some detail about GIT. First time I heard but it seems like it is not that new and it seems better than SVN. Which version control system are you using?
GIT vs SVN
http://www.russellbeattie.com/blog/distributed-revision-control-systems-git-vs-mercurial-vs-svn
GIT
http://www.kernel.org/pub/software/scm/git/docs/user-manual.html
Read, every day, something no one else is reading. Think, every day, something no one else is thinking. Do, every day, something no one else would be silly enough to do. It is bad for the mind to be always part of unanimity.
- Christopher Morley
To implement dynamic autocomplete with additional parameter
1. Include
<%= javascript_include_tag :defaults%>
<script src="/include/prototype.js" type="text/javascript"></script>
<script src="/include/scriptaculous.js" type="text/javascript"></script>
prototype.js & scriptaculous.js are available on http://wiki.script.aculo.us/
2.
<input type="text" id="autocomplete" name="attribute_lookup"/>
<div class="autocomplete" id="attribute_lookup_auto_complete"></div>
<%= javascript_tag("new Ajax.Autocompleter('autocomplete', 'attribute_lookup_auto_complete','/server/url', { fullSearch: true, frequency: 0, minChars: 1, callback: eventDateCallback});")%>
3.
Write javascript to handle callback
<SCRIPT language=javascript>
function eventDateCallback(element, entry) {
return entry + "&additionalParam=" + document.myForm.additionalparam.value;
}
</SCRIPT>
4.
Add autocomplete CSS
div.autocomplete {
position:absolute;
width:250px;
background-color:white;
border:1px solid #888;
margin:0px;
padding:0px;
}
div.autocomplete ul {
list-style-type:none;
margin:0px;
padding:0px;
}
div.autocomplete ul li.selected { background-color: #ffb;}
div.autocomplete ul li {
list-style-type:none;
display:block;
margin:0;
padding:2px;
height:32px;
cursor:pointer;
}
5.
Add method in controller which returns array of string
6.
Implement view for returned items. Return list should looks like e.g.
<ul>
<li>Item1</li>
<li>Item2</li>
</ul>
Pre-req: Create Workspace and a project inside that workspace with index.html
1. Write an implementation class with method which takes AttachmentPart as an input
public String processAttachment(int id,
AttachmentPart attachment) throws RemoteException {
try {
Object attachmentObj = attachment.getContent();
//Add code to process input attachment
} catch (Exception se) {
//Exception handling
}
return "Test";
}
2. Go to File->New->Business Tier->Web Services and select Java Web Services (J2EE 1.4 or 1.3 version) and click OK
3. Go to Next
4. Give "Web Service Name" e.g MyTestWebService
5. Select your implementation class
6. Click Next
7. Click Next
8. Click Next
9. Click Next
10. Select your method e.g processAttachment to expose as webservice.
11. Finish ( This will generate WSDL and all related classes )
12. Now go to your WebService in "System Navigator"
13. Right Click on WebService (MyTestWebService) and click on Generate WebService Proxy
14. Select "Run against a service deployed to an external server" radio button and click OK.
15. Run your project
16. Go to ....SoapHttpPortClient.java and add following method
public AttachmentPart getAttachmentPart() throws RemoteException {
AttachmentPart impl = null;
try {
MessageFactory factory = MessageFactory.newInstance();
SOAPMessage message = factory.createMessage();
//change file://c:\\a.txt to a file you want to attach
impl =
message.createAttachmentPart(new DataHandler(new URL("file:\\C:\\a.txt")));
// add attachment to message
message.addAttachmentPart(impl);
} catch (SOAPException ex) {
return null;
} catch (Exception ex) {
return null;
}
return impl;
}
and call that method from main(). It will look like
public static void main(String[] args) {
try {
MyTestWebServiceSoapHttpPortClient myPort =
new MyTestWebServiceSoapHttpPortClient();
myPort.processAttachment(0, myPort.getAttachmentPart());
// Add your own code here
} catch (Exception ex) {
ex.printStackTrace();
}
}
17. Run Your Client to test your webservice
Note: JDeveloper is generating .wsdl and ..Stub.java with port 8888. If your embedded oc4j is running on different port then you will have to modify .wsdl and ..Stub.java
Give a try. Good Luck!
We All desi likes to read news very regularly. But sites like timesofindia.com and rediff.com are just a junk. Best way to deal with those popups is to install firefox
1. Go to http://www.mozilla.com/en-US/firefox/ and download
2. Download Adblock Plus https://addons.mozilla.org/en-US/firefox/addon/1865
3. Subscribe to any one adblock plus default list..
Hope that helps :)
