?
Solved

Checking for duplicate jms Textmessages in a folder

Posted on 2013-11-06
3
Medium Priority
?
136 Views
Last Modified: 2013-11-07
Hi guys
I have a scenario where I have a folder c:\messages.
I am listening a queue for text messages (jms.Textmessage)
I have two requirments
To save the Textmessage in the messages folder. The Textmessage file name should be the messageid.( messageid is unique for each Textmessage).

If the Textmessage file already exists in the messages folder then it should not be saved.

Any idea how I can go about doing this? Any help with code is greatly appreciated.
Thanks.
0
Comment
Question by:royjayd
  • 2
3 Comments
 
LVL 36

Expert Comment

by:mccarl
ID: 39629315
Have you already got some code that we can start from?
0
 

Author Comment

by:royjayd
ID: 39629344
Yeah,


// my listener which is listening for Textmessages on the Queue.
Public class Mylistener{

Public void onMessage(Jaxax.jms.Message message){
if (message instanceOf Jaxax.jms.TextMessage){
String messageId = message.getJmsMessageId();

// here I want to check if a Textmessage file with filename as messageId already exists in the
// C:\messages folder. If it doesn't exist then add the Textmessage to the messages folder.
}
}
}

Thx.
0
 
LVL 36

Accepted Solution

by:
mccarl earned 2000 total points
ID: 39629375
Ok, so the code that you would need to insert is simply something like this...
String filename = "C:\\messages\\" + messageId;             // Customize this further if you want all the files to have a file extension, etc  (eg. you could add        + ".txt"      to the end of that to make them all text files)
File file = new File(fileName);
if (!file.exists()) {
    FileOutputStream os = new FileOutputStream(file);
    os.write(((TextMessage) message).getText().getBytes());
    os.close();
}

Open in new window

0

Featured Post

Never miss a deadline with monday.com

The revolutionary project management tool is here!   Plan visually with a single glance and make sure your projects get done.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java contains several comparison operators (e.g., <, <=, >, >=, ==, !=) that allow you to compare primitive values. However, these operators cannot be used to compare the contents of objects. Interface Comparable is used to allow objects of a cl…
In this post we will learn different types of Android Layout and some basics of an Android App.
Viewers will learn about the different types of variables in Java and how to declare them. Decide the type of variable desired: Put the keyword corresponding to the type of variable in front of the variable name: Use the equal sign to assign a v…
How to fix incompatible JVM issue while installing Eclipse While installing Eclipse in windows, got one error like above and unable to proceed with the installation. This video describes how to successfully install Eclipse. How to solve incompa…
Suggested Courses
Course of the Month3 days, 5 hours left to enroll

598 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question