Gullele's Corner

dumping mysql database ignoring some tables

gullele — Fri, 27 Jan 2012 21:20:31 +0000

Mysql comes with a handy tool for dumping database, like from remote server to local machine or vice versa.
Sometimes you might want to dump some tables but not the other here you go!

mysqldump -h[HOST] -u[USERNAME] --port=[PORT] -p --ignore [ignoretablename] databasename > databasename.sql

The database.sql would contain all the schema + data.
Then import it as

mysql -h[host] -u[username] -p databasename < databasename.sql

You can provide -p[password] or if you leave it as -p you would be prompted for password later which is a cool way to proceed.
ENJomYsql!

Mass/Multiple file upload in Java ServerFaces JSF

gullele — Mon, 02 Jan 2012 01:46:24 +0000

Without knowing if it is the best approach or not, I will post how I solved the multiple file upload problem in JSF as follows.
Here is the xhtml file that would take the files









OH YEA, PUT your face HERE

As you can see, the file would be dealing with a single backing bean property uploadedFile. You would tomahawk for the file upload one. There is also file upload in richfaces as well.

Now, let’s see what is the hood of MyBean.java. In the bean you would have to member variables for this purpose:

private List uploadedFiles;
private UploadedFile uploadedFile;

You can get the uploaded file from org.apache.myfaces.custom.fileupload.UploadedFile.
Then have a normal getter and setter for both.
The trick is in the setter of the uploadedFile:

public void setUploadedFile(UploadedFile uploadedFile){
this.uploadedFiles.add(uploadedFile);
}

When the file is requested, add it to the list of the uploadedFiles.
For the action which would would do the actual uploading of the file, I have used the snippet from http://balusc.blogspot.com/2008/02/uploading-files-with-jsf.html.

public String uploadFiles(){
for(UploadedFile uploadedFile : this.uploadedFiles){
if (uploadedFile !=null ){

// Prepare filename prefix and suffix for an unique filename in upload folder.
String prefix = FilenameUtils.getBaseName(uploadedFile.getName());
String suffix = FilenameUtils.getExtension(uploadedFile.getName());

// Prepare file and outputstream.
File file = null;
OutputStream output = null;
try {
// Create file with unique name in upload folder and write to it.
file = File.createTempFile(prefix + "_", "." + suffix, new File("Your_Path"));
output = new FileOutputStream(file);
IOUtils.copy(uploadedFile.getInputStream(), output);

// Show succes message.
FacesContext.getCurrentInstance().addMessage("uploadForm", new FacesMessage(
FacesMessage.SEVERITY_INFO, "File upload succeed!", null));
} catch (IOException e) {
// Cleanup.
if (file != null) file.delete();

// Show error message.
FacesContext.getCurrentInstance().addMessage("uploadForm", new FacesMessage(
FacesMessage.SEVERITY_ERROR, "File upload failed with I/O error.", null));

// Always log stacktraces (with a real logger).
e.printStackTrace();
} finally {
IOUtils.closeQuietly(output);
}
}
}
return "done";
}

webxml attribute is required error on maven build of war

gullele — Fri, 23 Dec 2011 06:32:02 +0000

This error appears mostly when Maven could not find the web.xml file. If you are following the default maven structure, make sure the webapp folder is named correctly – like not webapps or something like that.
Once you make sure, you can try by explicitly telling maven where the web.xml file is using

 

org.apache.maven.plugins
maven-war-plugin
2.0

src/main/webapp/WEB-INF/web.xml

nosuchfielderror tokentypetoastclassmap Error in JPA

gullele — Wed, 14 Dec 2011 03:35:04 +0000

Did you come across this error while trying to access Hibernate query language like simple select?
The problem is mainly on the version of the antlr.jar
If you are not using Application server and putting all the jar by your self, check if you have added antlr-build.jar or some earlier version of that jar. Replace it and you should be fine.
Good luck.

Submit is not a function javascript error

gullele — Mon, 12 Dec 2011 18:34:26 +0000

Simple but annoying error.
This occurs when you access the submit function of the form. Check the button you used to submit is named submit or not – that is causing it!!

was not found in the haystack error for select element in zend

gullele — Wed, 05 Oct 2011 18:30:02 +0000

You might get this error while working on zend form which has select element on it. And most probably you are messing with this element on your controller or from your front end friend javascript [ that was in my case ]

Just put the following in the controller and you should be fine

$form->getElement('selectElementNameHere')->setRegisterInArrayValidator(FALSE);

This is a behavior of zend adding a default validator of inarray.
You would find more detailed explanation on zend website.

Adding new line for mail, outlook showing new line as it is

gullele — Thu, 29 Sep 2011 20:57:21 +0000

This has funny solution.
Most probably you are trying to have message and appending the character \r\n in single quote,
try it using double quotes as

$mail_message = "some message \n";

Assuming you are programming PHP..

An association from the table refers to an unmapped class Hibernate Exception

gullele — Sun, 28 Aug 2011 00:08:46 +0000

Got An association from the table

refers to an unmapped class exception while running hibernate on your app?
Here is a solution
Mostly it would be related to the hbm file of the table that it is complaining. On that hbm file, make sure if you have the class attribute on the option properly addressed like if you haven’t added the package on the top, make sure you provide the FQN of the class.

Also make sure if the hbm file is listed on the hibernate.cfg.xml/ where ever the list of the hbm files are listed.

Mostly this would solve the problem.

Updating repository with previous revision in SVN

gullele — Thu, 25 Aug 2011 05:20:14 +0000

OK, you want to update the current repository with one of your previous revisions. It could be a single file you want to update
Here is what you would do:
Lets assume you have a module/folder svnrepos and it has two files soap.php and xml.php
And lets say you want to update and commit the file soap.php with the previous revision number

1. Go to the folder svnrepos
2. type svn up to make it up-to-date
3. type svn log –limit 10 (or whatever deep you want to go the past revisions
4. From there you would grab the revision number you want to get back to.
Now the trick is merging the current revision and the one you want to get back to: lets say the revision number you want to get back is 7865
5. do svn merge full/path/to/repository/svnrepos/soap.php@HEAD full/path/to/repository/svn/repos/soap.php@7865 soap.php
This would update your local, which was up-to-date, to the one from 7865.
6 svn st would show you soap.php is updated
7. svn commit -m ‘Reverting back to old revision’

ZAT is IT!!

Run php from command line without script file

gullele — Tue, 16 Aug 2011 03:15:26 +0000

Do you want to run a quick php script, a line or two, without having file? Thanks for PHP’s cute command line option you can do that.
If you have some file the way to run it, as you know would be

php file.php

But without file if you want to run a simple function like date then use -r option

php -r "echo date();"

would do the trick

Also if you want to get explanation on some built-in function

php --rf strtoupper

would give you an explanation that is something like

Function [  function strtoupper ] {

  - Parameters [1] {
    Parameter #0 [  $str ]
  }
}

For more use php –help!!