So, I have a categories entity set up with a parent_id being self-references. But for some reason when I save the entry in the form I get this error.
Fatal error: Cannot inherit previously-inherited or override constant MARKER from interface Doctrine\Common\Persistence\Proxy in /var/www/html/project/vendor/doctrine/orm/lib/Doctrine/ORM/Proxy/Proxy.php on line 30
Can't figure out what it might be. I set the relationship up according to the Doctrine documentation.
/**
* Set parent
*
* #param string $parent
* #return Category
*/
public function setParent($parent)
{
$this->parent = $parent;
return $this;
}
/**
* Get parent
*
* #return string
*/
public function getParent()
{
return $this->parent;
}
Any help would be much appreciated.
I encountered the exact same problem today after doing a change that should not affect Doctrine in any way (I altered a Twig template). After some time I realized that since it's a strange compile error on a strange moment, probably restarting php-fpm would do the trick. And it did.
Maybe restarting Apache does the same if you're on mod_php.
Restarting the server solved the problem for me.
(Using PHP 5.4.15, APC 3.1.13, Apache2.4.4, Doctrine2.2)
Apparently it was a bug in Doctrine-bundle. Updating it to version 1.2.* (and subsequently updating dependent packages) fixed the issue.
I have also encountered this problem with php-fpm 5.4.19, nginx 1.4 and APC 3.1.15 (?) on Centos6-64. As Mark was also mentioning, the use of the Remi repository which I used as well. It seems like the 3.1.15 isn't officially released yet. There isn't even a tag for it on the pecl page! It looks like Remi was trying to fix something to get it work and named it 3.1.15, but can't figure out exactly what it was that he was trying to fix.
Anyway I yum removed the package and installed the current release with the pecl command (now # 3.1.13), which resolved my problem.
Please understand that APC is dead, unmaintained, no stable version exists for PHP 5.4 (or greater).
I recommend you to switch to:
opcache (php-pecl-zendopcache) for opcode cache
APCu (php-pecl-apcu) for user data cache (which provides the same API than the old APC, without opcode cache)
Related
While working through a tutorial to start learning Grails, I made a mistake and ran:
grails create-domain-class com.FooBar
instead of:
grails create-domain-class com.acme.FooBar
It was immediately obvious I had made an error so I tried the following:
Searched for a function that reverses the create-domain-class command, it seems there isn't one.
Searched for advice on the web and the consensus is that you can delete a domain class file, any associated views and tests, then to be safe run a text search for your class name in your project directory for any references you may have missed. I have done all this.
Then I ran the correct command to create com.acme.FooBar, which worked.
After this the app fails to run and reports the following error:
org.hibernate.DuplicateMappingException: duplicate import: FooBar refers to both com.acme.FooBar and com.FooBar (try using auto-import="false")
After adding the following code to com.acme.FooBar:
...
static mapping = {
autoImport false
}
...
The app now runs as expected.
However as an experienced Java developer who occasionally does refactor a package I would like to understand how to do that without causing a DuplicateMappingException or resorting to the "autoImport false" solution.
Thanks.
You shouldn't be doing
static mapping = {
autoImport false
}
As, by doing this you said that don't check for domain just by name and look up for package as well. Hence, once you do that you will have to use Fully qualified name of the class in your queries / hqls which may itch sometimes.
You should be removing the Domain completely i.e.
remove the Domain
remove the view folder creating by default with very same name and so do the controller
Now, do grails clean-all(Make it a thumb rule to use grails clean-all first for any issue unexpectedly occuring).
To be more accurate do remove target directory from your project and then do run grails run-app.
I had done very same thing many times and got it resolved by above steps.
Hope it helps.
I can't seem to find a solution to access a MySQL server from an Objective-C Mac OS project (which uses ARC).
I tried to use the MySQL framework that Sequel Pro provides, but that crashes (EXC_i386_GPFLT) my App whenever I just create a connection object:
SPMySQLConnection *conn = [[SPMySQLConnection alloc] init];
I don't know whether that is a bug in the framework or if I need to do something else in order to use it.
I tried a few other libraries (like MySqueakQl) but none of them are ARC compatible.
Also I tried to link to libmysqlclient.a directly, but if I copy that library into my project, I get a code signing error; if I just link to the .a in /usr/local/mysql/lib/, I get another error: dyld: Library not loaded: libmysqlclient.18.dylib ... Reason: image not found. I have to admit that I have zero experince with using third-party libraries (whether .a or .dylib) and probably didn't do it right.
I'm a bit surprised that there doesn't seem to be an up-to-date (read: working) solution out there. I know, consumer apps rather use Core Data, but I have to access out company database server.
Has anybody seen a solution (libary?) that works more or less "out of the box"? I'd be willing to pay for something that actually works.
A good tutorial on how to use .a libraries in Xcode projects that would also help me to understand where the dylib error comes from would also be very helpful.
Problem solved. I probably made some mistake when including the library.
The right steps to do this:
Drag the libmysqlclient.a library into your project window
Make sure you set Copy items if needed to Yes, and that it is added to your main target
Drag a folder containing the headers (found under /usr/local/mysql/include) into your project window
Again, make sure you set Copy items if needed to Yes and the correct target is checked.
Then:
#import "mysql.h"
- (BOOL) mySQLTest {
MYSQL connection;
mysql_init(&connection);
if(!mysql_real_connect(&connection,
[self.host UTF8String],
[self.user UTF8String],
[self.password UTF8String],
[self.database UTF8String],
self.port,
NULL,
0)) {
return NO;
}
// ... work with the DB
mysql_close(&connection);
return YES;
}
Works like a charm.
I have no idea why on my former attempts I got an error about the dylib; I never used it (only the static library).
The code signing issue may have been just a bug or one-time quirk in Xcode.
Using PhpStorm 8.0.3.
Let's say I have this function:
public function myFunction($argA, $argB) {
// ...
}
And I'm calling it from somewhere else in the project with one extra argument, like:
$myClass->myFunction($arg1, $arg2, $arg3);
I know this is not considered an error in PHP, and it can be useful in some scenarios... but it is wrong according to my own coding standards, so I just wanted to know if there's a way to make PhpStorm to warn me if I'm doing it somewhere...
You cannot do anything about it in PhpStorm v8.0.3.
But PhpStorm v9 already has separate inspection for that. If you want -- try v9 EAP build now.
I'm currently develop an Objective-C library that links to the MariaDB C connector. I believe there is a problem with the library, though.
Every time I execute my code I get very strange errors on the console. The -(id)init method of my library calls mysql_init(NULL) to initialise the library but as soon as I return from -(id)init I get the following errors in the console:
Object 0x10643df70 of class XXX autoreleased with no pool in place - just leaking - break on objc_autoreleaseNoPool() to debug
Thing is, there is no multithreaded code being executed and if I run the same - (id)init without the call to mysql_init(NULL) the errors disappear. I believe the libmariadb library is causing these errors to appear. I don't get why though.
Do I need to build it with any special command line switches? Am I calling the right methods? I obviously used the MySQL online documentation as a guide.
Make sure you add this anytime you have a new thread:
#autoreleasepool {
//enter code here
}
Have you tried latest revision from launchpad?
Also try to build libmariadb with -DUNDEF_THREADS_HACK and
CMAKE_USE_PTHREADS:BOOL=OFF)
I was busy with other stuff for a while. I've since updated MariaDB to the latest version and, as far as I can tell, it works fine.
I'm using the WkHtmlToXSharp wrapper library in my project to generate PDF file from HTML.
I was using this library a lot of times in different PCs and, suddenly, I came across the following problem:
System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at WkHtmlToXSharp.WkHtmlToPdfConverter.wkhtmltopdf_convert(IntPtr converter)
at WkHtmlToXSharp.WkHtmlToPdfConverter.Convert(String inputHtml)
at WkHtmlToXSharp.WkHtmlToPdfConverter.Convert()
at WkHtmlToXSharp.MultiplexingConverter.b_8()
--- End of inner exception stack trace ---
at Sanford.Threading.DelegateQueue.EndInvoke(IAsyncResult result)
at Sanford.Threading.DelegateQueue.Invoke(Delegate method, Object[] args)
at WkHtmlToXSharp.MultiplexingConverter.Convert()
This seems to be a common problem with this library (I've found some feedback on the web about it - however no fix was provided). BTW, in my case it happens somewhat randomly. I was not experiencing this problem in other dev machines. I wonder if somebody has a fix for it. I also wonder if this is a problem with the wrapper library, if with the WkHtmlToPDF library itself.
Any suggestion? I'm also open to use another converter, as long as it is free and stable and, if possible, without spawning a new process. It must work properly and stable in all Windows versions and do a decent job converting (the HTML to be converted is fixed - contains a few pics and tables and basic CSS).
I would suggest an alternate route: simply use wkhtmltopdf.exe directly, building your own wrapper. They are not very complicated if you have control of the input and then you know exactly how to update it and how the options work. I've never encountered with that problem when using wkhtmltopdf directly (on Win7, Win server 2008 r2, Ubuntu and CentOS). They do spawn process for every conversion though.
For an example, check out the Derp class in another answer of mine regarding wkhtmltopdf. Or try something like the untested code below (your true code will be more complicated, this is just a demo/POC).
var pi = new ProcessStartInfo(#"c:\wkhtmltopdf\wkhtmltopdf.exe");
pi.CreateNoWindow = true;
pi.UseShellExecute = false;
pi.WorkingDirectory = #"c:\wkhtmltopdf\";
pi.Arguments = "http://www.google.com gogl.pdf";
using (var process = Process.Start(pi))
{
process.WaitForExit(99999);
Debug.WriteLine(process.ExitCode);
}