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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
...is not foreign key (as there is no referenced entity to disable updating). By reading javadoc for updatable I would say that it will just disable to change Person for given Address if it is once persisted. Can you explain please?
– Flowy
Oct 3 '16 at 11:49
...
e.printStackTrace equivalent in python
...eption("Something awful happened!")
# will print this message followed by traceback
Output:
ERROR 2007-09-18 23:30:19,913 error 1294 Something awful happened!
Traceback (most recent call last):
File "b.py", line 22, in f
g()
File "b.py", line 14, in g
1/0
ZeroDivisionError: intege...
Setting property 'source' to 'org.eclipse.jst.jee.server:JSFTut' did not find a matching property
...eem to help my similar issue, which was a web.xml issue, which I found out by checking the context.xml which had this line in the <Context> section:
<WatchedResource>WEB-INF/web.xml</WatchedResource>
The solution in WARNING: Setting property 'source' to 'org.eclipse.jst.jee.serve...
Remove the last line from a file in Bash
...
@Miro : By no means is $ d a regex. It is a sed command. d is the command for deleting a line, while $ means "the last line in the file". When specifying a location (called "range" in sed lingo) before a command, that command is only...
What is a fat JAR? [duplicate]
...use the group is
org.apache.maven.plugins ...which is assumed by default.
-->
<artifactId>maven-assembly-plugin</artifactId>
<version>2.6</version>
<configuration>
<descriptorRefs>
<descript...
How to see log files in MySQL?
...s)
The Slow Query Log. Ιt consists of "slow" SQL statements (as
indicated by its name).
By default no log files are enabled in MYSQL. All errors will be shown in the syslog (/var/log/syslog).
To Enable them just follow below steps:
step1: Go to this file (/etc/mysql/conf.d/mysqld_safe_syslog.cn...
How to forward declare a template class in namespace std?
... even such a forward declaration in namespace std is explicitly prohibited by the standard: the only thing you're allowed to put in std is a template specialisation, commonly std::less on a user-defined type. Someone else can cite the relevant text if necessary.
Just #include <list> and don't...
MVC (Laravel) where to add logic
....
Repositories (Repository Pattern): At the beginning I was very confused by this. And, like you, I thought "well, I use MySQL and thats that.".
However, I have balanced the pros vs cons of using the Repository Pattern and now I use it. I think that now, at this very moment, I will only need to us...
Using jQuery to center a DIV on the screen
...eft : 0)+'px'});
});
}
});
})(jQuery);
Activated by this code :
$('#mainDiv').center();
PLUGIN VERSION
(function($){
$.fn.extend({
center: function (options) {
var options = $.extend({ // Default values
inside:window, // e...
Is it necessary to write HEAD, BODY and HTML tags?
...
Omitting the html, head, and body tags is certainly allowed by the HTML specs. The underlying reason is that browsers have always sought to be consistent with existing web pages, and the very early versions of HTML didn't define those elements. When HTML 2.0 first did, it was done in ...