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Postgres: “ERROR: cached plan must not change result type”
...ot change result type when trying to solve the problem in the context of a Java / JDBC application.
I was able to reliably reproduce the error by running schema upgrades (i.e. DDL statements) while my back-end app that used the DB was running. If the app was querying a table that had been changed ...
What is the difference between a 'closure' and a 'lambda'?
...
@AlexanderOrlov: They are both lambdas and closures. Java had closures before via anonymous inner classes. Now that functionality has been made syntactically easier via lambda expressions. So probably the most relevant aspect of the new feature is that there are now lambdas. It...
Setting up a deployment / build / CI cycle for PHP projects
... docs - run cross-platform.
Setting up a hudson server
Prerequisites:
Java (1.5 will serve you just fine)
Read access to the subversion server (I have a separate account for the hudson user)
From here, it's just:
java -jar hudson.war
This will run a small server instance right off your con...
Writing to output window of Visual Studio
...o the output window for debugging purposes. I searched for a function like Java's system.out.println("") . I tried Debug.Write , Console.Write , and Trace.Write . It does not give an error, but it does not print anything either.
...
Why invoke Thread.currentThread.interrupt() in a catch InterruptException block?
... level interrupt handlers will notice it and can handle it appropriately.
Java Concurrency in Practice discusses this in more detail in Chapter 7.1.3: Responding to Interruption. Its rule is:
Only code that implements a thread's interruption policy may swallow an interruption request. General-p...
What are the best use cases for Akka framework [closed]
I have heard lots of raving about Akka framework (Java/Scala service platform), but so far have not seen many actual examples of use cases it would be good for. So I would be interested in hearing about things developers have used it succesfully.
...
Shiro vs. SpringSecurity [closed]
I have currently evaluating Java based security frameworks, I am a Spring 3.0 user so it seemed that SpringSecurity would be the right Choice, but Spring security seems to suffer from excessive complexity, it certainly does not seem like it is making security easier to implement, Shiro seems to be m...
Eclipse doesn't highlight references anymore
...e you mean is configured by navigating to:
Window -> Preferences -> Java -> Editor -> Mark Occurrences
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Design Patterns: Factory vs Factory method vs Abstract Factory
...e usually called within Template Methods.
And also if possible, any java examples related to these patterns?
Factory and FactoryMethod
Intent:
Define an interface for creating an object, but let sub classes decide which class to instantiate. Factory Method lets a class defer instantiat...
Jackson JSON custom serialization for certain fields
...xception {
jsonGenerator.writeObject(tmpInt.toString());
}
}
Java should handle the autoboxing from int to Integer for you.
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