There are arguments for both, but most of them stem from certain user requirements “what if you need to add logic for”, or “xxxx breaks encapsulation”. However, nobody has really commented on the theory, and given a properly reasoned argument. What is Hibernate/JPA actually doing when it persists an object – well, it is persisting … Read more
In python-3.7 this issue has been resolved by not evaluating the annotations at function definition time. Instead, they are preserved in __annotations__ in string form. This is called Postponed Evaluation of Annotations, introduced in PEP 563. Also note: Deprecation policy Starting with Python 3.7, a __future__ import is required to use the described functionality. No … Read more
You need to include a jar that this class exists in. You can find it here If using Maven, you can add the following dependency declaration: <dependency> <groupId>com.google.code.findbugs</groupId> <artifactId>jsr305</artifactId> <version>3.0.2</version> </dependency> and for Gradle: dependencies { testImplementation ‘com.google.code.findbugs:jsr305:3.0.2’ }
Use @JoinColumn instead of @Column: @ManyToOne @JoinColumn(name=”LicenseeFK”) private Licensee licensee;
There is a whole Section in the docs called 16.3.3.4 Mapping the request body with the @RequestBody annotation. And one called 16.3.3.5 Mapping the response body with the @ResponseBody annotation. I suggest you consult those sections. Also relevant: @RequestBody javadocs, @ResponseBody javadocs Usage examples would be something like this: Using a JavaScript-library like JQuery, you … Read more
Use the following: @SuppressWarnings({“unused”, “unchecked”})
Short answer: I guess these annotations are only useful for your IDE to warn you of potentially null pointer errors. As said in the “Clean Code” book, you should check your public method’s parameters and also avoid checking invariants. Another good tip is never returning null values, but using Null Object Pattern instead.
Function annotations are what you make of them. They can be used for documentation: def kinetic_energy(mass: ‘in kilograms’, velocity: ‘in meters per second’): … They can be used for pre-condition checking: def validate(func, locals): for var, test in func.__annotations__.items(): value = locals[var] msg = ‘Var: {0}\tValue: {1}\tTest: {2.__name__}’.format(var, value, test) assert test(value), msg def is_int(x): … Read more
Compile constants can only be primitives and Strings: 15.28. Constant Expressions A compile-time constant expression is an expression denoting a value of primitive type or a String that does not complete abruptly and is composed using only the following: Literals of primitive type and literals of type String Casts to primitive types and casts to … Read more
Lombok does indeed code against internal API, as Sean Patrick Floyd said. However, as lombok is ONLY involved in the compilation phase, its misleading to claim Lombok will only run on a sun VM. It’ll only compile on ecj or sun’s javac. However, the vast majority of VMs out there, if they ship a compiler … Read more