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Map enum in JPA with fixed values?
I'm looking for the different ways to map an enum using JPA. I especially want to set the integer value of each enum entry and to save only the integer value.
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How to fix: android.app.RemoteServiceException: Bad notification posted from package *: Couldn't cre
I'm seeing the following exception in crash logs:
22 Answers
22
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What is the difference between CascadeType.REMOVE and orphanRemoval in JPA?
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From here:-
Cascading Remove
Marking a reference field with CascadeType.REMOVE (or CascadeType.ALL,
which includes REMOVE) indicates that remove operations should be
cascaded automatically to entity objects that are referenced by that...
How to return an empty ActiveRecord relation?
If I have a scope with a lambda and it takes an argument, depending on the value of the argument, I might know that there will not be any matches, but I still want to return a relation, not an empty array:
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Get checkbox value in jQuery
How can I get a checkbox's value in jQuery?
17 Answers
17
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How do I access my SSH public key?
...b or cat ~/.ssh/id_dsa.pub
You can list all the public keys you have by doing:
$ ls ~/.ssh/*.pub
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The relationship could not be changed because one or more of the foreign-key properties is non-nulla
I am getting this error when I GetById() on an entity and then set the collection of child entities to my new list which comes from the MVC view.
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JavaScript and Threads
Is there some way to do multi-threading in JavaScript?
13 Answers
13
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NullPointerException accessing views in onCreate()
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The tutorial is probably outdated, attempting to create an activity-based UI instead of the fragment-based UI preferred by wizard-generated code.
The view is in the fragment layout (fragment_main.xml) and not in the activity layout (activity_main.xml). onCreate() i...
Cast int to varchar
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from t9;
select CONVERT(id, CHAR(50)) as colI1
from t9;
See the following SQL — in action — over at SQL Fiddle:
/*! Build Schema */
create table t9 (id INT, name VARCHAR(55));
insert into t9 (id, name) values (2, 'bob');
/*! SQL Queries */
select CAST(id as CHAR(50)) as col1 from t9;
sele...