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What is the easiest way to ignore a JPA field during persistence?
...he JPA annotation marking a field as not persistable
transient keyword in java. Beware - using this keyword, will prevent the field to be used with any serialization mechanism from java. So, if the field must be serialized you'd better use just the @Transient annotation.
...
What can , and be used for?
...ent (dto), here this is Sender_DTO and assign to senderMB._strID
Sender_MB.java
public String clickBtnDetail(sender_DTO sender_dto) {
this._strID = sender_dto.getStrID();
return "Receiver?faces-redirect=true&includeViewParams=true";
}
The link when clicked will become ht...
How to count the number of set bits in a 32-bit integer?
...for a particular language (e.g. using uint32_t for C++ and >>> in Java):
int numberOfSetBits(uint32_t i)
{
// Java: use int, and use >>> instead of >>
// C or C++: use uint32_t
i = i - ((i >> 1) & 0x55555555);
i = (i & 0x33333333) + ((i >&...
How do I view the SQLite database on an Android device? [duplicate]
...database is to use the library DatabaseManager_For_Android.
It's a single Java activity file; just add it to your source folder.
You can view the tables in your app database, update, delete, insert rows to you table. Everything from inside your app.
When the development is done remove the Java fil...
What are bitwise shift (bit-shift) operators and how do they work?
I've been attempting to learn C in my spare time, and other languages (C#, Java, etc.) have the same concept (and often the same operators) ...
...
RESTful Services - WSDL Equivalent
...ety of downloadable clients developed for the major programming languages (Java, .NET, PHP, etc). In my opinion, this places a lot of burden on the service provider.
– dana
Nov 6 '10 at 16:42
...
How to reload a clojure file in REPL
... before loading the new code.
myapp.web=> (refresh)
CompilerException java.lang.RuntimeException: Unable to resolve symbol: refresh in this context, compiling:(/private/var/folders/ks/d6qbfg2s6l1bcg6ws_6bq4600000gn/T/form-init819543191440017519.clj:1:1)
You could use the fully qualified var n...
How to return a result from a VBA function
...the return value to the function name is still not exactly the same as the Java (or other) return statement, because in java, return exits the function, like this:
public int test(int x) {
if (x == 1) {
return 1; // exits immediately
}
// still here? return 0 as default.
re...
Static class initializer in PHP
..., and it wouldn't work if it's private. Isn't there a cleaner way like the java static class initializer?
– Pacerier
Aug 7 '13 at 9:28
...
Storing a Map using JPA
...tCollection annotation that you can use in conjunction with the support of java.util.Map collections.
Something like this should work:
@Entity
public class Example {
@Id long id;
// ....
@ElementCollection
@MapKeyColumn(name="name")
@Column(name="value")
@CollectionTable(na...