Hi,
I'm using a dao pattern, the call
QueryManager.getInstance().getQueryRunner().query(...);
is executed in my dao object.
Servlet calls dao method.
What do you mean with it depends of your project size?
Thanks a lot
Diego
> Hi,
> It seems correct, why not, QueryRunner object is thread safe.
> Web layer which calls integration layer directly, it's a bad design but
> this
> depends of your project size.
>
> Jérome.
>
>
>
> Selon [EMAIL PROTECTED]:
>
>> Hi, I'm developing a web application using DbUtils classes to execute
>> queries and so on.
>>
>> I user QueryRunner class with a DataSource.
>>
>> I red this class is thread safe, so I implemented a Singleton to
>> instance
>> QueryRunner only once.
>>
>> This is my code:
>>
>> public class QueryManager {
>>
>> private static QueryManager queryManager = null;
>>
>> private static QueryRunner queryRunner = null;
>>
>> static {
>> try {
>> queryRunner = new QueryRunner(DataSourceSingleton.getInstance()
>> .getDataSource());
>> } catch (Exception e) {
>> }
>> }
>>
>> public static QueryManager getInstance() {
>> if (queryManager == null) {
>> queryManager = new QueryManager();
>> }
>> return queryManager;
>> }
>>
>> public QueryRunner getQueryRunner() {
>> return queryRunner;
>> }
>>
>> In my servlets I use:
>>
>> QueryManager.getInstance().getQueryRunner().query(...);
>>
>> Is this correct?
>>
>> Which is the best practice to use QueryRunner in a web context?
>>
>> Thanks a lot in advance
>>
>>
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>
>
>
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