Status: New
Owner: ----
New issue 798 by chatree.srich...@gmail.com: Let factory create an object
depends on annotation defined at left hand side?
http://code.google.com/p/google-guice/issues/detail?id=798
Description of the issue:
Is it possible to let factory create an object depends on annotation
defined at left hand side?
At the moment I have 2 annotation types, A and B.
@Retention(RetentionPolicy.RUNTIME)
@BindingAnnotation
public @interface A {}
@Retention(RetentionPolicy.RUNTIME)
@BindingAnnotation
public @interface B {}
And interface and its implementation:
public interface ResultSet {}
public class ResultSetA implements ResultSet {}
public class ResultSetA implements ResultSet {}
I have a factory.
public interface ResultSetFactory {
@A
public ResultSet createResultSetA(String sql);
@B
public ResultSet createResultSetB(String sql);
}
And I setup the factory like this:
install(new FactoryModuleBuilder()
.implement(ResultSet.class, A.class, ResultSetA.class)
.implement(ResultSet.class, B.class, ResultSetB.class)
.build(ResultSetFactory.class));
However, I don't want to create methods everytime I have a new ResultSet(*).
So I want to change the factory to be:
public interface ResultSetFactory {
public ResultSet create(String sql);
}
And use the new factory like this:
@A ResultSet resultSetA = factory.create(sql);
@B ResultSet resultSetB = factory.create(sql);
...
...
So, my question is, is there any way to do like this?
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