[T5] How to call hibernate session in TypeCoercer?

[Jun Tsai]

hi,
I want to add a TypeCoercer using tapestry-hibernate.

public  static void contributeTypeCoercer(
           Configuration<CoercionTuple> configuration,
           @Inject
           final Session session) {
       Coercion<PersistModel, String> coercion1 = new
Coercion<PersistModel, String>() {
           public String coerce(PersistModel input) {
               return getEntityClass(input).getName()+ ":"
               + session.getIdentifier(input);
           }
       };

  configuration.add(new CoercionTuple<PersistModel, String>(
               PersistModel.class, String.class, coercion1));
       Coercion<String,PersistModel> coercion2= new
Coercion<String,PersistModel>() {
           public PersistModel coerce(String input) {
               String [] strs=input.split(":");
               return (PersistModel) session.get(strs[0],strs[1]);
           }
       };

       configuration.add(new CoercionTuple< String,PersistModel>(
               String.class, PersistModel.class, coercion2));
}

java.lang.RuntimeException: Exception constructing service
'ServletApplicationInitializer': Unable to instantiate class
org.apache.tapestry.services.TapestryModule as a module builder: Exception
constructing service 'Alias': Error invoking service builder method
org.apache.tapestry.services.TapestryModule.build(Log, String, AliasManager,
Collection) (at TapestryModule.java:249) (for service 'Alias'): Exception
constructing service 'TypeCoercer': Error invoking constructor
org.apache.tapestry.ioc.internal.services.TypeCoercerImpl(Collection) (at
TypeCoercerImpl.java:101) (for service 'TypeCoercer'): Error invoking
service contribution method
lichen.services.AppModule.contributeTypeCoercer(Configuration,
Session): Exception constructing service 'Alias': Construction of service
'Alias' has failed due to recursion: the service depends on itself in some
way. Please check org.apache.tapestry.services.TapestryModule.build(Log,
String, AliasManager, Collection) (at TapestryModule.java:249) for
references to another service that is itself dependent on service 'Alias'.



Session depends Alias ,and Alias depends TypeCoercer.

How to fix?

Thanks.
Jun Tsai

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