org.apache.polygene.api.common

Class MetaInfo

java.lang.Object

org.apache.polygene.api.common.MetaInfo

public final class MetaInfo
extends Object

Used to declare and access meta-info.

This is effectively an internal class and should not be used directly.

MetaInfo can be set on composites during the assembly phase, a.k.a the bootstrap process. MetaInfo is any additional data that one wishes to associate at the 'class level' instead of instance level of a composite declaration.

To set the MetaInfo on a Composite, call the setMetaInfo() methods on the various composite declaration types, such as;

 public void assemble( ModuleAssembly module )
     throws AssemblyException
 {
     Map<String,String> properties = ...;
     module.services( MyService.class ).setMetaInfo( properties );
 }
 

which can later be retrieved by calling the metaInfo() method on the composite itself. For the example above that would be;

 @Mixins(MyServiceMixin.class)
 public interface MyService extends ServiceComposite
 {

 }

 public abstract class MyServiceMixin
     implements MyService
 {
     private Properties props;

     public MyServiceMixin()
     {
         props = metaInfo( Map.class );
     }
 }
 

Constructor Summary

Constructors

Constructor and Description
MetaInfo()
MetaInfo(MetaInfo metaInfo)

Method Summary

Modifier and Type	Method and Description
<T> void	add(Class<T> infoType, T info)
<T> T	get(Class<T> metaInfoType)
void	remove(Class serviceFinderClass)
void	set(Object metaInfo)
String	toString()
MetaInfo	withAnnotations(AnnotatedElement annotatedElement)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MetaInfo

public MetaInfo()

MetaInfo

public MetaInfo(MetaInfo metaInfo)

Method Detail

set

public void set(Object metaInfo)

get

public <T> T get(Class<T> metaInfoType)

add

public <T> void add(Class<T> infoType,
                    T info)

withAnnotations

public MetaInfo withAnnotations(AnnotatedElement annotatedElement)

toString

public String toString()

Overrides:

toString in class Object

remove

public void remove(Class serviceFinderClass)