Examples of org.osgi.service.blueprint.container.ReifiedType

Package org.osgi.service.blueprint.container

Examples of org.osgi.service.blueprint.container.ReifiedType

org.osgi.service.blueprint.container.ReifiedType
Provides access to a concrete type and its optional generic type parameters.
Java 5 and later support generic types. These types consist of a raw class with type parameters. This class models such a Type class but ensures that the type is reified. Reification means that the Type graph associated with a Java 5 Type instance is traversed until the type becomes a concrete class. This class is available with the {@link #getRawClass()} method. The optional type parameters are recursivelyrepresented as Reified Types.
In Java 1.4, a class has by definition no type parameters. This class implementation provides the Reified Type for Java 1.4 by making the raw class the Java 1.4 class and using a Reified Type based on the Object class for any requested type parameter.
A Blueprint extender implementations can subclass this class and provide access to the generic type parameter graph for conversion. Such a subclass must reify the different Java 5 Type instances into the reified form. That is, a form where the raw Class is available with its optional type parameters as Reified Types. @Immutable @version $Revision: 8083 $

            instance = new DummyDictionaryAsMap((Dictionary) o);
        } else {
            throw new ComponentDefinitionException("Specified map type does not implement the Map interface: " + mapType.getName());
        }


        ReifiedType defaultConvertKeyType = getType(keyType);
        ReifiedType defaultConvertValueType = getType(valueType);
                
        // add map entries
        try {
            for (Recipe[] entry : entries) {
                ReifiedType convertKeyType = workOutConversionType(entry[0], defaultConvertKeyType);
                Object key = convert(entry[0].create(), convertKeyType);
                // Each entry may have its own types
                ReifiedType convertValueType = workOutConversionType(entry[1], defaultConvertValueType);
                Object value = entry[1] != null ? convert(entry[1].create(), convertValueType) : null;
                instance.put(key, value);
            }
        } catch (Exception e) {
          throw new ComponentDefinitionException(e);

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        }
        return nestedRecipes;
    }


    protected Object internalCreate() throws ComponentDefinitionException {
        ReifiedType type;
        if (this.type instanceof Class) {
            type = new ReifiedType((Class) this.type);
        } else if (this.type instanceof String) {
            type = loadType((String) this.type);
        } else {
            type = new ReifiedType(Object.class);
        }


        // create array instance
        Object array;
        try {
            array = Array.newInstance(type.getRawClass(), list.size());
        } catch (Exception e) {
            throw new ComponentDefinitionException("Error while creating array instance: " + type);
        }


        int index = 0;

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            throw new Exception("Unable to convert ", getRealCause(e));
        }
    }
    
    private Object convertToCollection(Object obj, ReifiedType type) throws Exception {
        ReifiedType valueType = type.getActualTypeArgument(0);
        Collection newCol = (Collection) ReflectionUtils.newInstance(blueprintContainer.getAccessControlContext(), 
                                                                     CollectionRecipe.getCollection(toClass(type)));
        if (obj.getClass().isArray()) {
            for (int i = 0; i < Array.getLength(obj); i++) {
                try {

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        }
        return newCol;
    }


    private Object convertToDictionary(Object obj, ReifiedType type) throws Exception {
        ReifiedType keyType = type.getActualTypeArgument(0);
        ReifiedType valueType = type.getActualTypeArgument(1);
        Dictionary newDic = new Hashtable();
        if (obj instanceof Dictionary) {
            Dictionary dic = (Dictionary) obj;
            for (Enumeration keyEnum = dic.keys(); keyEnum.hasMoreElements();) {
                Object key = keyEnum.nextElement();

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        }
        return newDic;
    }


    private Object convertToMap(Object obj, ReifiedType type) throws Exception {
        ReifiedType keyType = type.getActualTypeArgument(0);
        ReifiedType valueType = type.getActualTypeArgument(1);
        Map newMap = (Map) ReflectionUtils.newInstance(blueprintContainer.getAccessControlContext(), 
                                                       MapRecipe.getMap(toClass(type)));
        if (obj instanceof Dictionary) {
            Dictionary dic = (Dictionary) obj;
            for (Enumeration keyEnum = dic.keys(); keyEnum.hasMoreElements();) {

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            obj = ((Collection) obj).toArray();
        }
        if (!obj.getClass().isArray()) {
            throw new Exception("Unable to convert from " + obj + " to " + type);
        }
        ReifiedType componentType;
        if (type.size() > 0) {
            componentType = type.getActualTypeArgument(0);
        } else {
            componentType = new GenericType(type.getRawClass().getComponentType());
        }

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    }


    private Object convert(String name, Object instance) throws ComponentDefinitionException {
        try {
            // Make sure to go through the conversion step in case we have a Convertible object
            return convert(instance, new ReifiedType(Object.class));
        } catch (Exception e) {
            throw new ComponentDefinitionException("Unable to convert instance " + name, e);
        }
    }

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    }


    @Override
    protected Class loadClass(String className) {
        ClassLoader loader = type instanceof Class ? ((Class) type).getClassLoader() : null;
        ReifiedType t = loadType(className, loader);
        return t != null ? t.getRawClass() : null;
    }

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            Object factoryObj = factory.create();
            
            // If the factory is a service reference, we need to get hold of the actual proxy for the service
            if (factoryObj instanceof ReferenceRecipe.ServiceProxyWrapper) {
                try {
                    factoryObj = ((ReferenceRecipe.ServiceProxyWrapper) factoryObj).convert(new ReifiedType(Object.class));
                } catch (Exception e) {
                    throw new ComponentDefinitionException("Error when instantiating bean " + getName() + " of class " + getType(), getRealCause(e));
                }
            }

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            Map<Method, List<Object>> nmatches = new HashMap<Method, List<Object>>();
            for (Method mth : methods) {
                boolean found = true;
                List<Object> match = new ArrayList<Object>();
                for (int i = 0; i < args.size(); i++) {
                    ReifiedType argType = new GenericType(mth.getGenericParameterTypes()[i]);
                    if (types.get(i) != null && !argType.getRawClass().equals(types.get(i).getRawClass())) {
                        found = false;
                        break;
                    }
                    if (!AggregateConverter.isAssignable(args.get(i), argType)) {
                        found = false;
                        break;
                    }
                    try {
                        match.add(convert(args.get(i), mth.getGenericParameterTypes()[i]));
                    } catch (Throwable t) {
                        found = false;
                        break;
                    }
                }
                if (found) {
                    nmatches.put(mth, match);
                }
            }
            if (nmatches.size() > 0) {
                matches = nmatches;
            }
        }
        // Find a direct match with conversion
        if (matches.size() != 1) {
            Map<Method, List<Object>> nmatches = new HashMap<Method, List<Object>>();
            for (Method mth : methods) {
                boolean found = true;
                List<Object> match = new ArrayList<Object>();
                for (int i = 0; i < args.size(); i++) {
                    ReifiedType argType = new GenericType(mth.getGenericParameterTypes()[i]);
                    if (types.get(i) != null && !argType.getRawClass().equals(types.get(i).getRawClass())) {
                        found = false;
                        break;
                    }
                    try {
                        Object val = convert(args.get(i), argType);

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Related Classes of org.osgi.service.blueprint.container.ReifiedType

org.apache.aries.blueprint.compendium.cm.CmManagedProperties

org.apache.aries.blueprint.container.AggregateConverter

org.apache.aries.blueprint.container.BeanRecipe

org.apache.aries.blueprint.container.BlueprintRepository

org.apache.aries.blueprint.container.ServiceRecipe

org.apache.aries.blueprint.di.AbstractRecipe

org.apache.aries.blueprint.di.ArrayRecipe

org.apache.aries.blueprint.di.CollectionRecipe

org.apache.aries.blueprint.di.MapRecipe

org.apache.felix.karaf.jaas.modules.properties.PropertiesConverterTest

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