ClassUtils (Bridje IoC 0.6.1 API)

java.lang.Object
- org.bridje.ioc.impl.ClassUtils

```
public class ClassUtils
extends Object
```
Utility method for class and type handling.

Constructor Summary

Constructors
Constructor and Description

ClassUtils()

Constructors
Constructor and Description
`ClassUtils()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static Type`	`arrayType(Type service)` Find the Type of an array.
`static Type`	`collectionType(Type service)` Find the Type of collection.
`static Collection`	`createCollection(Class collectionCls, Object[] data)` Given a collection type this method will return the appropied instance for it.
`static Map`	`createMap(Class mapCls, Object[] data)` Given a map type this method will return the appropied instance for it.
`static Object`	`createMultiple(Type service, Object[] data)` Given a multiple type, (array, collection, or map) this method will return the appropied instance for it.
`static int`	`findPriority(Class<?> cls)` Finds te priority value for a class, from it´s @Priority annotation if it haveit.
`static boolean`	`hasGenericDeclaration(Type type)` Determines whenever the especified type has a wildcard or TypeVariable declaration whiting.
`static boolean`	`isArray(Type service)` Determines whenever the passed type is an array.
`static boolean`	`isCollection(Type service)` Determines whenever the passed type is a collection.
`static boolean`	`isMap(Type service)` Determines whenever the passed type is a map.
`static boolean`	`isMultiple(Type service)` Determines whenever the passed type is an array, a java collection like List or Set, or a java Map.
`static Type`	`mapType(Type service)` Find the Type of a map.
`static Type`	`multipleType(Type service)` Find the Type of an array, map or collection.
`static Type`	`parameterType(Type service, int index)` Returns the specified parameter from the ParameterizedType.
`static Class`	`rawClass(Type service)` Gets the raw class for the especified Type.
`static void`	`sort(List<Class<?>> value)` Sorts a list of components by priority.
`static Collection<Class<?>>`	`toClasses(Collection instances)` Gets a collection with all the classes of the objects from the especified collection.
`static Type`	`typeOf(WildcardType service)` Gets the upper bounds Type for a WildcarType.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- ClassUtils
```
public ClassUtils()
```

Method Detail

typeOf

public static Type typeOf(WildcardType service)

Gets the upper bounds Type for a WildcarType.

 ? extends SomeService               = SomeService
 ? extends SomeService<String> = SomeService<String>

Parameters:: service - The wildcardType to inspect.
Returns:: The upper bounds Type of the WildcardType.

multipleType
```
public static Type multipleType(Type service)
```
Find the Type of an array, map or collection.
```
 SomeService[]                 = SomeService
 List<SomeService>       = SomeService
 Map<Class, SomeService> = SomeService
 
```
Parameters:

service - The inner type of the multiple type passed.

Returns:

A type representing the inner type for the collection, array or map passed.

arrayType
```
public static Type arrayType(Type service)
```
Find the Type of an array.
```
 SomeService[] = SomeService
 
```
Parameters:

service - The inner type of the array type passed.

Returns:

A type representing the inner type for the array type passed.

collectionType
```
public static Type collectionType(Type service)
```
Find the Type of collection.
```
 List<SomeService> = SomeService
 Set<SomeService>  = SomeService
 
```
Parameters:

service - The inner type of the array type passed.

Returns:

A type representing the inner type for the collection type passed.

mapType
```
public static Type mapType(Type service)
```
Find the Type of a map.
```
 Map<Class, SomeService>     = SomeService
 HashMap<Class, SomeService> = SomeService
 
```
Parameters:

service - The inner type of the array type passed.

Returns:

A type representing the inner type for the map type passed.

parameterType
```
public static Type parameterType(Type service,
                                 int index)
```
Returns the specified parameter from the ParameterizedType.

Parameters:

service - The ParameterizedType type to search the parameter.

index - The index of the actual parameter.

Returns:

If service is a ParameterizedType and the parameter is available it will return it, or null otherwise.

isMultiple

public static boolean isMultiple(Type service)

Determines whenever the passed type is an array, a java collection like List or Set, or a java Map.

 SomeService                       = false
 SomeService[]                     = true
 List<SomeService>           = true
 Map<Class, SomeService>     = true
 MyListImpl<SomeService>     = false
 HashMap<Class, SomeService> = true

Parameters:: service - The type to inspect.
Returns:: true if the especified type is an array, a collection or map from java languaje.

isArray

public static boolean isArray(Type service)

Determines whenever the passed type is an array.

 SomeService                       = false
 SomeService[]                     = true
 List<SomeService>           = false
 List<SomeService>[]         = true
 Map<Class, SomeService>     = false
 MyListImpl<SomeService>     = false
 HashMap<Class, SomeService> = false

Parameters:: service - The type to inspect.
Returns:: true if the especified type is an array.

isCollection

public static boolean isCollection(Type service)

Determines whenever the passed type is a collection.

 SomeService                       = false
 SomeService[]                     = false
 List<SomeService>           = true
 List<SomeService>[]         = true
 Map<Class, SomeService>     = false
 MyListImpl<SomeService>     = false
 HashMap<Class, SomeService> = false

Parameters:: service - The type to inspect.
Returns:: true if the especified type is a List Set or other java collection except a map.

isMap

public static boolean isMap(Type service)

Determines whenever the passed type is a map.

 SomeService                       = false
 SomeService[]                     = false
 List<SomeService>           = false
 List<SomeService>[]         = false
 Map<Class, SomeService>     = true
 MyListImpl<SomeService>     = false
 HashMap<Class, SomeService> = true

Parameters:: service - The type to inspect.
Returns:: true if the especified type is a java Map.

rawClass

public static Class rawClass(Type service)

Gets the raw class for the especified Type.

 SomeService                       = SomeService
 SomeService[]                     = SomeService[]
 List<SomeService>           = List
 List<SomeService>[]         = List[]
 Map<Class, SomeService>     = Map
 MyListImpl<SomeService>     = MyListImpl
 HashMap<Class, SomeService> = HashMap

Parameters:: service - The type to take the raw class from.
Returns:: The raw class for the given type.

toClasses
```
public static Collection<Class<?>> toClasses(Collection instances)
```
Gets a collection with all the classes of the objects from the especified collection.

Parameters:

instances - The objects to obtain it´s classes from.

Returns:

A Collection object with all the classes of the object´s in the collection passed.

findPriority
```
public static int findPriority(Class<?> cls)
```
Finds te priority value for a class, from it´s @Priority annotation if it haveit.

Parameters:

cls - The class to find it´s priority.

Returns:

The int value of the priority, by default the priority will be Integer.MAX_VALUE if not especified directly in the component.

createMultiple

public static Object createMultiple(Type service,
                                    Object[] data)

Given a multiple type, (array, collection, or map) this method will return the appropied instance for it.

 SomeService                       = null
 SomeService[]                     = SomeService[]
 List<SomeService>           = ArrayList
 List<SomeService>[]         = List[]
 Map<Class, SomeService>     = Map
 MyListImpl<SomeService>     = null
 HashMap<Class, SomeService> = HashMap

Parameters:: service - The type of the array, collection or map.; data - The data to put on the result listing.
Returns:: The proper object for the especified type.

createCollection

public static Collection createCollection(Class collectionCls,
                                          Object[] data)
                                   throws InstantiationException,
                                          IllegalAccessException

Given a collection type this method will return the appropied instance for it.

 SomeService                       = null
 SomeService[]                     = null
 List<SomeService>           = ArrayList
 LinkedList<SomeService>     = LinkedList
 List<SomeService>[]         = null
 Map<Class, SomeService>     = null
 MyListImpl<SomeService>     = null
 HashMap<Class, SomeService> = null

Parameters:: collectionCls - The class for the collection.; data - The data for the collection.
Returns:: The collection.
Throws:: InstantiationException - if the collection cannot be instance.; IllegalAccessException - security exception.

createMap

public static Map createMap(Class mapCls,
                            Object[] data)
                     throws InstantiationException,
                            IllegalAccessException

Given a map type this method will return the appropied instance for it.

 SomeService                       = null
 SomeService[]                     = null
 List<SomeService>           = null
 List<SomeService>[]         = null
 Map<Class, SomeService>     = Map
 MyListImpl<SomeService>     = null
 HashMap<Class, SomeService> = HashMapl

Parameters:: mapCls - The clss for the map.; data - The data for the map.
Returns:: The map.
Throws:: InstantiationException - if the collection cannot be instance.; IllegalAccessException - security exception.

sort
```
public static void sort(List<Class<?>> value)
```
Sorts a list of components by priority.

Parameters:

value - The list of classes to sort.

hasGenericDeclaration
```
public static boolean hasGenericDeclaration(Type type)
```
Determines whenever the especified type has a wildcard or TypeVariable declaration whiting.
```
 SomeService<T>      = true
 SomeService<?>      = true
 SomeService               = false
 SomeService<String> = false
 
```
Parameters:

type - The type to inspect.

Returns:

true the especified type has a generic declaration, false otherwise.

Class ClassUtils

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ClassUtils

Method Detail

typeOf

multipleType

arrayType

collectionType

mapType

parameterType

isMultiple

isArray

isCollection

isMap

rawClass

toClasses

findPriority

createMultiple

createCollection

createMap

sort

hasGenericDeclaration