Package org.apache.felix.scr.impl.inject

Class ClassUtils

java.lang.Object

org.apache.felix.scr.impl.inject.ClassUtils

public class ClassUtils
extends Object

Utility methods for class handling used by method and field references.

Field Summary

Fields

Modifier and Type	Field	Description
static Class<?>	BUNDLE_CONTEXT_CLASS
static Class<?>	COLLECTION_CLASS
static Class<?>	COMPONENT_CONTEXT_CLASS
static Class<?>	COMPONENTS_SERVICE_OBJECTS_CLASS
static String	FORMATTER_LOGGER_CLASS
static Class<?>	INTEGER_CLASS
static Class<?>	LIST_CLASS
static String	LOGGER_CLASS
static String	LOGGER_FACTORY_CLASS
static org.osgi.util.tracker.ServiceTracker<?,?>	m_packageAdmin
static Class<?>	MAP_CLASS
static Class<?>	MAP_ENTRY_CLASS
static Class<?>	SERVICE_REFERENCE_CLASS

Constructor Summary

Constructors

Constructor	Description
ClassUtils()

Method Summary

Modifier and Type	Method	Description
static void	close()
static Class<?>	getClassFromComponentClassLoader(Class<?> componentClass, String className, ComponentLogger logger)	Returns the class object representing the class of the field reference The class loader of the component class is used to load the service class.
static Object	getPackageAdmin()
static String	getPackageName(Class<?> clazz)	Returns the name of the package to which the class belongs or an empty string if the class is in the default package.
static void	setBundleContext(org.osgi.framework.BundleContext bundleContext)

Methods inherited from class java.lang.Object

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

Field Detail

SERVICE_REFERENCE_CLASS

public static final Class<?> SERVICE_REFERENCE_CLASS

COMPONENTS_SERVICE_OBJECTS_CLASS

public static final Class<?> COMPONENTS_SERVICE_OBJECTS_CLASS

MAP_CLASS

public static final Class<?> MAP_CLASS

MAP_ENTRY_CLASS

public static final Class<?> MAP_ENTRY_CLASS

COLLECTION_CLASS

public static final Class<?> COLLECTION_CLASS

LIST_CLASS

public static final Class<?> LIST_CLASS

COMPONENT_CONTEXT_CLASS

public static final Class<?> COMPONENT_CONTEXT_CLASS

BUNDLE_CONTEXT_CLASS

public static final Class<?> BUNDLE_CONTEXT_CLASS

INTEGER_CLASS

public static final Class<?> INTEGER_CLASS

LOGGER_CLASS

public static final String LOGGER_CLASS

See Also:

Constant Field Values

FORMATTER_LOGGER_CLASS

public static final String FORMATTER_LOGGER_CLASS

See Also:

Constant Field Values

LOGGER_FACTORY_CLASS

public static final String LOGGER_FACTORY_CLASS

See Also:

Constant Field Values

m_packageAdmin

public static volatile org.osgi.util.tracker.ServiceTracker<?,?> m_packageAdmin

Constructor Detail

ClassUtils

public ClassUtils()

Method Detail

getClassFromComponentClassLoader

public static Class<?> getClassFromComponentClassLoader(Class<?> componentClass,
                                                        String className,
                                                        ComponentLogger logger)

Returns the class object representing the class of the field reference The class loader of the component class is used to load the service class.

It may well be possible, that the class loader of the target class cannot see the service object class, for example if the service reference is inherited from a component class of another bundle.

Returns:

The class object for the referred to service or null if the class loader of the targetClass cannot see that class.

setBundleContext

public static void setBundleContext(org.osgi.framework.BundleContext bundleContext)

getPackageAdmin

public static Object getPackageAdmin()

close

public static void close()

getPackageName

public static String getPackageName(Class<?> clazz)

Returns the name of the package to which the class belongs or an empty string if the class is in the default package.