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

Class ClassUtils

java.lang.Object

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

public class ClassUtils
extends java.lang.Object

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

Field Summary

Fields

Modifier and Type	Field	Description
static java.lang.Class<?>	BUNDLE_CONTEXT_CLASS
static java.lang.Class<?>	COLLECTION_CLASS
static java.lang.Class<?>	COMPONENT_CONTEXT_CLASS
static java.lang.Class<?>	COMPONENTS_SERVICE_OBJECTS_CLASS
static java.lang.String	FORMATTER_LOGGER_CLASS
static java.lang.Class<?>	INTEGER_CLASS
static java.lang.Class<?>	LIST_CLASS
static java.lang.String	LOGGER_CLASS
static java.lang.String	LOGGER_FACTORY_CLASS
private static org.osgi.framework.BundleContext	m_context
static org.osgi.util.tracker.ServiceTracker<?,?>	m_packageAdmin
static java.lang.Class<?>	MAP_CLASS
static java.lang.Class<?>	MAP_ENTRY_CLASS
private static java.lang.Class<?>	OBJECT_CLASS
private static java.lang.String	PACKAGEADMIN_CLASS
static java.lang.Class<?>	SERVICE_REFERENCE_CLASS

Constructor Summary

Constructors

Constructor	Description
ClassUtils()

Method Summary

Modifier and Type	Method	Description
static void	close()
static java.lang.Class<?>	getClassFromComponentClassLoader(java.lang.Class<?> componentClass, java.lang.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 java.lang.Object	getPackageAdmin()
static java.lang.String	getPackageName(java.lang.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

PACKAGEADMIN_CLASS

private static final java.lang.String PACKAGEADMIN_CLASS

See Also:

Constant Field Values

OBJECT_CLASS

private static final java.lang.Class<?> OBJECT_CLASS

SERVICE_REFERENCE_CLASS

public static final java.lang.Class<?> SERVICE_REFERENCE_CLASS

COMPONENTS_SERVICE_OBJECTS_CLASS

public static final java.lang.Class<?> COMPONENTS_SERVICE_OBJECTS_CLASS

MAP_CLASS

public static final java.lang.Class<?> MAP_CLASS

MAP_ENTRY_CLASS

public static final java.lang.Class<?> MAP_ENTRY_CLASS

COLLECTION_CLASS

public static final java.lang.Class<?> COLLECTION_CLASS

LIST_CLASS

public static final java.lang.Class<?> LIST_CLASS

COMPONENT_CONTEXT_CLASS

public static final java.lang.Class<?> COMPONENT_CONTEXT_CLASS

BUNDLE_CONTEXT_CLASS

public static final java.lang.Class<?> BUNDLE_CONTEXT_CLASS

INTEGER_CLASS

public static final java.lang.Class<?> INTEGER_CLASS

LOGGER_CLASS

public static final java.lang.String LOGGER_CLASS

See Also:

Constant Field Values

FORMATTER_LOGGER_CLASS

public static final java.lang.String FORMATTER_LOGGER_CLASS

See Also:

Constant Field Values

LOGGER_FACTORY_CLASS

public static final java.lang.String LOGGER_FACTORY_CLASS

See Also:

Constant Field Values

m_context

private static org.osgi.framework.BundleContext m_context

m_packageAdmin

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

Constructor Detail

ClassUtils

public ClassUtils()

Method Detail

getClassFromComponentClassLoader

public static java.lang.Class<?> getClassFromComponentClassLoader(java.lang.Class<?> componentClass,
                                                                  java.lang.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 java.lang.Object getPackageAdmin()

close

public static void close()

getPackageName

public static java.lang.String getPackageName(java.lang.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.