org.castor.cpa.util
Class JDOClassDescriptorResolverImpl

java.lang.Object
  org.castor.cpa.util.JDOClassDescriptorResolverImpl

All Implemented Interfaces:

JDOClassDescriptorResolver, ClassDescriptorResolver

public class JDOClassDescriptorResolverImpl
extends Object
implements JDOClassDescriptorResolver

JDO-specific ClassDescriptorResolver instance that provides functionality to find or "resolve" ClassDescriptors from a given class (name).

Version:

$Revision: 8994 $ $Date: 2011-08-02 01:40:59 +0200 (Di, 02 Aug 2011) $

Author:

Werner Guttmann

See Also:

JDOClassDescriptorResolver

Field Summary

protected List<Class<?>>	_classes List of manually added domain Classes.
protected List<String>	_packages List of manually added package names.

Constructor Summary

JDOClassDescriptorResolverImpl()
Creates an instance of this class, with no classed manually added.

Method Summary

void	addClass(Class<?> domainClass) Adds a given Class instance manually, so that it can be loaded from the file system.
void	addPackage(String packageName) Adds a given package name manually, so that class descriptors can be loaded from this package (from the file system).
Iterator<ClassDescriptor>	descriptorIterator() Returns an iterator over all the known descriptors in the original order they have been added.
ClassLoader	getClassLoader() Returns the ClassLoader instance as used internally.
MappingLoader	getMappingLoader()
void	registerDescriptor(Class<?> type, ClassDescriptor classDescriptor) Registers a ClassDescriptor with the descriptor cache.
ClassDescriptor	resolve(Class<?> type) Returns the ClassDescriptor for the given class using the following strategy.
ClassDescriptor	resolve(String type) Returns the ClassDescriptor for the given class.
void	setMappingLoader(MappingLoader mappingLoader)

Methods inherited from class java.lang.Object

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

Field Detail

_classes

protected List<Class<?>> _classes

List of manually added domain Classes.

_packages

protected List<String> _packages

List of manually added package names.

Constructor Detail

JDOClassDescriptorResolverImpl

public JDOClassDescriptorResolverImpl()

Creates an instance of this class, with no classed manually added.

Method Detail

resolve

public ClassDescriptor resolve(String type)
                        throws ResolverException

Returns the ClassDescriptor for the given class.

Specified by:

resolve in interface JDOClassDescriptorResolver

Parameters:

type - the class name to find the ClassDescriptor for

Returns:

the ClassDescriptor for the given class

Throws:

ResolverException - Indicates that the given Class cannot be resolved.

resolve

public ClassDescriptor resolve(Class<?> type)
                        throws ResolverException

Returns the ClassDescriptor for the given class using the following strategy.

• Lookup the class descriptor cache
• Call ClassResolutionByMappingLoader command
• Call ClassResolutionByFile command

Specified by:

resolve in interface ClassDescriptorResolver

Parameters:

type - the Class to find the ClassDescriptor for

Returns:

the ClassDescriptor for the given class, null if not found

Throws:

ResolverException - Indicates that the given Class cannot be resolved.

registerDescriptor

public void registerDescriptor(Class<?> type,
                               ClassDescriptor classDescriptor)

Registers a ClassDescriptor with the descriptor cache.

Specified by:

registerDescriptor in interface JDOClassDescriptorResolver

Parameters:

type - Type of the class described by the ClassDescriptor to register.

classDescriptor - The ClassDescriptor to register with the cache.

getMappingLoader

public MappingLoader getMappingLoader()

Specified by:

getMappingLoader in interface ClassDescriptorResolver

setMappingLoader

public void setMappingLoader(MappingLoader mappingLoader)

Specified by:

setMappingLoader in interface ClassDescriptorResolver

addClass

public void addClass(Class<?> domainClass)

Adds a given Class instance manually, so that it can be loaded from the file system.

Specified by:

addClass in interface JDOClassDescriptorResolver

Parameters:

domainClass - A given Class instance.

addPackage

public void addPackage(String packageName)

Adds a given package name manually, so that class descriptors can be loaded from this package (from the file system).

Specified by:

addPackage in interface JDOClassDescriptorResolver

Parameters:

packageName - A given package name.

descriptorIterator

public Iterator<ClassDescriptor> descriptorIterator()

Returns an iterator over all the known descriptors in the original order they have been added. Each element is of type ClassDescriptor.

Specified by:

descriptorIterator in interface JDOClassDescriptorResolver

Returns:

an Iterator over all the known JDO class descriptors.

getClassLoader

public ClassLoader getClassLoader()

Returns the ClassLoader instance as used internally.

Specified by:

getClassLoader in interface JDOClassDescriptorResolver

Returns:

The ClassLoader instance used internally.