com.solarmetric.kodo.runtime
Class JDOClassResolver

java.lang.Object
  |
  +--com.solarmetric.kodo.runtime.JDOClassResolver

All Implemented Interfaces:

ClassResolver

public class JDOClassResolver

extends Object

implements ClassResolver

An imeplementation of ClassResolver that behaves in strict accordance to section 12.5 of the JDO specification:

JDO requires access to class instances in several situations where the class instance is not provided explicitly. In these cases, the only information available to the implementation is the name of the class.

To resolve class names to class instances, JDO implementations will use Class.forName (String name, ClassLoader loader) with up to three loaders. These loaders will be used in this order:

• The loader that loaded the class or instance referred to in the API that caused this class to be loaded.
• The loader returned in the current context by Thread.getContextClassLoader().
• The loader returned by Thread.getContextClassLoader() at the time of PersistenceManagerFactory.getPersistenceManager(). This loader is saved with the PersistenceManager and cleared when the PersistenceManager is closed.

Constructor Summary

(package private)

JDOClassResolver(PersistenceManagerImpl pm, ClassLoader cl)

Method Summary

boolean	canResolveClass(String className)
boolean	equals(Object other) Returns true if the two JDOClassResolvers use the same list of ClassLoaders, since they will resolve classes in exactly the same way.
int	hashCode() This method must be overridden for the standard hashCode() contract that is used when overriding the equals methos.
Class	resolveClass(String className) Resolve the class for the specified name.
InputStream	resolveResource(String resourceName)
String	toString()

Methods inherited from class java.lang.Object

, clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

JDOClassResolver

JDOClassResolver(PersistenceManagerImpl pm,
                 ClassLoader cl)

Method Detail

resolveClass

public Class resolveClass(String className)

Description copied from interface: ClassResolver

Resolve the class for the specified name.

Specified by:

resolveClass in interface ClassResolver

Following copied from interface: com.solarmetric.util.classes.ClassResolver

Parameters:

className - the specified name to load

Returns:

the resolved class

Throws:

JDOFatalUserException - if the class cannot be loaded.

resolveResource

public InputStream resolveResource(String resourceName)

Specified by:

resolveResource in interface ClassResolver

canResolveClass

public boolean canResolveClass(String className)

Specified by:

canResolveClass in interface ClassResolver

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object other)

Returns true if the two JDOClassResolvers use the same list of ClassLoaders, since they will resolve classes in exactly the same way.

Specified by:

equals in interface ClassResolver

Overrides:

equals in class Object

Following copied from interface: com.solarmetric.util.classes.ClassResolver

See Also:

Object.equals(Object)

hashCode

public int hashCode()

Description copied from interface: ClassResolver

This method must be overridden for the standard hashCode() contract that is used when overriding the equals methos.

Specified by:

hashCode in interface ClassResolver

Overrides:

hashCode in class Object

Following copied from interface: com.solarmetric.util.classes.ClassResolver

See Also:

Object.hashCode()