Module openj9.sharedclasses

Package com.ibm.oti.shared

Class SharedClassAbstractHelper

java.lang.Object

com.ibm.oti.shared.SharedAbstractHelper

com.ibm.oti.shared.SharedClassAbstractHelper

All Implemented Interfaces:

SharedClassHelper, SharedHelper

public abstract class SharedClassAbstractHelper
extends SharedAbstractHelper
implements SharedClassHelper

SharedClassAbstractHelper provides common functions and data to class helper subclasses.

See Also:

• SharedClassHelper
• SharedAbstractHelper

Constructor Summary

Constructors

Constructor	Description
SharedClassAbstractHelper()	Constructs a new instance of this class.

Method Summary

Modifier and Type	Method	Description
SharedClassFilter	getSharingFilter()	Returns the SharedClassFilter associated with this helper.
boolean	isSharedClassCookie(byte[] classBytes)	Determines whether a byte array being passed to defineClass is a class found in the shared class cache, or a class found locally.
void	setSharingFilter(SharedClassFilter filter)	Sets the SharedClassFilter for a helper instance.

Methods declared in class com.ibm.oti.shared.SharedAbstractHelper

getClassLoader

Methods declared in class java.lang.Object

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

Methods declared in interface com.ibm.oti.shared.SharedHelper

getClassLoader

Constructor Details

SharedClassAbstractHelper

public SharedClassAbstractHelper()

Constructs a new instance of this class.

Method Details

isSharedClassCookie

public boolean isSharedClassCookie(byte[] classBytes)

Determines whether a byte array being passed to defineClass is a class found in the shared class cache, or a class found locally.

Parameters:

classBytes - a potential shared class cookie

Returns:

true if bytes are a cookie

setSharingFilter

public void setSharingFilter(SharedClassFilter filter)

Sets the SharedClassFilter for a helper instance.

Supplying null removes any filter that is currently associated with the helper instance.

Specified by:

setSharingFilter in interface SharedClassHelper

Parameters:

filter - the filter to use when finding and storing classes

getSharingFilter

public SharedClassFilter getSharingFilter()

Returns the SharedClassFilter associated with this helper.

Specified by:

getSharingFilter in interface SharedClassHelper

Returns:

the filter instance, or null if none is associated