org.python.core

Class JavaImportHelper

java.lang.Object

org.python.core.JavaImportHelper

public class JavaImportHelper
extends java.lang.Object

Helper class handling the VM specific java package detection.

Constructor Summary

Constructors

Constructor and Description
JavaImportHelper()

Method Summary

Modifier and Type	Method and Description
protected static boolean	isLoadedPackage(java.lang.String packageName) Check if a java package is already known to the VM.
protected static boolean	tryAddPackage(java.lang.String packageName, PyObject fromlist) Try to add the java package.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaImportHelper

public JavaImportHelper()

Method Detail

tryAddPackage

protected static boolean tryAddPackage(java.lang.String packageName,
                                       PyObject fromlist)

Try to add the java package.

This is handy in cases where the package scan cannot run, or when the initial classpath does not contain all .jar files (such as in J2EE containers).

There is some self-healing in the sense that a correct, explicit import of a java class will succeed even if sys.modules already contains a Py.None entry for the corresponding java package.

Parameters:

packageName - The dotted name of the java package

fromlist - A tuple with the from names to import. Can be null or empty.

Returns:

true if a java package was doubtlessly identified and added, false otherwise.

isLoadedPackage

protected static boolean isLoadedPackage(java.lang.String packageName)

Check if a java package is already known to the VM.

May return false even if the given package name is a valid java package !

Parameters:

packageName -

Returns:

true if the package with the given name is already loaded by the VM, false otherwise.