co.cask.cdap.data2.datafabric.dataset.type

Class ConstantClassLoaderProvider

java.lang.Object

co.cask.cdap.data2.datafabric.dataset.type.ConstantClassLoaderProvider

All Implemented Interfaces:

DatasetClassLoaderProvider, Closeable, AutoCloseable

public class ConstantClassLoaderProvider
extends Object
implements DatasetClassLoaderProvider

Simply returns the same ClassLoader for every dataset module. The assumption is that the classloader has access to any dataset module that may be created. This is true for a ProgramClassLoader for example. Closing the given classloader is left to the caller. It will not be closed when this class is closed.

Constructor Summary

Constructors

Constructor and Description
ConstantClassLoaderProvider()
ConstantClassLoaderProvider(ClassLoader classLoader)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
ClassLoader	get(DatasetModuleMeta moduleMeta, ClassLoader parentClassLoader) Get the classloader for a specific dataset module.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantClassLoaderProvider

public ConstantClassLoaderProvider()

ConstantClassLoaderProvider

public ConstantClassLoaderProvider(@Nullable
                           ClassLoader classLoader)

Method Detail

get

public ClassLoader get(DatasetModuleMeta moduleMeta,
              ClassLoader parentClassLoader)
                throws IOException

Description copied from interface: DatasetClassLoaderProvider

Get the classloader for a specific dataset module.

Specified by:

get in interface DatasetClassLoaderProvider

Parameters:

moduleMeta - the metadata for the dataset module to get a classloader for

parentClassLoader - the class loader to use as the parent

Returns:

classloader for the given dataset module

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException