io.github.classgraph

Class ModuleReaderProxy

java.lang.Object

io.github.classgraph.ModuleReaderProxy

All Implemented Interfaces:

Closeable, AutoCloseable

public class ModuleReaderProxy
extends Object
implements Closeable

A ModuleReader proxy, written using reflection to preserve backwards compatibility with JDK 7 and 8.

Method Summary

Modifier and Type	Method and Description
void	close() Calls ModuleReader#close().
List<String>	list() Get the list of resources accessible to a ModuleReader.
InputStream	open(String path) Use the proxied ModuleReader to open the named resource as an InputStream.
ByteBuffer	read(String path) Use the proxied ModuleReader to open the named resource as a ByteBuffer.
void	release(ByteBuffer byteBuffer) Release a ByteBuffer allocated by calling read(String).

Methods inherited from class java.lang.Object

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

Method Detail

close

public void close()

Calls ModuleReader#close().

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

list

public List<String> list()
                  throws SecurityException

Get the list of resources accessible to a ModuleReader. From the documentation for ModuleReader#list(): "Whether the stream of elements includes names corresponding to directories in the module is module reader specific. In lazy implementations then an IOException may be thrown when using the stream to list the module contents. If this occurs then the IOException will be wrapped in an java.io.UncheckedIOException and thrown from the method that caused the access to be attempted. SecurityException may also be thrown when using the stream to list the module contents and access is denied by the security manager."

Returns:

A list of the paths of resources in the module.

Throws:

SecurityException - If the module cannot be accessed.

open

public InputStream open(String path)
                 throws SecurityException

Use the proxied ModuleReader to open the named resource as an InputStream.

Parameters:

path - The path to the resource to open.

Returns:

An InputStream for the content of the resource.

Throws:

SecurityException - If the module cannot be accessed.

IllegalArgumentException - If the module cannot be accessed.

read

public ByteBuffer read(String path)
                throws SecurityException,
                       OutOfMemoryError

Use the proxied ModuleReader to open the named resource as a ByteBuffer. Call release(ByteBuffer) when you have finished with the ByteBuffer.

Parameters:

path - The path to the resource to open.

Returns:

A ByteBuffer for the content of the resource.

Throws:

SecurityException - If the module cannot be accessed.

OutOfMemoryError - if the resource is larger than 2GB, the maximum capacity of a byte buffer.

release

public void release(ByteBuffer byteBuffer)

Release a ByteBuffer allocated by calling read(String).

Parameters:

byteBuffer - The ByteBuffer to release.