FilesystemResourceLoader (Lucene 9.0.0 common API)

java.lang.Object
- org.apache.lucene.analysis.util.FilesystemResourceLoader

All Implemented Interfaces:

ResourceLoader
```
public final class FilesystemResourceLoader
extends Object
implements ResourceLoader
```
Simple ResourceLoader that opens resource files from the local file system, optionally resolving against a base directory.
This loader wraps a delegate ResourceLoader that is used to resolve all files, the current base directory does not contain. newInstance(java.lang.String, java.lang.Class<T>) is always resolved against the delegate, as a ClassLoader is needed.
You can chain several FilesystemResourceLoaders to allow lookup of files in more than one base directory.

Constructor Summary

Constructors
Constructor	Description
`FilesystemResourceLoader(Path baseDirectory, ClassLoader delegate)`	Creates a resource loader that resolves resources against the given base directory (may be `null` to refer to CWD).
`FilesystemResourceLoader(Path baseDirectory, ResourceLoader delegate)`	Creates a resource loader that resolves resources against the given base directory (may be `null` to refer to CWD).

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`<T> Class<? extends T>`	`findClass(String cname, Class<T> expectedType)`
`<T> T`	`newInstance(String cname, Class<T> expectedType)`
`InputStream`	`openResource(String resource)`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- FilesystemResourceLoader
```
public FilesystemResourceLoader(Path baseDirectory,
                                ClassLoader delegate)
```
  Creates a resource loader that resolves resources against the given base directory (may be null to refer to CWD). Files not found in file system and class lookups are delegated to context classloader.
- FilesystemResourceLoader
```
public FilesystemResourceLoader(Path baseDirectory,
                                ResourceLoader delegate)
```
  Creates a resource loader that resolves resources against the given base directory (may be null to refer to CWD). Files not found in file system and class lookups are delegated to the given delegate ResourceLoader.

Method Detail

openResource

public InputStream openResource(String resource)
                         throws IOException

Specified by:: openResource in interface ResourceLoader
Throws:: IOException

newInstance

public <T> T newInstance(String cname,
                         Class<T> expectedType)

Specified by:: newInstance in interface ResourceLoader

findClass

public <T> Class<? extends T> findClass(String cname,
                                        Class<T> expectedType)

Specified by:: findClass in interface ResourceLoader