org.elasticsearch.index.store

Class DirectoryUtils

java.lang.Object

org.elasticsearch.index.store.DirectoryUtils

public final class DirectoryUtils
extends Object

Utils for working with Directory classes.

Method Summary

Modifier and Type	Method and Description
static <T extends org.apache.lucene.store.Directory> T	getLeaf(org.apache.lucene.store.Directory dir, Class<T> targetClass) Tries to extract the leaf of the Directory if the directory is a FilterDirectory and cast it to the given target class or returns null if the leaf is not assignable to the target class.
static <T extends org.apache.lucene.store.Directory> T	getLeaf(org.apache.lucene.store.Directory dir, Class<T> targetClass, T defaultValue) Tries to extract the leaf of the Directory if the directory is a FilterDirectory and cast it to the given target class or returns the given default value, if the leaf is not assignable to the target class.

Methods inherited from class java.lang.Object

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

Method Detail

getLeaf

public static <T extends org.apache.lucene.store.Directory> T getLeaf(org.apache.lucene.store.Directory dir,
                                                                      Class<T> targetClass)

Tries to extract the leaf of the Directory if the directory is a FilterDirectory and cast it to the given target class or returns null if the leaf is not assignable to the target class. If the given Directory is a concrete directory it will treated as a leaf and the above applies.

getLeaf

public static <T extends org.apache.lucene.store.Directory> T getLeaf(org.apache.lucene.store.Directory dir,
                                                                      Class<T> targetClass,
                                                                      T defaultValue)

Tries to extract the leaf of the Directory if the directory is a FilterDirectory and cast it to the given target class or returns the given default value, if the leaf is not assignable to the target class. If the given Directory is a concrete directory it will treated as a leaf and the above applies.