org.apache.lucene.util
Class SimpleStringInterner

java.lang.Object
  org.apache.lucene.util.StringInterner
      org.apache.lucene.util.SimpleStringInterner

public class SimpleStringInterner
extends StringInterner

Simple lockless and memory barrier free String intern cache that is guaranteed to return the same String instance as String.intern() does.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Constructor Summary

SimpleStringInterner(int tableSize, int maxChainLength)

Method Summary

String

intern(String s) Returns a single object instance for each equal string.

Methods inherited from class org.apache.lucene.util.StringInterner

intern

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleStringInterner

public SimpleStringInterner(int tableSize,
                            int maxChainLength)

Parameters:

tableSize - Size of the hash table, should be a power of two.

maxChainLength - Maximum length of each bucket, after which the oldest item inserted is dropped.

Method Detail

intern

public String intern(String s)

Description copied from class: StringInterner

Returns a single object instance for each equal string.

Overrides:

intern in class StringInterner