--- /dev/null
+package org.apache.lucene.util;
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Subclasses of StringInterner are required to
+ * return the same single String object for all equal strings.
+ * Depending on the implementation, this may not be
+ * the same object returned as String.intern().
+ *
+ * This StringInterner base class simply delegates to String.intern().
+ */
+public class StringInterner {
+ /** Returns a single object instance for each equal string. */
+ public String intern(String s) {
+ return s.intern();
+ }
+
+ /** Returns a single object instance for each equal string. */
+ public String intern(char[] arr, int offset, int len) {
+ return intern(new String(arr, offset, len));
+ }
+}