+++ /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.
- */
-
-import java.io.ObjectStreamException;
-import java.io.Serializable;
-import java.io.StreamCorruptedException;
-import java.util.HashMap;
-import java.util.Map;
-
-/**
- * A serializable Enum class.
- * @deprecated Use Java 5 enum, will be removed in a later Lucene 3.x release.
- * @lucene.internal
- */
-@Deprecated
-@SuppressWarnings("serial")
-public abstract class Parameter implements Serializable {
- static Map<String,Parameter> allParameters = new HashMap<String,Parameter>();
-
- private String name;
-
- protected Parameter(String name) {
- // typesafe enum pattern, no public constructor
- this.name = name;
- String key = makeKey(name);
-
- if(allParameters.containsKey(key))
- throw new IllegalArgumentException("Parameter name " + key + " already used!");
-
- allParameters.put(key, this);
- }
-
- private String makeKey(String name){
- return getClass() + " " + name;
- }
-
- @Override
- public String toString() {
- return name;
- }
-
- /**
- * Resolves the deserialized instance to the local reference for accurate
- * equals() and == comparisons.
- *
- * @return a reference to Parameter as resolved in the local VM
- * @throws ObjectStreamException
- */
- protected Object readResolve() throws ObjectStreamException {
- Object par = allParameters.get(makeKey(name));
-
- if(par == null)
- throw new StreamCorruptedException("Unknown parameter value: " + name);
-
- return par;
- }
-
- }