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This class is no longer used and was deprecated in 3.0 (replaced by java.lang.Enum) 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1029506 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Uwe Schindler 2010-10-31 22:38:17 +00:00
parent 7e85ff6655
commit f4a564065b
1 changed files with 0 additions and 74 deletions
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74
lucene/src/java/org/apache/lucene/util/Parameter.java
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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;
}
}