Stringifier.java
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上传日期:2018-01-08
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- /**
- * 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.
- */
- package org.apache.hadoop.io;
- import java.io.IOException;
- /**
- * Stringifier interface offers two methods to convert an object
- * to a string representation and restore the object given its
- * string representation.
- * @param <T> the class of the objects to stringify
- */
- public interface Stringifier<T> extends java.io.Closeable {
- /**
- * Converts the object to a string representation
- * @param obj the object to convert
- * @return the string representation of the object
- * @throws IOException if the object cannot be converted
- */
- public String toString(T obj) throws IOException;
-
- /**
- * Restores the object from its string representation.
- * @param str the string representation of the object
- * @return restored object
- * @throws IOException if the object cannot be restored
- */
- public T fromString(String str) throws IOException;
-
-
- /**
- * Closes this object.
- * @throws IOException if an I/O error occurs
- * */
- public void close() throws IOException;
-
- }