thomasrebele commented on code in PR #6105: URL: https://github.com/apache/hive/pull/6105#discussion_r2387377630
########## common/src/java/org/apache/hadoop/hive/common/io/TransformingFetchConverter.java: ########## @@ -0,0 +1,75 @@ +/* + * 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.hive.common.io; + +import java.io.OutputStream; +import java.io.PrintStream; +import java.io.UnsupportedEncodingException; +import java.util.function.UnaryOperator; + +/** + * Applies a function to the processed lines, before passing it to the wrapped output stream. + */ +public class TransformingFetchConverter extends SessionStream implements FetchListener { + + private final UnaryOperator<String> transformation; + + private final PrintStream inner; + private final boolean innerIsFetchConverter; + + public TransformingFetchConverter(OutputStream out, boolean autoFlush, String encoding, UnaryOperator<String> transformation) + throws UnsupportedEncodingException { + super(out, autoFlush, encoding); + inner = out instanceof PrintStream ? (PrintStream) out : new PrintStream(out); + innerIsFetchConverter = out instanceof FetchListener; + this.transformation = transformation; + } + + public void println(String str) { + inner.println(transformation.apply(str)); + } + + @Override + public void foundQuery(boolean queryfound) { + if(innerIsFetchConverter) { + ((FetchListener)inner).foundQuery(queryfound); + } + } + + @Override + public void fetchStarted() { + if(innerIsFetchConverter) { + ((FetchListener)inner).fetchStarted(); + } + } + + @Override + public void flush() { + super.flush(); + } Review Comment: I'm going to remove this leftover from a refactoring in the next round. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
