TestStreamXmlRecordReader.java
上传用户:quxuerui
上传日期:2018-01-08
资源大小:41811k
文件大小:3k
源码类别:
网格计算
开发平台:
Java
- /**
- * 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.streaming;
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.IOException;
- /**
- * This class tests StreamXmlRecordReader
- * The test creates an XML file, uses StreamXmlRecordReader and compares
- * the expected output against the generated output
- */
- public class TestStreamXmlRecordReader extends TestStreaming
- {
- private StreamJob job;
- public TestStreamXmlRecordReader() throws IOException {
- INPUT_FILE = new File("input.xml");
- input = "<xmltag>tnroses.are.redtnviolets.are.bluetnbunnies.are.pinktn</xmltag>tn";
- }
- protected void createInput() throws IOException
- {
- FileOutputStream out = new FileOutputStream(INPUT_FILE.getAbsoluteFile());
- String dummyXmlStartTag = "<PATTERN>n";
- String dummyXmlEndTag = "</PATTERN>n";
- out.write(dummyXmlStartTag.getBytes("UTF-8"));
- out.write(input.getBytes("UTF-8"));
- out.write(dummyXmlEndTag.getBytes("UTF-8"));
- out.close();
- }
- protected String[] genArgs() {
- return new String[] {
- "-input", INPUT_FILE.getAbsolutePath(),
- "-output", OUTPUT_DIR.getAbsolutePath(),
- "-mapper","cat",
- "-reducer", "NONE",
- "-inputreader", "StreamXmlRecordReader,begin=<xmltag>,end=</xmltag>"
- };
- }
- public void testCommandLine() {
- try {
- try {
- OUTPUT_DIR.getAbsoluteFile().delete();
- } catch (Exception e) {
- }
- createInput();
- job = new StreamJob(genArgs(), false);
- job.go();
- File outFile = new File(OUTPUT_DIR, "part-00000").getAbsoluteFile();
- String output = StreamUtil.slurp(outFile);
- outFile.delete();
- assertEquals(input, output);
- } catch (Exception e) {
- e.printStackTrace();
- } finally {
- INPUT_FILE.delete();
- File outFileCRC = new File(OUTPUT_DIR, ".part-00000.crc").getAbsoluteFile();
- outFileCRC.delete();
- OUTPUT_DIR.getAbsoluteFile().delete();
- }
- }
- public static void main(String[]args) throws Exception
- {
- new TestStreamXmlRecordReader().testCommandLine();
- }
- }