| /** |
| * 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 com.cloudera.sqoop; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| |
| import org.apache.commons.cli.ParseException; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.IOUtils; |
| import org.apache.hadoop.io.SequenceFile; |
| import org.apache.hadoop.util.ReflectionUtils; |
| |
| import com.cloudera.sqoop.SqoopOptions.InvalidOptionsException; |
| import com.cloudera.sqoop.orm.CompilationManager; |
| import com.cloudera.sqoop.testutil.CommonArgs; |
| import com.cloudera.sqoop.testutil.HsqldbTestServer; |
| import com.cloudera.sqoop.testutil.ImportJobTestCase; |
| import com.cloudera.sqoop.testutil.SeqFileReader; |
| import com.cloudera.sqoop.tool.ImportTool; |
| import com.cloudera.sqoop.util.ClassLoaderStack; |
| |
| /** |
| * Test that --where works in Sqoop. |
| * Methods essentially copied out of the other Test* classes. |
| * TODO(kevin or aaron): Factor out these common test methods |
| * so that every new Test* class doesn't need to copy the code. |
| */ |
| public class TestWhere extends ImportJobTestCase { |
| |
| /** |
| * Create the argv to pass to Sqoop. |
| * @return the argv as an array of strings. |
| */ |
| protected String [] getArgv(boolean includeHadoopFlags, String [] colNames, |
| String whereClause) { |
| String columnsString = ""; |
| for (String col : colNames) { |
| columnsString += col + ","; |
| } |
| |
| ArrayList<String> args = new ArrayList<String>(); |
| |
| if (includeHadoopFlags) { |
| CommonArgs.addHadoopFlags(args); |
| } |
| |
| args.add("--table"); |
| args.add(HsqldbTestServer.getTableName()); |
| args.add("--columns"); |
| args.add(columnsString); |
| args.add("--where"); |
| args.add(whereClause); |
| args.add("--split-by"); |
| args.add("INTFIELD1"); |
| args.add("--warehouse-dir"); |
| args.add(getWarehouseDir()); |
| args.add("--connect"); |
| args.add(HsqldbTestServer.getUrl()); |
| args.add("--as-sequencefile"); |
| args.add("--num-mappers"); |
| args.add("1"); |
| |
| return args.toArray(new String[0]); |
| } |
| |
| // this test just uses the two int table. |
| protected String getTableName() { |
| return HsqldbTestServer.getTableName(); |
| } |
| |
| |
| /** |
| * Given a comma-delimited list of integers, grab and parse the first int. |
| * @param str a comma-delimited list of values, the first of which is an int. |
| * @return the first field in the string, cast to int |
| */ |
| private int getFirstInt(String str) { |
| String [] parts = str.split(","); |
| return Integer.parseInt(parts[0]); |
| } |
| |
| public void runWhereTest(String whereClause, String firstValStr, |
| int numExpectedResults, int expectedSum) throws IOException { |
| |
| String [] columns = HsqldbTestServer.getFieldNames(); |
| ClassLoader prevClassLoader = null; |
| SequenceFile.Reader reader = null; |
| |
| String [] argv = getArgv(true, columns, whereClause); |
| runImport(argv); |
| try { |
| SqoopOptions opts = new ImportTool().parseArguments( |
| getArgv(false, columns, whereClause), |
| null, null, true); |
| |
| CompilationManager compileMgr = new CompilationManager(opts); |
| String jarFileName = compileMgr.getJarFilename(); |
| |
| prevClassLoader = ClassLoaderStack.addJarFile(jarFileName, |
| getTableName()); |
| |
| reader = SeqFileReader.getSeqFileReader(getDataFilePath().toString()); |
| |
| // here we can actually instantiate (k, v) pairs. |
| Configuration conf = new Configuration(); |
| Object key = ReflectionUtils.newInstance(reader.getKeyClass(), conf); |
| Object val = ReflectionUtils.newInstance(reader.getValueClass(), conf); |
| |
| if (reader.next(key) == null) { |
| fail("Empty SequenceFile during import"); |
| } |
| |
| // make sure that the value we think should be at the top, is. |
| reader.getCurrentValue(val); |
| assertEquals("Invalid ordering within sorted SeqFile", firstValStr, |
| val.toString()); |
| |
| // We know that these values are two ints separated by a ',' character. |
| // Since this is all dynamic, though, we don't want to actually link |
| // against the class and use its methods. So we just parse this back |
| // into int fields manually. Sum them up and ensure that we get the |
| // expected total for the first column, to verify that we got all the |
| // results from the db into the file. |
| int curSum = getFirstInt(val.toString()); |
| int totalResults = 1; |
| |
| // now sum up everything else in the file. |
| while (reader.next(key) != null) { |
| reader.getCurrentValue(val); |
| curSum += getFirstInt(val.toString()); |
| totalResults++; |
| } |
| |
| assertEquals("Total sum of first db column mismatch", expectedSum, |
| curSum); |
| assertEquals("Incorrect number of results for query", numExpectedResults, |
| totalResults); |
| } catch (InvalidOptionsException ioe) { |
| fail(ioe.toString()); |
| } catch (ParseException pe) { |
| fail(pe.toString()); |
| } finally { |
| IOUtils.closeStream(reader); |
| |
| if (null != prevClassLoader) { |
| ClassLoaderStack.setCurrentClassLoader(prevClassLoader); |
| } |
| } |
| } |
| |
| public void testSingleClauseWhere() throws IOException { |
| String whereClause = "INTFIELD2 > 4"; |
| runWhereTest(whereClause, "1,8\n", 2, 4); |
| } |
| |
| public void testMultiClauseWhere() throws IOException { |
| String whereClause = "INTFIELD1 > 4 AND INTFIELD2 < 3"; |
| runWhereTest(whereClause, "7,2\n", 1, 7); |
| } |
| } |