CarbonInputFormat_FT.java

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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
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 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.carbondata.hadoop.ft;

import java.util.List;

import org.apache.carbondata.core.metadata.datatype.DataTypes;
import org.apache.carbondata.hadoop.CarbonInputFormat;
import org.apache.carbondata.core.scan.expression.ColumnExpression;
import org.apache.carbondata.core.scan.expression.Expression;
import org.apache.carbondata.core.scan.expression.LiteralExpression;
import org.apache.carbondata.core.scan.expression.conditional.EqualToExpression;

import junit.framework.TestCase;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

public class CarbonInputFormat_FT extends TestCase {

  @Before public void setUp() throws Exception {
    //create a table with column c1 string type
    //Insert data with column c1 has "a", "b", "c"
  }

  @Test public void testGetSplits() throws Exception {
    CarbonInputFormat carbonInputFormat = new CarbonInputFormat();
    JobConf jobConf = new JobConf(new Configuration());
    Job job = Job.getInstance(jobConf);
    FileInputFormat.addInputPath(job, new Path("/opt/carbonstore/db/table1"));
    job.getConfiguration().set(CarbonInputFormat.INPUT_SEGMENT_NUMBERS, "1,2");
    List splits = carbonInputFormat.getSplits(job);

    Assert.assertTrue(splits != null);
    Assert.assertTrue(!splits.isEmpty());
  }

  @Test public void testGetFilteredSplits() throws Exception {
    CarbonInputFormat carbonInputFormat = new CarbonInputFormat();
    JobConf jobConf = new JobConf(new Configuration());
    Job job = Job.getInstance(jobConf);
    FileInputFormat.addInputPath(job, new Path("/opt/carbonstore/db/table1"));
    job.getConfiguration().set(CarbonInputFormat.INPUT_SEGMENT_NUMBERS, "1,2");
    Expression expression = new EqualToExpression(new ColumnExpression("c1", DataTypes.STRING),
        new LiteralExpression("a", DataTypes.STRING));
    CarbonInputFormat.setFilterPredicates(job.getConfiguration(), expression);
    List splits = carbonInputFormat.getSplits(job);

    Assert.assertTrue(splits != null);
    Assert.assertTrue(!splits.isEmpty());
  }
}