Examples of DoubleColumnInterpreter

com.alibaba.wasp.coprocessor.DoubleColumnInterpreter
a concrete column interpreter implementation. The cell value is a Double value and its promoted data type is also a Double value. For computing aggregation function, this class is used to find the datatype of the cell value. Client is supposed to instantiate it and passed along as a parameter. See TestAggregateProtocol methods for its sample usage. Its methods handle null arguments gracefully.
org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter
a concrete column interpreter implementation. The cell value is a Double value and its promoted data type is also a Double value. For computing aggregation function, this class is used to find the datatype of the cell value. Client is supposed to instantiate it and passed along as a parameter. See TestDoubleColumnInterpreter methods for its sample usage. Its methods handle null arguments gracefully.

Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    scan.setStartRow(ROWS[5]);
    scan.setStopRow(ROWS[1]);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    Double avg = null;
    try {
      avg = aClient.avg(TEST_TABLE, ci, scan);
    } catch (Throwable e) {
    }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
    scan.setFilter(f);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    Double avg = null;
    avg = aClient.avg(TEST_TABLE, ci, scan);
    assertEquals(Double.NaN, avg, 0);
  }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

  public void testStdWithValidRange() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    double std = aClient.std(TEST_TABLE, ci, scan);
    assertEquals(5.766, std, 0.05d);
  }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    scan.setStartRow(ROWS[5]);
    scan.setStopRow(ROWS[15]);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    double std = aClient.std(TEST_TABLE, ci, scan);
    assertEquals(2.87, std, 0.05d);
  }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

  public void testStdWithValidRangeWithNoCQ() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addFamily(TEST_FAMILY);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    double std = aClient.std(TEST_TABLE, ci, scan);
    assertEquals(6.342, std, 0.05d);
  }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

    Scan scan = new Scan();
    scan.addFamily(TEST_FAMILY);
    scan.setStartRow(ROWS[6]);
    scan.setStopRow(ROWS[7]);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    double std = aClient.std(TEST_TABLE, ci, scan);
    System.out.println("std is:" + std);
    assertEquals(0, std, 0.05d);
  }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.setStartRow(ROWS[6]);
    scan.setStopRow(ROWS[17]);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    Double std = null;
    try {
      std = aClient.std(TEST_TABLE, ci, scan);
    } catch (Throwable e) {
    }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

    Scan scan = new Scan();
    scan.addFamily(TEST_FAMILY);
    scan.setStartRow(ROWS[6]);
    scan.setStopRow(ROWS[1]);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    Double std = null;
    try {
      std = aClient.std(TEST_TABLE, ci, scan);
    } catch (Throwable e) {
    }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

    Filter f = new PrefixFilter(Bytes.toBytes("foo:bar"));
    Scan scan = new Scan();
    scan.addFamily(TEST_FAMILY);
    scan.setFilter(f);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    Double std = null;
    std = aClient.std(TEST_TABLE, ci, scan);
    assertEquals(Double.NaN, std, 0);
  }

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Examples of org.apache.hadoop.hbase.client.coprocessor.DoubleColumnInterpreter

  public void testMedianWithValidRange() throws Throwable {
    AggregationClient aClient = new AggregationClient(conf);
    Scan scan = new Scan();
    scan.addColumn(TEST_FAMILY, TEST_QUALIFIER);
    final ColumnInterpreter<Double, Double, EmptyMsg, DoubleMsg, DoubleMsg> ci = 
        new DoubleColumnInterpreter();
    double median = aClient.median(TEST_TABLE, ci, scan);
    assertEquals(8.00, median, 0.00);
  }

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