org.apache.drill.exec.physical.rowSet

Class TestRowSet

java.lang.Object

DrillTest

org.apache.drill.test.SubOperatorTest

org.apache.drill.exec.physical.rowSet.TestRowSet

public class TestRowSet
extends SubOperatorTest

Test row sets. Since row sets are a thin wrapper around vectors, readers and writers, this is also a test of those constructs.

Tests basic protocol of the writers:

 row : tuple
 tuple : column *
 column : scalar obj | array obj | tuple obj | variant obj
 scalar obj : scalar
 array obj : array
 array : index --> column
 element : column
 tuple obj : tuple
 tuple : name --> column (also index --> column)
 variant obj : variant
 variant : type --> column

A list is an array of variants. Variants are tested elsewhere.

Field Summary

Fields inherited from class org.apache.drill.test.SubOperatorTest

dirTestWatcher, fixture

Constructor Summary

Constructors

Constructor and Description
TestRowSet()

Method Summary

Modifier and Type	Method and Description
void	example() The code below is not a test.
String	print(Object obj)
void	testBufferBounds() Test filling a row set up to the maximum vector size.
void	testDictStructure()
void	testDictStructureMapValue()
void	testMapStructure() Test a simple map structure at the top level of a row.
void	testRepeatedDictStructure()
void	testRepeatedMapStructure()
void	testRowBounds() Test filling a row set up to the maximum number of rows.
void	testScalarArrayStructure() Test a record with a top level array.
void	testScalarStructure() Test the simplest constructs: a row with top-level scalar columns.
void	testTopFixedWidthArray() Test an array of ints (as an example fixed-width type) at the top level of a schema.

Methods inherited from class org.apache.drill.test.SubOperatorTest

classSetup, classTeardown

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TestRowSet

public TestRowSet()

Method Detail

testScalarStructure

public void testScalarStructure()

Test the simplest constructs: a row with top-level scalar columns.

The focus here is the structure of the readers and writers, along with the row set loader and verifier that use those constructs. That is, while this test uses the int vector, this test is not focused on that vector.

testScalarArrayStructure

public void testScalarArrayStructure()

Test a record with a top level array. The focus here is on the scalar array structure.

Throws:

VectorOverflowException - should never occur

testMapStructure

public void testMapStructure()

Test a simple map structure at the top level of a row.

Throws:

VectorOverflowException - should never occur

testRepeatedMapStructure

public void testRepeatedMapStructure()

testDictStructure

public void testDictStructure()

testDictStructureMapValue

public void testDictStructureMapValue()

testRepeatedDictStructure

public void testRepeatedDictStructure()

testTopFixedWidthArray

public void testTopFixedWidthArray()

Test an array of ints (as an example fixed-width type) at the top level of a schema.

testRowBounds

public void testRowBounds()

Test filling a row set up to the maximum number of rows. Values are small enough to prevent filling to the maximum buffer size.

testBufferBounds

public void testBufferBounds()

Test filling a row set up to the maximum vector size. Values in the first column are small enough to prevent filling to the maximum buffer size, but values in the second column will reach maximum buffer size before maximum row size. The result should be the number of rows that fit, with the partial last row not counting. (A complete application would reload the partial row into a new row set.)

example

public void example()

The code below is not a test. Rather, it is a simple example of how to write a batch of data using writers, then read it using readers.

print

public String print(Object obj)