org.apache.drill.exec.physical.rowSet

Class TestMapAccessors

java.lang.Object

DrillTest

org.apache.drill.test.SubOperatorTest

org.apache.drill.exec.physical.rowSet.TestMapAccessors

public class TestMapAccessors
extends SubOperatorTest

Test map support in the column readers and writers.

The tests here are a simplified form of those in TestResultSetLoaderMaps -- the RowSet mechanism requires a fixed schema, which makes this mechanism far simpler.

Field Summary

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

dirTestWatcher, fixture

Constructor Summary

Constructors

Constructor and Description
TestMapAccessors()

Method Summary

Modifier and Type	Method and Description
void	testBasicRepeatedMap()
void	testBasics()
void	testDoubleNestedArray() Test a doubly-nested array of maps.
void	testDrill6809() Test that the schema inference handles repeated map vectors.
void	testNestedArray()
void	testNestedMapsRequired() Create nested maps.

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

TestMapAccessors

public TestMapAccessors()

Method Detail

testBasics

public void testBasics()

testNestedMapsRequired

public void testNestedMapsRequired()

Create nested maps. Use required, variable-width columns since those require the most processing and are most likely to fail if anything is out of place.

testBasicRepeatedMap

public void testBasicRepeatedMap()

testNestedArray

public void testNestedArray()

testDoubleNestedArray

public void testDoubleNestedArray()

Test a doubly-nested array of maps.

testDrill6809

public void testDrill6809()
                   throws Exception

Test that the schema inference handles repeated map vectors.

It turns out that when some operators create a map array, it adds the $offset$ vector to the list of children for the map's MaterializedField. But, the RowSet utilities do not. This test verifies that both forms work.

Throws:

Exception