org.apache.drill.exec.physical.impl.scan

Class TestScanOperExecOuputSchema

java.lang.Object

DrillTest

org.apache.drill.test.SubOperatorTest

org.apache.drill.exec.physical.impl.scan.BaseScanOperatorExecTest

org.apache.drill.exec.physical.impl.scan.TestScanOperExecOuputSchema

public class TestScanOperExecOuputSchema
extends BaseScanOperatorExecTest

Test the addition of an output schema to a reader. The output schema defines the schema to be output from the scan operator, and forces conversions between reader and output data types.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.drill.exec.physical.impl.scan.BaseScanOperatorExecTest

BaseScanOperatorExecTest.BaseMockBatchReader, BaseScanOperatorExecTest.BaseScanFixtureBuilder, BaseScanOperatorExecTest.MockEarlySchemaReader

Field Summary

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

dirTestWatcher, fixture

Constructor Summary

Constructors

Constructor and Description
TestScanOperExecOuputSchema()

Method Summary

Modifier and Type	Method and Description
void	testProvidedSchema() Test an output schema.
void	testProvidedSchemaWithWildcard() Test non-strict specified schema, with a wildcard, with extra reader columns.
void	testStrictProvidedSchemaWithWildcard()
void	testStrictProvidedSchemaWithWildcardAndSpecialCols()

Methods inherited from class org.apache.drill.exec.physical.impl.scan.BaseScanOperatorExecTest

expectedSchema, makeExpected, makeExpected, simpleBuilder, simpleFixture, verifyBatch

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

TestScanOperExecOuputSchema

public TestScanOperExecOuputSchema()

Method Detail

testProvidedSchema

public void testProvidedSchema()

Test an output schema.

• Column a has an input type of VARCHAR, and output type of INT, and the framework will insert an implicit conversion.
• Column b has an output type of BIGINT, is projected, but is not provided by the reader. It will use the default value of 20L.
• Column c is not in the output schema, is not provided by the reader, but is projected, so it will use the default null type of VARCHAR, with a null value.

testProvidedSchemaWithWildcard

public void testProvidedSchemaWithWildcard()

Test non-strict specified schema, with a wildcard, with extra reader columns. Reader columns are included in output.

testStrictProvidedSchemaWithWildcard

public void testStrictProvidedSchemaWithWildcard()

testStrictProvidedSchemaWithWildcardAndSpecialCols

public void testStrictProvidedSchemaWithWildcardAndSpecialCols()