org.apache.drill.exec.physical.impl.validate

Class BatchValidator

java.lang.Object

org.apache.drill.exec.physical.impl.validate.BatchValidator

public class BatchValidator
extends Object

Validate a batch of value vectors. It is not possible to validate the data, but we can validate the structure, especially offset vectors. Only handles single (non-hyper) vectors at present. Current form is self-contained. Better checks can be done by moving checks inside vectors or by exposing more metadata from vectors.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_ERRORS

Constructor Summary

Constructors

Constructor and Description
BatchValidator(VectorAccessible batch)
BatchValidator(VectorAccessible batch, boolean captureErrors)

Method Summary

Methods

Modifier and Type	Method and Description
List<String>	errors() Obtain the list of errors.
void	validate()

Methods inherited from class java.lang.Object

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

Field Detail

MAX_ERRORS

public static final int MAX_ERRORS

See Also:

Constant Field Values

Constructor Detail

BatchValidator

public BatchValidator(VectorAccessible batch)

BatchValidator

public BatchValidator(VectorAccessible batch,
              boolean captureErrors)

Method Detail

validate

public void validate()

errors

public List<String> errors()

Obtain the list of errors. For use in unit-testing this class.

Returns:

the list of errors found, or null if error capture was not enabled