Package org.apache.drill.exec.physical.resultSet.model.hyper

Class HyperSchemaInference

java.lang.Object

org.apache.drill.exec.physical.resultSet.model.hyper.HyperSchemaInference

public class HyperSchemaInference
extends Object

Infer the schema for a hyperbatch. Scans each vector of each batch to ensure that the vectors are compatible. (They should be.)

This code should be extended to handle merges. For example, batch 1 may have a union with type INT. Batch 2 might have a union with VARCHAR. The combined schema should have (INT, VARCHAR). The same is true with (non-repeated) lists. There may be other cases.

Constructor Summary

Constructors

Constructor	Description
HyperSchemaInference()

Method Summary

Modifier and Type	Method	Description
TupleMetadata	infer(VectorContainer container)

Methods inherited from class java.lang.Object

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

Constructor Details

HyperSchemaInference

public HyperSchemaInference()

Method Details

infer

public TupleMetadata infer(VectorContainer container)
                    throws SchemaChangeException

Throws:

SchemaChangeException