Package org.apache.drill.exec.store.drill.plugin

Class DrillScanSpec

java.lang.Object

org.apache.drill.exec.store.drill.plugin.DrillScanSpec

All Implemented Interfaces:

DrillTableSelection

public class DrillScanSpec
extends Object
implements DrillTableSelection

Constructor Summary

Constructors

Constructor	Description
DrillScanSpec(String query)
DrillScanSpec(List<String> schemaPath, String collectionName)

Method Summary

Modifier and Type	Method	Description
String	digest()	The digest of the selection represented by the implementation.
String	getCollectionName()
String	getQuery()
List<String>	getSchemaPath()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

DrillScanSpec

public DrillScanSpec(List<String> schemaPath,
 String collectionName)

DrillScanSpec

public DrillScanSpec(String query)

Method Details

getSchemaPath

public List<String> getSchemaPath()

getCollectionName

public String getCollectionName()

getQuery

public String getQuery()

toString

public String toString()

Overrides:

toString in class Object

digest

public String digest()

Description copied from interface: DrillTableSelection

The digest of the selection represented by the implementation. The selections that accompany Tables can modify the contained dataset, e.g. a file selection can restrict to a subset of the available data and a format selection can include options that affect the behaviour of the underlying reader. Two scans will end up being considered identical during logical planning if their digests are the same so selection implementations should override this method so that exactly those scans that really are identical (in terms of the data they produce) have matching digests.

Specified by:

digest in interface DrillTableSelection

Returns:

this selection's digest, normally a string built from its properties.