org.apache.drill.exec.work.metadata

Class MetadataProvider

java.lang.Object

org.apache.drill.exec.work.metadata.MetadataProvider

public class MetadataProvider
extends Object

Contains worker Runnable classes for providing the metadata and related helper methods.

Constructor Summary

Constructors

Constructor and Description
MetadataProvider()

Method Summary

Modifier and Type	Method and Description
static Runnable	catalogs(UserSession session, DrillbitContext dContext, UserProtos.GetCatalogsReq req, ResponseSender responseSender)
static Runnable	columns(UserSession session, DrillbitContext dContext, UserProtos.GetColumnsReq req, ResponseSender responseSender)
static Runnable	schemas(UserSession session, DrillbitContext dContext, UserProtos.GetSchemasReq req, ResponseSender responseSender)
static Runnable	tables(UserSession session, DrillbitContext dContext, UserProtos.GetTablesReq req, ResponseSender responseSender)

Methods inherited from class java.lang.Object

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

Constructor Detail

MetadataProvider

public MetadataProvider()

Method Detail

catalogs

public static Runnable catalogs(UserSession session,
                                DrillbitContext dContext,
                                UserProtos.GetCatalogsReq req,
                                ResponseSender responseSender)

Returns:

Runnable that fetches the catalog metadata for given UserProtos.GetCatalogsReq and sends response at the end.

schemas

public static Runnable schemas(UserSession session,
                               DrillbitContext dContext,
                               UserProtos.GetSchemasReq req,
                               ResponseSender responseSender)

Returns:

Runnable that fetches the schema metadata for given UserProtos.GetSchemasReq and sends response at the end.

tables

public static Runnable tables(UserSession session,
                              DrillbitContext dContext,
                              UserProtos.GetTablesReq req,
                              ResponseSender responseSender)

Returns:

Runnable that fetches the table metadata for given UserProtos.GetTablesReq and sends response at the end.

columns

public static Runnable columns(UserSession session,
                               DrillbitContext dContext,
                               UserProtos.GetColumnsReq req,
                               ResponseSender responseSender)

Returns:

Runnable that fetches the column metadata for given UserProtos.GetColumnsReq and sends response at the end.