Package org.apache.drill.metastore.mongo.operate

Class MongoRead<T>

java.lang.Object

org.apache.drill.metastore.operate.AbstractRead<T>

org.apache.drill.metastore.mongo.operate.MongoRead<T>

Type Parameters:

T - Metastore component unit type

All Implemented Interfaces:

Read<T>

public class MongoRead<T>
extends AbstractRead<T>

Implementation of Read interface based on AbstractRead parent class. Reads information from Mongo collection based on given filter expression. Supports reading information for specific columns.

Field Summary

Fields inherited from class org.apache.drill.metastore.operate.AbstractRead

columns, filter, metadataTypes

Constructor Summary

Constructors

Constructor	Description
MongoRead(MetadataTypeValidator metadataTypeValidator, MongoMetastoreContext<T> context)

Method Summary

Modifier and Type	Method	Description
protected List<T>	internalExecute()

Methods inherited from class org.apache.drill.metastore.operate.AbstractRead

columns, execute, filter, metadataTypes

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.drill.metastore.operate.Read

columns, metadataType

Constructor Details

MongoRead

public MongoRead(MetadataTypeValidator metadataTypeValidator,
 MongoMetastoreContext<T> context)

Method Details

internalExecute

protected List<T> internalExecute()

Specified by:

internalExecute in class AbstractRead<T>