io.hetu.core.plugin.datacenter.pagesource

Class DataCenterPageSource

java.lang.Object

io.hetu.core.plugin.datacenter.pagesource.DataCenterPageSource

All Implemented Interfaces:

ConnectorPageSource, Closeable, AutoCloseable

public class DataCenterPageSource
extends Object
implements ConnectorPageSource

Data center page source.

Since:

2020-02-11

Field Summary

Fields inherited from interface io.prestosql.spi.connector.ConnectorPageSource

NOT_BLOCKED

Constructor Summary

Constructors

Constructor and Description
DataCenterPageSource(okhttp3.OkHttpClient httpClient, DataCenterClientSession clientSession, String sql, String queryId, List<ColumnHandle> columns) Constructor of data center page source.
DataCenterPageSource(okhttp3.OkHttpClient httpClient, DataCenterClientSession clientSession, String sql, String queryId, List<ColumnHandle> columns, Optional<DynamicFilterSupplier> dynamicFilterSupplier)

Method Summary

Modifier and Type	Method and Description
void	close()
long	getCompletedBytes()
Page	getNextPage()
long	getReadTimeNanos()
long	getSystemMemoryUsage()
boolean	isFinished()

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.prestosql.spi.connector.ConnectorPageSource

isBlocked, needMergingForPages

Constructor Detail

DataCenterPageSource

public DataCenterPageSource(okhttp3.OkHttpClient httpClient,
                            DataCenterClientSession clientSession,
                            String sql,
                            String queryId,
                            List<ColumnHandle> columns)

Constructor of data center page source.

Parameters:

httpClient - http client.

clientSession - session client.

sql - sql statement.

queryId - id of query that user issued.

columns - columns of sql.

DataCenterPageSource

public DataCenterPageSource(okhttp3.OkHttpClient httpClient,
                            DataCenterClientSession clientSession,
                            String sql,
                            String queryId,
                            List<ColumnHandle> columns,
                            Optional<DynamicFilterSupplier> dynamicFilterSupplier)

Method Detail

getCompletedBytes

public long getCompletedBytes()

Specified by:

getCompletedBytes in interface ConnectorPageSource

getReadTimeNanos

public long getReadTimeNanos()

Specified by:

getReadTimeNanos in interface ConnectorPageSource

isFinished

public boolean isFinished()

Specified by:

isFinished in interface ConnectorPageSource

getNextPage

public Page getNextPage()

Specified by:

getNextPage in interface ConnectorPageSource

getSystemMemoryUsage

public long getSystemMemoryUsage()

Specified by:

getSystemMemoryUsage in interface ConnectorPageSource

close

public void close()
           throws IOException

Specified by:

close in interface ConnectorPageSource

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException