org.apache.shardingsphere.core.merge.dql.groupby

Class GroupByStreamMergedResult

java.lang.Object

org.apache.shardingsphere.core.merge.dql.common.StreamMergedResult

org.apache.shardingsphere.core.merge.dql.orderby.OrderByStreamMergedResult

org.apache.shardingsphere.core.merge.dql.groupby.GroupByStreamMergedResult

All Implemented Interfaces:

MergedResult

public final class GroupByStreamMergedResult
extends OrderByStreamMergedResult

Stream merged result for group by.

Author:

zhangliang

Constructor Summary

Constructors

Constructor and Description
GroupByStreamMergedResult(Map<String,Integer> labelAndIndexMap, List<QueryResult> queryResults, org.apache.shardingsphere.core.parse.antlr.sql.statement.dml.SelectStatement selectStatement)

Method Summary

Modifier and Type	Method and Description
Object	getCalendarValue(int columnIndex, Class<?> type, Calendar calendar) Get calendar value.
Object	getCalendarValue(String columnLabel, Class<?> type, Calendar calendar) Get calendar value.
Object	getValue(int columnIndex, Class<?> type) Get data value.
Object	getValue(String columnLabel, Class<?> type) Get data value.
boolean	next() iterate next data.

Methods inherited from class org.apache.shardingsphere.core.merge.dql.common.StreamMergedResult

getCurrentQueryResult, getInputStream, getInputStream, wasNull

Methods inherited from class java.lang.Object

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

Constructor Detail

GroupByStreamMergedResult

public GroupByStreamMergedResult(Map<String,Integer> labelAndIndexMap,
                                 List<QueryResult> queryResults,
                                 org.apache.shardingsphere.core.parse.antlr.sql.statement.dml.SelectStatement selectStatement)
                          throws SQLException

Throws:

SQLException

Method Detail

next

public boolean next()
             throws SQLException

Description copied from interface: MergedResult

iterate next data.

Specified by:

next in interface MergedResult

Overrides:

next in class OrderByStreamMergedResult

Returns:

has next data

Throws:

SQLException - SQL Exception

getValue

public Object getValue(int columnIndex,
                       Class<?> type)

Description copied from interface: MergedResult

Get data value.

Specified by:

getValue in interface MergedResult

Overrides:

getValue in class StreamMergedResult

Parameters:

columnIndex - column index

type - class type of data value

Returns:

data value

getValue

public Object getValue(String columnLabel,
                       Class<?> type)

Description copied from interface: MergedResult

Get data value.

Specified by:

getValue in interface MergedResult

Overrides:

getValue in class StreamMergedResult

Parameters:

columnLabel - column label

type - class type of data value

Returns:

data value

getCalendarValue

public Object getCalendarValue(int columnIndex,
                               Class<?> type,
                               Calendar calendar)

Description copied from interface: MergedResult

Get calendar value.

Specified by:

getCalendarValue in interface MergedResult

Overrides:

getCalendarValue in class StreamMergedResult

Parameters:

columnIndex - column index

type - class type of data value

calendar - calendar

Returns:

calendar value

getCalendarValue

public Object getCalendarValue(String columnLabel,
                               Class<?> type,
                               Calendar calendar)

Description copied from interface: MergedResult

Get calendar value.

Specified by:

getCalendarValue in interface MergedResult

Overrides:

getCalendarValue in class StreamMergedResult

Parameters:

columnLabel - column label

type - class type of data value

calendar - calendar

Returns:

calendar value