Package org.apache.iotdb.db.mpp.plan.statement.crud

Class QueryStatement

java.lang.Object

org.apache.iotdb.db.mpp.plan.statement.StatementNode

org.apache.iotdb.db.mpp.plan.statement.Statement

org.apache.iotdb.db.mpp.plan.statement.crud.QueryStatement

public class QueryStatement
extends Statement

Base class of SELECT statement.

Here is the syntax definition of SELECT statement:

SELECT
• [LAST] resultColumn [, resultColumn] ...
• FROM prefixPath [, prefixPath] ...
• WHERE whereCondition
• [GROUP BY ([startTime, endTime), interval, slidingStep)]
• [GROUP BY LEVEL = levelNum [, levelNum] ...]
• [FILL ({PREVIOUS | LINEAR | constant})]
• [LIMIT rowLimit] [OFFSET rowOffset]
• [SLIMIT seriesLimit] [SOFFSET seriesOffset]
• [ORDER BY TIME {ASC | DESC}]
• [{ALIGN BY DEVICE | DISABLE ALIGN}]

Field Summary

Fields

Modifier and Type	Field	Description
protected FillComponent	fillComponent
protected FromComponent	fromComponent
protected GroupByLevelComponent	groupByLevelComponent
protected GroupByTimeComponent	groupByTimeComponent
protected HavingCondition	havingCondition
protected OrderByComponent	orderByComponent
protected ResultSetFormat	resultSetFormat
protected int	rowLimit
protected int	rowOffset
protected SelectComponent	selectComponent
protected int	seriesLimit
protected int	seriesOffset
protected WhereCondition	whereCondition

Fields inherited from class org.apache.iotdb.db.mpp.plan.statement.Statement

isDebug, statementType

Constructor Summary

Constructors

Constructor	Description
QueryStatement()

Method Summary

Modifier and Type	Method	Description
<R,C> R	accept(StatementVisitor<R,C> visitor, C context)	Accessible for StatementVisitor, use StatementVisitor.process(StatementNode, Object) instead.
boolean	disableAlign()
FillComponent	getFillComponent()
FromComponent	getFromComponent()
GroupByLevelComponent	getGroupByLevelComponent()
GroupByTimeComponent	getGroupByTimeComponent()
HavingCondition	getHavingCondition()
OrderByComponent	getOrderByComponent()
java.util.List<org.apache.iotdb.commons.path.PartialPath>	getPaths()
ResultSetFormat	getResultSetFormat()
Ordering	getResultTimeOrder()
int	getRowLimit()
int	getRowOffset()
SelectComponent	getSelectComponent()
int	getSeriesLimit()
int	getSeriesOffset()
java.util.List<SortItem>	getSortItemList()
WhereCondition	getWhereCondition()
boolean	hasHaving()
boolean	isAggregationQuery()
boolean	isAlignByDevice()
boolean	isGroupByLevel()
boolean	isGroupByTime()
boolean	isLastQuery()
boolean	isOrderByDevice()
boolean	isOrderByTime()
boolean	isOrderByTimeseries()
void	semanticCheck()
void	setFillComponent(FillComponent fillComponent)
void	setFromComponent(FromComponent fromComponent)
void	setGroupByLevelComponent(GroupByLevelComponent groupByLevelComponent)
void	setGroupByTimeComponent(GroupByTimeComponent groupByTimeComponent)
void	setHavingCondition(HavingCondition havingCondition)
void	setOrderByComponent(OrderByComponent orderByComponent)
void	setResultSetFormat(ResultSetFormat resultSetFormat)
void	setRowLimit(int rowLimit)
void	setRowOffset(int rowOffset)
void	setSelectComponent(SelectComponent selectComponent)
void	setSeriesLimit(int seriesLimit)
void	setSeriesOffset(int seriesOffset)
void	setWhereCondition(WhereCondition whereCondition)

Methods inherited from class org.apache.iotdb.db.mpp.plan.statement.Statement

getType, isAuthenticationRequired, isDebug, isQuery, setDebug, setType

Methods inherited from class java.lang.Object

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

Field Detail

selectComponent

protected SelectComponent selectComponent

fromComponent

protected FromComponent fromComponent

whereCondition

protected WhereCondition whereCondition

havingCondition

protected HavingCondition havingCondition

rowLimit

protected int rowLimit

rowOffset

protected int rowOffset

seriesLimit

protected int seriesLimit

seriesOffset

protected int seriesOffset

fillComponent

protected FillComponent fillComponent

orderByComponent

protected OrderByComponent orderByComponent

resultSetFormat

protected ResultSetFormat resultSetFormat

groupByTimeComponent

protected GroupByTimeComponent groupByTimeComponent

groupByLevelComponent

protected GroupByLevelComponent groupByLevelComponent

Constructor Detail

QueryStatement

public QueryStatement()

Method Detail

getPaths

public java.util.List<org.apache.iotdb.commons.path.PartialPath> getPaths()

Specified by:

getPaths in class Statement

getSelectComponent

public SelectComponent getSelectComponent()

setSelectComponent

public void setSelectComponent(SelectComponent selectComponent)

getFromComponent

public FromComponent getFromComponent()

setFromComponent

public void setFromComponent(FromComponent fromComponent)

getWhereCondition

public WhereCondition getWhereCondition()

setWhereCondition

public void setWhereCondition(WhereCondition whereCondition)

hasHaving

public boolean hasHaving()

getHavingCondition

public HavingCondition getHavingCondition()

setHavingCondition

public void setHavingCondition(HavingCondition havingCondition)

getRowLimit

public int getRowLimit()

setRowLimit

public void setRowLimit(int rowLimit)

getRowOffset

public int getRowOffset()

setRowOffset

public void setRowOffset(int rowOffset)

getSeriesLimit

public int getSeriesLimit()

setSeriesLimit

public void setSeriesLimit(int seriesLimit)

getSeriesOffset

public int getSeriesOffset()

setSeriesOffset

public void setSeriesOffset(int seriesOffset)

getFillComponent

public FillComponent getFillComponent()

setFillComponent

public void setFillComponent(FillComponent fillComponent)

getOrderByComponent

public OrderByComponent getOrderByComponent()

setOrderByComponent

public void setOrderByComponent(OrderByComponent orderByComponent)

getResultSetFormat

public ResultSetFormat getResultSetFormat()

setResultSetFormat

public void setResultSetFormat(ResultSetFormat resultSetFormat)

getGroupByTimeComponent

public GroupByTimeComponent getGroupByTimeComponent()

setGroupByTimeComponent

public void setGroupByTimeComponent(GroupByTimeComponent groupByTimeComponent)

getGroupByLevelComponent

public GroupByLevelComponent getGroupByLevelComponent()

setGroupByLevelComponent

public void setGroupByLevelComponent(GroupByLevelComponent groupByLevelComponent)

isLastQuery

public boolean isLastQuery()

isAggregationQuery

public boolean isAggregationQuery()

isGroupByLevel

public boolean isGroupByLevel()

isGroupByTime

public boolean isGroupByTime()

isAlignByDevice

public boolean isAlignByDevice()

disableAlign

public boolean disableAlign()

isOrderByTime

public boolean isOrderByTime()

isOrderByTimeseries

public boolean isOrderByTimeseries()

isOrderByDevice

public boolean isOrderByDevice()

getResultTimeOrder

public Ordering getResultTimeOrder()

getSortItemList

public java.util.List<SortItem> getSortItemList()

semanticCheck

public void semanticCheck()

accept

public <R,C> R accept(StatementVisitor<R,C> visitor,
                            C context)

Description copied from class: StatementNode

Accessible for StatementVisitor, use StatementVisitor.process(StatementNode, Object) instead.

Overrides:

accept in class StatementNode