com.espertech.esper.epl.agg.aggregator

Class AggregatorMinMax

java.lang.Object

com.espertech.esper.epl.agg.aggregator.AggregatorMinMax

All Implemented Interfaces:

AggregationMethod

Direct Known Subclasses:

AggregatorMinMaxFilter

public class AggregatorMinMax
extends java.lang.Object
implements AggregationMethod

Min/max aggregator for all values.

Field Summary

Fields

Modifier and Type	Field and Description
protected MinMaxTypeEnum	minMaxTypeEnum
protected SortedRefCountedSet<java.lang.Object>	refSet

Constructor Summary

Constructors

Constructor and Description
AggregatorMinMax(MinMaxTypeEnum minMaxTypeEnum) Ctor.

Method Summary

Modifier and Type	Method and Description
static void	applyEnterCodegen(AggregationMethodFactoryMinMax forge, int column, CodegenMethodNode method, ExprForgeCodegenSymbol symbols, ExprForge[] forges, CodegenClassScope classScope)
static void	applyLeaveCodegen(AggregationMethodFactoryMinMax forge, int column, CodegenMethodNode method, ExprForgeCodegenSymbol symbols, ExprForge[] forges, CodegenClassScope classScope)
void	clear() Clear out the collection.
static void	clearCodegen(boolean distinct, int column, CodegenMethodNode method, CodegenClassScope classScope)
void	enter(java.lang.Object object) Apply the value as entering aggregation (entering window).
SortedRefCountedSet<java.lang.Object>	getRefSet()
java.lang.Object	getValue() Returns the current value held.
static void	getValueCodegen(AggregationMethodFactoryMinMax forge, int column, CodegenMethodNode method)
void	leave(java.lang.Object object) Apply the value as leaving aggregation (leaving window).
static void	rowMemberCodegen(boolean distinct, int column, CodegenCtor ctor, CodegenMembersColumnized membersColumnized)

Methods inherited from class java.lang.Object

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

Field Detail

minMaxTypeEnum

protected final MinMaxTypeEnum minMaxTypeEnum

refSet

protected SortedRefCountedSet<java.lang.Object> refSet

Constructor Detail

AggregatorMinMax

public AggregatorMinMax(MinMaxTypeEnum minMaxTypeEnum)

Ctor.

Parameters:

minMaxTypeEnum - - enum indicating to return minimum or maximum values

Method Detail

rowMemberCodegen

public static void rowMemberCodegen(boolean distinct,
                                    int column,
                                    CodegenCtor ctor,
                                    CodegenMembersColumnized membersColumnized)

enter

public void enter(java.lang.Object object)

Description copied from interface: AggregationMethod

Apply the value as entering aggregation (entering window).

The value can be null since 'null' values may be counted as unique separate values.

Specified by:

enter in interface AggregationMethod

Parameters:

object - to add to aggregate

applyEnterCodegen

public static void applyEnterCodegen(AggregationMethodFactoryMinMax forge,
                                     int column,
                                     CodegenMethodNode method,
                                     ExprForgeCodegenSymbol symbols,
                                     ExprForge[] forges,
                                     CodegenClassScope classScope)

leave

public void leave(java.lang.Object object)

Description copied from interface: AggregationMethod

Apply the value as leaving aggregation (leaving window).

The value can be null since 'null' values may be counted as unique separate values.

Specified by:

leave in interface AggregationMethod

Parameters:

object - to remove from aggregate

applyLeaveCodegen

public static void applyLeaveCodegen(AggregationMethodFactoryMinMax forge,
                                     int column,
                                     CodegenMethodNode method,
                                     ExprForgeCodegenSymbol symbols,
                                     ExprForge[] forges,
                                     CodegenClassScope classScope)

clear

public void clear()

Description copied from interface: AggregationMethod

Clear out the collection.

Specified by:

clear in interface AggregationMethod

clearCodegen

public static void clearCodegen(boolean distinct,
                                int column,
                                CodegenMethodNode method,
                                CodegenClassScope classScope)

getValue

public java.lang.Object getValue()

Description copied from interface: AggregationMethod

Returns the current value held.

Specified by:

getValue in interface AggregationMethod

Returns:

current value

getValueCodegen

public static void getValueCodegen(AggregationMethodFactoryMinMax forge,
                                   int column,
                                   CodegenMethodNode method)

getRefSet

public SortedRefCountedSet<java.lang.Object> getRefSet()