Package com.espertech.esper.common.internal.epl.join.queryplan

Class QueryPlanIndexForge

java.lang.Object

com.espertech.esper.common.internal.epl.join.queryplan.QueryPlanIndexForge

All Implemented Interfaces:

CodegenMakeable<SAIFFInitializeSymbol>

public class QueryPlanIndexForge
extends Object
implements CodegenMakeable<SAIFFInitializeSymbol>

Specifies an index to build as part of an overall query plan.

Constructor Summary

Constructors

Constructor	Description
QueryPlanIndexForge(Map<TableLookupIndexReqKey,QueryPlanIndexItemForge> items)

Method Summary

Modifier and Type	Method	Description
String	addIndex(String[] indexProperties, EPTypeClass[] coercionTypes, EventType eventType)
EPTypeClass[]	getCoercionTypes(String[] indexProperties)	Returns a list of coercion types for a given index.
protected TableLookupIndexReqKey	getFirstIndexNum()
Pair<TableLookupIndexReqKey,int[]>	getIndexNum(String[] indexProps, String[] rangeProps)	Find a matching index for the property names supplied.
String[][]	getIndexProps()	For testing - Returns property names of all indexes.
Map<TableLookupIndexReqKey,QueryPlanIndexItemForge>	getItems()
CodegenExpression	make(CodegenMethodScope parent, SAIFFInitializeSymbol symbols, CodegenClassScope classScope)
static QueryPlanIndexForge	makeIndex(List<QueryPlanIndexItemForge> indexesSet)
static QueryPlanIndexForge	makeIndexTableAccess(TableLookupIndexReqKey indexName)
static String	print(QueryPlanIndexForge[] indexSpecs)	Print index specifications in readable format.
void	setCoercionTypes(String[] indexProperties, EPTypeClass[] coercionTypes)	Sets the coercion types for a given index.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

QueryPlanIndexForge

public QueryPlanIndexForge(Map<TableLookupIndexReqKey,QueryPlanIndexItemForge> items)

Method Details

make

public CodegenExpression make(CodegenMethodScope parent,
 SAIFFInitializeSymbol symbols,
 CodegenClassScope classScope)

Specified by:

make in interface CodegenMakeable<SAIFFInitializeSymbol>

getItems

public Map<TableLookupIndexReqKey,QueryPlanIndexItemForge> getItems()

makeIndex

public static QueryPlanIndexForge makeIndex(List<QueryPlanIndexItemForge> indexesSet)

getIndexNum

public Pair<TableLookupIndexReqKey,int[]> getIndexNum(String[] indexProps,
 String[] rangeProps)

Find a matching index for the property names supplied.

Parameters:

indexProps - - property names to search for

rangeProps - - range props

Returns:

-1 if not found, or offset within indexes if found

getFirstIndexNum

protected TableLookupIndexReqKey getFirstIndexNum()

addIndex

public String addIndex(String[] indexProperties,
 EPTypeClass[] coercionTypes,
 EventType eventType)

getIndexProps

public String[][] getIndexProps()

For testing - Returns property names of all indexes.

Returns:

property names array

getCoercionTypes

public EPTypeClass[] getCoercionTypes(String[] indexProperties)

Returns a list of coercion types for a given index.

Parameters:

indexProperties - is the index field names

Returns:

coercion types, or null if no coercion is required

setCoercionTypes

public void setCoercionTypes(String[] indexProperties,
 EPTypeClass[] coercionTypes)

Sets the coercion types for a given index.

Parameters:

indexProperties - is the index property names

coercionTypes - is the coercion types

toString

public String toString()

Overrides:

toString in class Object

print

public static String print(QueryPlanIndexForge[] indexSpecs)

Print index specifications in readable format.

Parameters:

indexSpecs - - define indexes

Returns:

readable format of index info

makeIndexTableAccess

public static QueryPlanIndexForge makeIndexTableAccess(TableLookupIndexReqKey indexName)