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

Class LookupInstructionQueryPlanNode

java.lang.Object

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

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

public class LookupInstructionQueryPlanNode
extends QueryPlanNode

Query plan for executing a set of lookup instructions and assembling an end result via a set of assembly instructions.

Field Summary

Fields

Modifier and Type	Field	Description
static final EPTypeClass	EPTYPE

Constructor Summary

Constructors

Constructor	Description
LookupInstructionQueryPlanNode(int rootStream, String rootStreamName, int numStreams, boolean[] requiredPerStream, LookupInstructionPlan[] lookupInstructions, BaseAssemblyNodeFactory[] assemblyInstructionFactories)	Ctor.

Method Summary

Modifier and Type	Method	Description
LookupInstructionPlan[]	getLookupInstructions()
int	getNumStreams()
ExecNode	makeExec(AgentInstanceContext agentInstanceContext, Map<TableLookupIndexReqKey,EventTable>[] indexesPerStream, EventType[] streamTypes, Viewable[] streamViews, VirtualDWView[] viewExternal, Lock[] tableSecondaryIndexLocks)

Methods inherited from class java.lang.Object

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

Field Details

EPTYPE

public static final EPTypeClass EPTYPE

Constructor Details

LookupInstructionQueryPlanNode

public LookupInstructionQueryPlanNode(int rootStream,
 String rootStreamName,
 int numStreams,
 boolean[] requiredPerStream,
 LookupInstructionPlan[] lookupInstructions,
 BaseAssemblyNodeFactory[] assemblyInstructionFactories)

Ctor.

Parameters:

rootStream - is the stream supplying the lookup event

rootStreamName - is the name of the stream supplying the lookup event

numStreams - is the number of streams

lookupInstructions - is a list of lookups to perform

requiredPerStream - indicates which streams are required and which are optional in the lookup

assemblyInstructionFactories - is the bottom-up assembly factory nodes to assemble a lookup result nodes

Method Details

makeExec

public ExecNode makeExec(AgentInstanceContext agentInstanceContext,
 Map<TableLookupIndexReqKey,EventTable>[] indexesPerStream,
 EventType[] streamTypes,
 Viewable[] streamViews,
 VirtualDWView[] viewExternal,
 Lock[] tableSecondaryIndexLocks)

Specified by:

makeExec in class QueryPlanNode

getNumStreams

public int getNumStreams()

getLookupInstructions

public LookupInstructionPlan[] getLookupInstructions()