com.espertech.esper.epl.join.plan

Class QueryPlanNode

java.lang.Object

com.espertech.esper.epl.join.plan.QueryPlanNode

Direct Known Subclasses:

HistoricalDataPlanNode, LookupInstructionQueryPlanNode, NestedIterationNode, QueryPlanNodeAllUnidirectionalOuter, QueryPlanNodeNoOp, TableLookupNode, TableOuterLookupNode

public abstract class QueryPlanNode
extends Object

Specification node for a query execution plan to be extended by specific execution specification nodes.

Constructor Summary

Constructors

Constructor and Description
QueryPlanNode()

Method Summary

Modifier and Type	Method and Description
abstract void	addIndexes(HashSet<TableLookupIndexReqKey> usedIndexes)
abstract ExecNode	makeExec(String statementName, int statementId, Annotation[] annotations, Map<TableLookupIndexReqKey,EventTable>[] indexesPerStream, EventType[] streamTypes, Viewable[] streamViews, HistoricalStreamIndexList[] historicalStreamIndexLists, VirtualDWView[] viewExternal, Lock[] tableSecondaryIndexLocks) Make execution node from this specification.
protected abstract void	print(IndentWriter writer) Print a long readable format of the query node to the supplied PrintWriter.
static String	print(QueryPlanNode[] planNodeSpecs) Print in readable format the execution plan spec.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryPlanNode

public QueryPlanNode()

Method Detail

makeExec

public abstract ExecNode makeExec(String statementName,
                                  int statementId,
                                  Annotation[] annotations,
                                  Map<TableLookupIndexReqKey,EventTable>[] indexesPerStream,
                                  EventType[] streamTypes,
                                  Viewable[] streamViews,
                                  HistoricalStreamIndexList[] historicalStreamIndexLists,
                                  VirtualDWView[] viewExternal,
                                  Lock[] tableSecondaryIndexLocks)

Make execution node from this specification.

Parameters:

statementName - statement name

statementId - statement id

annotations - annotations

indexesPerStream - - tables build for each stream

streamTypes - - event type of each stream

streamViews - - viewable per stream for access to historical data

historicalStreamIndexLists - index management for historical streams

viewExternal - view

tableSecondaryIndexLocks - locks

Returns:

execution node matching spec

addIndexes

public abstract void addIndexes(HashSet<TableLookupIndexReqKey> usedIndexes)

print

protected abstract void print(IndentWriter writer)

Print a long readable format of the query node to the supplied PrintWriter.

Parameters:

writer - is the indentation writer to print to

print

public static String print(QueryPlanNode[] planNodeSpecs)

Print in readable format the execution plan spec.

Parameters:

planNodeSpecs - - plans to print

Returns:

readable text with plans