com.espertech.esper.epl.join.plan

Class QueryPlanBuilder

java.lang.Object

com.espertech.esper.epl.join.plan.QueryPlanBuilder

public class QueryPlanBuilder
extends Object

Build a query plan based on filtering information.

Constructor Summary

Constructors

Constructor and Description
QueryPlanBuilder()

Method Summary

Modifier and Type

Method and Description

static QueryPlan

getPlan(EventType[] typesPerStream, OuterJoinDesc[] outerJoinDescList, QueryGraph queryGraph, String[] streamNames, HistoricalViewableDesc historicalViewableDesc, DependencyGraph dependencyGraph, HistoricalStreamIndexList[] historicalStreamIndexLists, StreamJoinAnalysisResult streamJoinAnalysisResult, boolean isQueryPlanLogging, Annotation[] annotations, ExprEvaluatorContext exprEvaluatorContext, EngineImportService engineImportService, boolean isFireAndForget) Build query plan using the filter.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryPlanBuilder

public QueryPlanBuilder()

Method Detail

getPlan

public static QueryPlan getPlan(EventType[] typesPerStream,
                                OuterJoinDesc[] outerJoinDescList,
                                QueryGraph queryGraph,
                                String[] streamNames,
                                HistoricalViewableDesc historicalViewableDesc,
                                DependencyGraph dependencyGraph,
                                HistoricalStreamIndexList[] historicalStreamIndexLists,
                                StreamJoinAnalysisResult streamJoinAnalysisResult,
                                boolean isQueryPlanLogging,
                                Annotation[] annotations,
                                ExprEvaluatorContext exprEvaluatorContext,
                                EngineImportService engineImportService,
                                boolean isFireAndForget)
                         throws ExprValidationException

Build query plan using the filter.

Parameters:

typesPerStream - - event types for each stream

outerJoinDescList - - list of outer join criteria, or null if there are no outer joins

queryGraph - - relationships between streams based on filter expressions and outer-join on-criteria

streamNames - - names of streams

dependencyGraph - - dependencies between historical streams

historicalStreamIndexLists - - index management, populated for the query plan

streamJoinAnalysisResult - stream join analysis metadata

historicalViewableDesc - historicals

isQueryPlanLogging - for logging

exprEvaluatorContext - context

annotations - annotations

isFireAndForget - fire-and-forget flag

engineImportService - engine imports

Returns:

query plan

Throws:

ExprValidationException - if the query plan fails