com.espertech.esper.epl.core

Class OrderByProcessorFactoryFactory

java.lang.Object

com.espertech.esper.epl.core.OrderByProcessorFactoryFactory

public class OrderByProcessorFactoryFactory
extends Object

Factory for OrderByProcessor processors.

Constructor Summary

Constructors

Constructor and Description
OrderByProcessorFactoryFactory()

Method Summary

Modifier and Type	Method and Description
static OrderByProcessorFactory	getProcessor(List<SelectClauseExprCompiledSpec> selectionList, ExprEvaluator[] groupByNodeEvals, List<OrderByItem> orderByList, RowLimitSpec rowLimitSpec, VariableService variableService, boolean isSortUsingCollator, String optionalContextName, EngineImportService engineImportService, boolean onDemandQuery, String statementName) Returns processor for order-by clauses.

Methods inherited from class java.lang.Object

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

Constructor Detail

OrderByProcessorFactoryFactory

public OrderByProcessorFactoryFactory()

Method Detail

getProcessor

public static OrderByProcessorFactory getProcessor(List<SelectClauseExprCompiledSpec> selectionList,
                                                   ExprEvaluator[] groupByNodeEvals,
                                                   List<OrderByItem> orderByList,
                                                   RowLimitSpec rowLimitSpec,
                                                   VariableService variableService,
                                                   boolean isSortUsingCollator,
                                                   String optionalContextName,
                                                   EngineImportService engineImportService,
                                                   boolean onDemandQuery,
                                                   String statementName)
                                            throws ExprValidationException

Returns processor for order-by clauses.

Parameters:

selectionList - is a list of select expressions

groupByNodeEvals - is a list of group-by expressions

orderByList - is a list of order-by expressions

rowLimitSpec - specification for row limit, or null if no row limit is defined

variableService - for retrieving variable state for use with row limiting

isSortUsingCollator - for string value sorting using compare or Collator

optionalContextName - context name

engineImportService - engine import svc

onDemandQuery - fire-and-forget flag

statementName - statement name

Returns:

ordering processor instance

Throws:

ExprValidationException - when validation of expressions fails