com.espertech.esper.epl.parse
Class ASTOutputLimitHelper

java.lang.Object
  com.espertech.esper.epl.parse.ASTOutputLimitHelper

public class ASTOutputLimitHelper
extends java.lang.Object

Builds an output limit spec from an output limit AST node.

Constructor Summary

ASTOutputLimitHelper()

Method Summary

static OutputLimitSpec	buildOutputLimitSpec(org.antlr.v4.runtime.CommonTokenStream tokenStream, EsperEPL2GrammarParser.OutputLimitContext ctx, java.util.Map<org.antlr.v4.runtime.tree.Tree,ExprNode> astExprNodeMap, VariableService variableService, java.lang.String engineURI, TimeProvider timeProvider, ExprEvaluatorContext exprEvaluatorContext) Build an output limit spec from the AST node supplied.
static RowLimitSpec	buildRowLimitSpec(EsperEPL2GrammarParser.RowLimitContext ctx) Builds a row limit specification.

Methods inherited from class java.lang.Object

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

Constructor Detail

ASTOutputLimitHelper

public ASTOutputLimitHelper()

Method Detail

buildOutputLimitSpec

public static OutputLimitSpec buildOutputLimitSpec(org.antlr.v4.runtime.CommonTokenStream tokenStream,
                                                   EsperEPL2GrammarParser.OutputLimitContext ctx,
                                                   java.util.Map<org.antlr.v4.runtime.tree.Tree,ExprNode> astExprNodeMap,
                                                   VariableService variableService,
                                                   java.lang.String engineURI,
                                                   TimeProvider timeProvider,
                                                   ExprEvaluatorContext exprEvaluatorContext)

Build an output limit spec from the AST node supplied.

Parameters:

astExprNodeMap - is the map of current AST tree nodes to their respective expression root node

engineURI - the engine uri

timeProvider - provides time

variableService - provides variable resolution

exprEvaluatorContext - context for expression evaluatiom

Returns:

output limit spec

buildRowLimitSpec

public static RowLimitSpec buildRowLimitSpec(EsperEPL2GrammarParser.RowLimitContext ctx)

Builds a row limit specification.

Returns:

row limit spec