Package net.esper.eql.parse

Parsers and AST tree walkers and helper classes transforming AST into business objects

See:
Description

Interface Summary

NumberSetParameter	Interface to generate a set of integers from parameters that include ranges, lists and frequencies.
ParseRuleSelector	For selection of the parse rule to use.
WalkRuleSelector	For selection of the AST tree walk rule to use.

Class Summary

ASTConstantHelper	Parses constant strings and returns the constant Object.
ASTFilterSpecHelper	Builds a filter specification from filter AST nodes.
ASTOutputLimitHelper	Builds an output limit spec from an output limit AST node.
ASTParameterHelper	Parse AST parameter nodes including constants, arrays, lists.
ASTViewSpecHelper	Builds a view specification from view AST nodes.
EQLTreeWalker	Called during the walks of a EQL expression AST tree as specified in the grammar file.
FrequencyParameter	Encapsulates a parameter specifying a frequency, i.e.
IntParameter	Parameter supplying a single int value is a set of numbers.
ListParameter	Represents a list of values in a set of numeric parameters.
ParseHelper	Helper class for parsing an expression and walking a parse tree.
RangeParameter	Represents a range of numbers as a parameter.
TimePeriodParameter	Parameter for views that accept time period information such as "5 sec 100 msec".
WildcardParameter	Represents a wildcard as a parameter.

Exception Summary

ASTFilterSpecValidationException	This exception is thrown to indicate a problem in a filter specification.
ASTWalkException	This exception is thrown to indicate a problem in statement creation.
EPStatementSyntaxException	This exception is thrown to indicate a problem in statement creation.

Package net.esper.eql.parse Description

Parsers and AST tree walkers and helper classes transforming AST into business objects