Package com.espertech.esper.epl.expression.core

Core expression classes.

See:
Description

Interface Summary

ExprConstantNode	Represents a constant in an expressiun tree.
ExprEvaluator	Interface for evaluating of an event tuple.
ExprEvaluatorContext	Returns the context for expression evaluation.
ExprEvaluatorEnumeration	Interface for evaluating of an event tuple.
ExprEvaluatorEnumerationGivenEvent	Interface for evaluating of an event re.
ExprEvaluatorTypableReturn	Interface for evaluators that select possible multi-valued results in a single select column, such as subqueries and "new" and case+new combined.
ExprFilterOptimizableNode
ExprIdentNode	Represents an stream property identifier in a filter expressiun tree.
ExprIdentNodeEvaluator
ExprNamedParameterNode
ExprNode
ExprNodeInnerNodeProvider
ExprNodePropOrStreamDesc
ExprNodeUtilResolveExceptionHandler
ExprStreamRefNode	Represents a stream-reference.
ExprStreamUnderlyingNode	Represents an stream selector that returns the streams underlying event, or null if undefined.
ExprValidator	Validation interface for expression nodes.
ExprVariableNode	Represents a variable in an expression tree.
ExprWildcard	Expression for use as wildcard (*).

Class Summary

ExprChainedSpec
ExprConstantNodeImpl	Represents a constant in an expressiun tree.
ExprContextPropertyNode	Represents an stream property identifier in a filter expressiun tree.
ExprCurrentEvaluationContextNode	Represents the "current_evaluation_context" function in an expression tree.
ExprEvaluatorContextTimeOnly	Represents a minimal enginel-level context for expression evaluation, not allowing for agents instances and result cache.
ExprEvaluatorProxy
ExprGroupingIdNode
ExprGroupingNode
ExprIdentNodeEvaluatorContext
ExprIdentNodeEvaluatorImpl
ExprIdentNodeEvaluatorLogging
ExprIdentNodeImpl	Represents an stream property identifier in a filter expressiun tree.
ExprIdentNodeUtil
ExprNamedParameterNodeImpl
ExprNodeBase	Superclass for filter nodes in a filter expression tree.
ExprNodePropOrStreamExprDesc
ExprNodePropOrStreamPropDesc
ExprNodePropOrStreamSet
ExprNodeProxy
ExprNodeUtilExprEvalMethodContext
ExprNodeUtilExprEvalStreamNumEnumColl
ExprNodeUtilExprEvalStreamNumEnumSingle
ExprNodeUtilExprEvalStreamNumEvent
ExprNodeUtilExprEvalStreamNumEventTable
ExprNodeUtilExprEvalStreamNumUnd
ExprNodeUtility
ExprNodeUtility.MappedPropertyParseResult	Encapsulates the parse result parsing a mapped property as a class and method name with args.
ExprNodeUtilMethodDesc
ExprNodeUtilResolveExceptionHandlerDefault
ExprNodeUtilUnderlyingEvaluator
ExprNodeUtilUnderlyingEvaluatorTable
ExprNodeValidated	A placeholder for another expression node that has been validated already.
ExprNumberSetCronParam	Expression for a parameter within a crontab.
ExprNumberSetFrequency	Expression for use within crontab to specify a frequency.
ExprNumberSetList	Expression for use within crontab to specify a list of values.
ExprNumberSetRange	Expression for use within crontab to specify a range.
ExprOrderedExpr	A placeholder expression for view/pattern object parameters that allow sorting expression values ascending or descending.
ExprStreamUnderlyingNodeImpl	Represents an stream selector that returns the streams underlying event, or null if undefined.
ExprSubstitutionNode	Represents a substitution value to be substituted in an expression tree, not valid for any purpose of use as an expression, however can take a place in an expression tree.
ExprTypedNoEvalNode	Represents an expression node that returns the predefined type and that cannot be evaluated.
ExprValidationContext
ExprVariableNodeImpl	Represents a variable in an expression tree.
ExprWildcardImpl	Expression for use within crontab to specify a wildcard.

Enum Summary

ExprNodeOrigin
ExprPrecedenceEnum	Precendence levels for expressions.
ExprValidationContextUseEnum

Exception Summary

ExprValidationException	Thrown to indicate a validation error in a filter expression.
ExprValidationPropertyException	Thrown to indicate a validation error in an expression originating from a property resolution error.

Package com.espertech.esper.epl.expression.core Description

Core expression classes.