Package com.espertech.esper.pattern

Pattern expression tree and pattern state objects, the later resembles pattern expression state for each active pattern instance

See: Description

Interface Summary

Interface	Description
EvalFactoryNode	Superclass of all nodes in an evaluation tree representing an event pattern expression.
EvalFilterStateNodeConsume
EvalNode	Superclass of all nodes in an evaluation tree representing an event pattern expression.
EvalNodeUtilFactoryFilter
EvalRootMatchRemover	Interface for a root pattern node for removing matches.
EvalRootState	Interface for a root state node accepting a callback to use to indicate pattern results.
EvalStateNodeVisitor	Interface for visiting each element in the evaluation node tree for an event expression (see Visitor pattern).
Evaluator	Interface for nodes in an expression evaluation state tree that are being informed by a child that the event expression fragments (subtrees) which the child represents has turned true (evaluateTrue method) or false (evaluateFalse).
MatchedEventConvertor	Converts from a map of prior matching events to a events per stream for resultion by expressions.
MatchedEventMap	Collection for internal use similar to the MatchedEventMap class in the client package that holds the one or more events that could match any defined event expressions.
PatternContextFactory	Factory for pattern context instances, creating context objects for each distinct pattern based on the patterns root node and stream id.
PatternMatchCallback	Callback interface for anything that requires to be informed of matching events which would be stored in the MatchedEventMap structure passed to the implementation.
PatternNodeFactory
PatternObjectResolutionService	Factory service for resolving pattern objects such as guards and observers.
PatternStarter	Interface for observing when an event expression needs to start (by adding the first listener).
PatternStopCallback	Interface for executing a stop on an active event expression.

Class Summary

Class	Description
EvalAndFactoryNode	This class represents an 'and' operator in the evaluation tree representing an event expressions.
EvalAndNode	This class represents an 'and' operator in the evaluation tree representing an event expressions.
EvalAndStateNode	This class represents the state of an "and" operator in the evaluation state tree.
EvalAuditFactoryNode	This class represents an 'or' operator in the evaluation tree representing any event expressions.
EvalAuditInstanceCount
EvalAuditNode	This class represents an 'or' operator in the evaluation tree representing any event expressions.
EvalAuditStateNode	This class represents the state of a followed-by operator in the evaluation state tree.
EvalEveryDistinctFactoryNode	This class represents an 'every-distinct' operator in the evaluation tree representing an event expression.
EvalEveryDistinctNode	This class represents an 'every-distinct' operator in the evaluation tree representing an event expression.
EvalEveryDistinctStateExpireKeyNode	Contains the state collected by an "every" operator.
EvalEveryDistinctStateNode	Contains the state collected by an "every" operator.
EvalEveryFactoryNode	This class represents an 'every' operator in the evaluation tree representing an event expression.
EvalEveryNode	This class represents an 'every' operator in the evaluation tree representing an event expression.
EvalEveryStateNode	Contains the state collected by an "every" operator.
EvalEveryStateSpawnEvaluator	This class contains the state of an 'every' operator in the evaluation state tree.
EvalFilterConsumptionHandler
EvalFilterFactoryNode	This class represents a filter of events in the evaluation tree representing any event expressions.
EvalFilterNode	This class represents a filter of events in the evaluation tree representing any event expressions.
EvalFilterStateNode	This class contains the state of a single filter expression in the evaluation state tree.
EvalFilterStateNodeConsumeImpl	This class contains the state of a single filter expression in the evaluation state tree.
EvalFollowedByFactoryNode	This class represents a followed-by operator in the evaluation tree representing any event expressions.
EvalFollowedByNode	This class represents a followed-by operator in the evaluation tree representing any event expressions.
EvalFollowedByStateNode	This class represents the state of a followed-by operator in the evaluation state tree.
EvalFollowedByWithMaxStateNodeManaged	This class represents the state of a followed-by operator in the evaluation state tree, with a maximum number of instances provided, and with the additional capability to engine-wide report on pattern instances.
EvalGuardFactoryNode	This class represents a guard in the evaluation tree representing an event expressions.
EvalGuardNode	This class represents a guard in the evaluation tree representing an event expressions.
EvalGuardStateNode	This class represents the state of a "within" operator in the evaluation state tree.
EvalMatchUntilFactoryNode	This class represents a match-until observer in the evaluation tree representing any event expressions.
EvalMatchUntilNode	This class represents a match-until observer in the evaluation tree representing any event expressions.
EvalMatchUntilStateBounds
EvalMatchUntilStateNode	This class represents the state of a match-until node in the evaluation state tree.
EvalNodeAnalysisResult	Result of analysis of pattern expression node tree.
EvalNodeBase	Superclass of all nodes in an evaluation tree representing an event pattern expression.
EvalNodeFactoryBase	Superclass of all nodes in an evaluation tree representing an event pattern expression.
EvalNodeUtil
EvalNotFactoryNode	This class represents an 'not' operator in the evaluation tree representing any event expressions.
EvalNotNode	This class represents an 'not' operator in the evaluation tree representing any event expressions.
EvalNotStateNode	This class contains the state of an 'not' operator in the evaluation state tree.
EvalObserverFactoryNode	This class represents an observer expression in the evaluation tree representing an pattern expression.
EvalObserverNode	This class represents an observer expression in the evaluation tree representing an pattern expression.
EvalObserverStateNode	This class represents the state of an eventObserver sub-expression in the evaluation state tree.
EvalOrFactoryNode	This class represents an 'or' operator in the evaluation tree representing any event expressions.
EvalOrNode	This class represents an 'or' operator in the evaluation tree representing any event expressions.
EvalOrStateNode	This class represents the state of a "or" operator in the evaluation state tree.
EvalRootFactoryNode	This class is always the root node in the evaluation tree representing an event expression.
EvalRootNode	This class is always the root node in the evaluation tree representing an event expression.
EvalRootStateNode	This class is always the root node in the evaluation state tree representing any activated event expression.
EvalStateNode	Superclass of all state nodes in an evaluation node tree representing an event expressions.
EvalStateNodeNumber
MatchedEventConvertorImpl	Implements a convertor for pattern partial results to events per stream.
MatchedEventMapImpl	Collection for internal use similar to the MatchedEventMap class in the client package that holds the one or more events that could match any defined event expressions.
MatchedEventMapMeta
PatternAgentInstanceContext	Contains handles to implementations of services needed by evaluation nodes.
PatternConsumptionUtil
PatternContext	Contains handles to implementations of services needed by evaluation nodes.
PatternContextFactoryDefault	Default pattern context factory.
PatternExpressionUtil	Utility for evaluating pattern expressions.
PatternLevelAnnotationFlags
PatternLevelAnnotationUtil
PatternNodeFactoryImpl
PatternObjectHelper	Helper producing a repository of built-in pattern objects.
PatternObjectResolutionServiceImpl	Resolves pattern object namespace and name to guard or observer factory class, using configuration.

Enum Summary

Enum	Description
EvalFollowedByNodeOpType	Followed-by operator types in the evaluation tree representing any event expressions.
PatternExpressionPrecedenceEnum

Exception Summary

Exception	Description
PatternObjectException	This exception is thrown to indicate a problem with a view expression.

Package com.espertech.esper.pattern Description

Pattern expression tree and pattern state objects, the later resembles pattern expression state for each active pattern instance