Package com.espertech.esper.client.soda

This package defines the Esper statement object model.

See: Description

Interface Summary

Interface	Description
ContextDescriptor	Interface for context dimension descriptors.
ContextDescriptorCondition	For use with overlapping or non-overlapping contexts, implementations represents a condition for starting/initiating or ending/terminating a context.
Expression	Interface representing an expression for use in select-clauses, where-clauses, having-clauses, order-by clauses and streams based on filters and pattern filter expressions.
FireAndForgetClause	Marker interface used for fire-and-forget (on-demand) queries such as "update...set" and "delete from..." that can be executed via the API.
GroupByClauseExpression	Base interface for group-by clause expressions, covers all possible combinations of expressions, parenthesis-expression-combinations, rollup, cube and grouping sets and their parameters.
OnMergeMatchedAction	Marker interface for an on-merge clause action item.
PatternExpr	Interface representing a pattern expression.
SelectClauseElement	Item in a select-clause to describe individual select-clause expressions or wildcard(s).

Class Summary

Class	Description
AccessProjectionExpressionBase	Represents the base expression for "first", "last" and "window" aggregation functions.
AnnotationAttribute	Represents a single annotation attribute, the value of which may itself be a single value, array or further annotations.
AnnotationPart	Represents a single annotation.
ArithmaticExpression	Arithmatic expression for addition, subtraction, multiplication, division and modulo.
ArrayExpression	Array expression forms array results, similar to the syntax of "{element 1, element 2, ...
Assignment	An assignment is an expression specifically for the purpose of usage in updates.
AvedevProjectionExpression	Mean deviation of the (distinct) values returned by an expression.
AvgProjectionExpression	Average of the (distinct) values returned by an expression.
BetweenExpression	Between checks that a given value is in a range between a low endpoint and a high endpoint.
BitwiseOpExpression	Bitwise (binary) operator for binary AND, binary OR and binary XOR.
CaseSwitchExpression	Case-expression that acts as a switch testing a value against other values.
CaseWhenThenExpression	Case expression that act as a when-then-else.
CastExpression	Cast expression casts the return value of an expression to a specified type.
CoalesceExpression	Coalesce-function which returns the first non-null value in a list of values.
CompareListExpression	Represents a list-compare of the format "expression operator all/any (expressions)".
ConcatExpression	Concatenation expression that concatenates the result of child expressions to the expression.
Conjunction	Conjunction represents a logical AND allowing multiple sub-expressions to be connected by AND.
ConstantExpression	Constant value returns a fixed value for use in expressions.
ContainedEventSelect	Represents a contained-event selection.
ContextDescriptorCategory	Category-segmented context.
ContextDescriptorCategoryItem	Context descriptor for categories.
ContextDescriptorConditionCrontab	Context condition that start/initiated or ends/terminates context partitions based on a crontab expression.
ContextDescriptorConditionFilter	Context condition that start/initiated or ends/terminates context partitions based on a filter expression.
ContextDescriptorConditionImmediate	Context condition that starts/initiates immediately.
ContextDescriptorConditionNever	Context condition that starts/initiates immediately.
ContextDescriptorConditionPattern	Context condition that start/initiated or ends/terminates context partitions based on a pattern.
ContextDescriptorConditionTimePeriod	Context condition that start/initiated or ends/terminates context partitions based on a time period.
ContextDescriptorHashSegmented	Hash-segmented context.
ContextDescriptorHashSegmentedItem	Context detail for a library-func and filter pair for the hash segmented context.
ContextDescriptorInitiatedTerminated	Context dimension descriptor for a start-and-end temporal (single instance) or initiated-terminated (overlapping) context
ContextDescriptorKeyedSegmented	Context dimension information for keyed segmented context.
ContextDescriptorKeyedSegmentedItem	Context detail for a key-filter pair for the keyed segmented context.
ContextDescriptorNested	Nested context.
CountEverProjectionExpression	Represents the "countever" aggregation function.
CountProjectionExpression	Count of the (distinct) values returned by an expression, equivalent to "count(distinct property)"
CountStarProjectionExpression	Count of (distinct) rows, equivalent to "count(*)"
CreateContextClause	Create a context.
CreateDataFlowClause	Represents a create-variable syntax for creating a new variable.
CreateExpressionClause	Clause for creating an expression for use across one or more statements.
CreateIndexClause	Create an index on a named window.
CreateIndexColumn	Create an index on a named window.
CreateSchemaClause	Represents a create-schema syntax for creating a new event type.
CreateTableClause	Represents a create-variable syntax for creating a new variable.
CreateTableColumn	Table column in a create-table statement.
CreateVariableClause	Represents a create-variable syntax for creating a new variable.
CreateWindowClause	Create a named window, defining the parameter of the named window such as window name and data window view name(s).
CrontabFrequencyExpression	Frequency expression for use in crontab expressions.
CrontabParameterExpression	Parameter expression such as last/lastweek/weekday/wildcard for use in crontab expressions.
CrontabParameterSetExpression	An expression for use in crontab provides all child expression as part of a parameter list.
CrontabRangeExpression	Parameter expression for use in crontab expressions and representing a range.
CurrentEvaluationContextExpression	Current execution context supplies the current expression execution context.
CurrentTimestampExpression	Current timestamp supplies the current engine time in an expression.
DataFlowOperator	Object model of a data flow operator declaration.
DataFlowOperatorInput	Represents an input port of an operator.
DataFlowOperatorOutput	Represents an output port of an operator.
DataFlowOperatorOutputType	Represents type information for data flow operators.
DataFlowOperatorParameter	Object model of a data flow operator parameter.
Disjunction	Disjunction represents a logical OR allowing multiple sub-expressions to be connected by OR.
DotExpression	Dot-expresson is for use in "(inner_expression).dot_expression".
DotExpressionItem	Dot-expresson item is for use in "(inner_expression).dot_expression".
EPBaseNamedObject	Base class for named engine objects such as views, patterns guards and observers.
EPStatementFormatter
EPStatementObjectModel	Object model of an EPL statement.
ExpressionBase	Base expression.
ExpressionDeclaration	Represents a single expression declaration that applies to a given statement.
ExpressionPlaceholder	For use in expression as a placeholder to represent its child nodes.
Expressions	Convenience factory for creating Expression instances.
Filter	Filter defines the event type to be filtered for, and an optional expression that returns true if the filter should consider the event, or false to reject the event.
FilterStream	A stream upon which projections (views) can be added that selects events by name and filter expression.
FireAndForgetDelete	Fire-and-forget (on-demand) delete DML.
FireAndForgetInsert	Fire-and-forget (on-demand) insert DML.
FireAndForgetUpdate	Fire-and-forget (on-demand) update DML.
FirstEverProjectionExpression	Represents the "firstever" aggregation function.
FirstProjectionExpression	Represents the "first" aggregation function.
ForClause	A for-clause is a means to specify listener and observer delivery.
ForClauseItem	An item in a for-clause for controlling delivery of result events to listeners and subscribers.
FromClause	The from-clause names the streams to select upon.
GroupByClause	The group-by clause consists of a list of expressions that provide the grouped-by values.
GroupByClauseExpressionCombination	A combination of expressions is for example "(a, b)", wherein the list of expressions provided together logically make up a grouping level.
GroupByClauseExpressionGroupingSet	Represents the "grouping sets" keywords.
GroupByClauseExpressionRollupOrCube	Represents a rollup or cube in a group-by clause.
GroupByClauseExpressionSingle	Represents a single expression (non-combined, rollup/cube or grouping set) as part of a group-by expression.
GroupingExpression	Grouping-function for use with rollup, cube or grouping sets.
GroupingIdExpression	Grouping_id-function for use with rollup, cube or grouping sets.
InExpression	In-expresson checks that a value is in (or not in) a set of values, equivalent to the syntax "color in ('red', 'blue')".
InsertIntoClause	An insert-into clause consists of a stream name and column names and an optional stream selector.
InstanceOfExpression	Instance-of expression checks if an expression returns a certain type.
IntoTableClause	Into-table clause.
IStreamBuiltinExpression	Returns true for insert stream and false for remove stream, same as the "istream()" builtin function.
Junction	Base junction for conjunction (and) and disjunction (or).
LambdaExpression	Lambda-expression is an expression of the form "parameter => body" where-in the "=>" reads as goes-to.
LastEverProjectionExpression	Represents the "lastever" aggregation function.
LastProjectionExpression	Represents the "last" aggregation function.
LikeExpression	SQL-Like expression for matching '%' and '_' wildcard strings following SQL standards.
MatchRecognizeClause	Match-recognize clause.
MatchRecognizeDefine	Define-clause in match-recognize expression.
MatchRecognizeIntervalClause	Interval used within match recognize.
MatchRecognizeRegEx	Interface representing an expression for use in match-recognize.
MatchRecognizeRegExAlteration	Interface representing an expression for use in match-recognize.
MatchRecognizeRegExAtom	Atom representing an expression for use in match-recognize.
MatchRecognizeRegExConcatenation	Interface representing an expression for use in match-recognize.
MatchRecognizeRegExNested	Atom representing an expression for use in match-recognize.
MatchRecognizeRegExPermutation	Interface representing a permutation expression for use in match-recognize.
MatchRecognizeRegExPlaceholder	For use in match recognize pattern expression as a placeholder to represent its child nodes.
MatchRecognizeRegExRepeat	Match-recognize pattern descriptor for repetition
MaxProjectionExpression	Maximum of the (distinct) values returned by an expression.
MaxRowExpression	Maximum-value per-row expression (not aggregating) determines the maximum value among a set of values.
MedianProjectionExpression	Median projection (aggregation) in the distinct and regular form.
MethodInvocationStream	An stream that polls from a method.
MinProjectionExpression	Minimum of the (distinct) values returned by an expression.
MinRowExpression	Minimum-value per-row expression (not aggregating) determines the minimum value among a set of values.
NamedParameterExpression	Named parameter expression of the form "name:expression" or "name:(expression, expression...)"
NewInstanceOperatorExpression	The "new instance" operator instantiates a host language object.
NewOperatorExpression	The "new" operator is useful to format an event or event property from a list of column names and expressions.
NotExpression	Negates the contained-within subexpression.
OnClause	A clause to delete from a named window based on a triggering event arriving and correlated to the named window events to be deleted.
OnDeleteClause	A clause to delete from a named window based on a triggering event arriving and correlated to the named window events to be deleted.
OnInsertSplitStreamClause	A clause to insert into zero, one or more streams based on criteria.
OnInsertSplitStreamItem	Items within the split-stream syntax to contain a tuple of insert-into, select and where-clause.
OnMergeClause	A clause to insert, update or delete to/from a named window based on a triggering event arriving and correlated to the named window events to be updated.
OnMergeMatchedDeleteAction	For use with on-merge clauses, deletes from a named window if matching rows are found.
OnMergeMatchedInsertAction	For use with on-merge clauses, inserts into a named window if matching rows are not found.
OnMergeMatchedUpdateAction	For use with on-merge clauses, updates rows in a named window if matching rows are found.
OnMergeMatchItem	As part of on-merge, this represents a single "matched" or "not matched" entry.
OnSelectClause	A clause to delete from a named window based on a triggering event arriving and correlated to the named window events to be deleted.
OnSetClause	A clause to assign new values to variables based on a triggering event arriving.
OnUpdateClause	A clause to update a named window based on a triggering event arriving and correlated to the named window events to be updated.
OrderByClause	An order-by clause consists of expressions and flags indicating if ascending or descending.
OrderByElement	A single entry in an order-by clause consisting of an expression and order ascending or descending flag.
OrderedObjectParamExpression	For use in view parameter lists, this is a wrapper expression that adds an ascending or descending sort indicator to its single child expression.
OuterJoinQualifier	Qualifies a join by providing the outer join type (full/left/right) and joined-on properties.
OutputLimitClause	An output limit clause defines how to limit output of statements and consists of a selector specifiying which events to select to output, a frequency and a unit.
PatternAndExpr	Logical AND for use in pattern expressions.
PatternEveryDistinctExpr	Every-Distinct construct for use in pattern expressions.
PatternEveryExpr	Pattern 'every' expression that controls the lifecycle of pattern sub-expressions.
PatternExprBase	Abstract base class for all pattern expressions.
PatternExprPlaceholder	For use in pattern expression as a placeholder to represent its child nodes.
PatternFilterExpr	Filter for use in pattern expressions.
PatternFollowedByExpr	Followed-by for use in pattern expressions.
PatternGuardExpr	Guard is the where timer-within pattern object for use in pattern expressions.
PatternMatchUntilExpr	Match-Until construct for use in pattern expressions.
PatternNotExpr	Not-expression for negating a pattern sub-expression for use in pattern expressions.
PatternObserverExpr	Pattern observer expression observes occurances such as timer-at (crontab) and timer-interval.
PatternOrExpr	Logical OR for use in pattern expressions.
Patterns	Convenience factory for creating PatternExpr instances, which represent pattern expression trees.
PatternStream	A stream of events that is generated by pattern matches.
PlugInProjectionExpression	Represents a plug-in aggregation function.
PreviousExpression	Previous function for obtaining property values of previous events.
PriorExpression	Expression representing the prior function.
ProjectedStream	Abstract base class for streams that can be projected via views providing data window, uniqueness or other projections or deriving further information from streams.
PropertyExistsExpression	Property-exists checks if a dynamic property exists.
PropertyValueExpression	Expression returning a property value.
PropertyValueExpressionPair	Pair of expressions with "equals" operator between.
RegExpExpression	Regular expression evaluates a "regexp" regular expression.
RelationalOpExpression	Comparison using one of the relational operators (=, !=, <, <=, >, >=, is, is not).
RowLimitClause	Specification object for a row limit.
SchemaColumnDesc	Descriptor for use in create-schema syntax to define property name and type of an event property.
ScriptExpression	Script-expression is external scripting language expression such as JavaScript, Groovy or MVEL, for example.
SelectClause	A select-clause consists of a list of selection elements (expressions, wildcard(s), stream wildcard and the like) and an optional stream selector.
SelectClauseExpression	Part of a select-clause to describe individual select-clause expressions.
SelectClauseStreamWildcard	For use in a select clause, this element in a select clause defines that for a given stream we want to select the underlying type.
SelectClauseWildcard	Represents a wildcard in the select-clause.
SingleRowMethodExpression	Generic single-row method call consists of a method name and parameters, possibly chained.
SQLStream	An SQL stream that polls via SQL for events via join.
StaticMethodExpression	Static method call consists of a class name and method name.
StddevProjectionExpression	Standard deviation of the (distinct) values returned by an expression.
Stream	An abstract base class for a named or unnamed stream.
StreamWildcardExpression	Represents "stream.*" in for example "mystream.*"
SubqueryExistsExpression	Exists-expression for a set of values returned by a lookup.
SubqueryExpression	Subquery-expression returns values returned by a lookup modelled by a further EPStatementObjectModel.
SubqueryInExpression	In-expression for a set of values returned by a lookup.
SubqueryQualifiedExpression	Exists-expression for a set of values returned by a lookup.
SumProjectionExpression	Sum of the (distinct) values returned by an expression.
TableAccessExpression	Table access expression.
TimePeriodExpression	Represent an expression
TypeOfExpression	Type-of expression return the type name, as a string value, of the events in the stream if passing a stream name or the fragment event type if passing a property name that results in a fragment event otherwise the class simple name of the expression result or null if the expression returns a null value.
UpdateClause	Specification for the update clause.
View	A view provides a projection upon a stream, such as a data window, grouping or unique.
WildcardExpression	Represents "*" in for example "last(*)"
WindowProjectionExpression	Represents the "window" aggregation function.

Enum Summary

Enum	Description
CreateIndexColumnType	Enumeration to represents the index type.
CreateSchemaClauseTypeDef	Represents a type definition for use with the create-schema syntax for creating a new event type.
ExpressionPrecedenceEnum	Precendence levels for expressions.
ForClauseKeyword	Keywords for use in the for-clause.
MatchRecogizePatternElementType	Enum for match recognize pattern atom types.
MatchRecognizeSkipClause	Skip clause enum for match recognize.
OutputLimitSelector	Selector for use in output rate limiting.
OutputLimitUnit	Unit for output rate limiting.
PatternExprPrecedenceEnum	Pattern precendences.
PreviousExpressionType	Previous function type.
ScheduleItemType	Type of schedule item.
StreamSelector	Enumeration for representing selection of the remove stream or the insert stream, or both.

Package com.espertech.esper.client.soda Description

This package defines the Esper statement object model.