org.eclipse.viatra.cep.core.engine.runtime

Class LatestEventMatch

java.lang.Object

org.eclipse.viatra.query.runtime.api.impl.BasePatternMatch

org.eclipse.viatra.cep.core.engine.runtime.LatestEventMatch

All Implemented Interfaces:

java.lang.Cloneable, IPatternMatch

public abstract class LatestEventMatch
extends BasePatternMatch

Pattern-specific match representation of the org.eclipse.viatra.cep.core.engine.runtime.latestEvent pattern, to be used in conjunction with LatestEventMatcher.

Class fields correspond to parameters of the pattern. Fields with value null are considered unassigned. Each instance is a (possibly partial) substitution of pattern parameters, usable to represent a match of the pattern in the result of a query, or to specify the bound (fixed) input parameters when issuing a query.

See Also:

LatestEventMatcher, LatestEventProcessor

Method Summary

Modifier and Type	Method and Description
boolean	equals(java.lang.Object obj)
java.lang.Object	get(java.lang.String parameterName) Returns the value of the parameter with the given name, or null if name is invalid.
Event	getEvent()
int	hashCode()
static LatestEventMatch	newEmptyMatch() Returns an empty, mutable match.
static LatestEventMatch	newMatch(Event pEvent) Returns a new (partial) match.
static LatestEventMatch	newMutableMatch(Event pEvent) Returns a mutable (partial) match.
java.util.List<java.lang.String>	parameterNames() Returns the list of symbolic parameter names.
java.lang.String	patternName() Identifies the name of the pattern for which this is a match.
java.lang.String	prettyPrint() Prints the list of parameter-value pairs.
boolean	set(java.lang.String parameterName, java.lang.Object newValue) Sets the parameter with the given name to the given value.
void	setEvent(Event pEvent)
LatestEventQuerySpecification	specification()
java.lang.Object[]	toArray() Converts the match to an array representation, with each pattern parameter at their respective position.
LatestEventMatch	toImmutable() Takes an immutable snapshot of this match.

Methods inherited from class org.eclipse.viatra.query.runtime.api.impl.BasePatternMatch

get, isCompatibleWith, makeImmutableList, prettyPrintFeature, prettyPrintValue, set, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.viatra.query.runtime.api.IPatternMatch

isMutable

Method Detail

get

public java.lang.Object get(java.lang.String parameterName)

Description copied from interface: IPatternMatch

Returns the value of the parameter with the given name, or null if name is invalid.

getEvent

public Event getEvent()

set

public boolean set(java.lang.String parameterName,
                   java.lang.Object newValue)

Description copied from interface: IPatternMatch

Sets the parameter with the given name to the given value.

Works only if match is mutable. See IPatternMatch.isMutable().

setEvent

public void setEvent(Event pEvent)

patternName

public java.lang.String patternName()

Description copied from interface: IPatternMatch

Identifies the name of the pattern for which this is a match.

Specified by:

patternName in interface IPatternMatch

Overrides:

patternName in class BasePatternMatch

parameterNames

public java.util.List<java.lang.String> parameterNames()

Description copied from interface: IPatternMatch

Returns the list of symbolic parameter names.

Specified by:

parameterNames in interface IPatternMatch

Overrides:

parameterNames in class BasePatternMatch

toArray

public java.lang.Object[] toArray()

Description copied from interface: IPatternMatch

Converts the match to an array representation, with each pattern parameter at their respective position. In case of a partial match, unsubstituted parameters will be represented as null elements in the array.

Returns:

a newly constructed array containing each parameter substitution of the match in order.

toImmutable

public LatestEventMatch toImmutable()

Description copied from interface: IPatternMatch

Takes an immutable snapshot of this match.

Returns:

the match itself in case of immutable matches, an immutable copy in case of mutable ones.

prettyPrint

public java.lang.String prettyPrint()

Description copied from interface: IPatternMatch

Prints the list of parameter-value pairs.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

specification

public LatestEventQuerySpecification specification()

Returns:

the pattern for which this is a match.

newEmptyMatch

public static LatestEventMatch newEmptyMatch()

Returns an empty, mutable match. Fields of the mutable match can be filled to create a partial match, usable as matcher input.

Returns:

the empty match.

newMutableMatch

public static LatestEventMatch newMutableMatch(Event pEvent)

Returns a mutable (partial) match. Fields of the mutable match can be filled to create a partial match, usable as matcher input.

Parameters:

pEvent - the fixed value of pattern parameter event, or null if not bound.

Returns:

the new, mutable (partial) match object.

newMatch

public static LatestEventMatch newMatch(Event pEvent)

Returns a new (partial) match. This can be used e.g. to call the matcher with a partial match.

The returned match will be immutable. Use newEmptyMatch() to obtain a mutable match object.

Parameters:

pEvent - the fixed value of pattern parameter event, or null if not bound.

Returns:

the (partial) match object.