org.wso2.siddhi.core.table

Class InMemoryTable

java.lang.Object

org.wso2.siddhi.core.table.Table

org.wso2.siddhi.core.table.InMemoryTable

All Implemented Interfaces:

FindableProcessor, Snapshotable, MemoryCalculable

public class InMemoryTable
extends Table
implements Snapshotable

In-memory event table implementation of SiddhiQL.

Constructor Summary

Constructors

Constructor and Description
InMemoryTable()

Method Summary

Modifier and Type	Method and Description
void	add(ComplexEventChunk<StreamEvent> addingEventChunk)
CompiledCondition	compileCondition(org.wso2.siddhi.query.api.expression.Expression condition, MatchingMetaInfoHolder matchingMetaInfoHolder, SiddhiAppContext siddhiAppContext, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String,Table> tableMap, String queryName) To construct a finder having the capability of finding events at the processor that corresponds to the incoming matchingEvent and the given matching expression logic.
CompiledUpdateSet	compileUpdateSet(org.wso2.siddhi.query.api.execution.query.output.stream.UpdateSet updateSet, MatchingMetaInfoHolder matchingMetaInfoHolder, SiddhiAppContext siddhiAppContext, List<VariableExpressionExecutor> variableExpressionExecutors, Map<String,Table> tableMap, String queryName) Builds the "compiled" set clause of an update query.
protected void	connect()
boolean	contains(StateEvent matchingEvent, CompiledCondition compiledCondition)
Map<String,Object>	currentState() Used to collect the serializable state of the processing element, that need to be persisted for the reconstructing the element to the same state on a different point of time
void	delete(ComplexEventChunk<StateEvent> deletingEventChunk, CompiledCondition compiledCondition)
protected void	destroy()
protected void	disconnect()
StreamEvent	find(CompiledCondition compiledCondition, StateEvent matchingEvent)
String	getElementId()
org.wso2.siddhi.query.api.definition.TableDefinition	getTableDefinition()
void	init(org.wso2.siddhi.query.api.definition.TableDefinition tableDefinition, StreamEventPool storeEventPool, StreamEventCloner storeEventCloner, ConfigReader configReader, SiddhiAppContext siddhiAppContext, RecordTableHandler recordTableHandler)
void	restoreState(Map<String,Object> state) Used to restore serialized state of the processing element, for reconstructing the element to the same state as if was on a previous point of time.
void	update(ComplexEventChunk<StateEvent> updatingEventChunk, CompiledCondition compiledCondition, CompiledUpdateSet compiledUpdateSet)
void	updateOrAdd(ComplexEventChunk<StateEvent> updateOrAddingEventChunk, CompiledCondition compiledCondition, CompiledUpdateSet compiledUpdateSet, AddingStreamEventExtractor addingStreamEventExtractor)

Methods inherited from class org.wso2.siddhi.core.table.Table

addEvents, connectWithRetry, containsEvent, deleteEvents, find, getHandler, initTable, shutdown, updateEvents, updateOrAddEvents

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InMemoryTable

public InMemoryTable()

Method Detail

init

public void init(org.wso2.siddhi.query.api.definition.TableDefinition tableDefinition,
                 StreamEventPool storeEventPool,
                 StreamEventCloner storeEventCloner,
                 ConfigReader configReader,
                 SiddhiAppContext siddhiAppContext,
                 RecordTableHandler recordTableHandler)

Specified by:

init in class Table

getTableDefinition

public org.wso2.siddhi.query.api.definition.TableDefinition getTableDefinition()

Overrides:

getTableDefinition in class Table

add

public void add(ComplexEventChunk<StreamEvent> addingEventChunk)

Specified by:

add in class Table

delete

public void delete(ComplexEventChunk<StateEvent> deletingEventChunk,
                   CompiledCondition compiledCondition)

Specified by:

delete in class Table

update

public void update(ComplexEventChunk<StateEvent> updatingEventChunk,
                   CompiledCondition compiledCondition,
                   CompiledUpdateSet compiledUpdateSet)

Specified by:

update in class Table

updateOrAdd

public void updateOrAdd(ComplexEventChunk<StateEvent> updateOrAddingEventChunk,
                        CompiledCondition compiledCondition,
                        CompiledUpdateSet compiledUpdateSet,
                        AddingStreamEventExtractor addingStreamEventExtractor)

Specified by:

updateOrAdd in class Table

contains

public boolean contains(StateEvent matchingEvent,
                        CompiledCondition compiledCondition)

Specified by:

contains in class Table

connect

protected void connect()
                throws ConnectionUnavailableException

Specified by:

connect in class Table

Throws:

ConnectionUnavailableException

disconnect

protected void disconnect()

Specified by:

disconnect in class Table

destroy

protected void destroy()

Specified by:

destroy in class Table

find

public StreamEvent find(CompiledCondition compiledCondition,
                        StateEvent matchingEvent)

Specified by:

find in class Table

compileCondition

public CompiledCondition compileCondition(org.wso2.siddhi.query.api.expression.Expression condition,
                                          MatchingMetaInfoHolder matchingMetaInfoHolder,
                                          SiddhiAppContext siddhiAppContext,
                                          List<VariableExpressionExecutor> variableExpressionExecutors,
                                          Map<String,Table> tableMap,
                                          String queryName)

Description copied from interface: FindableProcessor

To construct a finder having the capability of finding events at the processor that corresponds to the incoming matchingEvent and the given matching expression logic.

Specified by:

compileCondition in interface FindableProcessor

Parameters:

condition - the matching condition

matchingMetaInfoHolder - the meta structure of the incoming matchingEvent

siddhiAppContext - current siddhi app context

variableExpressionExecutors - the list of variable ExpressionExecutors already created

tableMap - map of event tables

queryName - query name of findable processor belongs to.

Returns:

compiled Condition having the capability of matching events against the incoming matchingEvent

compileUpdateSet

public CompiledUpdateSet compileUpdateSet(org.wso2.siddhi.query.api.execution.query.output.stream.UpdateSet updateSet,
                                          MatchingMetaInfoHolder matchingMetaInfoHolder,
                                          SiddhiAppContext siddhiAppContext,
                                          List<VariableExpressionExecutor> variableExpressionExecutors,
                                          Map<String,Table> tableMap,
                                          String queryName)

Description copied from class: Table

Builds the "compiled" set clause of an update query. Here, all the pre-processing that can be done prior to receiving the update event is done, so that such pre-processing work will not be done at each update-event-arrival.

Specified by:

compileUpdateSet in class Table

Parameters:

updateSet - the set of assignment expressions, each containing the table column to be updated and the expression to be assigned.

matchingMetaInfoHolder - the meta structure of the incoming matchingEvent

siddhiAppContext - current siddhi app context

variableExpressionExecutors - the list of variable ExpressionExecutors already created

tableMap - map of event tables

queryName - query name to which the update statement belongs.

Returns:

CompiledUpdateSet

currentState

public Map<String,Object> currentState()

Description copied from interface: Snapshotable

Used to collect the serializable state of the processing element, that need to be persisted for the reconstructing the element to the same state on a different point of time

Specified by:

currentState in interface Snapshotable

Returns:

stateful objects of the processing element as an array

restoreState

public void restoreState(Map<String,Object> state)

Description copied from interface: Snapshotable

Used to restore serialized state of the processing element, for reconstructing the element to the same state as if was on a previous point of time.

Specified by:

restoreState in interface Snapshotable

Parameters:

state - the stateful objects of the element as an array on the same order provided by currentState().

getElementId

public String getElementId()

Specified by:

getElementId in interface Snapshotable