org.wso2.siddhi.core.table

Class Table

java.lang.Object

org.wso2.siddhi.core.table.Table

All Implemented Interfaces:

FindableProcessor

Direct Known Subclasses:

AbstractRecordTable, InMemoryTable

public abstract class Table
extends Object
implements FindableProcessor

Interface class to represent Tables in Siddhi. There are multiple implementations. Ex: InMemoryTable. Table will support basic operations of add, delete, update, update or add and contains. *

Field Summary

Fields

Modifier and Type	Field and Description
protected org.wso2.siddhi.query.api.definition.TableDefinition	tableDefinition

Constructor Summary

Constructors

Constructor and Description
Table()

Method Summary

Modifier and Type	Method and Description
protected abstract void	add(ComplexEventChunk<StreamEvent> addingEventChunk)
void	addEvents(ComplexEventChunk<StreamEvent> addingEventChunk)
abstract 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 abstract void	connect()
void	connectWithRetry()
protected abstract boolean	contains(StateEvent matchingEvent, CompiledCondition compiledCondition)
boolean	containsEvent(StateEvent matchingEvent, CompiledCondition compiledCondition)
protected abstract void	delete(ComplexEventChunk<StateEvent> deletingEventChunk, CompiledCondition compiledCondition)
void	deleteEvents(ComplexEventChunk<StateEvent> deletingEventChunk, CompiledCondition compiledCondition)
protected abstract void	destroy()
protected abstract void	disconnect()
protected abstract StreamEvent	find(CompiledCondition compiledCondition, StateEvent matchingEvent)
StreamEvent	find(StateEvent matchingEvent, CompiledCondition compiledCondition) To find events from the processor event pool, that the matches the matchingEvent based on finder logic.
RecordTableHandler	getHandler()
org.wso2.siddhi.query.api.definition.TableDefinition	getTableDefinition()
protected abstract void	init(org.wso2.siddhi.query.api.definition.TableDefinition tableDefinition, StreamEventPool storeEventPool, StreamEventCloner storeEventCloner, ConfigReader configReader, SiddhiAppContext siddhiAppContext, RecordTableHandler recordTableHandler)
void	initTable(org.wso2.siddhi.query.api.definition.TableDefinition tableDefinition, StreamEventPool storeEventPool, StreamEventCloner storeEventCloner, ConfigReader configReader, SiddhiAppContext siddhiAppContext, RecordTableHandler recordTableHandler)
void	shutdown()
protected abstract void	update(ComplexEventChunk<StateEvent> updatingEventChunk, CompiledCondition compiledCondition, CompiledUpdateSet compiledUpdateSet)
void	updateEvents(ComplexEventChunk<StateEvent> updatingEventChunk, CompiledCondition compiledCondition, CompiledUpdateSet compiledUpdateSet)
protected abstract void	updateOrAdd(ComplexEventChunk<StateEvent> updateOrAddingEventChunk, CompiledCondition compiledCondition, CompiledUpdateSet compiledUpdateSet, AddingStreamEventExtractor addingStreamEventExtractor)
void	updateOrAddEvents(ComplexEventChunk<StateEvent> updateOrAddingEventChunk, CompiledCondition compiledCondition, CompiledUpdateSet compiledUpdateSet, AddingStreamEventExtractor addingStreamEventExtractor)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.wso2.siddhi.core.query.processor.stream.window.FindableProcessor

compileCondition

Field Detail

tableDefinition

protected org.wso2.siddhi.query.api.definition.TableDefinition tableDefinition

Constructor Detail

Table

public Table()

Method Detail

initTable

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

init

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

getTableDefinition

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

addEvents

public void addEvents(ComplexEventChunk<StreamEvent> addingEventChunk)

add

protected abstract void add(ComplexEventChunk<StreamEvent> addingEventChunk)
                     throws ConnectionUnavailableException

Throws:

ConnectionUnavailableException

find

public StreamEvent find(StateEvent matchingEvent,
                        CompiledCondition compiledCondition)

Description copied from interface: FindableProcessor

To find events from the processor event pool, that the matches the matchingEvent based on finder logic.

Specified by:

find in interface FindableProcessor

Parameters:

matchingEvent - the event to be matched with the events at the processor

compiledCondition - the execution element responsible for matching the corresponding events that matches the matchingEvent based on pool of events at Processor

Returns:

the matched events

find

protected abstract StreamEvent find(CompiledCondition compiledCondition,
                                    StateEvent matchingEvent)
                             throws ConnectionUnavailableException

Throws:

ConnectionUnavailableException

deleteEvents

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

delete

protected abstract void delete(ComplexEventChunk<StateEvent> deletingEventChunk,
                               CompiledCondition compiledCondition)
                        throws ConnectionUnavailableException

Throws:

ConnectionUnavailableException

updateEvents

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

update

protected abstract void update(ComplexEventChunk<StateEvent> updatingEventChunk,
                               CompiledCondition compiledCondition,
                               CompiledUpdateSet compiledUpdateSet)
                        throws ConnectionUnavailableException

Throws:

ConnectionUnavailableException

updateOrAddEvents

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

updateOrAdd

protected abstract void updateOrAdd(ComplexEventChunk<StateEvent> updateOrAddingEventChunk,
                                    CompiledCondition compiledCondition,
                                    CompiledUpdateSet compiledUpdateSet,
                                    AddingStreamEventExtractor addingStreamEventExtractor)
                             throws ConnectionUnavailableException

Throws:

ConnectionUnavailableException

containsEvent

public boolean containsEvent(StateEvent matchingEvent,
                             CompiledCondition compiledCondition)

contains

protected abstract boolean contains(StateEvent matchingEvent,
                                    CompiledCondition compiledCondition)
                             throws ConnectionUnavailableException

Throws:

ConnectionUnavailableException

connectWithRetry

public void connectWithRetry()

compileUpdateSet

public abstract 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. 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.

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:

connect

protected abstract void connect()
                         throws ConnectionUnavailableException

Throws:

ConnectionUnavailableException

disconnect

protected abstract void disconnect()

destroy

protected abstract void destroy()

getHandler

public RecordTableHandler getHandler()

shutdown

public void shutdown()