private TableOnMergeActionIns setupInsert(
TableMetadata tableMetadata,
InternalEventRouter internalEventRouter,
int selectClauseNumber,
OnTriggerMergeActionInsert desc,
EventType triggeringEventType,
String triggeringStreamName,
StatementContext statementContext)
throws ExprValidationException {
// Compile insert-into info
String streamName =
desc.getOptionalStreamName() != null
? desc.getOptionalStreamName()
: tableMetadata.getTableName();
InsertIntoDesc insertIntoDesc = InsertIntoDesc.fromColumns(streamName, desc.getColumns());
EventType insertIntoTargetType =
streamName.equals(tableMetadata.getTableName())
? tableMetadata.getInternalEventType()
: null;
// rewrite any wildcards to use "stream.wildcard"
if (triggeringStreamName == null) {
triggeringStreamName = UuidGenerator.generate();
}
List<SelectClauseElementCompiled> selectNoWildcard =
NamedWindowOnMergeHelper.compileSelectNoWildcard(
triggeringStreamName, desc.getSelectClauseCompiled());
// Set up event types for select-clause evaluation: The first type does not contain anything as
// its the named window row which is not present for insert
EventType dummyTypeNoProperties =
new MapEventType(
EventTypeMetadata.createAnonymous("merge_named_window_insert"),
"merge_named_window_insert",
0,
null,
Collections.<String, Object>emptyMap(),
null,
null,
null);
EventType[] eventTypes = new EventType[] {dummyTypeNoProperties, triggeringEventType};
String[] streamNames = new String[] {UuidGenerator.generate(), triggeringStreamName};
StreamTypeService streamTypeService =
new StreamTypeServiceImpl(
eventTypes, streamNames, new boolean[1], statementContext.getEngineURI(), false);
// Get select expr processor
SelectExprEventTypeRegistry selectExprEventTypeRegistry =
new SelectExprEventTypeRegistry(
statementContext.getStatementName(), statementContext.getStatementEventTypeRef());
ExprEvaluatorContextStatement exprEvaluatorContext =
new ExprEvaluatorContextStatement(statementContext, false);
SelectExprProcessor insertHelper =
SelectExprProcessorFactory.getProcessor(
Collections.singleton(selectClauseNumber),
selectNoWildcard.toArray(new SelectClauseElementCompiled[selectNoWildcard.size()]),
false,
insertIntoDesc,
insertIntoTargetType,
null,
streamTypeService,
statementContext.getEventAdapterService(),
statementContext.getStatementResultService(),
statementContext.getValueAddEventService(),
selectExprEventTypeRegistry,
statementContext.getMethodResolutionService(),
exprEvaluatorContext,
statementContext.getVariableService(),
statementContext.getTableService(),
statementContext.getTimeProvider(),
statementContext.getEngineURI(),
statementContext.getStatementId(),
statementContext.getStatementName(),
statementContext.getAnnotations(),
statementContext.getContextDescriptor(),
statementContext.getConfigSnapshot(),
null,
statementContext.getNamedWindowService(),
null);
ExprEvaluator filterEval =
desc.getOptionalWhereClause() == null
? null
: desc.getOptionalWhereClause().getExprEvaluator();
InternalEventRouter routerToUser =
streamName.equals(tableMetadata.getTableName()) ? null : internalEventRouter;
boolean audit = AuditEnum.INSERT.getAudit(statementContext.getAnnotations()) != null;
return new TableOnMergeActionIns(
filterEval,
insertHelper,
routerToUser,
statementContext.getEpStatementHandle(),
statementContext.getInternalEventEngineRouteDest(),
audit,
tableMetadata.getRowFactory());
}
public static NamedWindowOnExprFactory make(
EventType namedWindowEventType,
String namedWindowName,
String namedWindowAlias,
OnTriggerDesc onTriggerDesc,
EventType filterEventType,
String filterStreamName,
boolean addToFront,
InternalEventRouter internalEventRouter,
EventType outputEventType,
StatementContext statementContext,
StatementMetricHandle createNamedWindowMetricsHandle,
boolean isDistinct)
throws ExprValidationException {
if (onTriggerDesc.getOnTriggerType() == OnTriggerType.ON_DELETE) {
return new NamedWindowOnDeleteViewFactory(
namedWindowEventType, statementContext.getStatementResultService());
} else if (onTriggerDesc.getOnTriggerType() == OnTriggerType.ON_SELECT) {
EventBeanReader eventBeanReader = null;
if (isDistinct) {
if (outputEventType instanceof EventTypeSPI) {
eventBeanReader = ((EventTypeSPI) outputEventType).getReader();
}
if (eventBeanReader == null) {
eventBeanReader = new EventBeanReaderDefaultImpl(outputEventType);
}
}
OnTriggerWindowDesc windowDesc = (OnTriggerWindowDesc) onTriggerDesc;
return new NamedWindowOnSelectViewFactory(
namedWindowEventType,
internalEventRouter,
addToFront,
statementContext.getEpStatementHandle(),
eventBeanReader,
isDistinct,
outputEventType,
statementContext.getStatementResultService(),
statementContext.getInternalEventEngineRouteDest(),
windowDesc.isDeleteAndSelect());
} else if (onTriggerDesc.getOnTriggerType() == OnTriggerType.ON_UPDATE) {
OnTriggerWindowUpdateDesc updateDesc = (OnTriggerWindowUpdateDesc) onTriggerDesc;
NamedWindowUpdateHelper updateHelper =
NamedWindowUpdateHelper.make(
namedWindowName,
(EventTypeSPI) namedWindowEventType,
updateDesc.getAssignments(),
namedWindowAlias);
return new NamedWindowOnUpdateViewFactory(
namedWindowEventType, statementContext.getStatementResultService(), updateHelper);
} else if (onTriggerDesc.getOnTriggerType() == OnTriggerType.ON_MERGE) {
OnTriggerMergeDesc onMergeTriggerDesc = (OnTriggerMergeDesc) onTriggerDesc;
NamedWindowOnMergeHelper onMergeHelper =
new NamedWindowOnMergeHelper(
statementContext,
onMergeTriggerDesc,
filterEventType,
filterStreamName,
internalEventRouter,
namedWindowName,
(EventTypeSPI) namedWindowEventType);
return new NamedWindowOnMergeViewFactory(
namedWindowEventType,
onMergeHelper,
statementContext.getStatementResultService(),
createNamedWindowMetricsHandle,
statementContext.getMetricReportingService());
} else {
throw new IllegalStateException("Unknown trigger type " + onTriggerDesc.getOnTriggerType());
}
}