private static bool IsPolling(StreamSpecCompiled streamSpec)
{
return
streamSpec is MethodStreamSpec ||
streamSpec is DBStatementStreamSpec ||
streamSpec is TableQueryStreamSpec;
}
public static FireAndForgetProcessor ValidateResolveProcessor(StreamSpecCompiled streamSpec, EPServicesContext services)
{
// resolve processor
string processorName;
if (streamSpec is NamedWindowConsumerStreamSpec)
{
NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec)streamSpec;
processorName = namedSpec.WindowName;
}
else
{
TableQueryStreamSpec tableSpec = (TableQueryStreamSpec)streamSpec;
processorName = tableSpec.TableName;
}
// get processor instance
TableMetadata tableMetadata = services.TableService.GetTableMetadata(processorName);
if (tableMetadata != null)
{
return(new FireAndForgetProcessorTable(services.TableService, tableMetadata));
}
else
{
NamedWindowProcessor nwprocessor = services.NamedWindowService.GetProcessor(processorName);
if (nwprocessor == null)
{
throw new ExprValidationException("A table or named window by name '" + processorName + "' does not exist");
}
return(new FireAndForgetProcessorNamedWindow(nwprocessor));
}
}
public StreamSpecCompiledDesc(
StreamSpecCompiled streamSpecCompiled,
IList<StmtClassForgeableFactory> additionalForgeables)
{
this.streamSpecCompiled = streamSpecCompiled;
this.additionalForgeables = additionalForgeables;
}
public SubSelectActivationHolder(int streamNumber, EventType viewableType, ViewFactoryChain viewFactoryChain, ViewableActivator activator, StreamSpecCompiled streamSpecCompiled)
{
StreamNumber = streamNumber;
ViewableType = viewableType;
ViewFactoryChain = viewFactoryChain;
Activator = activator;
StreamSpecCompiled = streamSpecCompiled;
}
private static void ValidateNoViews(StreamSpecCompiled streamSpec, string conceptName)
{
if (streamSpec.ViewSpecs.Length > 0)
{
throw new ExprValidationException(conceptName + " joins do not allow views onto the data, view '"
+ streamSpec.ViewSpecs[0].ObjectNamespace + ':' + streamSpec.ViewSpecs[0].ObjectName + "' is not valid in this context");
}
}
public static FireAndForgetProcessorForge ValidateResolveProcessor(StreamSpecCompiled streamSpec)
{
if (streamSpec is NamedWindowConsumerStreamSpec) {
NamedWindowMetaData nwdetail = ((NamedWindowConsumerStreamSpec) streamSpec).NamedWindow;
return new FireAndForgetProcessorNamedWindowForge(nwdetail);
}
TableQueryStreamSpec tableSpec = (TableQueryStreamSpec) streamSpec;
return new FireAndForgetProcessorTableForge(tableSpec.Table);
}
public SubSelectActivationPlan(
EventType viewableType,
IList<ViewFactoryForge> viewForges,
ViewableActivatorForge activator,
StreamSpecCompiled streamSpecCompiled)
{
ViewableType = viewableType;
ViewForges = viewForges;
Activator = activator;
StreamSpecCompiled = streamSpecCompiled;
}
public OnTriggerWindowPlan(
OnTriggerWindowDesc onTriggerDesc,
string contextName,
OnTriggerActivatorDesc activatorResult,
StreamSelector? optionalStreamSelector,
IDictionary<ExprSubselectNode, SubSelectActivationPlan> subselectActivation,
StreamSpecCompiled streamSpec)
{
OnTriggerDesc = onTriggerDesc;
ContextName = contextName;
ActivatorResult = activatorResult;
OptionalStreamSelector = optionalStreamSelector;
SubselectActivation = subselectActivation;
StreamSpec = streamSpec;
}
private static DataFlowActivationResult HandleDataflowActivation(
ViewFactoryForgeArgs args,
StreamSpecCompiled streamSpec)
{
if (!(streamSpec is FilterStreamSpecCompiled)) {
throw new ExprValidationException(
"Dataflow operator only allows filters for event types and does not allow tables, named windows or patterns");
}
var filterStreamSpec = (FilterStreamSpecCompiled) streamSpec;
var filterSpecCompiled = filterStreamSpec.FilterSpecCompiled;
var eventType = filterSpecCompiled.ResultEventType;
var typeName = filterStreamSpec.FilterSpecCompiled.FilterForEventTypeName;
var views = ViewFactoryForgeUtil.CreateForges(streamSpec.ViewSpecs, args, eventType);
var viewableActivator = new ViewableActivatorDataFlowForge(eventType);
return new DataFlowActivationResult(eventType, typeName, viewableActivator, views);
}
protected internal static void ValidateFAFQuery(StatementSpecCompiled statementSpec)
{
for (int i = 0; i < statementSpec.StreamSpecs.Length; i++) {
StreamSpecCompiled streamSpec = statementSpec.StreamSpecs[i];
if (!(streamSpec is NamedWindowConsumerStreamSpec || streamSpec is TableQueryStreamSpec)) {
throw new ExprValidationException(
"On-demand queries require tables or named windows and do not allow event streams or patterns");
}
if (streamSpec.ViewSpecs.Length != 0) {
throw new ExprValidationException("Views are not a supported feature of on-demand queries");
}
}
if (statementSpec.Raw.OutputLimitSpec != null) {
throw new ExprValidationException(
"Output rate limiting is not a supported feature of on-demand queries");
}
}
internal static bool DetermineSubquerySameStream(StatementSpecCompiled statementSpec, FilterStreamSpecCompiled filterStreamSpec)
{
foreach (ExprSubselectNode subselect in statementSpec.SubSelectExpressions)
{
StreamSpecCompiled streamSpec = subselect.StatementSpecCompiled.StreamSpecs[0];
if (!(streamSpec is FilterStreamSpecCompiled))
{
continue;
}
FilterStreamSpecCompiled filterStream = (FilterStreamSpecCompiled)streamSpec;
EventType typeSubselect = filterStream.FilterSpec.FilterForEventType;
EventType typeFiltered = filterStreamSpec.FilterSpec.FilterForEventType;
if (EventTypeUtility.IsTypeOrSubTypeOf(typeSubselect, typeFiltered) || EventTypeUtility.IsTypeOrSubTypeOf(typeFiltered, typeSubselect))
{
return(true);
}
}
return(false);
}
public static OnTriggerPlan HandleSplitStream(
string aiFactoryProviderClassName,
CodegenNamespaceScope namespaceScope,
string classPostfix,
OnTriggerSplitStreamDesc desc,
StreamSpecCompiled streamSpec,
OnTriggerActivatorDesc activatorResult,
IDictionary<ExprSubselectNode, SubSelectActivationPlan> subselectActivation,
StatementBaseInfo @base,
StatementCompileTimeServices services)
{
var raw = @base.StatementSpec.Raw;
if (raw.InsertIntoDesc == null) {
throw new ExprValidationException(
"Required insert-into clause is not provided, the clause is required for split-stream syntax");
}
if (raw.GroupByExpressions != null && raw.GroupByExpressions.Count > 0 ||
raw.HavingClause != null ||
raw.OrderByList.Count > 0) {
throw new ExprValidationException(
"A group-by clause, having-clause or order-by clause is not allowed for the split stream syntax");
}
var streamName = streamSpec.OptionalStreamName;
if (streamName == null) {
streamName = "stream_0";
}
StreamTypeService typeServiceTrigger = new StreamTypeServiceImpl(
new[] {activatorResult.ActivatorResultEventType},
new[] {streamName},
new[] {true},
false,
false);
// materialize sub-select views
var subselectForges = SubSelectHelperForgePlanner.PlanSubSelect(
@base,
subselectActivation,
new[] {streamSpec.OptionalStreamName},
new[] {activatorResult.ActivatorResultEventType},
new[] {activatorResult.TriggerEventTypeName},
services);
// compile top-level split
var items = new OnSplitItemForge[desc.SplitStreams.Count + 1];
items[0] = OnSplitValidate(
typeServiceTrigger,
@base.StatementSpec,
@base.ContextPropertyRegistry,
null,
@base.StatementRawInfo,
services);
// compile each additional split
var index = 1;
foreach (var splits in desc.SplitStreams) {
var splitSpec = new StatementSpecCompiled();
splitSpec.Raw.InsertIntoDesc = splits.InsertInto;
splitSpec.SelectClauseCompiled = CompileSelectAllowSubselect(splits.SelectClause);
splitSpec.Raw.WhereClause = splits.WhereClause;
PropertyEvaluatorForge optionalPropertyEvaluator = null;
StreamTypeService typeServiceProperty;
if (splits.FromClause != null) {
optionalPropertyEvaluator = PropertyEvaluatorForgeFactory.MakeEvaluator(
splits.FromClause.PropertyEvalSpec,
activatorResult.ActivatorResultEventType,
streamName,
@base.StatementRawInfo,
services);
typeServiceProperty = new StreamTypeServiceImpl(
new[] {optionalPropertyEvaluator.FragmentEventType},
new[] {splits.FromClause.OptionalStreamName},
new[] {true},
false,
false);
}
else {
typeServiceProperty = typeServiceTrigger;
}
items[index] = OnSplitValidate(
typeServiceProperty,
splitSpec,
@base.ContextPropertyRegistry,
optionalPropertyEvaluator,
@base.StatementRawInfo,
services);
index++;
}
// handle result set processor classes
IList<StmtClassForgable> forgables = new List<StmtClassForgable>();
for (var i = 0; i < items.Length; i++) {
var classNameRSP = CodeGenerationIDGenerator.GenerateClassNameSimple(
typeof(ResultSetProcessorFactoryProvider),
classPostfix + "_" + i);
forgables.Add(
new StmtClassForgableRSPFactoryProvider(
classNameRSP,
items[i].ResultSetProcessorDesc,
namespaceScope,
@base.StatementRawInfo));
items[i].ResultSetProcessorClassName = classNameRSP;
}
// plan table access
var tableAccessForges = ExprTableEvalHelperPlan.PlanTableAccess(@base.StatementSpec.TableAccessNodes);
// build forge
var splitStreamForge = new StatementAgentInstanceFactoryOnTriggerSplitStreamForge(
activatorResult.Activator,
activatorResult.ActivatorResultEventType,
subselectForges,
tableAccessForges,
items,
desc.IsFirst);
var triggerForge = new StmtClassForgableAIFactoryProviderOnTrigger(
aiFactoryProviderClassName,
namespaceScope,
splitStreamForge);
return new OnTriggerPlan(triggerForge, forgables, new SelectSubscriberDescriptor());
}
public static OnTriggerPlanValidationResult ValidateOnTriggerPlan(
EventType namedWindowOrTableType,
OnTriggerWindowDesc onTriggerDesc,
StreamSpecCompiled streamSpec,
OnTriggerActivatorDesc activatorResult,
IDictionary<ExprSubselectNode, SubSelectActivationPlan> subselectActivation,
StatementBaseInfo @base,
StatementCompileTimeServices services)
{
var zeroStreamAliasName = onTriggerDesc.OptionalAsName;
if (zeroStreamAliasName == null) {
zeroStreamAliasName = "stream_0";
}
var streamName = streamSpec.OptionalStreamName;
if (streamName == null) {
streamName = "stream_1";
}
var namedWindowTypeName = onTriggerDesc.WindowName;
// Materialize sub-select views
// 0 - named window stream
// 1 - arriving stream
// 2 - initial value before update
string[] subselectStreamNames = {zeroStreamAliasName, streamSpec.OptionalStreamName};
EventType[] subselectEventTypes = {namedWindowOrTableType, activatorResult.ActivatorResultEventType};
string[] subselectEventTypeNames = {namedWindowTypeName, activatorResult.TriggerEventTypeName};
var subselectForges = SubSelectHelperForgePlanner.PlanSubSelect(
@base,
subselectActivation,
subselectStreamNames,
subselectEventTypes,
subselectEventTypeNames,
services);
var typeService = new StreamTypeServiceImpl(
new[] {namedWindowOrTableType, activatorResult.ActivatorResultEventType},
new[] {zeroStreamAliasName, streamName},
new[] {false, true},
true,
false);
// allow "initial" as a prefix to properties
StreamTypeServiceImpl assignmentTypeService;
if (zeroStreamAliasName.Equals(INITIAL_VALUE_STREAM_NAME) || streamName.Equals(INITIAL_VALUE_STREAM_NAME)) {
assignmentTypeService = typeService;
}
else {
assignmentTypeService = new StreamTypeServiceImpl(
new[] {namedWindowOrTableType, activatorResult.ActivatorResultEventType, namedWindowOrTableType},
new[] {zeroStreamAliasName, streamName, INITIAL_VALUE_STREAM_NAME},
new[] {false, true, true},
false,
false);
assignmentTypeService.IsStreamZeroUnambigous = true;
}
if (onTriggerDesc is OnTriggerWindowUpdateDesc) {
var updateDesc = (OnTriggerWindowUpdateDesc) onTriggerDesc;
var validationContext = new ExprValidationContextBuilder(
assignmentTypeService,
@base.StatementRawInfo,
services)
.WithAllowBindingConsumption(true)
.Build();
foreach (var assignment in updateDesc.Assignments) {
var validated = ExprNodeUtilityValidate.GetValidatedAssignment(assignment, validationContext);
assignment.Expression = validated;
EPStatementStartMethodHelperValidate.ValidateNoAggregations(
validated,
"Aggregation functions may not be used within an on-update-clause");
}
}
if (onTriggerDesc is OnTriggerMergeDesc) {
var mergeDesc = (OnTriggerMergeDesc) onTriggerDesc;
ValidateMergeDesc(
mergeDesc,
namedWindowOrTableType,
zeroStreamAliasName,
activatorResult.ActivatorResultEventType,
streamName,
@base.StatementRawInfo,
services);
}
// validate join expression
var validatedJoin = ValidateJoinNamedWindow(
ExprNodeOrigin.WHERE,
@base.StatementSpec.Raw.WhereClause,
namedWindowOrTableType,
zeroStreamAliasName,
namedWindowTypeName,
activatorResult.ActivatorResultEventType,
streamName,
activatorResult.TriggerEventTypeName,
null,
@base.StatementRawInfo,
services);
// validate filter, output rate limiting
EPStatementStartMethodHelperValidate.ValidateNodes(
@base.StatementSpec.Raw,
typeService,
null,
@base.StatementRawInfo,
services);
// Construct a processor for results; for use in on-select to process selection results
// Use a wildcard select if the select-clause is empty, such as for on-delete.
// For on-select the select clause is not empty.
if (@base.StatementSpec.SelectClauseCompiled.SelectExprList.Length == 0) {
@base.StatementSpec.SelectClauseCompiled.WithSelectExprList(new SelectClauseElementWildcard());
}
var resultSetProcessorPrototype = ResultSetProcessorFactoryFactory.GetProcessorPrototype(
new ResultSetSpec(@base.StatementSpec),
typeService,
null,
new bool[0],
true,
@base.ContextPropertyRegistry,
false,
true,
@base.StatementRawInfo,
services);
// plan table access
var tableAccessForges = ExprTableEvalHelperPlan.PlanTableAccess(@base.StatementSpec.TableAccessNodes);
return new OnTriggerPlanValidationResult(
subselectForges,
tableAccessForges,
resultSetProcessorPrototype,
validatedJoin,
zeroStreamAliasName);
}
public FAFQueryMethodIUDBaseForge(
StatementSpecCompiled spec,
Compilable compilable,
StatementRawInfo statementRawInfo,
StatementCompileTimeServices services)
{
this.annotations = spec.Annotations;
this.hasTableAccess = spec.Raw.IntoTableSpec != null ||
(spec.TableAccessNodes != null && spec.TableAccessNodes.Count > 0);
if (spec.Raw.InsertIntoDesc != null &&
services.TableCompileTimeResolver.Resolve(spec.Raw.InsertIntoDesc.EventTypeName) != null) {
hasTableAccess = true;
}
if (spec.Raw.FireAndForgetSpec is FireAndForgetSpecUpdate ||
spec.Raw.FireAndForgetSpec is FireAndForgetSpecDelete) {
hasTableAccess |= spec.StreamSpecs[0] is TableQueryStreamSpec;
}
hasTableAccess |= StatementLifecycleSvcUtil.IsSubqueryWithTable(
spec.SubselectNodes, services.TableCompileTimeResolver);
// validate general FAF criteria
FAFQueryMethodHelper.ValidateFAFQuery(spec);
// obtain processor
StreamSpecCompiled streamSpec = spec.StreamSpecs[0];
processor = FireAndForgetProcessorForgeFactory.ValidateResolveProcessor(streamSpec);
// obtain name and type
string processorName = processor.NamedWindowOrTableName;
EventType eventType = processor.EventTypeRspInputEvents;
// determine alias
string aliasName = processorName;
if (streamSpec.OptionalStreamName != null) {
aliasName = streamSpec.OptionalStreamName;
}
// activate subselect activations
var @base = new StatementBaseInfo(compilable, spec, null, statementRawInfo, null);
var subqueryNamedWindowConsumers = new List<NamedWindowConsumerStreamSpec>();
var subSelectActivationDesc = SubSelectHelperActivations.CreateSubSelectActivation(
EmptyList<FilterSpecCompiled>.Instance, subqueryNamedWindowConsumers, @base, services);
var subselectActivation = subSelectActivationDesc.Subselects;
_additionalForgeables.AddAll(subSelectActivationDesc.AdditionalForgeables);
// plan subselects
var namesPerStream = new[] {aliasName};
var typesPerStream = new[] { processor.EventTypePublic };
var eventTypeNames = new[] {typesPerStream[0].Name};
SubSelectHelperForgePlan subSelectForgePlan = SubSelectHelperForgePlanner.PlanSubSelect(
@base, subselectActivation, namesPerStream, typesPerStream, eventTypeNames, services);
_subselectForges = subSelectForgePlan.Subselects;
_additionalForgeables.AddAll(subSelectForgePlan.AdditionalForgeables);
// compile filter to optimize access to named window
StreamTypeServiceImpl typeService = new StreamTypeServiceImpl(
new[] {eventType},
new[] {aliasName},
new[] {true},
true,
false);
ExcludePlanHint excludePlanHint = ExcludePlanHint.GetHint(
typeService.StreamNames,
statementRawInfo,
services);
if (spec.Raw.WhereClause != null) {
queryGraph = new QueryGraphForge(1, excludePlanHint, false);
EPLValidationUtil.ValidateFilterWQueryGraphSafe(
queryGraph,
spec.Raw.WhereClause,
typeService,
statementRawInfo,
services);
}
else {
queryGraph = null;
}
// validate expressions
whereClause = EPStatementStartMethodHelperValidate.ValidateNodes(
spec.Raw,
typeService,
null,
statementRawInfo,
services);
// get executor
InitExec(aliasName, spec, statementRawInfo, services);
// plan table access
tableAccessForges = ExprTableEvalHelperPlan.PlanTableAccess(spec.Raw.TableExpressions);
}
public static SubSelectActivationDesc CreateSubSelectActivation(
IList <FilterSpecCompiled> filterSpecCompileds,
IList <NamedWindowConsumerStreamSpec> namedWindowConsumers,
StatementBaseInfo statement,
StatementCompileTimeServices services)
{
IDictionary <ExprSubselectNode, SubSelectActivationPlan> result = new LinkedHashMap <ExprSubselectNode, SubSelectActivationPlan>();
IList <StmtClassForgeableFactory> additionalForgeables = new List <StmtClassForgeableFactory>();
// Process all subselect expression nodes
foreach (ExprSubselectNode subselect in statement.StatementSpec.SubselectNodes)
{
StatementSpecCompiled statementSpec = subselect.StatementSpecCompiled;
StreamSpecCompiled streamSpec = statementSpec.StreamSpecs[0];
int subqueryNumber = subselect.SubselectNumber;
if (subqueryNumber == -1)
{
throw new IllegalStateException("Unexpected subquery");
}
ViewFactoryForgeArgs args = new ViewFactoryForgeArgs(-1, true, subqueryNumber, streamSpec.Options, null, statement.StatementRawInfo, services);
if (streamSpec is FilterStreamSpecCompiled)
{
if (services.IsFireAndForget)
{
throw new ExprValidationException("Fire-and-forget queries only allow subqueries against named windows and tables");
}
FilterStreamSpecCompiled filterStreamSpec = (FilterStreamSpecCompiled)statementSpec.StreamSpecs[0];
// Register filter, create view factories
ViewableActivatorForge activatorDeactivator = new ViewableActivatorFilterForge(
filterStreamSpec.FilterSpecCompiled,
false,
null,
true,
subqueryNumber);
ViewFactoryForgeDesc viewForgeDesc = ViewFactoryForgeUtil.CreateForges(
streamSpec.ViewSpecs,
args,
filterStreamSpec.FilterSpecCompiled.ResultEventType);
IList <ViewFactoryForge> forges = viewForgeDesc.Forges;
additionalForgeables.AddAll(viewForgeDesc.MultikeyForges);
EventType eventType = forges.IsEmpty() ? filterStreamSpec.FilterSpecCompiled.ResultEventType : forges[forges.Count - 1].EventType;
subselect.RawEventType = eventType;
filterSpecCompileds.Add(filterStreamSpec.FilterSpecCompiled);
// Add lookup to list, for later starts
result.Put(
subselect,
new SubSelectActivationPlan(filterStreamSpec.FilterSpecCompiled.ResultEventType, forges, activatorDeactivator, streamSpec));
}
else if (streamSpec is TableQueryStreamSpec)
{
TableQueryStreamSpec table = (TableQueryStreamSpec)streamSpec;
ExprNode filter = ExprNodeUtilityMake.ConnectExpressionsByLogicalAndWhenNeeded(table.FilterExpressions);
ViewableActivatorForge viewableActivator = new ViewableActivatorTableForge(table.Table, filter);
result.Put(
subselect,
new SubSelectActivationPlan(table.Table.InternalEventType, EmptyList <ViewFactoryForge> .Instance, viewableActivator, streamSpec));
subselect.RawEventType = table.Table.InternalEventType;
}
else
{
NamedWindowConsumerStreamSpec namedSpec = (NamedWindowConsumerStreamSpec)statementSpec.StreamSpecs[0];
namedWindowConsumers.Add(namedSpec);
NamedWindowMetaData nwinfo = namedSpec.NamedWindow;
EventType namedWindowType = nwinfo.EventType;
if (namedSpec.OptPropertyEvaluator != null)
{
namedWindowType = namedSpec.OptPropertyEvaluator.FragmentEventType;
}
// if named-window index sharing is disabled (the default) or filter expressions are provided then consume the insert-remove stream
bool disableIndexShare = HintEnum.DISABLE_WINDOW_SUBQUERY_INDEXSHARE.GetHint(statement.StatementRawInfo.Annotations) != null;
bool processorDisableIndexShare = !namedSpec.NamedWindow.IsEnableIndexShare;
if (disableIndexShare && namedSpec.NamedWindow.IsVirtualDataWindow)
{
disableIndexShare = false;
}
if ((!namedSpec.FilterExpressions.IsEmpty() || processorDisableIndexShare || disableIndexShare) && (!services.IsFireAndForget))
{
ExprNode filterEvaluator = null;
if (!namedSpec.FilterExpressions.IsEmpty())
{
filterEvaluator = ExprNodeUtilityMake.ConnectExpressionsByLogicalAndWhenNeeded(namedSpec.FilterExpressions);
}
ViewableActivatorForge activatorNamedWindow = new ViewableActivatorNamedWindowForge(
namedSpec,
nwinfo,
filterEvaluator,
null,
true,
namedSpec.OptPropertyEvaluator);
ViewFactoryForgeDesc viewForgeDesc = ViewFactoryForgeUtil.CreateForges(streamSpec.ViewSpecs, args, namedWindowType);
IList <ViewFactoryForge> forges = viewForgeDesc.Forges;
additionalForgeables.AddAll(viewForgeDesc.MultikeyForges);
subselect.RawEventType = forges.IsEmpty() ? namedWindowType : forges[forges.Count - 1].EventType;
result.Put(subselect, new SubSelectActivationPlan(namedWindowType, forges, activatorNamedWindow, streamSpec));
}
else
{
// else if there are no named window stream filter expressions and index sharing is enabled
ViewFactoryForgeDesc viewForgeDesc = ViewFactoryForgeUtil.CreateForges(streamSpec.ViewSpecs, args, namedWindowType);
IList <ViewFactoryForge> forges = viewForgeDesc.Forges;
additionalForgeables.AddAll(viewForgeDesc.MultikeyForges);
subselect.RawEventType = namedWindowType;
ViewableActivatorForge activatorNamedWindow = new ViewableActivatorSubselectNoneForge(namedWindowType);
result.Put(subselect, new SubSelectActivationPlan(namedWindowType, forges, activatorNamedWindow, streamSpec));
}
}
}
return(new SubSelectActivationDesc(result, additionalForgeables));
}
public FAFQueryMethodIUDBaseForge(
StatementSpecCompiled spec,
Compilable compilable,
StatementRawInfo statementRawInfo,
StatementCompileTimeServices services)
{
this.annotations = spec.Annotations;
this.hasTableAccess = spec.Raw.IntoTableSpec != null ||
(spec.TableAccessNodes != null && spec.TableAccessNodes.Count > 0);
if (spec.Raw.InsertIntoDesc != null &&
services.TableCompileTimeResolver.Resolve(spec.Raw.InsertIntoDesc.EventTypeName) != null) {
hasTableAccess = true;
}
if (spec.Raw.FireAndForgetSpec is FireAndForgetSpecUpdate ||
spec.Raw.FireAndForgetSpec is FireAndForgetSpecDelete) {
hasTableAccess |= spec.StreamSpecs[0] is TableQueryStreamSpec;
}
// validate general FAF criteria
FAFQueryMethodHelper.ValidateFAFQuery(spec);
// obtain processor
StreamSpecCompiled streamSpec = spec.StreamSpecs[0];
processor = FireAndForgetProcessorForgeFactory.ValidateResolveProcessor(streamSpec);
// obtain name and type
string processorName = processor.NamedWindowOrTableName;
EventType eventType = processor.EventTypeRspInputEvents;
// determine alias
string aliasName = processorName;
if (streamSpec.OptionalStreamName != null) {
aliasName = streamSpec.OptionalStreamName;
}
// compile filter to optimize access to named window
StreamTypeServiceImpl typeService = new StreamTypeServiceImpl(
new EventType[] {eventType},
new string[] {aliasName},
new bool[] {true},
true,
false);
ExcludePlanHint excludePlanHint = ExcludePlanHint.GetHint(
typeService.StreamNames,
statementRawInfo,
services);
if (spec.Raw.WhereClause != null) {
queryGraph = new QueryGraphForge(1, excludePlanHint, false);
EPLValidationUtil.ValidateFilterWQueryGraphSafe(
queryGraph,
spec.Raw.WhereClause,
typeService,
statementRawInfo,
services);
}
else {
queryGraph = null;
}
// validate expressions
whereClause = EPStatementStartMethodHelperValidate.ValidateNodes(
spec.Raw,
typeService,
null,
statementRawInfo,
services);
// get executor
InitExec(aliasName, spec, statementRawInfo, services);
// plan table access
tableAccessForges = ExprTableEvalHelperPlan.PlanTableAccess(spec.Raw.TableExpressions);
}
