public static OnTriggerSetPlan HandleSetVariable(
string className,
CodegenNamespaceScope namespaceScope,
string classPostfix,
OnTriggerActivatorDesc activatorResult,
string optionalStreamName,
IDictionary<ExprSubselectNode, SubSelectActivationPlan> subselectActivation,
OnTriggerSetDesc desc,
StatementBaseInfo @base,
StatementCompileTimeServices services)
{
StreamTypeService typeService = new StreamTypeServiceImpl(
new[] {activatorResult.ActivatorResultEventType},
new[] {optionalStreamName},
new[] {true},
false,
false);
var validationContext = new ExprValidationContextBuilder(typeService, @base.StatementRawInfo, services)
.WithAllowBindingConsumption(true)
.Build();
// handle subselects
var subselectForges = SubSelectHelperForgePlanner.PlanSubSelect(
@base,
subselectActivation,
new[] {optionalStreamName},
new[] {activatorResult.ActivatorResultEventType},
new[] {activatorResult.TriggerEventTypeName},
services);
// validate assignments
foreach (var assignment in desc.Assignments) {
var validated = ExprNodeUtilityValidate.GetValidatedAssignment(assignment, validationContext);
assignment.Expression = validated;
}
// create read-write logic
var variableReadWritePackageForge = new VariableReadWritePackageForge(desc.Assignments, services);
// plan table access
var tableAccessForges = ExprTableEvalHelperPlan.PlanTableAccess(@base.StatementSpec.TableAccessNodes);
// create output event type
var eventTypeName = services.EventTypeNameGeneratorStatement.AnonymousTypeName;
var eventTypeMetadata = new EventTypeMetadata(
eventTypeName,
@base.ModuleName,
EventTypeTypeClass.STATEMENTOUT,
EventTypeApplicationType.MAP,
NameAccessModifier.TRANSIENT,
EventTypeBusModifier.NONBUS,
false,
EventTypeIdPair.Unassigned());
var eventType = BaseNestableEventUtil.MakeMapTypeCompileTime(
eventTypeMetadata,
variableReadWritePackageForge.VariableTypes,
null,
null,
null,
null,
services.BeanEventTypeFactoryPrivate,
services.EventTypeCompileTimeResolver);
services.EventTypeCompileTimeRegistry.NewType(eventType);
// Handle output format
var defaultSelectAllSpec = new StatementSpecCompiled();
defaultSelectAllSpec.SelectClauseCompiled.WithSelectExprList(new SelectClauseElementWildcard());
defaultSelectAllSpec.Raw.SelectStreamDirEnum = SelectClauseStreamSelectorEnum.RSTREAM_ISTREAM_BOTH;
StreamTypeService streamTypeService = new StreamTypeServiceImpl(
new EventType[] {eventType},
new[] {"trigger_stream"},
new[] {true},
false,
false);
var resultSetProcessor = ResultSetProcessorFactoryFactory.GetProcessorPrototype(
new ResultSetSpec(defaultSelectAllSpec),
streamTypeService,
null,
new bool[1],
false,
@base.ContextPropertyRegistry,
false,
false,
@base.StatementRawInfo,
services);
var classNameRSP = CodeGenerationIDGenerator.GenerateClassNameSimple(
typeof(ResultSetProcessorFactoryProvider),
classPostfix);
var forge = new StatementAgentInstanceFactoryOnTriggerSetForge(
activatorResult.Activator,
eventType,
subselectForges,
tableAccessForges,
variableReadWritePackageForge,
classNameRSP);
IList<StmtClassForgable> forgables = new List<StmtClassForgable>();
forgables.Add(
new StmtClassForgableRSPFactoryProvider(
classNameRSP,
resultSetProcessor,
namespaceScope,
@base.StatementRawInfo));
var onTrigger = new StmtClassForgableAIFactoryProviderOnTrigger(className, namespaceScope, forge);
return new OnTriggerSetPlan(onTrigger, forgables, resultSetProcessor.SelectSubscriberDescriptor);
}
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 OnTriggerPlan HandleContextFactoryOnTrigger(
string className,
CodegenNamespaceScope namespaceScope,
string classPostfix,
NamedWindowMetaData namedWindow,
TableMetaData table,
OnTriggerWindowPlan planDesc,
StatementBaseInfo @base,
StatementCompileTimeServices services)
{
// validate context
var infraName = planDesc.OnTriggerDesc.WindowName;
var infraTitle = (namedWindow != null ? "Named window" : "Table") + " '" + infraName + "'";
var infraContextName = namedWindow != null ? namedWindow.ContextName : table.OptionalContextName;
var infraModuleName = namedWindow != null ? namedWindow.NamedWindowModuleName : table.TableModuleName;
var infraEventType = namedWindow != null ? namedWindow.EventType : table.InternalEventType;
var resultEventType = namedWindow != null ? namedWindow.EventType : table.PublicEventType;
var infraVisibility = namedWindow != null
? namedWindow.EventType.Metadata.AccessModifier
: table.TableVisibility;
ValidateOnExpressionContext(planDesc.ContextName, infraContextName, infraTitle);
// validate expressions and plan subselects
var validationResult = OnTriggerPlanValidator.ValidateOnTriggerPlan(
infraEventType,
planDesc.OnTriggerDesc,
planDesc.StreamSpec,
planDesc.ActivatorResult,
planDesc.SubselectActivation,
@base,
services);
var validatedJoin = validationResult.ValidatedJoin;
var activatorResultEventType = planDesc.ActivatorResult.ActivatorResultEventType;
var pair = IndexHintPair.GetIndexHintPair(
planDesc.OnTriggerDesc,
@base.StatementSpec.StreamSpecs[0].OptionalStreamName,
@base.StatementRawInfo,
services);
var indexHint = pair.IndexHint;
var excludePlanHint = pair.ExcludePlanHint;
var enabledSubqueryIndexShare = namedWindow != null && namedWindow.IsEnableIndexShare;
var isVirtualWindow = namedWindow != null && namedWindow.IsVirtualDataWindow;
var indexMetadata = namedWindow != null ? namedWindow.IndexMetadata : table.IndexMetadata;
var optionalUniqueKeySet = namedWindow != null ? namedWindow.UniquenessAsSet : table.UniquenessAsSet;
// query plan
var onlyUseExistingIndexes = table != null;
SubordinateWMatchExprQueryPlanForge queryPlan = SubordinateQueryPlanner.PlanOnExpression(
validatedJoin,
activatorResultEventType,
indexHint,
enabledSubqueryIndexShare,
-1,
excludePlanHint,
isVirtualWindow,
indexMetadata,
infraEventType,
optionalUniqueKeySet,
onlyUseExistingIndexes,
@base.StatementRawInfo,
services);
// indicate index dependencies
if (queryPlan.Indexes != null && infraVisibility == NameAccessModifier.PUBLIC) {
foreach (var index in queryPlan.Indexes) {
services.ModuleDependenciesCompileTime.AddPathIndex(
namedWindow != null,
infraName,
infraModuleName,
index.IndexName,
index.IndexModuleName,
services.NamedWindowCompileTimeRegistry,
services.TableCompileTimeRegistry);
}
}
var onTriggerType = planDesc.OnTriggerDesc.OnTriggerType;
var activator = planDesc.ActivatorResult.Activator;
var subselectForges = validationResult.SubselectForges;
var tableAccessForges = validationResult.TableAccessForges;
IList<StmtClassForgable> forgables = new List<StmtClassForgable>(2);
StatementAgentInstanceFactoryOnTriggerInfraBaseForge forge;
var classNameRSP = CodeGenerationIDGenerator.GenerateClassNameSimple(
typeof(ResultSetProcessorFactoryProvider),
classPostfix);
ResultSetProcessorDesc resultSetProcessor;
if (onTriggerType == OnTriggerType.ON_SELECT) {
resultSetProcessor = validationResult.ResultSetProcessorPrototype;
var outputEventType = resultSetProcessor.ResultEventType;
var insertInto = false;
TableMetaData optionalInsertIntoTable = null;
var insertIntoDesc = @base.StatementSpec.Raw.InsertIntoDesc;
var addToFront = false;
if (insertIntoDesc != null) {
insertInto = true;
optionalInsertIntoTable = services.TableCompileTimeResolver.Resolve(insertIntoDesc.EventTypeName);
var optionalInsertIntoNamedWindow =
services.NamedWindowCompileTimeResolver.Resolve(insertIntoDesc.EventTypeName);
addToFront = optionalInsertIntoNamedWindow != null || optionalInsertIntoTable != null;
}
var selectAndDelete = planDesc.OnTriggerDesc.IsDeleteAndSelect;
var distinct = @base.StatementSpec.SelectClauseCompiled.IsDistinct;
forge = new StatementAgentInstanceFactoryOnTriggerInfraSelectForge(
activator,
outputEventType,
subselectForges,
tableAccessForges,
namedWindow,
table,
queryPlan,
classNameRSP,
insertInto,
addToFront,
optionalInsertIntoTable,
selectAndDelete,
distinct);
}
else {
var defaultSelectAllSpec = new StatementSpecCompiled();
defaultSelectAllSpec.SelectClauseCompiled.WithSelectExprList(new SelectClauseElementWildcard());
defaultSelectAllSpec.Raw.SelectStreamDirEnum = SelectClauseStreamSelectorEnum.RSTREAM_ISTREAM_BOTH;
StreamTypeService typeService = new StreamTypeServiceImpl(
new[] {resultEventType},
new[] {infraName},
new[] {false},
false,
false);
resultSetProcessor = ResultSetProcessorFactoryFactory.GetProcessorPrototype(
new ResultSetSpec(defaultSelectAllSpec),
typeService,
null,
new bool[1],
false,
@base.ContextPropertyRegistry,
false,
false,
@base.StatementRawInfo,
services);
if (onTriggerType == OnTriggerType.ON_DELETE) {
forge = new StatementAgentInstanceFactoryOnTriggerInfraDeleteForge(
activator,
resultEventType,
subselectForges,
tableAccessForges,
classNameRSP,
namedWindow,
table,
queryPlan);
}
else if (onTriggerType == OnTriggerType.ON_UPDATE) {
var updateDesc = (OnTriggerWindowUpdateDesc) planDesc.OnTriggerDesc;
EventBeanUpdateHelperForge updateHelper = EventBeanUpdateHelperForgeFactory.Make(
infraName,
(EventTypeSPI) infraEventType,
updateDesc.Assignments,
validationResult.ZeroStreamAliasName,
activatorResultEventType,
namedWindow != null,
@base.StatementName,
services.EventTypeAvroHandler);
forge = new StatementAgentInstanceFactoryOnTriggerInfraUpdateForge(
activator,
resultEventType,
subselectForges,
tableAccessForges,
classNameRSP,
namedWindow,
table,
queryPlan,
updateHelper);
}
else if (onTriggerType == OnTriggerType.ON_MERGE) {
var onMergeTriggerDesc = (OnTriggerMergeDesc) planDesc.OnTriggerDesc;
var onMergeHelper = new InfraOnMergeHelperForge(
onMergeTriggerDesc,
activatorResultEventType,
planDesc.StreamSpec.OptionalStreamName,
infraName,
(EventTypeSPI) infraEventType,
@base.StatementRawInfo,
services,
table);
forge = new StatementAgentInstanceFactoryOnTriggerInfraMergeForge(
activator,
resultEventType,
subselectForges,
tableAccessForges,
classNameRSP,
namedWindow,
table,
queryPlan,
onMergeHelper);
}
else {
throw new IllegalStateException("Unrecognized trigger type " + onTriggerType);
}
}
forgables.Add(
new StmtClassForgableRSPFactoryProvider(
classNameRSP,
resultSetProcessor,
namespaceScope,
@base.StatementRawInfo));
var queryPlanLogging = services.Configuration.Common.Logging.IsEnableQueryPlan;
SubordinateQueryPlannerUtil.QueryPlanLogOnExpr(
queryPlanLogging,
QUERY_PLAN_LOG,
queryPlan,
@base.StatementSpec.Annotations,
services.ImportServiceCompileTime);
var onTrigger = new StmtClassForgableAIFactoryProviderOnTrigger(className, namespaceScope, forge);
return new OnTriggerPlan(onTrigger, forgables, resultSetProcessor.SelectSubscriberDescriptor);
}
