private TableOnMergeActionIns SetupInsert(TableMetadata tableMetadata, InternalEventRouter internalEventRouter, int selectClauseNumber, OnTriggerMergeActionInsert desc, EventType triggeringEventType, string triggeringStreamName, StatementContext statementContext)
{
// Compile insert-into info
var streamName = desc.OptionalStreamName != null ? desc.OptionalStreamName : tableMetadata.TableName;
var insertIntoDesc = InsertIntoDesc.FromColumns(streamName, desc.Columns);
EventType insertIntoTargetType = streamName.Equals(tableMetadata.TableName) ? tableMetadata.InternalEventType : null;
// rewrite any wildcards to use "stream.wildcard"
if (triggeringStreamName == null)
{
triggeringStreamName = UuidGenerator.Generate();
}
var selectNoWildcard = NamedWindowOnMergeHelper.CompileSelectNoWildcard(triggeringStreamName, desc.SelectClauseCompiled);
// 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.GetEmptyMap <string, object>(), null, null, null);
var eventTypes = new EventType[] { dummyTypeNoProperties, triggeringEventType };
var streamNames = new string[] { UuidGenerator.Generate(), triggeringStreamName };
StreamTypeService streamTypeService = new StreamTypeServiceImpl(eventTypes, streamNames, new bool[1], statementContext.EngineURI, false);
// Get select expr processor
var selectExprEventTypeRegistry = new SelectExprEventTypeRegistry(statementContext.StatementName, statementContext.StatementEventTypeRef);
var exprEvaluatorContext = new ExprEvaluatorContextStatement(statementContext, false);
var insertHelper = SelectExprProcessorFactory.GetProcessor(
Collections.SingletonList(selectClauseNumber),
selectNoWildcard.ToArray(), false, insertIntoDesc, insertIntoTargetType, null, streamTypeService,
statementContext.EventAdapterService,
statementContext.StatementResultService,
statementContext.ValueAddEventService,
selectExprEventTypeRegistry,
statementContext.EngineImportService,
exprEvaluatorContext,
statementContext.VariableService,
statementContext.ScriptingService,
statementContext.TableService,
statementContext.TimeProvider,
statementContext.EngineURI,
statementContext.StatementId,
statementContext.StatementName,
statementContext.Annotations,
statementContext.ContextDescriptor,
statementContext.ConfigSnapshot, null,
statementContext.NamedWindowMgmtService, null, null,
statementContext.StatementExtensionServicesContext);
var filterEval = desc.OptionalWhereClause == null ? null : desc.OptionalWhereClause.ExprEvaluator;
var routerToUser = streamName.Equals(tableMetadata.TableName) ? null : internalEventRouter;
var audit = AuditEnum.INSERT.GetAudit(statementContext.Annotations) != null;
return(new TableOnMergeActionIns(filterEval, insertHelper, routerToUser, statementContext.EpStatementHandle, statementContext.InternalEventEngineRouteDest, audit, tableMetadata.RowFactory));
}
public override EPPreparedExecuteIUDSingleStreamExec GetExecutor(FilterSpecCompiled filter, string aliasName)
{
var selectNoWildcard = NamedWindowOnMergeHelper.CompileSelectNoWildcard(UuidGenerator.Generate(), StatementSpec.SelectClauseSpec.SelectExprList);
StreamTypeService streamTypeService = new StreamTypeServiceImpl(StatementContext.EngineURI, true);
var exprEvaluatorContextStatement = new ExprEvaluatorContextStatement(StatementContext, true);
// assign names
var validationContext = new ExprValidationContext(
streamTypeService,
StatementContext.EngineImportService,
StatementContext.StatementExtensionServicesContext,
null, StatementContext.TimeProvider,
StatementContext.VariableService,
StatementContext.TableService,
exprEvaluatorContextStatement,
StatementContext.EventAdapterService,
StatementContext.StatementName,
StatementContext.StatementId,
StatementContext.Annotations,
StatementContext.ContextDescriptor,
StatementContext.ScriptingService,
false, false, true, false, null, false);
// determine whether column names are provided
// if the "values" keyword was used, allow sequential automatic name assignment
string[] assignedSequentialNames = null;
if (StatementSpec.InsertIntoDesc.ColumnNames.IsEmpty())
{
var insert = (FireAndForgetSpecInsert)StatementSpec.FireAndForgetSpec;
if (insert.IsUseValuesKeyword)
{
assignedSequentialNames = Processor.EventTypePublic.PropertyNames;
}
}
var count = -1;
foreach (var compiled in StatementSpec.SelectClauseSpec.SelectExprList)
{
count++;
if (compiled is SelectClauseExprCompiledSpec)
{
var expr = (SelectClauseExprCompiledSpec)compiled;
ExprNode validatedExpression = ExprNodeUtility.GetValidatedSubtree(ExprNodeOrigin.SELECT, expr.SelectExpression, validationContext);
expr.SelectExpression = validatedExpression;
if (expr.AssignedName == null)
{
if (expr.ProvidedName == null)
{
if (assignedSequentialNames != null && count < assignedSequentialNames.Length)
{
expr.AssignedName = assignedSequentialNames[count];
}
else
{
expr.AssignedName = ExprNodeUtility.ToExpressionStringMinPrecedenceSafe(expr.SelectExpression);
}
}
else
{
expr.AssignedName = expr.ProvidedName;
}
}
}
}
EventType optionalInsertIntoEventType = Processor.EventTypeResultSetProcessor;
var selectExprEventTypeRegistry = new SelectExprEventTypeRegistry(StatementContext.StatementName, StatementContext.StatementEventTypeRef);
var insertHelper = SelectExprProcessorFactory.GetProcessor(
Collections.SingletonList(0),
selectNoWildcard.ToArray(), false,
StatementSpec.InsertIntoDesc, optionalInsertIntoEventType, null, streamTypeService,
StatementContext.EventAdapterService,
StatementContext.StatementResultService,
StatementContext.ValueAddEventService, selectExprEventTypeRegistry,
StatementContext.EngineImportService, exprEvaluatorContextStatement,
StatementContext.VariableService,
StatementContext.ScriptingService,
StatementContext.TableService,
StatementContext.TimeProvider,
StatementContext.EngineURI,
StatementContext.StatementId,
StatementContext.StatementName,
StatementContext.Annotations,
StatementContext.ContextDescriptor,
StatementContext.ConfigSnapshot, null,
StatementContext.NamedWindowMgmtService, null, null,
StatementContext.StatementExtensionServicesContext);
return(new EPPreparedExecuteIUDSingleStreamExecInsert(exprEvaluatorContextStatement, insertHelper, StatementSpec.TableNodes, Services));
}
