public StmtForgeMethodResult Make(
string @namespace,
string classPostfix,
StatementCompileTimeServices services)
{
var statementSpec = _base.StatementSpec;
var createDesc = statementSpec.Raw.CreateVariableDesc;
// Check if the variable is already declared
EPLValidationUtil.ValidateAlreadyExistsTableOrVariable(
createDesc.VariableName,
services.VariableCompileTimeResolver,
services.TableCompileTimeResolver,
services.EventTypeCompileTimeResolver);
// Get assignment value when compile-time-constant
object initialValue = null;
ExprForge initialValueExpr = null;
if (createDesc.Assignment != null) {
// Evaluate assignment expression
StreamTypeService typeService = new StreamTypeServiceImpl(
new EventType[0],
new string[0],
new bool[0],
false,
false);
var validationContext =
new ExprValidationContextBuilder(typeService, _base.StatementRawInfo, services).Build();
var validated = ExprNodeUtilityValidate.GetValidatedSubtree(
ExprNodeOrigin.VARIABLEASSIGN,
createDesc.Assignment,
validationContext);
if (validated.Forge.ForgeConstantType == ExprForgeConstantType.COMPILETIMECONST) {
initialValue = validated.Forge.ExprEvaluator.Evaluate(null, true, null);
}
createDesc.Assignment = validated;
initialValueExpr = validated.Forge;
}
var contextName = statementSpec.Raw.OptionalContextName;
NameAccessModifier? contextVisibility = null;
string contextModuleName = null;
if (contextName != null) {
var contextDetail = services.ContextCompileTimeResolver.GetContextInfo(contextName);
if (contextDetail == null) {
throw new ExprValidationException("Failed to find context '" + contextName + "'");
}
contextVisibility = contextDetail.ContextVisibility;
contextModuleName = contextDetail.ContextModuleName;
}
// get visibility
var visibility = services.ModuleVisibilityRules.GetAccessModifierVariable(_base, createDesc.VariableName);
// Compile metadata
var compileTimeConstant = createDesc.IsConstant &&
initialValueExpr != null &&
initialValueExpr.ForgeConstantType.IsCompileTimeConstant;
var metaData = VariableUtil.CompileVariable(
createDesc.VariableName,
_base.ModuleName,
visibility,
contextName,
contextVisibility,
contextModuleName,
createDesc.VariableType,
createDesc.IsConstant,
compileTimeConstant,
initialValue,
services.ImportServiceCompileTime,
EventBeanTypedEventFactoryCompileTime.INSTANCE,
services.EventTypeRepositoryPreconfigured,
services.BeanEventTypeFactoryPrivate);
// Register variable
services.VariableCompileTimeRegistry.NewVariable(metaData);
// Statement event type
var eventTypePropertyTypes = Collections.SingletonDataMap(
metaData.VariableName,
metaData.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 outputEventType = BaseNestableEventUtil.MakeMapTypeCompileTime(
eventTypeMetadata,
eventTypePropertyTypes,
null,
null,
null,
null,
services.BeanEventTypeFactoryPrivate,
services.EventTypeCompileTimeResolver);
services.EventTypeCompileTimeRegistry.NewType(outputEventType);
// 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[] {outputEventType},
new string[] {"trigger_stream"},
new bool[] {true},
false,
false);
var resultSetProcessor = ResultSetProcessorFactoryFactory.GetProcessorPrototype(
new ResultSetSpec(defaultSelectAllSpec),
streamTypeService,
null,
new bool[1],
false,
_base.ContextPropertyRegistry,
false,
false,
_base.StatementRawInfo,
services);
// Code generation
var statementFieldsClassName =
CodeGenerationIDGenerator.GenerateClassNameSimple(typeof(StatementFields), classPostfix);
var aiFactoryProviderClassName = CodeGenerationIDGenerator.GenerateClassNameSimple(
typeof(StatementAIFactoryProvider),
classPostfix);
var classNameRSP = CodeGenerationIDGenerator.GenerateClassNameSimple(
typeof(ResultSetProcessorFactoryProvider),
classPostfix);
var packageScope = new CodegenNamespaceScope(
@namespace,
statementFieldsClassName,
services.IsInstrumented);
var forge =
new StatementAgentInstanceFactoryCreateVariableForge(
createDesc.VariableName,
initialValueExpr,
classNameRSP);
var aiFactoryForgable = new StmtClassForgableAIFactoryProviderCreateVariable(
aiFactoryProviderClassName,
packageScope,
forge,
createDesc.VariableName);
var informationals = StatementInformationalsUtil.GetInformationals(
_base,
Collections.GetEmptyList<FilterSpecCompiled>(),
Collections.GetEmptyList<ScheduleHandleCallbackProvider>(),
Collections.GetEmptyList<NamedWindowConsumerStreamSpec>(),
true,
resultSetProcessor.SelectSubscriberDescriptor,
packageScope,
services);
var statementProviderClassName =
CodeGenerationIDGenerator.GenerateClassNameSimple(typeof(StatementProvider), classPostfix);
var stmtProvider = new StmtClassForgableStmtProvider(
aiFactoryProviderClassName,
statementProviderClassName,
informationals,
packageScope);
IList<StmtClassForgable> forgables = new List<StmtClassForgable>();
forgables.Add(
new StmtClassForgableRSPFactoryProvider(
classNameRSP,
resultSetProcessor,
packageScope,
_base.StatementRawInfo));
forgables.Add(aiFactoryForgable);
forgables.Add(stmtProvider);
forgables.Add(new StmtClassForgableStmtFields(statementFieldsClassName, packageScope, 0));
return new StmtForgeMethodResult(
forgables,
Collections.GetEmptyList<FilterSpecCompiled>(),
Collections.GetEmptyList<ScheduleHandleCallbackProvider>(),
Collections.GetEmptyList<NamedWindowConsumerStreamSpec>(),
Collections.GetEmptyList<FilterSpecParamExprNodeForge>());
}
