private void ReadCompare(String[] variables, Object value)
{
_service.SetLocalVersion();
for (int i = 0; i < variables.Length; i++)
{
Assert.AreEqual(value, _service.GetReader(variables[i], 0).Value);
}
}
public void TestRollover()
{
_service = new VariableServiceImpl(
VariableServiceImpl.ROLLOVER_READER_BOUNDARY - 100,
10000,
new SchedulingServiceImpl(new TimeSourceServiceImpl()),
SupportEventAdapterService.Service,
null);
String[] variables = "a,b,c,d".Split(',');
var readers = new VariableReader[variables.Length];
for (int i = 0; i < variables.Length; i++)
{
_service.CreateNewVariable <long>(null, variables[i], false, 100L, null);
_service.AllocateVariableState(variables[i], EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID, null, false);
readers[i] = _service.GetReader(variables[i], EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID);
}
for (int i = 0; i < 1000; i++)
{
for (int j = 0; j < variables.Length; j++)
{
_service.Write(readers[j].VariableMetaData.VariableNumber, EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID, 100L + i);
_service.Commit();
}
ReadCompare(variables, 100L + i);
}
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="statementId">The statement id.</param>
/// <param name="eventAdapterService">for creating events</param>
/// <param name="variableService">for looking up variables</param>
/// <param name="variableName">is the name of the variable to create</param>
/// <param name="statementResultService">for coordinating on whether insert and remove stream events should be posted</param>
/// <param name="agentInstanceId"></param>
public CreateVariableView(int statementId, EventAdapterService eventAdapterService, VariableService variableService, string variableName, StatementResultService statementResultService, int agentInstanceId)
{
_eventAdapterService = eventAdapterService;
_variableName = variableName;
_statementResultService = statementResultService;
_reader = variableService.GetReader(variableName, agentInstanceId);
_eventType = GetEventType(statementId, eventAdapterService, _reader.VariableMetaData);
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="statementId">The statement id.</param>
/// <param name="eventAdapterService">for creating events</param>
/// <param name="variableService">for looking up variables</param>
/// <param name="variableName">is the name of the variable to create</param>
/// <param name="statementResultService">for coordinating on whether insert and remove stream events should be posted</param>
public CreateVariableView(String statementId, EventAdapterService eventAdapterService, VariableService variableService, String variableName, StatementResultService statementResultService)
{
_eventAdapterService = eventAdapterService;
_variableName = variableName;
_statementResultService = statementResultService;
_reader = variableService.GetReader(variableName, VariableServiceConstants.NOCONTEXT_AGENTINSTANCEID);
_eventType = GetEventType(statementId, eventAdapterService, _reader.VariableMetaData);
}
private AggSvcGroupByReclaimAgedEvalFuncFactory GetEvaluationFunction(VariableService variableService, String hintValue, String optionalContextName)
{
VariableMetaData variableMetaData = variableService.GetVariableMetaData(hintValue);
if (variableMetaData != null)
{
if (!variableMetaData.VariableType.IsNumeric())
{
throw new ExprValidationException("Variable type of variable '" + variableMetaData.VariableName + "' is not numeric");
}
String message = VariableServiceUtil.CheckVariableContextName(optionalContextName, variableMetaData);
if (message != null)
{
throw new ExprValidationException(message);
}
return(new ProxyAggSvcGroupByReclaimAgedEvalFuncFactory
{
ProcMake = agentInstanceContext =>
{
VariableReader reader = variableService.GetReader(
variableMetaData.VariableName, agentInstanceContext.AgentInstanceId);
return new AggSvcGroupByReclaimAgedEvalFuncVariable(reader);
}
});
}
else
{
double valueDouble;
try {
valueDouble = DoubleValue.ParseString(hintValue);
}
catch (Exception) {
throw new ExprValidationException("Failed to parse hint parameter value '" + hintValue + "' as a double-typed seconds value or variable name");
}
if (valueDouble <= 0)
{
throw new ExprValidationException("Hint parameter value '" + hintValue + "' is an invalid value, expecting a double-typed seconds value or variable name");
}
return(new ProxyAggSvcGroupByReclaimAgedEvalFuncFactory
{
ProcMake = agentInstanceContext => new AggSvcGroupByReclaimAgedEvalFuncConstant(valueDouble)
});
}
}
public VariableServiceCallable(String[] variables, VariableService variableService, VariableVersionCoord variableVersionCoord, int numLoops)
{
_random = new Random();
_variables = variables;
_variableService = variableService;
_variableVersionCoord = variableVersionCoord;
_numLoops = numLoops;
_results = new int[numLoops][];
for (int ii = 0; ii < numLoops; ii++)
{
_results[ii] = new int[variables.Length];
}
_marks = new int[numLoops];
_readers = new VariableReader[variables.Length];
for (int i = 0; i < variables.Length; i++)
{
_readers[i] = variableService.GetReader(variables[i], EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID);
}
}
public IList <EventBean> Poll(Object[] lookupValues, ExprEvaluatorContext exprEvaluatorContext)
{
switch (Strategy)
{
case MethodPollingExecStrategyEnum.TARGET_CONST:
return(InvokeInternal(lookupValues, InvocationTarget));
case MethodPollingExecStrategyEnum.TARGET_VAR:
return(InvokeInternalVariable(lookupValues, VariableReader));
case MethodPollingExecStrategyEnum.TARGET_VAR_CONTEXT:
var reader = VariableService.GetReader(VariableName, exprEvaluatorContext.AgentInstanceId);
if (reader == null)
{
return(null);
}
return(InvokeInternalVariable(lookupValues, reader));
default:
throw new NotSupportedException("unrecognized strategy " + Strategy);
}
}
public VariableServiceCallable(String[] variables, VariableService variableService, VariableVersionCoord variableVersionCoord, int numLoops)
{
_random = new Random();
_variables = variables;
_variableService = variableService;
_variableVersionCoord = variableVersionCoord;
_numLoops = numLoops;
_results = new int[numLoops][];
for (int ii = 0; ii < numLoops; ii++)
{
_results[ii] = new int[variables.Length];
}
_marks = new int[numLoops];
_readers = new VariableReader[variables.Length];
for (int i = 0; i < variables.Length; i++)
{
_readers[i] = variableService.GetReader(variables[i], 0);
}
}
public bool RemoveVariable(String name, bool force)
{
if (!force)
{
ICollection <String> statements = _statementVariableRef.GetStatementNamesForVar(name);
if ((statements != null) && (statements.IsNotEmpty()))
{
throw new ConfigurationException("Variable '" + name + "' is in use by one or more statements");
}
}
var reader = _variableService.GetReader(name, EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID);
if (reader == null)
{
return(false);
}
_variableService.RemoveVariableIfFound(name);
_statementVariableRef.RemoveReferencesVariable(name);
_statementVariableRef.RemoveConfiguredVariable(name);
return(true);
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="assignments">the list of variable assignments</param>
/// <param name="variableService">variable service</param>
/// <param name="eventAdapterService">event adapters</param>
/// <throws><seealso cref="ExprValidationException" /> when variables cannot be found</throws>
public VariableReadWritePackage(IList <OnTriggerSetAssignment> assignments, VariableService variableService, EventAdapterService eventAdapterService)
{
_metaData = new VariableMetaData[assignments.Count];
_readersForGlobalVars = new VariableReader[assignments.Count];
_mustCoerce = new bool[assignments.Count];
_writers = new WriteDesc[assignments.Count];
_variableTypes = new Dictionary <String, Object>();
_eventAdapterService = eventAdapterService;
_variableService = variableService;
IDictionary <EventTypeSPI, CopyMethodDesc> eventTypeWrittenProps = new Dictionary <EventTypeSPI, CopyMethodDesc>();
var count = 0;
IList <VariableTriggerSetDesc> assignmentList = new List <VariableTriggerSetDesc>();
foreach (var expressionWithAssignments in assignments)
{
var possibleVariableAssignment = ExprNodeUtility.CheckGetAssignmentToVariableOrProp(expressionWithAssignments.Expression);
if (possibleVariableAssignment == null)
{
throw new ExprValidationException("Missing variable assignment expression in assignment number " + count);
}
assignmentList.Add(new VariableTriggerSetDesc(possibleVariableAssignment.First, possibleVariableAssignment.Second.ExprEvaluator));
var fullVariableName = possibleVariableAssignment.First;
var variableName = fullVariableName;
String subPropertyName = null;
var indexOfDot = variableName.IndexOf('.');
if (indexOfDot != -1)
{
subPropertyName = variableName.Substring(indexOfDot + 1);
variableName = variableName.Substring(0, indexOfDot);
}
VariableMetaData variableMetadata = variableService.GetVariableMetaData(variableName);
_metaData[count] = variableMetadata;
if (variableMetadata == null)
{
throw new ExprValidationException("Variable by name '" + variableName + "' has not been created or configured");
}
if (variableMetadata.IsConstant)
{
throw new ExprValidationException("Variable by name '" + variableName + "' is declared constant and may not be set");
}
if (variableMetadata.ContextPartitionName == null)
{
_readersForGlobalVars[count] = variableService.GetReader(variableName, EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID);
}
if (subPropertyName != null)
{
if (variableMetadata.EventType == null)
{
throw new ExprValidationException("Variable by name '" + variableName + "' does not have a property named '" + subPropertyName + "'");
}
var type = variableMetadata.EventType;
if (!(type is EventTypeSPI))
{
throw new ExprValidationException("Variable by name '" + variableName + "' event type '" + type.Name + "' not writable");
}
var spi = (EventTypeSPI)type;
var writer = spi.GetWriter(subPropertyName);
var getter = spi.GetGetter(subPropertyName);
if (writer == null)
{
throw new ExprValidationException("Variable by name '" + variableName + "' the property '" + subPropertyName + "' is not writable");
}
_variableTypes.Put(fullVariableName, spi.GetPropertyType(subPropertyName));
var writtenProps = eventTypeWrittenProps.Get(spi);
if (writtenProps == null)
{
writtenProps = new CopyMethodDesc(variableName, new List <String>());
eventTypeWrittenProps.Put(spi, writtenProps);
}
writtenProps.PropertiesCopied.Add(subPropertyName);
_writers[count] = new WriteDesc(spi, variableName, writer, getter);
}
else
{
// determine types
var expressionType = possibleVariableAssignment.Second.ExprEvaluator.ReturnType;
if (variableMetadata.EventType != null)
{
if ((expressionType != null) && (!TypeHelper.IsSubclassOrImplementsInterface(expressionType, variableMetadata.EventType.UnderlyingType)))
{
throw new VariableValueException("Variable '" + variableName
+ "' of declared event type '" + variableMetadata.EventType.Name + "' underlying type '" + variableMetadata.EventType.UnderlyingType.FullName +
"' cannot be assigned a value of type '" + expressionType.FullName + "'");
}
_variableTypes.Put(variableName, variableMetadata.EventType.UnderlyingType);
}
else
{
var variableType = variableMetadata.VariableType;
_variableTypes.Put(variableName, variableType);
// determine if the expression type can be assigned
if (variableType != typeof(object))
{
if ((TypeHelper.GetBoxedType(expressionType) != variableType) &&
(expressionType != null))
{
if ((!TypeHelper.IsNumeric(variableType)) ||
(!TypeHelper.IsNumeric(expressionType)))
{
throw new ExprValidationException(VariableServiceUtil.GetAssigmentExMessage(variableName, variableType, expressionType));
}
if (!(TypeHelper.CanCoerce(expressionType, variableType)))
{
throw new ExprValidationException(VariableServiceUtil.GetAssigmentExMessage(variableName, variableType, expressionType));
}
_mustCoerce[count] = true;
}
}
}
}
count++;
}
_assignments = assignmentList.ToArray();
if (eventTypeWrittenProps.IsEmpty())
{
_copyMethods = new Dictionary <EventTypeSPI, EventBeanCopyMethod>();
return;
}
_copyMethods = new Dictionary <EventTypeSPI, EventBeanCopyMethod>();
foreach (var entry in eventTypeWrittenProps)
{
var propsWritten = entry.Value.PropertiesCopied;
var props = propsWritten.ToArray();
var copyMethod = entry.Key.GetCopyMethod(props);
if (copyMethod == null)
{
throw new ExprValidationException("Variable '" + entry.Value.VariableName
+ "' of declared type " + entry.Key.UnderlyingType.GetTypeNameFullyQualPretty() +
"' cannot be assigned to");
}
_copyMethods.Put(entry.Key, copyMethod);
}
}
/// <summary>
/// Write new variable values and commit, evaluating assignment expressions using the given
/// events per stream.
/// <para />Populates an optional map of new values if a non-null map is passed.
/// </summary>
/// <param name="variableService">variable service</param>
/// <param name="eventsPerStream">events per stream</param>
/// <param name="valuesWritten">null or an empty map to populate with written values</param>
/// <param name="exprEvaluatorContext">expression evaluation context</param>
public void WriteVariables(VariableService variableService,
EventBean[] eventsPerStream,
IDictionary <String, Object> valuesWritten,
ExprEvaluatorContext exprEvaluatorContext)
{
ISet <String> variablesBeansCopied = null;
if (!_copyMethods.IsEmpty())
{
variablesBeansCopied = new HashSet <String>();
}
// We obtain a write lock global to the variable space
// Since expressions can contain variables themselves, these need to be unchangeable for the duration
// as there could be multiple statements that do "var1 = var1 + 1".
using (variableService.ReadWriteLock.AcquireWriteLock())
{
try
{
variableService.SetLocalVersion();
var count = 0;
foreach (var assignment in _assignments)
{
var variableMetaData = _metaData[count];
int agentInstanceId = variableMetaData.ContextPartitionName == null ? EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID : exprEvaluatorContext.AgentInstanceId;
var value = assignment.Evaluator.Evaluate(
new EvaluateParams(eventsPerStream, true, exprEvaluatorContext));
if (_writers[count] != null)
{
var reader = variableService.GetReader(
variableMetaData.VariableName, exprEvaluatorContext.AgentInstanceId);
var current = (EventBean)reader.Value;
if (current == null)
{
value = null;
}
else
{
var writeDesc = _writers[count];
var copy = variablesBeansCopied.Add(writeDesc.VariableName);
if (copy)
{
var copied = _copyMethods.Get(writeDesc.Type).Copy(current);
current = copied;
}
variableService.Write(variableMetaData.VariableNumber, agentInstanceId, current);
writeDesc.Writer.Write(value, current);
}
}
else if (variableMetaData.EventType != null)
{
var eventBean = _eventAdapterService.AdapterForType(value, variableMetaData.EventType);
variableService.Write(variableMetaData.VariableNumber, agentInstanceId, eventBean);
}
else
{
if ((value != null) && (_mustCoerce[count]))
{
value = CoercerFactory.CoerceBoxed(value, variableMetaData.VariableType);
}
variableService.Write(variableMetaData.VariableNumber, agentInstanceId, value);
}
count++;
if (valuesWritten != null)
{
valuesWritten.Put(assignment.VariableName, value);
}
}
variableService.Commit();
}
catch (Exception ex)
{
Log.Error("Error evaluating on-set variable expressions: " + ex.Message, ex);
variableService.Rollback();
}
}
}
/// <summary>
/// Creates a method-invocation polling view for use as a stream that calls a method, or pulls results from cache.
/// </summary>
/// <param name="streamNumber">the stream number</param>
/// <param name="methodStreamSpec">defines the class and method to call</param>
/// <param name="eventAdapterService">for creating event types and events</param>
/// <param name="epStatementAgentInstanceHandle">for time-based callbacks</param>
/// <param name="methodResolutionService">for resolving classes and imports</param>
/// <param name="engineImportService">for resolving configurations</param>
/// <param name="schedulingService">for scheduling callbacks in expiry-time based caches</param>
/// <param name="scheduleBucket">for schedules within the statement</param>
/// <param name="exprEvaluatorContext">expression evaluation context</param>
/// <returns>pollable view</returns>
/// <throws>ExprValidationException if the expressions cannot be validated or the method descriptorhas incorrect class and method names, or parameter number and types don't match
/// </throws>
public static HistoricalEventViewable CreatePollMethodView(
int streamNumber,
MethodStreamSpec methodStreamSpec,
EventAdapterService eventAdapterService,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
MethodResolutionService methodResolutionService,
EngineImportService engineImportService,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket,
ExprEvaluatorContext exprEvaluatorContext,
VariableService variableService,
String contextName)
{
VariableMetaData variableMetaData = variableService.GetVariableMetaData(methodStreamSpec.ClassName);
MethodPollingExecStrategyEnum strategy;
VariableReader variableReader;
String variableName;
// Try to resolve the method
MethodInfo methodReflection;
FastMethod methodFastClass;
Type declaringClass;
Object invocationTarget;
try
{
if (variableMetaData != null)
{
variableName = variableMetaData.VariableName;
if (variableMetaData.ContextPartitionName != null)
{
if (contextName == null || !contextName.Equals(variableMetaData.ContextPartitionName))
{
throw new ExprValidationException("Variable by name '" + variableMetaData.VariableName + "' has been declared for context '" + variableMetaData.ContextPartitionName + "' and can only be used within the same context");
}
strategy = MethodPollingExecStrategyEnum.TARGET_VAR_CONTEXT;
variableReader = null;
invocationTarget = null;
}
else
{
variableReader = variableService.GetReader(methodStreamSpec.ClassName, VariableServiceConstants.NOCONTEXT_AGENTINSTANCEID);
if (variableMetaData.IsConstant)
{
invocationTarget = variableReader.Value;
if (invocationTarget is EventBean)
{
invocationTarget = ((EventBean)invocationTarget).Underlying;
}
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
}
else
{
invocationTarget = null;
strategy = MethodPollingExecStrategyEnum.TARGET_VAR;
}
}
methodReflection = methodResolutionService.ResolveNonStaticMethod(variableMetaData.VariableType, methodStreamSpec.MethodName);
}
else
{
methodReflection = methodResolutionService.ResolveMethod(methodStreamSpec.ClassName, methodStreamSpec.MethodName);
invocationTarget = null;
variableReader = null;
variableName = null;
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
}
declaringClass = methodReflection.DeclaringType;
methodFastClass = FastClass.CreateMethod(methodReflection);
}
catch (ExprValidationException e)
{
throw;
}
catch (Exception e)
{
throw new ExprValidationException(e.Message, e);
}
// Determine object type returned by method
var beanClass = methodFastClass.ReturnType;
if ((beanClass == typeof(void)) || (beanClass.IsBuiltinDataType()))
{
throw new ExprValidationException("Invalid return type for static method '" + methodFastClass.Name + "' of class '" + methodStreamSpec.ClassName + "', expecting a class");
}
bool isCollection = false;
bool isIterator = false;
Type collectionClass = null;
Type iteratorClass = null;
if (methodFastClass.ReturnType.IsArray)
{
beanClass = methodFastClass.ReturnType.GetElementType();
}
else if (!methodFastClass.ReturnType.IsGenericStringDictionary())
{
isCollection = methodFastClass.ReturnType.IsGenericCollection();
if (isCollection)
{
collectionClass = beanClass.GetGenericType(0);
beanClass = collectionClass;
}
var beanEnumerable = methodFastClass.ReturnType.FindGenericInterface(typeof(IEnumerable <>));
if (beanEnumerable != null)
{
isIterator = true;
iteratorClass = beanEnumerable.GetGenericType(0);
beanClass = iteratorClass;
}
else
{
var beanEnumerator = methodFastClass.ReturnType.FindGenericInterface(typeof(IEnumerator <>));
if (beanEnumerator != null)
{
isIterator = true;
iteratorClass = beanEnumerator.GetGenericType(0);
beanClass = iteratorClass;
}
}
}
// If the method returns a Map, look up the map type
IDictionary <string, object> mapType = null;
String mapTypeName = null;
if ((methodFastClass.ReturnType.IsGenericStringDictionary()) ||
(methodFastClass.ReturnType.IsArray && methodFastClass.ReturnType.GetElementType().IsGenericStringDictionary()) ||
(methodFastClass.ReturnType.IsGenericCollection() && methodFastClass.ReturnType.GetGenericType(0).IsGenericStringDictionary()) ||
(methodFastClass.ReturnType.IsGenericEnumerator() && methodFastClass.ReturnType.GetGenericType(0).IsGenericStringDictionary()) ||
(methodFastClass.ReturnType.IsGenericEnumerable() && methodFastClass.ReturnType.GetGenericType(0).IsGenericStringDictionary()))
{
var metadata = GetCheckMetadata(methodStreamSpec.MethodName, methodStreamSpec.ClassName, methodResolutionService, typeof(IDictionary <string, object>));
mapTypeName = metadata.TypeName;
mapType = (IDictionary <string, object>)metadata.TypeMetadata;
}
// If the method returns an Object[] or Object[][], look up the type information
IDictionary <string, object> oaType = null;
String oaTypeName = null;
if ((methodFastClass.ReturnType == typeof(object[])) ||
(methodFastClass.ReturnType == typeof(object[][])) ||
(methodFastClass.ReturnType.IsGenericCollection() && methodFastClass.ReturnType.GetGenericType(0) == typeof(object[])) ||
(methodFastClass.ReturnType.IsGenericEnumerator() && methodFastClass.ReturnType.GetGenericType(0) == typeof(object[])) ||
(methodFastClass.ReturnType.IsGenericEnumerable() && methodFastClass.ReturnType.GetGenericType(0) == typeof(object[])))
{
var metadata = GetCheckMetadata(methodStreamSpec.MethodName, methodStreamSpec.ClassName, methodResolutionService, typeof(IDictionary <string, object>));
oaTypeName = metadata.TypeName;
oaType = (IDictionary <String, Object>)metadata.TypeMetadata;
}
// Determine event type from class and method name
EventType eventType;
if (mapType != null)
{
eventType = eventAdapterService.AddNestableMapType(mapTypeName, mapType, null, false, true, true, false, false);
}
else if (oaType != null)
{
eventType = eventAdapterService.AddNestableObjectArrayType(oaTypeName, oaType, null, false, true, true, false, false, false, null);
}
else
{
eventType = eventAdapterService.AddBeanType(beanClass.FullName, beanClass, false, true, true);
}
// Construct polling strategy as a method invocation
var configCache = engineImportService.GetConfigurationMethodRef(declaringClass.FullName);
if (configCache == null)
{
configCache = engineImportService.GetConfigurationMethodRef(declaringClass.FullName);
}
var dataCacheDesc = configCache != null ? configCache.DataCacheDesc : null;
var dataCache = DataCacheFactory.GetDataCache(dataCacheDesc, epStatementAgentInstanceHandle, schedulingService, scheduleBucket);
PollExecStrategy methodPollStrategy;
if (mapType != null)
{
if (methodFastClass.ReturnType.IsArray)
{
methodPollStrategy = new MethodPollingExecStrategyMapArray(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isCollection)
{
methodPollStrategy = new MethodPollingExecStrategyMapCollection(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isIterator)
{
methodPollStrategy = new MethodPollingExecStrategyMapIterator(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else
{
methodPollStrategy = new MethodPollingExecStrategyMapPlain(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
}
else if (oaType != null)
{
if (methodFastClass.ReturnType == typeof(object[][]))
{
methodPollStrategy = new MethodPollingExecStrategyOAArray(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isCollection)
{
methodPollStrategy = new MethodPollingExecStrategyOACollection(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isIterator)
{
methodPollStrategy = new MethodPollingExecStrategyOAIterator(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else
{
methodPollStrategy = new MethodPollingExecStrategyOAPlain(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
}
else
{
if (methodFastClass.ReturnType.IsArray)
{
methodPollStrategy = new MethodPollingExecStrategyPOCOArray(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isCollection)
{
methodPollStrategy = new MethodPollingExecStrategyPOCOCollection(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else if (isIterator)
{
methodPollStrategy = new MethodPollingExecStrategyPOCOIterator(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
else
{
methodPollStrategy = new MethodPollingExecStrategyPOCOPlain(eventAdapterService, methodFastClass, eventType, invocationTarget, strategy, variableReader, variableName, variableService);
}
}
return(new MethodPollingViewable(variableMetaData == null, methodReflection.DeclaringType, methodStreamSpec, streamNumber, methodStreamSpec.Expressions, methodPollStrategy, dataCache, eventType, exprEvaluatorContext));
}
/// <summary>
/// Creates a method-invocation polling view for use as a stream that calls a method, or pulls results from cache.
/// </summary>
/// <param name="streamNumber">the stream number</param>
/// <param name="methodStreamSpec">defines the class and method to call</param>
/// <param name="eventAdapterService">for creating event types and events</param>
/// <param name="epStatementAgentInstanceHandle">for time-based callbacks</param>
/// <param name="engineImportService">for resolving configurations</param>
/// <param name="schedulingService">for scheduling callbacks in expiry-time based caches</param>
/// <param name="scheduleBucket">for schedules within the statement</param>
/// <param name="exprEvaluatorContext">expression evaluation context</param>
/// <param name="variableService">variable service</param>
/// <param name="statementContext">statement context</param>
/// <param name="contextName">context name</param>
/// <param name="dataCacheFactory">factory for cache</param>
/// <exception cref="ExprValidationException">
/// if the expressions cannot be validated or the method descriptor
/// has incorrect class and method names, or parameter number and types don't match
/// </exception>
/// <returns>pollable view</returns>
public static HistoricalEventViewable CreatePollMethodView(
int streamNumber,
MethodStreamSpec methodStreamSpec,
EventAdapterService eventAdapterService,
EPStatementAgentInstanceHandle epStatementAgentInstanceHandle,
EngineImportService engineImportService,
SchedulingService schedulingService,
ScheduleBucket scheduleBucket,
ExprEvaluatorContext exprEvaluatorContext,
VariableService variableService,
string contextName,
DataCacheFactory dataCacheFactory,
StatementContext statementContext)
{
VariableMetaData variableMetaData = variableService.GetVariableMetaData(methodStreamSpec.ClassName);
MethodPollingExecStrategyEnum strategy;
VariableReader variableReader = null;
string variableName = null;
MethodInfo methodReflection = null;
object invocationTarget = null;
string eventTypeNameProvidedUDFOrScript = null;
// see if this is a script in the from-clause
ExprNodeScript scriptExpression = null;
if (methodStreamSpec.ClassName == null && methodStreamSpec.MethodName != null)
{
var scriptsByName = statementContext.ExprDeclaredService.GetScriptsByName(methodStreamSpec.MethodName);
if (scriptsByName != null)
{
scriptExpression =
ExprDeclaredHelper.GetExistsScript(
statementContext.ConfigSnapshot.EngineDefaults.Scripts.DefaultDialect,
methodStreamSpec.MethodName, methodStreamSpec.Expressions, scriptsByName,
statementContext.ExprDeclaredService);
}
}
try
{
if (scriptExpression != null)
{
eventTypeNameProvidedUDFOrScript = scriptExpression.EventTypeNameAnnotation;
strategy = MethodPollingExecStrategyEnum.TARGET_SCRIPT;
ExprNodeUtility.ValidateSimpleGetSubtree(
ExprNodeOrigin.METHODINVJOIN, scriptExpression, statementContext, null, false);
}
else if (variableMetaData != null)
{
variableName = variableMetaData.VariableName;
if (variableMetaData.ContextPartitionName != null)
{
if (contextName == null || !contextName.Equals(variableMetaData.ContextPartitionName))
{
throw new ExprValidationException(
"Variable by name '" + variableMetaData.VariableName +
"' has been declared for context '" + variableMetaData.ContextPartitionName +
"' and can only be used within the same context");
}
strategy = MethodPollingExecStrategyEnum.TARGET_VAR_CONTEXT;
variableReader = null;
invocationTarget = null;
}
else
{
variableReader = variableService.GetReader(
methodStreamSpec.ClassName, EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID);
if (variableMetaData.IsConstant)
{
invocationTarget = variableReader.Value;
if (invocationTarget is EventBean)
{
invocationTarget = ((EventBean)invocationTarget).Underlying;
}
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
}
else
{
invocationTarget = null;
strategy = MethodPollingExecStrategyEnum.TARGET_VAR;
}
}
methodReflection = engineImportService.ResolveNonStaticMethodOverloadChecked(
variableMetaData.VariableType, methodStreamSpec.MethodName);
}
else if (methodStreamSpec.ClassName == null)
{
// must be either UDF or script
Pair <Type, EngineImportSingleRowDesc> udf = null;
try
{
udf = engineImportService.ResolveSingleRow(methodStreamSpec.MethodName);
}
catch (EngineImportException ex)
{
throw new ExprValidationException(
"Failed to find user-defined function '" + methodStreamSpec.MethodName + "': " + ex.Message,
ex);
}
methodReflection = engineImportService.ResolveMethodOverloadChecked(udf.First, methodStreamSpec.MethodName);
invocationTarget = null;
variableReader = null;
variableName = null;
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
eventTypeNameProvidedUDFOrScript = udf.Second.OptionalEventTypeName;
}
else
{
methodReflection = engineImportService.ResolveMethodOverloadChecked(methodStreamSpec.ClassName, methodStreamSpec.MethodName);
invocationTarget = null;
variableReader = null;
variableName = null;
strategy = MethodPollingExecStrategyEnum.TARGET_CONST;
}
}
catch (ExprValidationException)
{
throw;
}
catch (Exception e)
{
throw new ExprValidationException(e.Message, e);
}
Type methodProviderClass = null;
Type beanClass;
IDictionary <string, object> oaType = null;
IDictionary <string, object> mapType = null;
bool isCollection = false;
bool isIterator = false;
EventType eventType;
EventType eventTypeWhenMethodReturnsEventBeans = null;
bool isStaticMethod = false;
if (methodReflection != null)
{
methodProviderClass = methodReflection.DeclaringType;
isStaticMethod = variableMetaData == null;
// Determine object type returned by method
beanClass = methodReflection.ReturnType;
if ((beanClass == typeof(void)) || (beanClass.IsBuiltinDataType()))
{
throw new ExprValidationException(
"Invalid return type for static method '" + methodReflection.Name + "' of class '" +
methodStreamSpec.ClassName + "', expecting a class");
}
if (methodReflection.ReturnType.IsArray &&
methodReflection.ReturnType.GetElementType() != typeof(EventBean))
{
beanClass = methodReflection.ReturnType.GetElementType();
}
Type collectionClass = null;
Type iteratorClass = null;
if (!beanClass.IsGenericDictionary())
{
isCollection = beanClass.IsGenericCollection();
if (isCollection)
{
collectionClass = TypeHelper.GetGenericReturnType(methodReflection, true);
beanClass = collectionClass;
}
isIterator = beanClass.IsGenericEnumerator() && !beanClass.IsGenericDictionary();
if (isIterator)
{
iteratorClass = TypeHelper.GetGenericReturnType(methodReflection, true);
beanClass = iteratorClass;
}
}
// If the method returns a Map, look up the map type
string mapTypeName = null;
if ((methodReflection.ReturnType.IsGenericStringDictionary()) ||
(methodReflection.ReturnType.IsArray && methodReflection.ReturnType.GetElementType().IsGenericStringDictionary()) ||
(isCollection && collectionClass.IsImplementsInterface(typeof(Map))) ||
(isIterator && iteratorClass.IsImplementsInterface(typeof(Map))))
{
MethodMetadataDesc metadata;
if (variableMetaData != null)
{
metadata = GetCheckMetadataVariable(
methodStreamSpec.MethodName, variableMetaData, variableReader, engineImportService,
typeof(Map));
}
else
{
metadata = GetCheckMetadataNonVariable(
methodStreamSpec.MethodName, methodStreamSpec.ClassName, engineImportService, typeof(Map));
}
mapTypeName = metadata.TypeName;
mapType = (IDictionary <string, object>)metadata.TypeMetadata;
}
// If the method returns an object[] or object[][], look up the type information
string oaTypeName = null;
if (methodReflection.ReturnType == typeof(object[]) ||
methodReflection.ReturnType == typeof(object[][]) ||
(isCollection && collectionClass == typeof(object[])) ||
(isIterator && iteratorClass == typeof(object[])))
{
MethodMetadataDesc metadata;
if (variableMetaData != null)
{
metadata = GetCheckMetadataVariable(
methodStreamSpec.MethodName, variableMetaData, variableReader, engineImportService,
typeof(IDictionary <string, object>));
}
else
{
metadata = GetCheckMetadataNonVariable(
methodStreamSpec.MethodName, methodStreamSpec.ClassName, engineImportService,
typeof(IDictionary <string, object>));
}
oaTypeName = metadata.TypeName;
oaType = (IDictionary <string, object>)metadata.TypeMetadata;
}
// Determine event type from class and method name
// If the method returns EventBean[], require the event type
if ((methodReflection.ReturnType.IsArray &&
methodReflection.ReturnType.GetElementType() == typeof(EventBean)) ||
(isCollection && collectionClass == typeof(EventBean)) ||
(isIterator && iteratorClass == typeof(EventBean)))
{
string typeName = methodStreamSpec.EventTypeName == null
? eventTypeNameProvidedUDFOrScript
: methodStreamSpec.EventTypeName;
eventType = EventTypeUtility.RequireEventType(
"Method", methodReflection.Name, eventAdapterService, typeName);
eventTypeWhenMethodReturnsEventBeans = eventType;
}
else if (mapType != null)
{
eventType = eventAdapterService.AddNestableMapType(
mapTypeName, mapType, null, false, true, true, false, false);
}
else if (oaType != null)
{
eventType = eventAdapterService.AddNestableObjectArrayType(
oaTypeName, oaType, null, false, true, true, false, false, false, null);
}
else
{
eventType = eventAdapterService.AddBeanType(beanClass.GetDefaultTypeName(), beanClass, false, true, true);
}
// the @type is only allowed in conjunction with EventBean return types
if (methodStreamSpec.EventTypeName != null && eventTypeWhenMethodReturnsEventBeans == null)
{
throw new ExprValidationException(EventTypeUtility.DisallowedAtTypeMessage());
}
}
else
{
string eventTypeName = methodStreamSpec.EventTypeName == null
? scriptExpression.EventTypeNameAnnotation
: methodStreamSpec.EventTypeName;
eventType = EventTypeUtility.RequireEventType(
"Script", scriptExpression.Script.Name, eventAdapterService, eventTypeName);
}
// get configuration for cache
string configName = methodProviderClass != null ? methodProviderClass.FullName : methodStreamSpec.MethodName;
ConfigurationMethodRef configCache = engineImportService.GetConfigurationMethodRef(configName);
if (configCache == null)
{
configCache = engineImportService.GetConfigurationMethodRef(configName);
}
ConfigurationDataCache dataCacheDesc = (configCache != null) ? configCache.DataCacheDesc : null;
DataCache dataCache = dataCacheFactory.GetDataCache(
dataCacheDesc, statementContext, epStatementAgentInstanceHandle, schedulingService, scheduleBucket,
streamNumber);
// metadata
var meta = new MethodPollingViewableMeta(
methodProviderClass, isStaticMethod, mapType, oaType, invocationTarget, strategy, isCollection,
isIterator, variableReader, variableName, eventTypeWhenMethodReturnsEventBeans, scriptExpression);
return(new MethodPollingViewable(methodStreamSpec, dataCache, eventType, exprEvaluatorContext, meta, statementContext.ThreadLocalManager));
}
