public ExprValidationContext(StreamTypeServiceImpl types, ExprValidationContext ctx)
: this(
types,
ctx.EngineImportService,
ctx.StatementExtensionSvcContext,
ctx.ViewResourceDelegate,
ctx.TimeProvider,
ctx.VariableService,
ctx.TableService,
ctx.ExprEvaluatorContext,
ctx.EventAdapterService,
ctx.StatementName,
ctx.StatementId,
ctx.Annotations,
ctx.ContextDescriptor,
ctx.ScriptingService,
ctx.IsDisablePropertyExpressionEventCollCache, false,
ctx.IsAllowBindingConsumption,
ctx.IsResettingAggregations,
ctx.IntoTableName,
false)
{
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
if (StreamName == null && _isWildcard)
{
if (validationContext.StreamTypeService.StreamNames.Length > 1)
{
throw new ExprValidationException("Wildcard must be stream wildcard if specifying multiple streams, use the 'streamname.*' syntax instead");
}
_streamNum = 0;
}
else
{
_streamNum = validationContext.StreamTypeService.GetStreamNumForStreamName(StreamName);
}
if (_streamNum == -1)
{
throw new ExprValidationException("Stream by name '" + StreamName + "' could not be found among all streams");
}
_eventType = validationContext.StreamTypeService.EventTypes[_streamNum];
_type = _eventType.UnderlyingType;
return(null);
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
return(null);
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
throw new ExprValidationException(ERROR_MSG);
}
public abstract ExprNode Validate(ExprValidationContext validationContext);
public override ExprNode Validate(ExprValidationContext validationContext)
{
_evaluator = ChildNodes[0].ExprEvaluator; // always valid
return(null);
}
public override ExprNode Validate(ExprValidationContext validationContext)
{
// determine if any types are property agnostic; If yes, resolve to variable
var hasPropertyAgnosticType = false;
var types = validationContext.StreamTypeService.EventTypes;
for (var i = 0; i < validationContext.StreamTypeService.EventTypes.Length; i++)
{
if (types[i] is EventTypeSPI)
{
hasPropertyAgnosticType |= ((EventTypeSPI)types[i]).Metadata.IsPropertyAgnostic;
}
}
if (!hasPropertyAgnosticType)
{
// the variable name should not overlap with a property name
try
{
validationContext.StreamTypeService.ResolveByPropertyName(_variableName, false);
throw new ExprValidationException("The variable by name '" + _variableName + "' is ambigous to a property of the same name");
}
catch (DuplicatePropertyException e)
{
throw new ExprValidationException("The variable by name '" + _variableName + "' is ambigous to a property of the same name");
}
catch (PropertyNotFoundException e)
{
// expected
}
}
VariableMetaData variableMetadata = validationContext.VariableService.GetVariableMetaData(_variableName);
if (variableMetadata == null)
{
throw new ExprValidationException("Failed to find variable by name '" + _variableName + "'");
}
_isPrimitive = variableMetadata.EventType == null;
_variableType = variableMetadata.VariableType;
if (_optSubPropName != null)
{
if (variableMetadata.EventType == null)
{
throw new ExprValidationException("Property '" + _optSubPropName + "' is not valid for variable '" + _variableName + "'");
}
_eventTypeGetter = variableMetadata.EventType.GetGetter(_optSubPropName);
if (_eventTypeGetter == null)
{
throw new ExprValidationException("Property '" + _optSubPropName + "' is not valid for variable '" + _variableName + "'");
}
_variableType = variableMetadata.EventType.GetPropertyType(_optSubPropName);
}
_readersPerCp = validationContext.VariableService.GetReadersPerCP(_variableName);
if (variableMetadata.ContextPartitionName == null)
{
_readerNonCP = _readersPerCp.Get(EPStatementStartMethodConst.DEFAULT_AGENT_INSTANCE_ID);
}
return(null);
}