private static ExprAndNode MakeValidateAndNode(
IList<ExprNode> remainingExprNodes,
FilterSpecCompilerArgs args)
{
var andNode = ExprNodeUtilityMake.ConnectExpressionsByLogicalAnd(remainingExprNodes);
var validationContext = new ExprValidationContextBuilder(args.streamTypeService, args.statementRawInfo, args.compileTimeServices)
.WithAllowBindingConsumption(true)
.WithContextDescriptor(args.contextDescriptor)
.Build();
andNode.Validate(validationContext);
return andNode;
}
private static ExprNode GetFilterExpressionInclOnClause(
ExprNode whereClause,
OuterJoinDesc[] outerJoinDescList,
StatementRawInfo rawInfo,
StatementCompileTimeServices services)
{
if (whereClause == null) { // no need to add as query planning is fully based on on-clause
return null;
}
if (outerJoinDescList.Length == 0) { // not an outer-join syntax
return whereClause;
}
if (!OuterJoinDesc.ConsistsOfAllInnerJoins(outerJoinDescList)) { // all-inner joins
return whereClause;
}
var hasOnClauses = OuterJoinDesc.HasOnClauses(outerJoinDescList);
if (!hasOnClauses) {
return whereClause;
}
IList<ExprNode> expressions = new List<ExprNode>();
expressions.Add(whereClause);
foreach (var outerJoinDesc in outerJoinDescList) {
if (outerJoinDesc.OptLeftNode != null) {
expressions.Add(outerJoinDesc.MakeExprNode(rawInfo, services));
}
}
var andNode = ExprNodeUtilityMake.ConnectExpressionsByLogicalAnd(expressions);
try {
andNode.Validate(null);
}
catch (ExprValidationException ex) {
throw new EPRuntimeException("Unexpected exception validating expression: " + ex.Message, ex);
}
return andNode;
}
