private void Where(Expression expression)
{
if (_where != null)
{
throw new InvalidOperationException("Cannot have multiple Where calls in TimeSeries functions ");
}
if (!(expression is UnaryExpression unary &&
unary.Operand is LambdaExpression lambda))
{
throw new NotSupportedException("Unsupported expression in Where clause " + expression);
}
_whereVisitor = new TimeSeriesWhereClauseVisitor <T>(lambda.Parameters[0].Name, _providerProcessor.DocumentQuery);
if (lambda.Parameters.Count == 2) // Where((ts, tag) => ...)
{
LoadByTag(lambda.Parameters[1].Name);
}
if (lambda.Body is BinaryExpression be)
{
WhereBinary(be);
}
else if (lambda.Body is MethodCallExpression call)
{
WhereMethod(call);
}
else
{
throw new NotSupportedException("Unsupported expression in Where clause " + expression);
}
}
private void Where(Expression expression)
{
if (_where != null)
{
throw new InvalidOperationException("Cannot have multiple Where calls in TimeSeries functions ");
}
if (!(expression is UnaryExpression unary &&
unary.Operand is LambdaExpression lambda))
{
throw new NotSupportedException("Unsupported expression in Where clause " + expression);
}
_whereVisitor = new TimeSeriesWhereClauseVisitor <T>(lambda.Parameters[0].Name, _documentQuery);
if (lambda.Parameters.Count == 2) // Where((ts, tag) => ...)
{
if (_loadTagAlias != null) // alias is already taken by 'group by tag' and we need to use the same one
{
_whereVisitor.Rename(lambda.Parameters[1].Name, _loadTagAlias);
}
LoadByTag(lambda.Parameters[1].Name);
}
if (lambda.Body is BinaryExpression be)
{
WhereBinary(be);
}
else if (lambda.Body is MethodCallExpression call)
{
WhereMethod(call);
}
else
{
throw new NotSupportedException("Unsupported expression in Where clause " + expression);
}
}
