/// <exception cref="NotSupportedException">N1Ql Bucket Subqueries Require A UseKeys Call</exception>
public override void VisitMainFromClause(MainFromClause fromClause, QueryModel queryModel)
{
var bucketConstantExpression = fromClause.FromExpression as ConstantExpression;
if ((bucketConstantExpression != null) &&
typeof(IBucketQueryable).IsAssignableFrom(bucketConstantExpression.Type))
{
if (_isSubQuery && !queryModel.BodyClauses.Any(p => p is UseKeysClause))
{
throw new NotSupportedException("N1Ql Bucket Subqueries Require A UseKeys Call");
}
_queryPartsAggregator.AddFromPart(new N1QlFromQueryPart()
{
Source = N1QlHelpers.EscapeIdentifier(((IBucketQueryable) bucketConstantExpression.Value).BucketName),
ItemName = GetExtentName(fromClause)
});
}
else if (fromClause.FromExpression.NodeType == ExpressionType.MemberAccess)
{
if (!_isSubQuery)
{
throw new NotSupportedException("Member Access In The Main From Clause Is Only Supported In Subqueries");
}
_queryPartsAggregator.AddFromPart(new N1QlFromQueryPart()
{
Source = GetN1QlExpression((MemberExpression) fromClause.FromExpression),
ItemName = GetExtentName(fromClause)
});
// This is an Array type subquery, since we're querying against a member not a bucket
_queryPartsAggregator.QueryType = N1QlQueryType.Array;
}
else if (fromClause.FromExpression.NodeType == SubQueryExpression.ExpressionType)
{
var subQuery = (SubQueryExpression) fromClause.FromExpression;
if (!subQuery.QueryModel.ResultOperators.Any(p => p is GroupResultOperator))
{
throw new NotSupportedException("Subqueries In The Main From Clause Are Only Supported For Grouping");
}
_groupingStatus = GroupingStatus.InGroupSubquery;
_queryGenerationContext.GroupingQuerySource = new QuerySourceReferenceExpression(fromClause);
VisitQueryModel(subQuery.QueryModel);
_groupingStatus = GroupingStatus.AfterGroupSubquery;
}
else if (fromClause.FromExpression.NodeType == QuerySourceReferenceExpression.ExpressionType)
{
if (!fromClause.FromExpression.Equals(_queryGenerationContext.GroupingQuerySource))
{
throw new NotSupportedException("From Clauses May Not Reference Any Query Source Other Than The Grouping Subquery");
}
// We're performing an aggregate against a group
_queryPartsAggregator.QueryType = N1QlQueryType.Aggregate;
// Ensure that we use the same extent name as the grouping
_queryGenerationContext.ExtentNameProvider.LinkExtents(_queryGenerationContext.GroupingQuerySource.ReferencedQuerySource, fromClause);
}
base.VisitMainFromClause(fromClause, queryModel);
}
/// <exception cref="NotSupportedException">N1Ql Bucket Subqueries Require A UseKeys Call</exception>
public override void VisitMainFromClause(MainFromClause fromClause, QueryModel queryModel)
{
var bucketConstantExpression = fromClause.FromExpression as ConstantExpression;
if ((bucketConstantExpression != null) &&
typeof(IBucketQueryable).IsAssignableFrom(bucketConstantExpression.Type))
{
if (_isSubQuery && !queryModel.BodyClauses.Any(p => p is UseKeysClause))
{
throw new NotSupportedException("N1Ql Bucket Subqueries Require A UseKeys Call");
}
_queryPartsAggregator.AddFromPart(new N1QlFromQueryPart()
{
Source = N1QlHelpers.EscapeIdentifier(((IBucketQueryable)bucketConstantExpression.Value).BucketName),
ItemName = GetExtentName(fromClause)
});
}
else if (fromClause.FromExpression.NodeType == ExpressionType.MemberAccess)
{
if (!_isSubQuery)
{
throw new NotSupportedException("Member Access In The Main From Clause Is Only Supported In Subqueries");
}
_queryPartsAggregator.AddFromPart(new N1QlFromQueryPart()
{
Source = GetN1QlExpression((MemberExpression)fromClause.FromExpression),
ItemName = GetExtentName(fromClause)
});
// This is an Array type subquery, since we're querying against a member not a bucket
_queryPartsAggregator.QueryType = N1QlQueryType.Array;
}
else if (fromClause.FromExpression.NodeType == SubQueryExpression.ExpressionType)
{
var subQuery = (SubQueryExpression)fromClause.FromExpression;
if (!subQuery.QueryModel.ResultOperators.Any(p => p is GroupResultOperator))
{
throw new NotSupportedException("Subqueries In The Main From Clause Are Only Supported For Grouping");
}
_groupingStatus = GroupingStatus.InGroupSubquery;
_queryGenerationContext.GroupingQuerySource = new QuerySourceReferenceExpression(fromClause);
VisitQueryModel(subQuery.QueryModel);
_groupingStatus = GroupingStatus.AfterGroupSubquery;
}
else if (fromClause.FromExpression.NodeType == QuerySourceReferenceExpression.ExpressionType)
{
if (!fromClause.FromExpression.Equals(_queryGenerationContext.GroupingQuerySource))
{
throw new NotSupportedException("From Clauses May Not Reference Any Query Source Other Than The Grouping Subquery");
}
// We're performing an aggregate against a group
_queryPartsAggregator.QueryType = N1QlQueryType.Aggregate;
// Ensure that we use the same extent name as the grouping
_queryGenerationContext.ExtentNameProvider.LinkExtents(_queryGenerationContext.GroupingQuerySource.ReferencedQuerySource, fromClause);
}
base.VisitMainFromClause(fromClause, queryModel);
}
