public static ExpressionToHqlTranslationResults GenerateHqlQuery(QueryModel queryModel, VisitorParameters parameters, bool root)
{
// Remove unnecessary body operators
RemoveUnnecessaryBodyOperators.ReWrite(queryModel);
// Merge aggregating result operators (distinct, count, sum etc) into the select clause
MergeAggregatingResultsRewriter.ReWrite(queryModel);
// Rewrite aggregate group-by statements
AggregatingGroupByRewriter.ReWrite(queryModel);
// Swap out non-aggregating group-bys
NonAggregatingGroupByRewriter.ReWrite(queryModel);
// Rewrite aggregating group-joins
AggregatingGroupJoinRewriter.ReWrite(queryModel);
// Rewrite non-aggregating group-joins
NonAggregatingGroupJoinRewriter.ReWrite(queryModel);
// Flatten pointless subqueries
QueryReferenceExpressionFlattener.ReWrite(queryModel);
// Add left joins for references
AddLeftJoinsReWriter.ReWrite(queryModel, parameters.SessionFactory);
var visitor = new QueryModelVisitor(parameters, root, queryModel);
visitor.Visit();
return(visitor._hqlTree.GetTranslation());
}
public static ExpressionToHqlTranslationResults GenerateHqlQuery(QueryModel queryModel, VisitorParameters parameters, bool root)
{
// Remove unnecessary body operators
RemoveUnnecessaryBodyOperators.ReWrite(queryModel);
// Merge aggregating result operators (distinct, count, sum etc) into the select clause
MergeAggregatingResultsRewriter.ReWrite(queryModel);
// Rewrite aggregate group-by statements
AggregatingGroupByRewriter.ReWrite(queryModel);
// Swap out non-aggregating group-bys
NonAggregatingGroupByRewriter.ReWrite(queryModel);
// Rewrite aggregating group-joins
AggregatingGroupJoinRewriter.ReWrite(queryModel);
// Rewrite non-aggregating group-joins
NonAggregatingGroupJoinRewriter.ReWrite(queryModel);
// Flatten pointless subqueries
QueryReferenceExpressionFlattener.ReWrite(queryModel);
// Add left joins for references
AddLeftJoinsReWriter.ReWrite(queryModel, parameters.SessionFactory);
// Move OrderBy clauses to end
MoveOrderByToEndRewriter.ReWrite(queryModel);
// rewrite any operators that should be applied on the outer query
// by flattening out the sub-queries that they are located in
ResultOperatorRewriterResult result = ResultOperatorRewriter.Rewrite(queryModel);
QueryModelVisitor visitor = new QueryModelVisitor(parameters, root, queryModel)
{
RewrittenOperatorResult = result
};
visitor.Visit();
return(visitor._hqlTree.GetTranslation());
}
public static void ReWrite(QueryModel queryModel, ISessionFactory sessionFactory)
{
var rewriter = new AddLeftJoinsReWriter(sessionFactory);
rewriter.VisitQueryModel(queryModel);
}
public static void ReWrite(QueryModel queryModel, ISessionFactory sessionFactory)
{
var rewriter = new AddLeftJoinsReWriter(sessionFactory);
rewriter.VisitQueryModel(queryModel);
}
