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Improved performance of Count Hql queries (#7621)

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This commit is contained in:
Sergio Navarro
2017-04-20 21:16:39 +02:00
committed by Sébastien Ros
parent 23e16a2f51
commit fb949db305
1 changed files with 15 additions and 6 deletions
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21
src/Orchard/ContentManagement/DefaultHqlQuery.cs
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@@ -5,6 +5,8 @@ using System.Globalization;
using System.Linq;
using System.Text;
using NHibernate;
using NHibernate.Engine;
using NHibernate.Hql.Ast.ANTLR;
using NHibernate.Transform;
using Orchard.ContentManagement.Records;
using Orchard.Data.Providers;
@@ -28,6 +30,8 @@ namespace Orchard.ContentManagement {
public IContentManager ContentManager { get; private set; }
static readonly private ASTQueryTranslatorFactory TranslatorFactory = new ASTQueryTranslatorFactory();
public DefaultHqlQuery(
IContentManager contentManager,
ISession session,
@@ -207,12 +211,17 @@ namespace Orchard.ContentManagement {
public int Count() {
ApplyHqlVersionOptionsRestrictions(_versionOptions);
var hql = ToHql(true);
hql = "select count(Id) from Orchard.ContentManagement.Records.ContentItemVersionRecord where Id in ( " + hql + " )";
return Convert.ToInt32(_session.CreateQuery(hql)
.SetCacheable(true)
.UniqueResult())
;
var sql = ToSql(true);
sql = "SELECT count(*) as totalCount from (" + sql + ") t";
return Convert.ToInt32(_session.CreateSQLQuery(sql)
.AddScalar("totalCount", NHibernateUtil.Int32)
.UniqueResult());
}
public string ToSql(bool count) {
var sessionImp = (ISessionImplementor)_session;
var translators = TranslatorFactory.CreateQueryTranslators(ToHql(count), null, false, sessionImp.EnabledFilters, sessionImp.Factory);
return translators[0].SQLString;
}
public string ToHql(bool count) {