From 302226f10b7619c3f042278f644527cd592d7be1 Mon Sep 17 00:00:00 2001
From: Sebastien Ros <none@none>
Date: Thu, 10 Nov 2011 17:53:15 -0800
Subject: [PATCH] Allwing the content manager to get an optional set of
 predicates

--HG--
branch : 1.x
---
 .../ContentManagement/DefaultContentQuery.cs  | 45 ++++++++++++-------
 .../ContentManagement/IContentQuery.cs        |  4 +-
 2 files changed, 32 insertions(+), 17 deletions(-)

diff --git a/src/Orchard/ContentManagement/DefaultContentQuery.cs b/src/Orchard/ContentManagement/DefaultContentQuery.cs
index 3abcd46ee..81a3979bd 100644
--- a/src/Orchard/ContentManagement/DefaultContentQuery.cs
+++ b/src/Orchard/ContentManagement/DefaultContentQuery.cs
@@ -75,21 +75,36 @@ namespace Orchard.ContentManagement {
             BindPartCriteria<TRecord>();
         }
 
-        private void Where<TRecord>(Expression<Func<TRecord, bool>> predicate) where TRecord : ContentPartRecord {
-
-            // build a linq to nhibernate expression
-            var options = new QueryOptions();
-            var queryProvider = new NHibernateQueryProvider(BindSession(), options);
-            var queryable = new Query<TRecord>(queryProvider, options).Where(predicate);
-
-            // translate it into the nhibernate ICriteria implementation
-            var criteria = (CriteriaImpl)queryProvider.TranslateExpression(queryable.Expression);
+        private void Where<TRecord>(Expression<Func<TRecord, bool>> predicate, params Expression<Func<TRecord, bool>>[] orPredicates) where TRecord : ContentPartRecord {
 
             // attach the criterion from the predicate to this query's criteria for the record
             var recordCriteria = BindPartCriteria<TRecord>();
-            foreach (var expressionEntry in criteria.IterateExpressionEntries()) {
-                recordCriteria.Add(expressionEntry.Criterion);
+            var predicates = Enumerable
+                .Empty<Expression<Func<TRecord, bool>>>()
+                .Union(new []{predicate})
+                .Union(orPredicates);
+
+            var disjunction = Restrictions.Disjunction();
+
+            foreach (var p in predicates) {
+                // build a linq to nhibernate expression
+                var options = new QueryOptions();
+                var queryProvider = new NHibernateQueryProvider(BindSession(), options);
+
+                var queryable = new Query<TRecord>(queryProvider, options).Where(p);
+                var conjunction = Restrictions.Conjunction();
+
+                // translate it into the nhibernate ICriteria implementation
+                var criteria = (CriteriaImpl) queryProvider.TranslateExpression(queryable.Expression);
+
+                foreach (var expressionEntry in criteria.IterateExpressionEntries()) {
+                    conjunction.Add(expressionEntry.Criterion);
+                }
+
+                disjunction.Add(conjunction);
             }
+
+            recordCriteria.Add(disjunction);
         }
 
         private void Where(Action<IExpressionFactory> expression) {
@@ -220,8 +235,8 @@ namespace Orchard.ContentManagement {
                 return new ContentQuery<T>(_query);
             }
 
-            IContentQuery<T, TRecord> IContentQuery<T>.Where<TRecord>(Expression<Func<TRecord, bool>> predicate) {
-                _query.Where(predicate);
+            IContentQuery<T, TRecord> IContentQuery<T>.Where<TRecord>(Expression<Func<TRecord, bool>> predicate, params Expression<Func<TRecord, bool>>[] orPredicates) {
+                _query.Where(predicate, orPredicates);
                 return new ContentQuery<T, TRecord>(_query);
             }
 
@@ -253,8 +268,8 @@ namespace Orchard.ContentManagement {
                 return this;
             }
 
-            IContentQuery<T, TR> IContentQuery<T, TR>.Where(Expression<Func<TR, bool>> predicate) {
-                _query.Where(predicate);
+            IContentQuery<T, TR> IContentQuery<T, TR>.Where(Expression<Func<TR, bool>> predicate, params Expression<Func<TR, bool>>[] orPredicates) {
+                _query.Where(predicate, orPredicates);
                 return this;
             }
 
diff --git a/src/Orchard/ContentManagement/IContentQuery.cs b/src/Orchard/ContentManagement/IContentQuery.cs
index deadb7d2e..c4ca89391 100644
--- a/src/Orchard/ContentManagement/IContentQuery.cs
+++ b/src/Orchard/ContentManagement/IContentQuery.cs
@@ -21,7 +21,7 @@ namespace Orchard.ContentManagement {
         IContentQuery<TPart, TRecord> Join<TRecord>() where TRecord : ContentPartRecord;
 
         IContentQuery<TPart> Where(Action<IExpressionFactory> predicate);
-        IContentQuery<TPart, TRecord> Where<TRecord>(Expression<Func<TRecord, bool>> predicate) where TRecord : ContentPartRecord;
+        IContentQuery<TPart, TRecord> Where<TRecord>(Expression<Func<TRecord, bool>> predicate, params Expression<Func<TRecord, bool>>[] orPredicates) where TRecord : ContentPartRecord;
 
         IContentQuery<TPart> OrderBy(Action<ISortFactory> order);
         IContentQuery<TPart, TRecord> OrderBy<TRecord, TKey>(Expression<Func<TRecord, TKey>> keySelector) where TRecord : ContentPartRecord;
@@ -31,7 +31,7 @@ namespace Orchard.ContentManagement {
     public interface IContentQuery<TPart, TRecord> : IContentQuery<TPart> where TPart : IContent where TRecord : ContentPartRecord {
         new IContentQuery<TPart, TRecord> ForVersion(VersionOptions options);
 
-        IContentQuery<TPart, TRecord> Where(Expression<Func<TRecord, bool>> predicate);
+        IContentQuery<TPart, TRecord> Where(Expression<Func<TRecord, bool>> predicate, params Expression<Func<TRecord, bool>>[] orPredicates);
         IContentQuery<TPart, TRecord> OrderBy<TKey>(Expression<Func<TRecord, TKey>> keySelector);
         IContentQuery<TPart, TRecord> OrderByDescending<TKey>(Expression<Func<TRecord, TKey>> keySelector);
     }