Grouping on original list using LINQ

src/AddIns/Misc/Reporting/ICSharpCode.Reporting/ICSharpCode.Reporting.csproj

@@ -88,6 +88,7 @@
     <Compile Include="Src\Collections.cs" />
     <Compile Include="Src\Configuration\AssemblyInfo.cs" />
     <Compile Include="Src\DataManager\Listhandling\CollectionSource.cs" />
+    <Compile Include="Src\DataManager\Listhandling\CollectionDataSource.cs" />
     <Compile Include="Src\DataManager\Listhandling\IndexList.cs" />
     <Compile Include="Src\DataSource\Comparer\BaseComparer.cs" />
     <Compile Include="Src\DataSource\Comparer\GroupComparer.cs" />

src/AddIns/Misc/Reporting/ICSharpCode.Reporting/Src/DataManager/Listhandling/CollectionDataSource.cs

@@ -0,0 +1,197 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
+using System.Globalization;
+using System.Linq;
+
+using ICSharpCode.Reporting.BaseClasses;
+using ICSharpCode.Reporting.DataSource;
+using ICSharpCode.Reporting.DataSource.Comparer;
+using ICSharpCode.Reporting.Interfaces;
+using ICSharpCode.Reporting.Interfaces.Data;
+using ICSharpCode.Reporting.Items;
+
+namespace ICSharpCode.Reporting.DataManager.Listhandling
+{
+	/// <summary>
+	/// Description of DataSource.
+	/// </summary>
+	public class CollectionDataSource:IDataViewHandling
+	{
+		readonly DataCollection<object> baseList;
+		readonly ReportSettings reportSettings;
+		readonly Type elementType;
+		readonly PropertyDescriptorCollection listProperties;
+	
+		public CollectionDataSource(IEnumerable list, Type elementType, ReportSettings reportSettings)
+		{
+			this.elementType = elementType;
+			this.reportSettings = reportSettings;
+			baseList = CreateBaseList(list, elementType);
+			this.listProperties = this.baseList.GetItemProperties(null);
+		}
+		
+		
+		
+		public IndexList IndexList {
+			get {
+				throw new NotImplementedException();
+			}
+		}
+		
+		
+		public System.Collections.ObjectModel.Collection<ICSharpCode.Reporting.BaseClasses.AbstractColumn> AvailableFields {
+			get {
+				var availableFields = new Collection<AbstractColumn>();
+				foreach (PropertyDescriptor p in this.listProperties){
+					availableFields.Add (new AbstractColumn(p.Name,p.PropertyType));
+				}
+				return availableFields;
+			}
+		}
+		
+		
+		public int Count {
+			get {
+				return baseList.Count;
+			}
+		}
+		
+		public int CurrentPosition {
+			get {
+				throw new NotImplementedException();
+			}
+			set {
+				throw new NotImplementedException();
+			}
+		}
+		
+		public object Current {get; private set;}
+			
+
+		
+		public void Sort()
+		{
+			throw new NotImplementedException();
+		}
+		
+		#region Grouping
+		
+		public void Group()
+		{
+			groupedList = GroupInternal();
+			groupEnumerator = groupedList.GetEnumerator();
+			groupEnumerator.MoveNext();
+			listEnumerator = groupEnumerator.Current.GetEnumerator();
+			listEnumerator.MoveNext();
+			Current = listEnumerator.Current;
+		}
+		
+		
+		IEnumerable<IGrouping<object, object>> GroupInternal () {
+			var properties = listProperties.Find(reportSettings.GroupColumnCollection[0].ColumnName,true);
+			var property = listProperties.Find("Randomint",true);
+			var groupedList = baseList.OrderBy(o => o.GetType().GetProperty(property.Name).GetValue(o, null) )
+				.GroupBy(a => a.GetType().GetProperty(properties.Name).GetValue(a, null)).OrderBy(c => c.Key);
+			return groupedList;
+		}
+		
+		#endregion
+		
+		public void Bind()
+		{
+			if (reportSettings.GroupColumnCollection.Any()) {
+				this.Group();
+			} else {
+				this.Sort ();
+			}
+		}
+		
+		#region Fill
+		
+		private IEnumerable<IGrouping<object, object>> groupedList;
+		private IEnumerator<IGrouping<object, object>> groupEnumerator;
+		private IEnumerator<object> listEnumerator;
+		
+		public void Fill(System.Collections.Generic.List<ICSharpCode.Reporting.Interfaces.IPrintableObject> collection)
+		{
+			foreach (IPrintableObject item in collection)
+			{
+				var dbItem = item as IDataItem;
+				if (dbItem != null) {
+					
+					dbItem.DBValue = String.Empty;
+					dbItem.DBValue = ReadValueFromProperty(dbItem.ColumnName);
+					if (String.IsNullOrEmpty(dbItem.DataType)) {
+						dbItem.DataType = SetTypeFromProperty(dbItem.ColumnName).ToString();
+					}
+				}
+			}
+		}
+		
+		
+		string ReadValueFromProperty (string columnName) {
+			var p = listProperties.Find(columnName,true);
+			return p.GetValue(Current).ToString();
+		}
+		
+		
+		Type SetTypeFromProperty (string columnName) {
+			var p = listProperties.Find(columnName,true);
+			return p.PropertyType;
+		}
+		
+		
+		public bool MoveNext()
+		{
+			var canMove = listEnumerator.MoveNext();
+			if (! canMove) { 
+				var groupCanMove = groupEnumerator.MoveNext();
+				if (groupCanMove) {
+					listEnumerator = groupEnumerator.Current.GetEnumerator();
+					canMove = listEnumerator.MoveNext();
+					Current = listEnumerator.Current;
+				} else {
+					Console.WriteLine("end");
+				}
+			} else {
+				Current = listEnumerator.Current;
+			}
+			return canMove;
+			
+		}
+		
+		#endregion
+		
+		public void Reset()
+		{
+			throw new NotImplementedException();
+		}
+		
+		DataCollection<object> CreateBaseList(IEnumerable source, Type elementType)
+		{
+			var list = new DataCollection<object>(elementType);
+			list.AddRange(source);
+			return list;
+		}
+		
+		
+		PropertyDescriptorCollection GetItemProperties(PropertyDescriptor[] listAccessors){
+			if (listAccessors != null && listAccessors.Length > 0){
+				var t = this.elementType;
+
+			    t = listAccessors.Aggregate(t,
+                    (current, pd) => (Type) PropertyTypeHash.Instance[current, pd.Name]);
+
+			    // if t is null an empty list will be generated
+				return ExtendedTypeDescriptor.GetProperties(t);
+			}
+			return ExtendedTypeDescriptor.GetProperties(elementType);
+		}
+	}
+}

src/AddIns/Misc/Reporting/ICSharpCode.Reporting/Test/ICSharpCode.Reporting.Test/ICSharpCode.Reporting.Test.csproj

@@ -66,6 +66,7 @@
   <ItemGroup>
     <Compile Include="src\DataSource\ContributorsList.cs" />
     <Compile Include="src\DataSource\CollectionHandlingFixture.cs" />
+    <Compile Include="src\DataSource\DataSourceGroupingFixture.cs" />
     <Compile Include="src\Expressions\Aggregates\AggregateFuctionHelper.cs" />
     <Compile Include="src\Expressions\Aggregates\SumAggregate.cs" />
     <Compile Include="src\Expressions\IntegrationTests\FieldsFixture.cs" />

src/AddIns/Misc/Reporting/ICSharpCode.Reporting/Test/ICSharpCode.Reporting.Test/src/DataSource/CollectionHandlingFixture.cs

@@ -105,7 +105,7 @@ namespace ICSharpCode.Reporting.Test.DataSource
 		
 		
 		#region Grouping
-		
+		/*
 		[Test]
 		public void GroupbyOneColumn () {
 			var rs = new ReportSettings();
@@ -130,37 +130,33 @@ namespace ICSharpCode.Reporting.Test.DataSource
 				
 				new BaseDataItem(){
 					ColumnName = "GroupItem"
+				},
+				
+				new BaseDataItem(){
+					ColumnName = "RandomInt"
 				}
 			};
 			var rs = new ReportSettings();
 			rs.GroupColumnCollection.Add( new GroupColumn("GroupItem",1,ListSortDirection.Ascending));
+			rs.GroupColumnCollection.Add( new GroupColumn("RandomInt",1,ListSortDirection.Ascending));
+			
 			var collectionSource = new CollectionSource	(list,typeof(Contributor),rs);
+			
 			collectionSource.Bind();
 			int i = 0;
 			do {
-				collectionSource.Fill_Test(ric);
-				Console.WriteLine("first : <{0}> Last <{1}> Group <{2}>",((BaseDataItem)ric[0]).DBValue,
+				collectionSource.Fill(ric);
+				Console.WriteLine("first : <{0}> Last <{1}> Group <{2}> Randomint <{3}>",((BaseDataItem)ric[0]).DBValue,
 				                  ((BaseDataItem)ric[1]).DBValue,
-				                  ((BaseDataItem)ric[2]).DBValue);
+				                  ((BaseDataItem)ric[2]).DBValue,
+				                  ((BaseDataItem)ric[3]).DBValue);
 				i ++;
-			}while (collectionSource.MoveNext_Test_List());
+			}while (collectionSource.MoveNext());
 			
 			Assert.That(i,Is.EqualTo(collectionSource.Count));
 		}
-		
-		/*
-		[Test]
-		public void bla () {
-			var s = list.OrderBy(a => a.Lastname);
-			var x = s.GroupBy(y => y.GroupItem);
-			foreach (var group in x) {
-				Console.WriteLine("{0} - {1}",group.Key,group.GetType().ToString());
-				foreach (var element in group) {
-					Console.WriteLine(element.Firstname);
-				}
-			}
-		}
 		*/
+		
 		#endregion
 		
 		#region Sort

src/AddIns/Misc/Reporting/ICSharpCode.Reporting/Test/ICSharpCode.Reporting.Test/src/DataSource/DataSourceGroupingFixture.cs

@@ -0,0 +1,88 @@
+// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
+// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
+using System;
+using System.ComponentModel;
+using ICSharpCode.Reporting.BaseClasses;
+using ICSharpCode.Reporting.DataManager.Listhandling;
+using ICSharpCode.Reporting.Interfaces;
+using ICSharpCode.Reporting.Items;
+using NUnit.Framework;
+
+namespace ICSharpCode.Reporting.Test.DataSource
+{
+	[TestFixture]
+	public class CollectionDataSourceFixture
+	{
+		 ContributorCollection list;
+		
+		[Test]
+		public void CollectionCountIsEqualToListCount() {
+			var collectionSource = new CollectionSource	(list,typeof(Contributor),new ReportSettings());
+			Assert.That(collectionSource.Count,Is.EqualTo(list.Count));
+		}
+		
+		
+		[Test]
+		public void AvailableFieldsEqualContibutorsPropertyCount() {
+			var collectionSource = new CollectionDataSource	(list,typeof(Contributor),new ReportSettings());
+			Assert.That(collectionSource.AvailableFields.Count,Is.EqualTo(6));
+		}
+		
+		
+		[Test]
+		public void GroupbyOneColumn () {
+			var rs = new ReportSettings();
+			rs.GroupColumnCollection.Add( new GroupColumn("GroupItem",1,ListSortDirection.Ascending));
+			var collectionSource = new CollectionDataSource	(list,typeof(Contributor),rs);
+			collectionSource.Bind();
+			
+		}
+		
+		
+		[Test]
+		public void GroupbyOneColumnAndFill () {
+			
+			var ric = new System.Collections.Generic.List<IPrintableObject>(){
+				new BaseDataItem(){
+					ColumnName = "Lastname"
+						
+				},
+				new BaseDataItem(){
+					ColumnName = "Firstname"
+				},
+				
+				new BaseDataItem(){
+					ColumnName = "GroupItem"
+				},
+				
+				new BaseDataItem(){
+					ColumnName = "RandomInt"
+				}
+			};
+			var rs = new ReportSettings();
+			rs.GroupColumnCollection.Add( new GroupColumn("GroupItem",1,ListSortDirection.Ascending));
+			rs.GroupColumnCollection.Add( new GroupColumn("RandomInt",1,ListSortDirection.Ascending));
+			
+			var collectionSource = new CollectionDataSource (list,typeof(Contributor),rs);
+			collectionSource.Bind();
+			int i = 0;
+			do {
+				collectionSource.Fill(ric);
+				Console.WriteLine("first : <{0}> Last <{1}> Group <{2}> Randomint <{3}>",((BaseDataItem)ric[0]).DBValue,
+				                  ((BaseDataItem)ric[1]).DBValue,
+				                  ((BaseDataItem)ric[2]).DBValue,
+				                  ((BaseDataItem)ric[3]).DBValue);
+				i ++;
+			}while (collectionSource.MoveNext());
+			
+			Assert.That(i,Is.EqualTo(collectionSource.Count));
+		}
+	
+		
+		[SetUp]
+		public void CreateList() {
+			var contributorList = new ContributorsList();
+			list = contributorList.ContributorCollection;
+		}	
+	}
+}