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[Nhibernate-commit] SF.net SVN: nhibernate:[3712] trunk/nhibernate/src/NHibernate.Linq
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From: <te...@us...> - 2008-08-16 23:15:07
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Revision: 3712
http://nhibernate.svn.sourceforge.net/nhibernate/?rev=3712&view=rev
Author: tehlike
Date: 2008-08-16 23:15:16 +0000 (Sat, 16 Aug 2008)
Log Message:
-----------
Initial SqlExpression tree hierarchy.
Modified Paths:
--------------
trunk/nhibernate/src/NHibernate.Linq/NHibernate.Linq.csproj
Added Paths:
-----------
trunk/nhibernate/src/NHibernate.Linq/Expressions/
trunk/nhibernate/src/NHibernate.Linq/Expressions/EntityExpression.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/LimitFragment.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/MemberAccessExpression.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByDirection.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByFragment.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/ProjectionExpression.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/SelectExpression.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/SelectFragment.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/SqlExpression.cs
trunk/nhibernate/src/NHibernate.Linq/Expressions/SqlExpressionType.cs
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/EntityExpression.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/EntityExpression.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/EntityExpression.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using NHibernate.Metadata;
+
+namespace NHibernate.Linq.Expressions
+{
+ /// <summary>
+ /// An entity is where we want to execute our query on, in RDBMS case it is a Table.
+ /// May also be used as from clause of a select expression
+ /// </summary>
+ public class EntityExpression:SqlExpression
+ {
+ public EntityExpression(System.Type type, string alias)
+ : base(SqlExpressionType.Entity, type)
+ {
+ this.Alias = alias;
+ }
+
+ public string Alias { get; protected set; }
+
+ public override string ToString()
+ {
+ return string.Format("(({0}) as {1}", Type.ToString(), this.Alias);
+ }
+ }
+}
Property changes on: trunk/nhibernate/src/NHibernate.Linq/Expressions/EntityExpression.cs
___________________________________________________________________
Added: svn:mergeinfo
+
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/LimitFragment.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/LimitFragment.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/LimitFragment.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NHibernate.Linq.Expressions
+{
+ public class LimitFragment
+ {
+ public int? Skip { get; set; }
+ public int? Take { get; set; }
+ }
+}
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/MemberAccessExpression.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/MemberAccessExpression.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/MemberAccessExpression.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace NHibernate.Linq.Expressions
+{
+ /// <summary>
+ /// A member access expression is produced where a member of an object is accessed(can be field or Property)
+ /// </summary>
+ public class MemberAccessExpression:SqlExpression
+ {
+ public MemberAccessExpression(System.Type type, SqlExpression expression, string name)
+ : base(SqlExpressionType.MemberAccess, type)
+ {
+ this.Name = name;
+ this.Expression = expression;
+ }
+
+ public string Name { get; protected set; }
+ public SqlExpression Expression { get; protected set; }
+ public override string ToString()
+ {
+ return string.Format("({0}.{1})", this.Expression, ".", this.Name);
+ }
+ }
+}
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByDirection.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByDirection.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByDirection.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NHibernate.Linq.Expressions
+{
+ /// <summary>
+ /// The direction of the ordering, default is Ascending.
+ /// </summary>
+ public enum OrderByDirection
+ {
+ Ascending,
+ Descending
+ }
+}
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByFragment.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByFragment.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByFragment.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace NHibernate.Linq.Expressions
+{
+ /// <summary>
+ /// An order by expression is an expression that the result is ordered.
+ /// This class holds reference to the actual expression(can be a projection, property, or an aggregate)
+ /// </summary>
+ public class OrderByFragment
+ {
+ public OrderByFragment(Expression orderBy,OrderByDirection direction)
+ {
+ this.OrderBy = orderBy;
+ this.Direction = direction;
+ }
+
+ public Expression OrderBy { get; protected set; }
+ public OrderByDirection Direction { get;protected set; }
+ }
+}
Property changes on: trunk/nhibernate/src/NHibernate.Linq/Expressions/OrderByFragment.cs
___________________________________________________________________
Added: svn:mergeinfo
+
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/ProjectionExpression.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/ProjectionExpression.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/ProjectionExpression.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace NHibernate.Linq.Expressions
+{
+ /// <summary>
+ /// Projection expression
+ /// </summary>
+ public class ProjectionExpression:SqlExpression
+ {
+ public ProjectionExpression(System.Type type,LambdaExpression lambda):base(SqlExpressionType.Projection,type)
+ {
+ this.Projector = lambda;
+ }
+
+ public LambdaExpression Projector { get; protected set; }
+ public override string ToString()
+ {
+ return string.Format("({0})", this.Projector.ToString());
+ }
+ }
+}
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/SelectExpression.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/SelectExpression.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/SelectExpression.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Linq.Expressions;
+
+namespace NHibernate.Linq.Expressions
+{
+ /// <summary>
+ /// A select expression is executed against the database to retrieve data.
+ /// </summary>
+ public class SelectExpression : SqlExpression
+ {
+ public SelectExpression(System.Type type, SqlExpression from, SqlExpression where, IList<OrderByFragment> orderBys)
+ : base(SqlExpressionType.Select, type)
+ {
+ this.Where = where;
+ this.OrderBys = orderBys;
+ this.From = from;
+ }
+
+ public SqlExpression Where { get; protected set; }
+ public SqlExpression From { get; protected set; }
+ public IList<OrderByFragment> OrderBys { get; protected set; }
+ public LimitFragment Limit { get; set; }
+ }
+}
\ No newline at end of file
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/SelectFragment.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/SelectFragment.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/SelectFragment.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NHibernate.Linq.Expressions
+{
+ public class SelectFragment
+ {
+ public SelectFragment(string alias,SqlExpression expression)
+ {
+ this.Alias = alias;
+ this.Expression = expression;
+ }
+
+ public string Alias { get; protected set; }
+ public SqlExpression Expression { get; protected set; }
+ public override string ToString()
+ {
+ return string.Format("({0} as {1})", Expression.ToString(),Alias);
+ }
+ }
+}
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/SqlExpression.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/SqlExpression.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/SqlExpression.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace NHibernate.Linq.Expressions
+{
+ /// <summary>
+ /// Base expression for transformed nodes.
+ /// </summary>
+ public abstract class SqlExpression:Expression
+ {
+ /// <summary>
+ /// Base class for the modified nodes.
+ /// </summary>
+ /// <param name="nodeType"></param>
+ /// <param name="type"></param>
+ protected SqlExpression(SqlExpressionType nodeType, System.Type type)
+ : base((ExpressionType)nodeType, type)
+ {
+
+ }
+ }
+}
Added: trunk/nhibernate/src/NHibernate.Linq/Expressions/SqlExpressionType.cs
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/Expressions/SqlExpressionType.cs (rev 0)
+++ trunk/nhibernate/src/NHibernate.Linq/Expressions/SqlExpressionType.cs 2008-08-16 23:15:16 UTC (rev 3712)
@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace NHibernate.Linq.Expressions
+{
+ public enum SqlExpressionType
+ {
+ Entity=100,
+ Select,
+ MemberAccess,
+ Projection,
+ }
+}
Modified: trunk/nhibernate/src/NHibernate.Linq/NHibernate.Linq.csproj
===================================================================
--- trunk/nhibernate/src/NHibernate.Linq/NHibernate.Linq.csproj 2008-08-16 19:11:04 UTC (rev 3711)
+++ trunk/nhibernate/src/NHibernate.Linq/NHibernate.Linq.csproj 2008-08-16 23:15:16 UTC (rev 3712)
@@ -46,6 +46,16 @@
</ProjectReference>
</ItemGroup>
<ItemGroup>
+ <Compile Include="Expressions\LimitFragment.cs" />
+ <Compile Include="Expressions\MemberAccessExpression.cs" />
+ <Compile Include="Expressions\OrderByDirection.cs" />
+ <Compile Include="Expressions\OrderByFragment.cs" />
+ <Compile Include="Expressions\ProjectionExpression.cs" />
+ <Compile Include="Expressions\SelectExpression.cs" />
+ <Compile Include="Expressions\SelectFragment.cs" />
+ <Compile Include="Expressions\SqlExpression.cs" />
+ <Compile Include="Expressions\SqlExpressionType.cs" />
+ <Compile Include="Expressions\EntityExpression.cs" />
<Compile Include="Util\Guard.cs" />
<Compile Include="Visitors\LogicalExpressionReducer.cs" />
<Compile Include="ExpressionVisitor.cs" />
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